CN103562519A - Burner assembly and method for reducing nox emissions - Google Patents
Burner assembly and method for reducing nox emissions Download PDFInfo
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- CN103562519A CN103562519A CN201280026879.6A CN201280026879A CN103562519A CN 103562519 A CN103562519 A CN 103562519A CN 201280026879 A CN201280026879 A CN 201280026879A CN 103562519 A CN103562519 A CN 103562519A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
- F23L7/002—Supplying water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/20—Mounting or supporting of plant; Accommodating heat expansion or creep
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/20—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products
- F02C3/30—Adding water, steam or other fluids for influencing combustion, e.g. to obtain cleaner exhaust gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
- F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
- F23D14/78—Cooling burner parts
Abstract
A burner assembly for combusting fuel in a combustion zone to reduce NOx emissions includes a water spray subassembly including a water outlet configured to direct water at an angle with respect to an axis of the burner assembly, the water outlet further configured to direct the water in a direction for mixing with the air upstream of the combustion zone. A method is also provided for combusting fuel in a combustion zone to reduce NOx emissions.
Description
Background technique
Gas burner is widely used in various commercial and industrial application.For example, gas burner can be used to the cryogen of vaporization such as LNG Liquefied natural gas.Particularly, cryogen can be heated in submerged combustion vaporizer (SCV).SCV generally includes heat exchanger pipe arrangement and immerses therein the water tank of pipe arrangement.Cryogen flows through pipe arrangement.SCV also comprises to the gas burner of flame in pipe-line system.Pipe-line system has the punching portion section that is called as sparger tube, and this section guides to burner exhaust through the bubbling that makes progress of the water in water tank.Exhaust is followed the pipe arrangement of heating water and immersion and is also become and be heated so that flow through the cryogen of pipe arrangement.Nitrogen oxide (NO in exhaust
x) from water tank, through flue, upwards carried and with being discharged to atmosphere environment.
Although gas burner has many improvement for many years, but still exist further improved lasting demand.For example, still exist improving the demand of the burner of at least one in efficiency, performance, emission control and cost.
Accompanying drawing explanation
Figure 1A is according to the embodiment's of burner assembly of the present invention perspective cut-away schematic view.
Figure 1B is the detail drawing of a part for burner assembly shown in Figure 1A.
Fig. 2 is the partial sectional view that comprises the master burner of the water source that can use and spraying nozzle in burner assembly shown in Figure 1A.
Fig. 3 A is the plan view of a part for master burner shown in Fig. 2.
Fig. 3 B is the front view of a part for master burner shown in Fig. 3 A.
Fig. 4 is the sectional view of the end portion of master burner shown in Fig. 2.
Fig. 5 A is the front view of a part for the water spray sub-component that can use in burner assembly shown in Fig. 1.
Fig. 5 B is the plan view of sub-component of spraying water shown in Fig. 5 A.
Fig. 6 is the amplification view of the end portion of master burner shown in Fig. 2.
Fig. 7 is another embodiment's of master burner amplification view.
Embodiment
Although illustrate and described the present invention herein with reference to specific embodiment, details shown in the present invention is not intended to be confined to.On the contrary, in the scope of the equivalent of claim and can carry out in detail various modifications without departing from the invention.
In general, the burner assembly in examples shown is substantially or completely not containing the water-cooled burner of refractory material.The oxidizer source that is preferably the fuel source of gas source and is preferably blower provides the stream of these reactants for burner.
Burner assembly preferably includes water spray system.This system comprises the water pipeline being communicated with water source.Water source is preferably the water tank that stores water, but can be public water source alternatively.
Burner assembly especially can be combined with LNG submerged combustion vaporizer (SCV).Such vaporizer can be used for heating and/or the freezing and cryogen of vaporizing.Although often use together with propane with oxygen, nitrogen, ethene, ammonia, such vaporizer system is alternatively for for example at base load and the peak regulation gasification facility LNG that vaporizes again.
SCV is the burning hot exchanger of a kind of indirection point, and it has burner and the process coil pipe that can be included in single container.This design is based on submergence discharge principle, and wherein burner combustion product is discharged in water-bath, and water-bath can be used as heat transfer medium with the LNG in vaporization coil pipe.
In single burner SCV, combustion air is introduced in burner two positions conventionally.Most of air enters (secondary combustion air) in upper volute section, and remaining air (primary combustion air) is provided to fuel gas sparger region around.Utilize this layout, in the intermediate section that burner makes progress between flame to two spiral case, wherein combustion gas react jointly with secondary combustion air.Secondary combustion air enters upper volute via tangential inlet, thereby gives air swirl motion.This cause with the combustion gas that produce from burner fully mix and gas before being discharged into the component air manifold tube being positioned at below process tube bank along the follow-up recirculation of the axis of burner.
Found that single-point water spray can reduce NO herein
xdischarge.By the top end at burner nozzle, water jetting apparatus is installed, can be reduced flame temperature, thus delayed heat NO
x.NO
xtherefore level can reduce at least 50%.
According to a preferred aspect of the present invention, SCV adopts has the gas nozzle design that water sprays, and this water is injected under maximum operational condition and controls single burner to produce correction to 3% dry oxygen (O
2), be low to moderate 30 parts/1,000,000 parts (ppm) or following NO
xdischarge.Water sprays and can carry out with having the water spout circular cone to the solid cone angle of 90 degree of vertical 60 degree for example.
Hollow cone such as 210 degree hollow cones is used to guide water when Jiang Shui sprays in system.Hollow cone nozzle provides compares the result that solid circular cone improves.Can believe, thereby the performance of improvement results from water spray, at diverse location place, be introduced into the fact of combustion air cooling flame.Correspondingly, from the NO of burner
xdischarge can be reduced to 20ppm or lower.
Referring to accompanying drawing, the invention provides a kind of burner assembly such as assembly 10 substantially, this assembly is formed in zone of combustion combustion fuel to reduce NO
x discharge.Burner assembly 10 comprises air nozzle sub-component, and air nozzle sub-component comprises the air nozzle conduit 24 that the end portion along axis towards burner assembly 10 is extended, for example, and the air nozzle conduit being provided by master burner air nozzle and cooling coil.Air nozzle conduit has for holding the inner region of air stream 56.
The water spray sub-component that comprises water outlet is provided, and this water outlet is configured to guide at angle water with respect to axis.Water outlet is also formed in the direction of annular pass and guides water to mix with the air of upstream, zone of combustion.Water is only used by way of example, because can use other coolant composition that comprises or do not comprise water.
The water outlet of water spray sub-component comprises the water spout such as nozzle 26 or 90 alternatively.Water spout can be formed at respect to guiding water in the radially outer direction of axis.The spray angle A3 guiding water that particularly, can be configured to be greater than 180 degree such as the water spout of nozzle 90 makes be less than 90 degree or make to be less than 85 degree or to take the spray angle A3 guiding water of approximately 210 degree in the angle A 4 between axis and the injection direction of water angle A 4 between axis and the injection direction of water is spent for approximately 75 with the spray angle A3 guiding water of 190 to 230 degree in the angle A 4 between axis and the injection direction of water.
Therefore water spout can be formed in hollow cone and guide water that water is not outwards guided from water spout along axis A.Water spray sub-component comprises the water conduit such as water pipe 44 that is positioned in extension in fuel gas conduit alternatively, and water spout is connected to the end of water conduit.Burner assembly comprises the inner annular channel being limited between water conduit and fuel gas conduit alternatively, and inner annular channel is formed in the direction of axis and guides fuel to be delivered to zone of combustion.The air nozzle conduit of air nozzle sub-component can comprise the cooling coil that supplies water and cycle through.
The present invention also provide a kind of for transforming existing burner assembly so that can be with the NO reducing
xbe emitted on the method for combustion fuel in zone of combustion.The method can be used together with burner assembly, and this burner assembly has: air nozzle sub-component, and it comprises air nozzle conduit, for example master burner air nozzle and cooling coil 24; Gas nozzle sub-component, it comprises fuel gas conduit, for example fuel gas pipe 34; And water spray sub-component, it comprises water outlet, for example nozzle 26 or 90.The method comprises water outlet is configured to respect to the axis of air nozzle conduit at angle and in the direction of the annular pass towards between air nozzle conduit and fuel gas conduit, guide water to mix with the air of upstream, zone of combustion.
The method comprises alternatively the water spout of the water spray sub-component such as nozzle 26 or 90 is configured in radially outer direction, guiding water with respect to axis.Particularly, the method comprises: the spray angle A3 guiding water that water spout is configured to be greater than 180 degree makes be less than 90 degree or make to be less than 85 degree or to take the spray angle A3 guiding water of approximately 210 degree in the angle A 4 between axis and the injection direction of water angle A 4 between axis and the injection direction of water is spent for approximately 75 with the spray angle A3 guiding water of from 190 to 230 degree in the angle A 4 between axis and the injection direction of water.
The method comprises alternatively and is configured to guide water in hollow cone water is not outwards guided from water spout along axis A water spout.
The present invention also provides a kind of and has used buner system so that the NO to reduce
xbe emitted on the method for combustion fuel in zone of combustion.The method comprises: in the direction generally along axis, guide fuel to be delivered to zone of combustion by fuel gas conduit; In the direction generally along axis, by the annular pass being limited between air nozzle conduit and fuel gas conduit, towards zone of combustion, guide air; And with respect to axis at angle and in the direction towards annular pass, guide water to mix with the air of upstream, zone of combustion.
The step of the guiding water of the method is included in alternatively with respect to guiding water in the radially outer direction of axis.For example, the spray angle A3 guiding water that the method comprises being greater than 180 degree makes be less than 90 degree or make to be less than 85 degree or to take the spray angle A3 guiding water of approximately 210 degree in the angle A 4 between axis and the injection direction of water angle A 4 between axis and the injection direction of water is spent for approximately 75 with the spray angle A3 guiding water of from 190 to 230 degree in the angle A 4 between axis and the injection direction of water.The step of guiding water also can be included in hollow cone and make water outwards not directed from water spout along axis from water spout guiding water.
Referring specifically to Figure 1A, burner assembly 10 according to an embodiment of the invention comprises for the top spiral case 12 of circulating air and bottom spiral case 14.The circular cone assembly 16 with water jacket extends between bottom spiral case 14 and top spiral case 12, thereby is the mobile passage that provides of products of combustion.Part platform support 18 is connected with top spiral case 12.Burner top board 20 is sealed top spiral case 12.
Referring now to Fig. 2,, the parts of the assembly of master burner 22 are shown in sectional view.Master burner 22 comprises air nozzle sub-component, gas nozzle sub-component and water spray sub-component substantially.Particularly, master burner 22 comprises master burner air nozzle and cooling coil 24.Master burner air nozzle and cooling coil 24 connect to receive the air-source that upwards flows through substantially master burner air nozzle and cooling coil 24.
Master burner 22 also comprises gas nozzle assembly 28 and is positioned at least in part the water spray assembly 30 in gas nozzle assembly 28.Gas nozzle assembly 28 is attached to fuel gas pipe 34 via joiner 32.Then, fuel gas pipe 34 is connected to fuel gas pipe 38 via threeway 36.Fuel gas pipe 38 connects to provide fuel gas entrance 42 via elbow 40 again.Entrance 42 is connected to fuel gas source (not shown).
As the arrow in Fig. 2 is indicated substantially, for the fuel gas stream 54 in the roughly direction of the end portion towards master burner 22 defines passage.Meanwhile, for the current 58 of the end portion towards master burner 22 define passage, current 58 are flowed substantially in the passage in being arranged on fuel gas stream 54 or conduit.For defining passage between cooling coil 24 and the fuel gas pipe 34 and also air stream 56 in the general direction of the end portion 23 towards master burner 22.
Should be appreciated that master burner 22 is configured for the burning of the mixture of fuel and air, this mixture comprises the fuel of fuel gas stream 54, the air of air stream 56 and the air in the base portion of spiral case 14.This burning is created in the flame that is substantially depicted as 25 in Fig. 2, and its side at the axis along master burner 22 extends upward, and this direction is middlely orientated along vertical axis A embodiment illustrated in fig. 2.The end that the base portion of flame becomes to exceed master burner 22 along axis A by general location is compared with short distance.Again referring to Figure 1A, flame by extension towards or enter circular cone assembly 16.
Referring to Fig. 3 A and Fig. 3 B, the end portion of master burner 22 is respectively shown in plan view and side view.Master burner 22 comprises the water spout 26 of the top board 62 that extends above master burner 22.The a pair of lug 64 that is mutually offset in this embodiment 180 ° extends radially outwardly for the immovable point of setting tool is provided from the axis A of master burner 22.Master burner 22 also comprises the pipe 66 with wall, and wall has a plurality of mouthfuls 68 or the hole being formed at wherein, from the fuel gas stream 54 in pipe 66, can be conducted through these mouthfuls or hole.
Referring now to Fig. 4,, the end portion of master burner 22 is shown in sectional view, to the roughly direction of fuel gas stream 54 and current 58 is shown.These streams along the roughly guiding in the same direction of the axis of master burner 22 (for example, be parallel to or the direction of the A that approximately parallels to the axis on).Current 58 move through the water pipe 44 of water spray sub-component.Fuel gas stream 54 moves in the annular pass being defined between the internal surface of fuel gas pipe 34 and the outer surface of water pipe 44.
Referring now to Fig. 4, Fig. 5 A and Fig. 5 B,, at side view and overlooking, there is shown respectively the feature of water spray sub-component.Water spray sub-component comprises the water pipe part 70 of the water pipe 44 extending from pipe connector 72.Upper centering member 74 (way of example of only usining in this embodiment illustrates three as spoke) is from water pipe part 70 radiation direction extensions and be substantially positioned at the end distance D apart from pipe connector 72.Upper centering plate 74 has thickness T and is configured to provide the water pipe part 70 that centering function makes water pipe 44 can be interior placed in the middle at the fuel gas pipe 34 of master burner 22.Lower centering plate 76 is also for this object.
The parts of water spray sub-component are shown in Fig. 5 A.It has according to the length L of the size Selection of master burner 22.As shown in Figure 5 B, upper centering spoke 74 extends out to the distance of the diameter that is similar to lower centering plate 76, and such spoke for example, is spaced apart from each other with angle A 1 (120 °).
Referring now to Fig. 6,, show according to the details of the end portion of the master burner 22 of an exemplary embodiment.In this embodiment, water spout 26 is for having the solid circular cone spraying nozzle of water spray cone angle A2.Therefore, current 58 move through water pipe part 70, by joiner 72, and upwards guide with the end from master burner 22 in solid circular cone by the nozzle opening of water spout 26.Water spray cone angle A2 is the angle of the solid spray circular cone that produced by water spout 26.
Master burner 22 is also included within the installing ring 78 of its terminal part office, and it provides supporting element for one or more packing rings 80 or Sealing.Installing ring 78 and packing ring 80 provide for sealing the device of the plate 62 of master burner 22, thereby reduce or prevent by the fuel gas stream in the space between the aperture 73 in joiner 72 and end plate 62.Sealing is shown in broken lines in Fig. 6, makes the position of installing ring 78 and packing ring 80 can be adjusted to the lower surface 63 that makes packing ring 80 contact end plate 62, thereby sealing is provided.This position of packing ring 80 is shown in broken lines in Fig. 6.Therefore, all fuel gas streams 54 all pass through gas nozzle assembly 28 by mouth 68 discharges in the pipe forming gas nozzle assembly 28 substantially.
Fig. 7 illustrates with another exemplary embodiment of the present invention shown in the amplification view of the end portion of master burner 22.Corresponding to the element of describing above with reference to Figure 1A-6, element shown in Fig. 7 is indicated by the respective figure mark that increases by 100.90 structures of nozzle shown in Fig. 7 are different from nozzle shown in Fig. 6 26 to a certain extent.For example, water spout 90 provides hollow cone nozzle rather than solid circular cone water spout.
More specifically, nozzle 90 reboots current 158, and current are discharged the axis A radially outward from master burner in hollow cone.Like this, water reboots by radially outward and away from the base portion of flame, and this base portion will be formed on the position that exceeds the end of master burner along axis A.By the tail end at burner, use hollow cone spray shapes, can in the spray shapes away from flame, reboot current.In addition, such spray shapes make can towards or the path that enters the air stream of upstream, zone of combustion reboot water spray.Although can use various nozzle configuration, but a suitable nozzle embodiment is hollow cone nozzle, the PJ type nozzle that for example can derive from the Delavan Spray Technologies of Delavan Ltd, the said firm is the wholly-owned subsidiary of Goodrich Corporation.Such designs of nozzles becomes to use outside " pivot (pintle) " inflector to produce hollow cone spray pattern.
Water is introduced in the annular pass 29 of extending between the internal surface of master burner air nozzle and cooling coil 24 and the outer surface of the outer surface of fuel gas pipe 34 or gas nozzle assembly 28.In other words, water is imported in air stream 56 when through master burner air nozzle and cooling coil 24.
This orientation of water spray can be entrained in air stream 56 with upstream Jiang Shui before zone of combustion, thereby further reduced the NO by the flame generation of burner
xdischarge.In addition, water spray contributes to mix with the air of upstream, zone of combustion rather than water is guided in the base portion of flame along axis A.
Although use in the illustrated embodiment at the water spout of the terminal part office of burner assembly, water is introduced in air, but it is contemplated that, can, in airborne any position of flame location upstream, preferably in the passage of air stream 56 being introduced to zone of combustion, introduce water.For example, water can be introduced in any position in the path along current 58, is included in base portion place in the region of elbow 46 or along any other position in the path of current 58.
Alternatively, current can radially inwardly be introduced air stream 56 from the structure of master burner air nozzle and cooling coil 24.For example, by placing in cooling coil radially inwardly towards one or more nozzles of fuel gas pipe 34 or gas nozzle assembly 28, water can be introduced air stream 56 from cooling coil.In other words, can be by a part that flows through the water of cooling coil radially inwardly being guided be entrained in the interior minimizing NO that uses it for of air stream 56 of upstream, zone of combustion
xdischarge.
example
Choose data for the NO in water spout test
xreduce.Stack emission data point is recorded on LNG vaporizer.With the system acquisition reading (～92 ° of solid circular cone spray pattern A2) that comprises water spout shown in Fig. 6.Also with water spout shown in Fig. 7, obtain test reading (210 ° of hollow cone spray pattern A3).
Test reading provides in following table:
The abbreviation of using:
MMSCFD – mono-Million standard cubic feet/sky
CO – carbon monoxide
NO
x– is for nitrogen oxide NO and a NO
2the general tems of (nitrous oxide and nitrogen dioxide)
PPM – part/1,000,000 part
Above-mentioned test illustrates and when apparatus has the water spout 90 of hollow cone sprayer rather than solid circular cone water jetting apparatus to replace the water spout 26 of Fig. 6, occurs NO
xfurther minimizing.More specifically, water spout 90 reboots current 158, and current are extended radially outwardly the axis A from master burner in hollow cone.Like this, water is rebooted into radially outward and away from the base portion of flame, this base portion will be formed on the position that exceeds the far-end of master burner along axis A.This is conducive to water to be entrained in the air of upstream of that point that air enters zone of combustion, thereby reduces NO
xdischarge.
Although illustrated and described various embodiments of the present invention herein, should be appreciated that these embodiments only provide with way of example.Without departing from the spirit and scope of the present invention, those skilled in the art will expect various modification, modification and replacement.Therefore, the disclosure of this paper is intended to contain all such variants and modifications falling in the spirit and scope of the present invention.
Claims (16)
- One kind at zone of combustion combustion fuel to reduce NO xthe burner assembly of discharge, comprising:Air nozzle sub-component, described air nozzle sub-component comprises the air nozzle conduit that the end portion along axis towards described burner assembly is extended, described air nozzle conduit has for holding the inner region of air stream;Gas nozzle sub-component, described gas nozzle sub-component comprises the fuel gas conduit in the described inner region that is positioned at least in part described air nozzle conduit, and described fuel gas conduit is formed in the direction of described axis and guides fuel to be delivered to described zone of combustion;Passage, described channel arrangement is between described air nozzle conduit and described fuel gas conduit, and described passage is formed in the direction of described axis and guides air to be delivered to described zone of combustion; AndWater spray sub-component, described water spray sub-component comprises the water outlet that is configured to guide at angle with respect to described axis water, described water outlet is also formed in the direction of described passage and guides described water to mix with the air of upstream, described zone of combustion.
- 2. burner assembly according to claim 1, is characterized in that, described water outlet comprises spraying nozzle.
- 3. burner assembly according to claim 2, is characterized in that, described spraying nozzle is formed at respect to guiding described water in the radially outer direction of described axis.
- 4. burner assembly according to claim 3, is characterized in that, the spray angle radially outward that described spraying nozzle is configured to be greater than 180 degree guides described water, makes the angle between described axis and the injection direction of described water be less than 90 degree.
- 5. burner assembly according to claim 4, is characterized in that, described spraying nozzle is configured to guide described water with the spray angle radially outward of from 190 to 230 degree, makes the angle between described axis and the injection direction of described water be less than 85 degree.
- 6. burner assembly according to claim 5, is characterized in that, described spraying nozzle is configured to guide described water with the spray angle radially outward of approximately 210 degree, and making the angle between described axis and the injection direction of described water is approximately 75 degree.
- 7. burner assembly according to claim 3, is characterized in that, described spraying nozzle is formed at radially outward guiding water in hollow cone, and described water is not outwards guided from described spraying nozzle along described axis.
- 8. burner assembly according to claim 3, is characterized in that, described water spray sub-component is also included in the water conduit extending in described fuel gas conduit, and described spraying nozzle is connected to the end of described water conduit.
- 9. burner assembly according to claim 8, it is characterized in that, also comprise the inner annular channel being arranged between described water conduit and described fuel gas conduit, described inner annular channel is formed in the direction of described axis and guides described fuel to be delivered to described zone of combustion.
- 10. burner assembly according to claim 1, is characterized in that, described air nozzle conduit comprises makes described water can cycle through cooling coil wherein.
- 11. 1 kinds at zone of combustion combustion fuel to reduce NO xthe method of discharge, comprising:In the direction generally along axis, by fuel gas conduit, provide fuel to be delivered to described zone of combustion;In the direction generally along described axis, by the annular pass being arranged between air nozzle conduit and described fuel gas conduit, towards described zone of combustion, provide air; AndWith respect to described axis at angle and in the direction towards described annular pass, provide water to mix with the air of upstream, described zone of combustion.
- 12. methods according to claim 11, is characterized in that, described in provide the step of water to comprise: on respect to the radially outer direction of described axis, guide described water.
- 13. methods according to claim 12, is characterized in that, described in provide the step of water to comprise: to be greater than the spray angle radially outward of 180 degree, guide described water, make the angle between described axis and the injection direction of described water be less than 90 degree.
- 14. methods according to claim 13, is characterized in that, described in provide the step of water to comprise: the spray angle radially outward with from 190 to 230 degree guides described water, makes the angle between described axis and the injection direction of described water be less than 85 degree.
- 15. methods according to claim 14, is characterized in that, described in provide the step of water to comprise: the spray angle radially outwards with approximately 210 degree guide described water, and making angle between described axis and the injection direction of described water is approximately 75 degree.
- 16. methods according to claim 11, is characterized in that, described in provide the step of water to comprise: in hollow cone, from water spout radially outward guiding water, described water is not outwards guided from described water spout along described axis.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201161472419P | 2011-04-06 | 2011-04-06 | |
| US61/472,419 | 2011-04-06 | ||
| US13/157,336 US20120255472A1 (en) | 2011-04-06 | 2011-06-10 | Burner assembly and method for reducing nox emissions |
| US13/157,336 | 2011-06-10 | ||
| PCT/US2012/028442 WO2012138447A1 (en) | 2011-04-06 | 2012-03-09 | Burner assembly and method for reducing nox emissions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103562519A true CN103562519A (en) | 2014-02-05 |
Family
ID=46965094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280026879.6A Pending CN103562519A (en) | 2011-04-06 | 2012-03-09 | Burner assembly and method for reducing nox emissions |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US20120255472A1 (en) |
| EP (1) | EP2694790A4 (en) |
| JP (1) | JP2014510257A (en) |
| KR (1) | KR20140027975A (en) |
| CN (1) | CN103562519A (en) |
| AU (1) | AU2012240534A1 (en) |
| CA (1) | CA2832107A1 (en) |
| CL (1) | CL2013002850A1 (en) |
| RU (1) | RU2013149146A (en) |
| SG (1) | SG194114A1 (en) |
| WO (1) | WO2012138447A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4084934A (en) * | 1972-02-05 | 1978-04-18 | Mitsubishi Precision Co., Ltd. | Combustion apparatus |
| US7000403B2 (en) * | 2004-03-12 | 2006-02-21 | Power Systems Mfg., Llc | Primary fuel nozzle having dual fuel capability |
| US20060042253A1 (en) * | 2004-09-01 | 2006-03-02 | Fortuna Douglas M | Methods and apparatus for reducing gas turbine engine emissions |
| US20060090677A1 (en) * | 2004-11-02 | 2006-05-04 | Babcock-Hitachi K.K. | After-air nozzle for two-stage combustion boiler, and a two-stage combustion boiler, boiler and combustion method using the same |
| US7047748B2 (en) * | 2002-12-02 | 2006-05-23 | Bert Zauderer | Injection methods to reduce nitrogen oxides emission from gas turbines combustors |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3255966A (en) * | 1964-09-10 | 1966-06-14 | Texaco Development Corp | Annulus type burner for the production of synthesis gas |
| US3729285A (en) * | 1972-05-22 | 1973-04-24 | G Schwedersky | Burner and method of operating it to control the production of nitrogen oxides |
| US4257763A (en) * | 1978-06-19 | 1981-03-24 | John Zink Company | Low NOx burner |
| CH674561A5 (en) * | 1987-12-21 | 1990-06-15 | Bbc Brown Boveri & Cie | |
| DE4033710A1 (en) * | 1989-10-31 | 1991-05-02 | Asea Brown Boveri | Combustion chamber for gas turbine - has system to spray water into combustion air to reduce nitrous oxide in exhaust gases |
| US5129582A (en) * | 1990-12-26 | 1992-07-14 | General Turbine Systems, Inc. | Turbine injector device and method |
| JP2565437B2 (en) * | 1991-09-03 | 1996-12-18 | 株式会社ヒラカワガイダム | Gas turbine device equipped with tube nest combustion type combustor |
| NO324171B1 (en) * | 2006-01-11 | 2007-09-03 | Ntnu Technology Transfer As | Method of combustion of gas, as well as gas burner |
| JP5651869B2 (en) * | 2009-10-30 | 2015-01-14 | リード工業株式会社 | Gas-liquid mixing nozzle, emulsion fuel combustion system using this gas-liquid mixing nozzle, and environmental purification liquid spray system |
-
2011
- 2011-06-10 US US13/157,336 patent/US20120255472A1/en not_active Abandoned
-
2012
- 2012-03-09 AU AU2012240534A patent/AU2012240534A1/en not_active Abandoned
- 2012-03-09 WO PCT/US2012/028442 patent/WO2012138447A1/en active Application Filing
- 2012-03-09 EP EP12767351.5A patent/EP2694790A4/en not_active Withdrawn
- 2012-03-09 KR KR1020137029241A patent/KR20140027975A/en not_active Application Discontinuation
- 2012-03-09 SG SG2013074737A patent/SG194114A1/en unknown
- 2012-03-09 RU RU2013149146/06A patent/RU2013149146A/en not_active Application Discontinuation
- 2012-03-09 JP JP2014503665A patent/JP2014510257A/en active Pending
- 2012-03-09 CN CN201280026879.6A patent/CN103562519A/en active Pending
- 2012-03-09 CA CA2832107A patent/CA2832107A1/en not_active Abandoned
-
2013
- 2013-10-04 CL CL2013002850A patent/CL2013002850A1/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4084934A (en) * | 1972-02-05 | 1978-04-18 | Mitsubishi Precision Co., Ltd. | Combustion apparatus |
| US7047748B2 (en) * | 2002-12-02 | 2006-05-23 | Bert Zauderer | Injection methods to reduce nitrogen oxides emission from gas turbines combustors |
| US7000403B2 (en) * | 2004-03-12 | 2006-02-21 | Power Systems Mfg., Llc | Primary fuel nozzle having dual fuel capability |
| US20060042253A1 (en) * | 2004-09-01 | 2006-03-02 | Fortuna Douglas M | Methods and apparatus for reducing gas turbine engine emissions |
| US20060090677A1 (en) * | 2004-11-02 | 2006-05-04 | Babcock-Hitachi K.K. | After-air nozzle for two-stage combustion boiler, and a two-stage combustion boiler, boiler and combustion method using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012138447A1 (en) | 2012-10-11 |
| CA2832107A1 (en) | 2012-10-11 |
| SG194114A1 (en) | 2013-11-29 |
| CL2013002850A1 (en) | 2014-07-04 |
| KR20140027975A (en) | 2014-03-07 |
| EP2694790A1 (en) | 2014-02-12 |
| US20120255472A1 (en) | 2012-10-11 |
| EP2694790A4 (en) | 2014-09-17 |
| RU2013149146A (en) | 2015-05-20 |
| JP2014510257A (en) | 2014-04-24 |
| AU2012240534A1 (en) | 2013-10-24 |
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Application publication date: 20140205 |