US20080236143A1 - Waste gas purification apparatus and method therefor - Google Patents

Waste gas purification apparatus and method therefor Download PDF

Info

Publication number
US20080236143A1
US20080236143A1 US11/857,969 US85796907A US2008236143A1 US 20080236143 A1 US20080236143 A1 US 20080236143A1 US 85796907 A US85796907 A US 85796907A US 2008236143 A1 US2008236143 A1 US 2008236143A1
Authority
US
United States
Prior art keywords
waste gas
cooling
absorbing
fluid
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/857,969
Inventor
Koon Kwan Lo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of US20080236143A1 publication Critical patent/US20080236143A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
    • F01N3/043—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids without contact between liquid and exhaust gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
    • B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/62—Carbon oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/005—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for draining or otherwise eliminating condensates or moisture accumulating in the apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/40—Alkaline earth metal or magnesium compounds
    • B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/60—Inorganic bases or salts
    • B01D2251/604—Hydroxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/30—Sulfur compounds
    • B01D2257/304—Hydrogen sulfide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/50—Carbon oxides
    • B01D2257/504—Carbon dioxide
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/40—Capture or disposal of greenhouse gases of CO2
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/32—Direct CO2 mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to an apparatus and method for purifying waste gas, in particular to an apparatus and method for purifying waste gas, which could purify the waste gas by eliminating dust, carbon dioxide, sulfide and other harmful substances contained in the waste gas.
  • the present invention provides a waste gas purification apparatus, which comprises a cooling unit including a cooling chamber containing a cooling fluid and a waste gas transmission pipe passing through the cooling chamber and immersing in the cooling fluid, which is used to cool the waste gas input into the waste gas transmission pipe; a dust eliminating unit provided at the downstream side of the cooling unit and used to eliminate harmful substances and dust contained in the waste gas; an absorbing unit provided at the downstream side of the dust eliminating unit and containing an absorbing fluid, which is used to eliminate carbon dioxide and sulfide contained in the waste gas by mean of the reaction between the absorbing fluid and the carbon dioxide and sulfide, in which the carbon dioxide and sulfide react with the absorbing fluid to generate precipitates; and a cleaning unit provided at the downstream side of the absorbing unit and containing a cleaning fluid, which is used to eliminate harmful substances and dust remained in the waste gas.
  • a cooling unit including a cooling chamber containing a cooling fluid and a waste gas transmission pipe passing through the cooling chamber and immersing in the cooling fluid,
  • the cooling chamber may be provided with a cooling fluid level adjustment device for adjusting the level of the cooling fluid contained in the cooling chamber, to immerse the waste gas transmission pipe in the cooling fluid all the time.
  • the cooling chamber may be a hermetic container and provided with a steam recycling device for recycling the steam generated by the cooling fluid during the course of cooling the waste gas.
  • a pumping device may be provided between the dust eliminating unit and the absorbing unit, which is used to pump the waste gas output from the dust eliminating unit to the inside bottom part of the absorbing unit to enable the waste gas to be released under the level of the absorbing fluid.
  • the apparatus of the present invention further comprises a waste gas tank provided at the upstream side of the waste gas cooling unit, which is used to let the waste gas rest therein to remove large dust particles contained in the waste gas before the waste gas is supplied to the waste gas transmission pipe.
  • a waste gas tank provided at the upstream side of the waste gas cooling unit, which is used to let the waste gas rest therein to remove large dust particles contained in the waste gas before the waste gas is supplied to the waste gas transmission pipe.
  • the present invention provides a waste gas purification method, which comprises: a cooling step for cooling the waste gas; a dust eliminating step for eliminating harmful substances and dust contained in the waste gas after the waste gas is processed in the cooling step; an absorbing step for eliminating carbon dioxide and sulfide contained in the waste gas after the waste gas is processed in the dust eliminating step; and a purifying step for eliminating harmful substances and dust remained in the waste gas after the waste gas is processed in the absorbing step.
  • the cooling step may further comprise a steam recycling step for recycling the steam generated in the cooling step.
  • the absorbing step may further comprise an absorbing fluid purifying step for removing precipitates generated in the absorbing step and for recharging absorbing fluid.
  • the method of the present invention may further comprises a resting step for letting the waste gas rest to remove large dust particles contained in the waste gas before the waste gas is processed in the cooling step.
  • FIG. 1 is a front cross-sectional view of an embodiment of the waste gas purification apparatus according to the present invention.
  • FIG. 2 is a top cross-sectional view of the embodiment shown in FIG. 1 .
  • the waste gas purification apparatus of the present invention comprises a cooling unit 2 , a dust eliminating unit 5 and an absorbing unit 15 .
  • the cooling unit 2 includes a cooling chamber 12 containing cooling fluid 3 such as cooling water, and a waste gas transmission pipe 21 passing through the cooling chamber 12 , through which the high temperature waste gas is transmitted.
  • the waste gas transmission pipe 21 is immersed in the cooling fluid 3 , to enable heat exchanging between the high temperature waste gas transmitted within the transmission pipe and the cooling fluid outside the transmission pipe, to cool the high temperature waste gas.
  • a plurality of waste gas transmission pipes 21 may be provided in the cooling chamber 12 . As shown in FIG.
  • the cooling chamber 12 may also be provided with a cooling fluid level adjustment device 4 , which is used to adjust the level of the cooling fluid contained in the cooling chamber to enable immersing the waste gas transmission pipes 21 in the cooling fluid all the time.
  • the cooling fluid level adjustment device 4 is connected to a cooling fluid supply. When part of the cooling fluid is consumed, which may cause the waste gas transmission pipe to be exposed out of the level of the cooling fluid, the level adjustment device 4 is turned on to supply cooling fluid into the cooling chamber. Thus, the waste gas transmission pipe could be submerged in the cooling fluid.
  • the cooling chamber 12 may be a hermetic container and be provided with a steam recycling device 14 , to recycle the steam generated by the cooling fluid during the course of cooling the high temperature waste gas.
  • the recycled steam may be used to generate power.
  • the cooling chamber may be separated into a plurality of compartments by a plurality of spacers, and a steam communication port 13 may be provided at the upper part of each spacer, to enable the steam to communicate between adjacent compartments.
  • a cooling fluid communication port 41 may be provided at the lower part of each spacer, to enable the cooling fluid to communicate between adjacent compartments.
  • each of the compartments may be separated from each other at their lower parts and be provided with their respective cooling fluid level adjustment device.
  • the compartments may contain different kinds of cooling fluids and/or cooling fluids with different temperatures, to enable subsection cooling of the high temperature waste gas.
  • the harmful substances contained in the waste gas such as dioxin (PCDD), TCDD have a melting point of about 88° C. to 330° C., and are solid under normal temperature.
  • the cooled waste gas is supplied into the dust eliminating unit 5 provided at the downstream side of the cooling unit 2 .
  • the dust eliminating unit 5 may be any kind of dust eliminating unit known in the prior art.
  • the dust eliminating unit 5 further cools the waste gas to normal temperature or any other temperature suitable for eliminating PCDD and TCDD, to make PCDD and TCDD contained in the waste gas to transform to solid particles.
  • PCDD and TCDD could be eliminated from the waste gas together with dusts suspending in the waste gas.
  • the waste gas After being processed in the dust eliminating unit, the waste gas is supplied to the absorbing unit 15 provided at the downstream side of the dust eliminating unit 5 , to eliminate carbon dioxide and sulfide contained in the waste gas.
  • the absorbing unit 15 is a hermetic container, which contains absorbing fluid 7 , such as alkaline solution.
  • absorbing fluid 7 such as alkaline solution.
  • calcium hydroxide solution could be used as absorbing fluid for absorbing carbon dioxide and sulfide.
  • a pumping device 6 may be provided between the dust eliminating unit 5 and the absorbing unit 15 and be used to pump the waste gas output from the dust eliminating unit 5 to the inside bottom part of the absorbing unit 15 , which could make the waste gas to be released under the level of the absorbing fluid to improve the efficiency of eliminating carbon dioxide and sulfide.
  • the purification apparatus of the present invention may comprise a plurality of absorbing units provided in series.
  • two absorbing unit are provided in the embodiment shown in FIG. 1 .
  • the waste gas output from the former absorbing unit is supplied to the latter absorbing unit, to further eliminate the carbon dioxide and sulfide contained in the waste gas.
  • a pumping device may be provided between adjacent absorbing units, to improve the efficiency of eliminating carbon dioxide and sulfide.
  • the absorbing unit 15 may be provided with an absorbing fluid refreshing device 17 .
  • the absorbing fluid refreshing device 17 could be used to remove the precipitates in the absorbing unit 15 and recharge absorbing fluid into the absorbing unit 15 , to maintain the absorbing capacity of the absorbing unit 15 .
  • a cleaning unit 16 may be provided at the downstream side of the absorbing unit 15 .
  • the cleaning unit 16 contains cleaning fluid 8 , such as clean water.
  • the waste gas is supplied to the cleaning unit 16 after being processed by the absorbing unit 15 , to further eliminate the dust and harmful substances remained in the waste gas.
  • a detection unit 10 may be provided at the downstream side of the cleaning unit 16 to detect whether or not the waste gas is purified.
  • the waste gas is supplied to the detection unit 10 through an output port 9 after being cleaned by the cleaning unit 16 .
  • the waste gas is discharged to the air after being detected to be qualified.
  • the purification apparatus of the present invention may also be provided with a waste gas tank 1 .
  • the waste gas tank 1 is a hermetic container, which is provided at the upstream side of the waste gas cooling unit 2 and between the waste gas transmission pipe 21 and waste gas source (not shown in the figures). Before the waste gas is supplied to the waste gas transmission pipe 21 , it could rest in the waste gas tank 1 , to remove large dust particles, therefore, the purification load of the other units of the purification apparatus could be alleviated.
  • the purification method of the present invention mainly comprises a cooling step, in which the high temperature waste gas is cooled in the cooling unit 2 ; a dust eliminating step, in which the cooled waste gas is input to the dust eliminating unit 5 so as to transform the harmful substances contained in the waste gas to solid particles and to remove the solid particles of the harmful substances and dust suspending in the waste gas; an absorbing step, in which the waste gas is input into the absorbing fluid contained in the absorbing unit 15 , to absorb the carbon dioxide and sulfide contained in the waste gas; and a cleaning step, in which the waste gas is input to the cleaning unit 16 to finally clean the waste gas by the cleaning fluid 8 .
  • the purification method may also comprising a resting step, in which the high temperature waste gas rests in the waste gas tank 1 before proceeding to the cooling step, to remove large dust particles from the waste gas.
  • the dust, carbon dioxide, sulfide and harmful substances such as dioxin (PCDD), TCDD and etc. contained in the waste gas exhausted from a burning furnace could be effectively eliminated, therefore, the environmental pollution of the waste gas exhausted from a power plant, garbage incinerator or metallurgical plant could be reduced effectively.

Abstract

A waste gas purification apparatus comprises a cooling unit including a cooling chamber containing a cooling fluid and a waste gas transmission pipe passing through the cooling chamber and immersing in the cooling fluid, which is used to cool the waste gas input into the waste gas transmission pipe; a dust eliminating unit provided at the downstream side of the cooling unit and used to eliminate harmful substances and dust contained in the waste gas; an absorbing unit provided at the downstream side of the dust eliminating unit and containing an absorbing fluid, which is used to eliminate carbon dioxide and sulfide contained in the waste gas by mean of the reaction between the absorbing fluid and the carbon dioxide and sulfide, in which the carbon dioxide and sulfide react with the absorbing fluid to generate precipitates; and a cleaning unit provided at the downstream side of the absorbing unit and containing a cleaning fluid, which is used to eliminate harmful substances and dust remained in the waste gas. A waste gas purification method is also provided.

Description

    CROSS-REFERENCE TO RELATED APPLICATION
  • This application claims priority benefit of Chinese patent application No. CN200710092120.9 filed on Apr. 20, 2007, the content of which is hereby incorporated by reference in its entirety.
    • FIELD OF THE INVENTION
  • The present invention relates to an apparatus and method for purifying waste gas, in particular to an apparatus and method for purifying waste gas, which could purify the waste gas by eliminating dust, carbon dioxide, sulfide and other harmful substances contained in the waste gas.
    • BACKGROUND OF THE INVENTION
  • With the development of the society, the environmental protection sense of human being is increasingly improved. However, to obtain more energy, people have to burn more and more mineral fuel, petroleum products and organic substances, which continuously generate waste gas containing a large amount of dust, carbon dioxide, sulfide and other harmful substances, such as dioxin (PCDD), TCDD and etc. The dust in the waste gas would deteriorate air quality. The carbon dioxide would incur greenhouse effect resulting in global climate warming. The sulfide would generate acid rain resulting in soil acidification and soil erosion, which will affect the growth of plants. The harmful substances such as PCDD and TCDD are in form of particle under normal temperature, which are very easy to accumulate in the organism, thus it is very difficult to eliminate PCDD and TCDD from the natural environment by mean of natural degradation. All of the above-mentioned substances are criminals of climate warming and environment deterioration. However, till now, there is not a single waste gas purification apparatus with simple structure, which is capable of efficiently purifying waste gas exhausted from a burning furnace.
    • SUMMARY OF THE INVENTION
  • To overcome the above-mentioned questions, the present invention provides a waste gas purification apparatus, which comprises a cooling unit including a cooling chamber containing a cooling fluid and a waste gas transmission pipe passing through the cooling chamber and immersing in the cooling fluid, which is used to cool the waste gas input into the waste gas transmission pipe; a dust eliminating unit provided at the downstream side of the cooling unit and used to eliminate harmful substances and dust contained in the waste gas; an absorbing unit provided at the downstream side of the dust eliminating unit and containing an absorbing fluid, which is used to eliminate carbon dioxide and sulfide contained in the waste gas by mean of the reaction between the absorbing fluid and the carbon dioxide and sulfide, in which the carbon dioxide and sulfide react with the absorbing fluid to generate precipitates; and a cleaning unit provided at the downstream side of the absorbing unit and containing a cleaning fluid, which is used to eliminate harmful substances and dust remained in the waste gas.
  • The cooling chamber may be provided with a cooling fluid level adjustment device for adjusting the level of the cooling fluid contained in the cooling chamber, to immerse the waste gas transmission pipe in the cooling fluid all the time. In addition, the cooling chamber may be a hermetic container and provided with a steam recycling device for recycling the steam generated by the cooling fluid during the course of cooling the waste gas.
  • Preferably, a pumping device may be provided between the dust eliminating unit and the absorbing unit, which is used to pump the waste gas output from the dust eliminating unit to the inside bottom part of the absorbing unit to enable the waste gas to be released under the level of the absorbing fluid.
  • Preferably, the apparatus of the present invention further comprises a waste gas tank provided at the upstream side of the waste gas cooling unit, which is used to let the waste gas rest therein to remove large dust particles contained in the waste gas before the waste gas is supplied to the waste gas transmission pipe.
  • In another aspect, the present invention provides a waste gas purification method, which comprises: a cooling step for cooling the waste gas; a dust eliminating step for eliminating harmful substances and dust contained in the waste gas after the waste gas is processed in the cooling step; an absorbing step for eliminating carbon dioxide and sulfide contained in the waste gas after the waste gas is processed in the dust eliminating step; and a purifying step for eliminating harmful substances and dust remained in the waste gas after the waste gas is processed in the absorbing step.
  • The cooling step may further comprise a steam recycling step for recycling the steam generated in the cooling step. The absorbing step may further comprise an absorbing fluid purifying step for removing precipitates generated in the absorbing step and for recharging absorbing fluid.
  • Preferably, the method of the present invention may further comprises a resting step for letting the waste gas rest to remove large dust particles contained in the waste gas before the waste gas is processed in the cooling step.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The present invention will be described by way of example with reference to the accompanying drawings, in which:
  • FIG. 1 is a front cross-sectional view of an embodiment of the waste gas purification apparatus according to the present invention; and
  • FIG. 2 is a top cross-sectional view of the embodiment shown in FIG. 1.
    •  DETAILED DESCRIPTION OF THE INVENTION
  • As shown in FIG. 1, the waste gas purification apparatus of the present invention comprises a cooling unit 2, a dust eliminating unit 5 and an absorbing unit 15. The cooling unit 2 includes a cooling chamber 12 containing cooling fluid 3 such as cooling water, and a waste gas transmission pipe 21 passing through the cooling chamber 12, through which the high temperature waste gas is transmitted. The waste gas transmission pipe 21 is immersed in the cooling fluid 3, to enable heat exchanging between the high temperature waste gas transmitted within the transmission pipe and the cooling fluid outside the transmission pipe, to cool the high temperature waste gas. Alternatively, a plurality of waste gas transmission pipes 21 may be provided in the cooling chamber 12. As shown in FIG. 2, there are three waste gas transmission pipes 21 provided in the cooling chamber 12, and each of them is immersed in the cooling fluid. The cooling chamber 12 may also be provided with a cooling fluid level adjustment device 4, which is used to adjust the level of the cooling fluid contained in the cooling chamber to enable immersing the waste gas transmission pipes 21 in the cooling fluid all the time. The cooling fluid level adjustment device 4 is connected to a cooling fluid supply. When part of the cooling fluid is consumed, which may cause the waste gas transmission pipe to be exposed out of the level of the cooling fluid, the level adjustment device 4 is turned on to supply cooling fluid into the cooling chamber. Thus, the waste gas transmission pipe could be submerged in the cooling fluid.
  • In addition, the cooling chamber 12 may be a hermetic container and be provided with a steam recycling device 14, to recycle the steam generated by the cooling fluid during the course of cooling the high temperature waste gas. For example, the recycled steam may be used to generate power. The cooling chamber may be separated into a plurality of compartments by a plurality of spacers, and a steam communication port 13 may be provided at the upper part of each spacer, to enable the steam to communicate between adjacent compartments. A cooling fluid communication port 41 may be provided at the lower part of each spacer, to enable the cooling fluid to communicate between adjacent compartments. However, each of the compartments may be separated from each other at their lower parts and be provided with their respective cooling fluid level adjustment device. Thus, the compartments may contain different kinds of cooling fluids and/or cooling fluids with different temperatures, to enable subsection cooling of the high temperature waste gas.
  • The harmful substances contained in the waste gas, such as dioxin (PCDD), TCDD have a melting point of about 88° C. to 330° C., and are solid under normal temperature. To eliminate those harmful substances, the cooled waste gas is supplied into the dust eliminating unit 5 provided at the downstream side of the cooling unit 2. The dust eliminating unit 5 may be any kind of dust eliminating unit known in the prior art. The dust eliminating unit 5 further cools the waste gas to normal temperature or any other temperature suitable for eliminating PCDD and TCDD, to make PCDD and TCDD contained in the waste gas to transform to solid particles. Thus, PCDD and TCDD could be eliminated from the waste gas together with dusts suspending in the waste gas.
  • After being processed in the dust eliminating unit, the waste gas is supplied to the absorbing unit 15 provided at the downstream side of the dust eliminating unit 5, to eliminate carbon dioxide and sulfide contained in the waste gas. The absorbing unit 15 is a hermetic container, which contains absorbing fluid 7, such as alkaline solution. For example, calcium hydroxide solution could be used as absorbing fluid for absorbing carbon dioxide and sulfide. When the waste gas is supplied to the calcium hydroxide solution, the carbon dioxide and sulfide contained in the waste gas will react with calcium hydroxide to generate precipitates, thus, the carbon dioxide and sulfide would be eliminated from the waste gas. A pumping device 6 may be provided between the dust eliminating unit 5 and the absorbing unit 15 and be used to pump the waste gas output from the dust eliminating unit 5 to the inside bottom part of the absorbing unit 15, which could make the waste gas to be released under the level of the absorbing fluid to improve the efficiency of eliminating carbon dioxide and sulfide.
  • In addition, to further improve the efficiency of eliminating carbon dioxide and sulfide, the purification apparatus of the present invention may comprise a plurality of absorbing units provided in series. For example, two absorbing unit are provided in the embodiment shown in FIG. 1. The waste gas output from the former absorbing unit is supplied to the latter absorbing unit, to further eliminate the carbon dioxide and sulfide contained in the waste gas. Similarly, a pumping device may be provided between adjacent absorbing units, to improve the efficiency of eliminating carbon dioxide and sulfide.
  • As shown in FIG. 2, the absorbing unit 15 may be provided with an absorbing fluid refreshing device 17. The absorbing fluid refreshing device 17 could be used to remove the precipitates in the absorbing unit 15 and recharge absorbing fluid into the absorbing unit 15, to maintain the absorbing capacity of the absorbing unit 15.
  • A cleaning unit 16 may be provided at the downstream side of the absorbing unit 15. The cleaning unit 16 contains cleaning fluid 8, such as clean water. The waste gas is supplied to the cleaning unit 16 after being processed by the absorbing unit 15, to further eliminate the dust and harmful substances remained in the waste gas.
  • A detection unit 10 may be provided at the downstream side of the cleaning unit 16 to detect whether or not the waste gas is purified. The waste gas is supplied to the detection unit 10 through an output port 9 after being cleaned by the cleaning unit 16. The waste gas is discharged to the air after being detected to be qualified.
  • The purification apparatus of the present invention may also be provided with a waste gas tank 1. The waste gas tank 1 is a hermetic container, which is provided at the upstream side of the waste gas cooling unit 2 and between the waste gas transmission pipe 21 and waste gas source (not shown in the figures). Before the waste gas is supplied to the waste gas transmission pipe 21, it could rest in the waste gas tank 1, to remove large dust particles, therefore, the purification load of the other units of the purification apparatus could be alleviated.
  • According to the above description and referring to FIGS. 1 and 2, the purification method of the present invention will be described, which mainly comprises a cooling step, in which the high temperature waste gas is cooled in the cooling unit 2; a dust eliminating step, in which the cooled waste gas is input to the dust eliminating unit 5 so as to transform the harmful substances contained in the waste gas to solid particles and to remove the solid particles of the harmful substances and dust suspending in the waste gas; an absorbing step, in which the waste gas is input into the absorbing fluid contained in the absorbing unit 15, to absorb the carbon dioxide and sulfide contained in the waste gas; and a cleaning step, in which the waste gas is input to the cleaning unit 16 to finally clean the waste gas by the cleaning fluid 8.
  • The purification method may also comprising a resting step, in which the high temperature waste gas rests in the waste gas tank 1 before proceeding to the cooling step, to remove large dust particles from the waste gas.
  • Through the waste gas purification apparatus and purification method of the present invention, the dust, carbon dioxide, sulfide and harmful substances such as dioxin (PCDD), TCDD and etc. contained in the waste gas exhausted from a burning furnace could be effectively eliminated, therefore, the environmental pollution of the waste gas exhausted from a power plant, garbage incinerator or metallurgical plant could be reduced effectively.

Claims (20)

1. A waste gas purification apparatus comprising:
a cooling unit including a cooling chamber containing a cooling fluid and a waste gas transmission pipe passing through the cooling chamber and immersing in the cooling fluid, which is used to cool the waste gas input into the waste gas transmission pipe;
a dust eliminating unit provided at the downstream side of the cooling unit and used to eliminate harmful substances and dust contained in the waste gas;
an absorbing unit provided at the downstream side of the dust eliminating unit and containing an absorbing fluid, which is used to eliminate carbon dioxide and sulfide contained in the waste gas by mean of the reaction between the absorbing fluid and the carbon dioxide and sulfide, in which the carbon dioxide and sulfide react with the absorbing fluid to generate precipitates; and
a cleaning unit provided at the downstream side of the absorbing unit and containing a cleaning fluid, which is used to eliminate harmful substances and dust remained in the waste gas.
2. The waste gas purification apparatus according to claim 1, wherein the cooling chamber is provided with a cooling fluid level adjustment device for adjusting the level of the cooling fluid contained in the cooling chamber, to immerse the waste gas transmission pipe in the cooling fluid all the time.
3. The waste gas purification apparatus according to claim 1, wherein the cooling chamber is a hermetic container and provided with a steam recycling device for recycling the steam generated by the cooling fluid during the course of cooling the waste gas.
4. The waste gas purification apparatus according to claim 2, wherein the cooling chamber is a hermetic container and provided with a steam recycling device for recycling the steam generated by the cooling fluid during the course of cooling the waste gas.
5. The waste gas purification apparatus according to claim 3, wherein the cooling chamber is separated into a plurality of compartments by a plurality of spacers, and a steam communication port is provided at the upper part of each spacer to enable the steam to communicate between adjacent compartments, and a cooling fluid communication port is provided at the lower part of each spacer, to enable the cooling fluid to communicate between adjacent compartments.
6. The waste gas purification apparatus according to claim 4, wherein the cooling chamber is separated into a plurality of compartments by a plurality of spacers, and a steam communication port is provided at the upper part of each spacer to enable the steam to communicate between adjacent compartments, and a cooling fluid communication port is provided at the lower part of each spacer, to enable the cooling fluid to communicate between adjacent compartments.
7. The waste gas purification apparatus according to claim 3, wherein the cooling chamber is separated into a plurality of compartments by a plurality of spacers, and a steam communication port is provided at the upper of each spacer to enable the steam to communicate between adjacent compartments, and lower parts of the compartments are separated from each other to enable the compartments contain different kinds of cooling fluids and/or cooling fluids with different temperatures for subsection cooling of the waste gas.
8. The waste gas purification apparatus according to claim 4, wherein the cooling chamber is separated into a plurality of compartments by a plurality of spacers, and a steam communication port is provided at the upper of each spacer to enable the steam to communicate between adjacent compartments, and lower parts of the compartments are separated from each other to enable the compartments contain different kinds of cooling fluids and/or cooling fluids with different temperatures for subsection cooling of the waste gas.
9. The waste gas purification apparatus according to claim 1, wherein a pumping device is provided between the dust eliminating unit and the absorbing unit, which is used to pump the waste gas output from the dust eliminating unit to the inside bottom part of the absorbing unit to enable the waste gas to be released under the level of the absorbing fluid.
10. The waste gas purification apparatus according to claim 1, wherein the apparatus comprises a plurality of said absorbing units provided in series.
11. The waste gas purification apparatus according to claim 10, wherein a pumping device is provided between adjacent absorbing units, which is used to pump the waste gas output from a former absorbing unit to the inside bottom part of a latter absorbing unit to enable the waste gas to be released under the level of the absorbing fluid contained in the latter absorbing unit.
12. The waste gas purification apparatus according to claim 1, wherein the absorbing unit is provided with an absorbing fluid refreshing device for removing the precipitates in the absorbing unit and for recharging absorbing fluid into the absorbing unit.
13. The waste gas purification apparatus according to claim 1, wherein the absorbing fluid is alkaline solution.
14. The waste gas purification apparatus according to claim 1, wherein the apparatus further comprises a waste gas tank provided at the upstream side of the waste gas cooling unit, which is used to let the waste gas rest therein to remove large dust particles contained in the waste gas before the waste gas is supplied to the waste gas transmission pipe.
15. A waste gas purification method comprising:
a cooling step for cooling the waste gas;
a dust eliminating step for eliminating harmful substances and dust contained in the waste gas after the waste gas is processed in the cooling step;
an absorbing step for eliminating carbon dioxide and sulfide contained in the waste gas after the waste gas is processed in the dust eliminating step; and
a purifying step for eliminating harmful substances and dust remained in the waste gas after the waste gas is processed in the absorbing step.
16. The waste gas purification method according to claim 15, wherein the cooling step further comprises a steam recycling step for recycling the steam generated in the cooling step.
17. The waste gas purification method according to claim 16, wherein the absorbing step further comprises an absorbing fluid purifying step for removing precipitates generated in the absorbing step and for recharging absorbing fluid.
18. The waste gas purification method according to claim 15, wherein the method further comprises a resting step for letting the waste gas rest to remove large dust particles contained in the waste gas before the waste gas is processed in the cooling step.
19. The waste gas purification method according to claim 16, wherein the method further comprises a resting step for letting the waste gas rest to remove large dust particles contained in the waste gas before the waste gas is processed in the cooling step.
20. The waste gas purification method according to claim 17, wherein the method further comprises a resting step for letting the waste gas rest to remove large dust particles contained in the waste gas before the waste gas is processed in the cooling step.
US11/857,969 2007-04-02 2007-09-19 Waste gas purification apparatus and method therefor Abandoned US20080236143A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNA2007100921209A CN101280926A (en) 2007-04-02 2007-04-02 Exhaust gas purifying device and purification method thereof
CN200710092120.9 2007-04-02

Publications (1)

Publication Number Publication Date
US20080236143A1 true US20080236143A1 (en) 2008-10-02

Family

ID=39791974

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/857,969 Abandoned US20080236143A1 (en) 2007-04-02 2007-09-19 Waste gas purification apparatus and method therefor

Country Status (2)

Country Link
US (1) US20080236143A1 (en)
CN (1) CN101280926A (en)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090020044A1 (en) * 2007-05-24 2009-01-22 Constantz Brent R Hydraulic cements comprising carbonate compound compositions
US20090169452A1 (en) * 2007-12-28 2009-07-02 Constantz Brent R Methods of sequestering co2
US20100155258A1 (en) * 2008-12-23 2010-06-24 Kirk Donald W Low Energy Electrochemical Hydroxide System and Method
US7744761B2 (en) 2007-06-28 2010-06-29 Calera Corporation Desalination methods and systems that include carbonate compound precipitation
US7749476B2 (en) 2007-12-28 2010-07-06 Calera Corporation Production of carbonate-containing compositions from material comprising metal silicates
US7753618B2 (en) 2007-06-28 2010-07-13 Calera Corporation Rocks and aggregate, and methods of making and using the same
US7754169B2 (en) 2007-12-28 2010-07-13 Calera Corporation Methods and systems for utilizing waste sources of metal oxides
US7771684B2 (en) 2008-09-30 2010-08-10 Calera Corporation CO2-sequestering formed building materials
US7815880B2 (en) 2008-09-30 2010-10-19 Calera Corporation Reduced-carbon footprint concrete compositions
US7829053B2 (en) 2008-10-31 2010-11-09 Calera Corporation Non-cementitious compositions comprising CO2 sequestering additives
US7875163B2 (en) 2008-07-16 2011-01-25 Calera Corporation Low energy 4-cell electrochemical system with carbon dioxide gas
US7939336B2 (en) 2008-09-30 2011-05-10 Calera Corporation Compositions and methods using substances containing carbon
US7966250B2 (en) 2008-09-11 2011-06-21 Calera Corporation CO2 commodity trading system and method
US7993511B2 (en) 2009-07-15 2011-08-09 Calera Corporation Electrochemical production of an alkaline solution using CO2
US7993500B2 (en) 2008-07-16 2011-08-09 Calera Corporation Gas diffusion anode and CO2 cathode electrolyte system
US8137444B2 (en) 2009-03-10 2012-03-20 Calera Corporation Systems and methods for processing CO2
US8357270B2 (en) 2008-07-16 2013-01-22 Calera Corporation CO2 utilization in electrochemical systems
US8491858B2 (en) 2009-03-02 2013-07-23 Calera Corporation Gas stream multi-pollutants control systems and methods
CN103726908A (en) * 2014-01-20 2014-04-16 王晶 Automobile tail gas purification system and purification method thereof
US8834688B2 (en) 2009-02-10 2014-09-16 Calera Corporation Low-voltage alkaline production using hydrogen and electrocatalytic electrodes
US8869477B2 (en) 2008-09-30 2014-10-28 Calera Corporation Formed building materials
US9133581B2 (en) 2008-10-31 2015-09-15 Calera Corporation Non-cementitious compositions comprising vaterite and methods thereof
US9260314B2 (en) 2007-12-28 2016-02-16 Calera Corporation Methods and systems for utilizing waste sources of metal oxides
CN106050365A (en) * 2016-06-28 2016-10-26 芜湖澳奔玛汽车部件有限公司 Automobile engine with oil and gas treating mechanism

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103969242A (en) * 2014-05-22 2014-08-06 江苏鑫知源仪器有限公司 Waste gas filter of photoelectric direct reading spectrometer
CN104297170A (en) * 2014-10-22 2015-01-21 合肥卓越分析仪器有限责任公司 Waste gas treatment device of photoelectric direct-reading spectrometer
CN104948268A (en) * 2015-05-06 2015-09-30 安徽舒凯矿山机械有限公司 Underground mine operation vehicle with tail gas emission reduction function
CN110594768B (en) * 2019-09-12 2020-12-08 任才银 Cold and hot balanced heat exchange device of environment-friendly
CN111102847B (en) * 2019-11-26 2021-12-17 众德环保科技有限公司 Oxygen-enriched side-blown smelting furnace with low emission
CN111794833A (en) * 2020-08-06 2020-10-20 福州隆鹃电子科技有限公司 Automobile exhaust purifying equipment capable of being recycled

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3504481A (en) * 1967-12-11 1970-04-07 Agop G Zakarian Air filtering system
US5004486A (en) * 1990-07-02 1991-04-02 Chen Chun Teh Submerged-type gas cleaning system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3504481A (en) * 1967-12-11 1970-04-07 Agop G Zakarian Air filtering system
US5004486A (en) * 1990-07-02 1991-04-02 Chen Chun Teh Submerged-type gas cleaning system

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090020044A1 (en) * 2007-05-24 2009-01-22 Constantz Brent R Hydraulic cements comprising carbonate compound compositions
US7906028B2 (en) 2007-05-24 2011-03-15 Calera Corporation Hydraulic cements comprising carbonate compound compositions
US20100132591A1 (en) * 2007-05-24 2010-06-03 Constantz Brent R Hydraulic Cements Comprising Carbonate Compound Compositions
US7735274B2 (en) 2007-05-24 2010-06-15 Calera Corporation Hydraulic cements comprising carbonate compound compositions
US8857118B2 (en) 2007-05-24 2014-10-14 Calera Corporation Hydraulic cements comprising carbonate compound compositions
US7744761B2 (en) 2007-06-28 2010-06-29 Calera Corporation Desalination methods and systems that include carbonate compound precipitation
US7914685B2 (en) 2007-06-28 2011-03-29 Calera Corporation Rocks and aggregate, and methods of making and using the same
US7931809B2 (en) 2007-06-28 2011-04-26 Calera Corporation Desalination methods and systems that include carbonate compound precipitation
US7753618B2 (en) 2007-06-28 2010-07-13 Calera Corporation Rocks and aggregate, and methods of making and using the same
US20090169452A1 (en) * 2007-12-28 2009-07-02 Constantz Brent R Methods of sequestering co2
US7887694B2 (en) 2007-12-28 2011-02-15 Calera Corporation Methods of sequestering CO2
US7749476B2 (en) 2007-12-28 2010-07-06 Calera Corporation Production of carbonate-containing compositions from material comprising metal silicates
US9260314B2 (en) 2007-12-28 2016-02-16 Calera Corporation Methods and systems for utilizing waste sources of metal oxides
US7754169B2 (en) 2007-12-28 2010-07-13 Calera Corporation Methods and systems for utilizing waste sources of metal oxides
US8333944B2 (en) 2007-12-28 2012-12-18 Calera Corporation Methods of sequestering CO2
US8357270B2 (en) 2008-07-16 2013-01-22 Calera Corporation CO2 utilization in electrochemical systems
US7993500B2 (en) 2008-07-16 2011-08-09 Calera Corporation Gas diffusion anode and CO2 cathode electrolyte system
US7875163B2 (en) 2008-07-16 2011-01-25 Calera Corporation Low energy 4-cell electrochemical system with carbon dioxide gas
US8894830B2 (en) 2008-07-16 2014-11-25 Celera Corporation CO2 utilization in electrochemical systems
US7966250B2 (en) 2008-09-11 2011-06-21 Calera Corporation CO2 commodity trading system and method
US7771684B2 (en) 2008-09-30 2010-08-10 Calera Corporation CO2-sequestering formed building materials
US8869477B2 (en) 2008-09-30 2014-10-28 Calera Corporation Formed building materials
US8006446B2 (en) 2008-09-30 2011-08-30 Calera Corporation CO2-sequestering formed building materials
US7939336B2 (en) 2008-09-30 2011-05-10 Calera Corporation Compositions and methods using substances containing carbon
US7815880B2 (en) 2008-09-30 2010-10-19 Calera Corporation Reduced-carbon footprint concrete compositions
US8603424B2 (en) 2008-09-30 2013-12-10 Calera Corporation CO2-sequestering formed building materials
US8431100B2 (en) 2008-09-30 2013-04-30 Calera Corporation CO2-sequestering formed building materials
US8470275B2 (en) 2008-09-30 2013-06-25 Calera Corporation Reduced-carbon footprint concrete compositions
US7829053B2 (en) 2008-10-31 2010-11-09 Calera Corporation Non-cementitious compositions comprising CO2 sequestering additives
US9133581B2 (en) 2008-10-31 2015-09-15 Calera Corporation Non-cementitious compositions comprising vaterite and methods thereof
US7790012B2 (en) 2008-12-23 2010-09-07 Calera Corporation Low energy electrochemical hydroxide system and method
US20100155258A1 (en) * 2008-12-23 2010-06-24 Kirk Donald W Low Energy Electrochemical Hydroxide System and Method
US9267211B2 (en) 2009-02-10 2016-02-23 Calera Corporation Low-voltage alkaline production using hydrogen and electrocatalytic electrodes
US8834688B2 (en) 2009-02-10 2014-09-16 Calera Corporation Low-voltage alkaline production using hydrogen and electrocatalytic electrodes
US8491858B2 (en) 2009-03-02 2013-07-23 Calera Corporation Gas stream multi-pollutants control systems and methods
US8883104B2 (en) 2009-03-02 2014-11-11 Calera Corporation Gas stream multi-pollutants control systems and methods
US8137444B2 (en) 2009-03-10 2012-03-20 Calera Corporation Systems and methods for processing CO2
US7993511B2 (en) 2009-07-15 2011-08-09 Calera Corporation Electrochemical production of an alkaline solution using CO2
CN103726908A (en) * 2014-01-20 2014-04-16 王晶 Automobile tail gas purification system and purification method thereof
CN106050365A (en) * 2016-06-28 2016-10-26 芜湖澳奔玛汽车部件有限公司 Automobile engine with oil and gas treating mechanism
CN106050365B (en) * 2016-06-28 2018-12-21 芜湖澳奔玛汽车部件有限公司 A kind of automobile engine with oil vapor treatment mechanism

Also Published As

Publication number Publication date
CN101280926A (en) 2008-10-08

Similar Documents

Publication Publication Date Title
US20080236143A1 (en) Waste gas purification apparatus and method therefor
CN101479020B (en) A gas conditioning system
CN110395865B (en) Automatic mud low temperature smoldering pyrolysis device of control and monitoring
KR20230158642A (en) System and method for biomass growth and processing
CN101634453A (en) Quenching process and quenching device of incineration smoke of waste liquid and waste gas containing chlorine
CN102865583B (en) Device and method for saline organic wastewater immersed incineration quenching treatment
EA201690367A3 (en) INSTALLATION FOR ORGANIC RAW MATERIAL PROCESSING BY PYROLYSIS METHOD
KR100849398B1 (en) Life waste burning apparatus having garbage waste water burning function
CN207552149U (en) A kind of oil sludge handles recycling system
JP2007064614A (en) Method for storing heat in heat storage apparatus, and heat storage system
JP2004168589A (en) Reactor for waste incineration and post-incineration dust collection, neutralization and catalysis of waste gas, post-catalytic fertilizer plant and its structure
CN202813394U (en) Saline organic wastewater immersion-type combustion quenching processing device
Li et al. Feasibility of utilizing by-product biogas in breweries after being decarbonized for refrigeration chiller and related primary energy efficiency analysis
CN207828182U (en) A kind of house refuse pollutant treatment system
Vogler et al. Biogas conditioning using hollow fiber membrane contactors
CN101851051A (en) Industrial sludge treatment device
Rettenberger Utilization of Landfill Gas and Safety Measures
ES2909894T3 (en) Process and apparatus for the thermocatalytic conversion of polymeric materials
JP6940715B1 (en) Hydrogen production system
US7806964B2 (en) System and method extracting compression heat in bio-gas treatment plant
RU2342542C1 (en) Power generation plant
CN107974261A (en) A kind of house refuse pollutant treatment system
CN208717234U (en) A kind of garbage derivatived fuel thermal decomposition system
CN203336601U (en) Negative-pressure burning processing system for fluorine containing organic waste liquid and exhaust gas
CN205517160U (en) Integral type refuse handling installation of ecological smokeless environmental protection

Legal Events

Date Code Title Description
STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION