DE19736761A1 - Scrubber removing gases and particulates from e.g. flue gas flows - Google Patents

Abstract

The scrubber has spray nozzles (40) producing swirl in different directions, relative to, and compensating rotation of, the principal flow (11). An Independent claim is included for double swirl nozzles suitable for use in the equipment. These include swirl chambers, conical nozzles and a constriction, and share a common rear wall with an opening including perforated sheet. The chambers may further include swirl-inducers and flow-stabilizing irregularities.

Description

The invention relates to a cleaning device from separation of gaseous or particulate ingredients from gas flow with a variety of swirl spray nozzles for insertion and distributing a wash liquid in the gas stream.

For separating gaseous or particulate ingredients Air or gas flows are so-called gas scrubbers sets, where a washing liquid over a variety of Spray nozzles distributed as evenly as possible in the gas flow is introduced across the cross section. Such gas scrubbers that also known as jet washers are great in the technical implementation, for example, flue gas cleaning system conditions in which acidic flue gas components such as sulfur dioxide, Chlorine or hydrogen fluoride, as well as to a lesser extent Smoke gas dust by using appropriate washing liquid be separated.

The nozzles used in such gas scrubbers are in the Usually designed as swirl nozzles. The flow of liquid that exits through the nozzle, is in the nozzle or at Leaving the nozzle imprinted a twist so that the liquid  droplets of speed next to the speed components in axia ler and radial direction - as contained in a spray cone - also have a peripheral component. This swirl generation has proven beneficial for the atomization process because with it a fine drop spectrum, a spray jet stability and the corresponding beam expansion for the distribution of the Washer fluid is reached in the gas stream. Spray nozzles similar cher type, in which a swirl to produce a conical gene veil is provided are from DE-OS 26 11 387 known where a slurry atomizer is described at which the liquid tangentially into a circular throat introduced and made in the form of a conical veil fine droplets emerge at least over an edge.

It has been shown that in the arrangement mentioned above disadvantages with a large number of swirl spray nozzles visibly a uniform flow through the washer occur, which also affected the separation performance. This is particularly the case with gas scrubbers that are in the form large flue gas scrubbers work in the counterflow principle. At the gas flow through a side gas inlet inserted into a guide channel of the washer, flows through it from bottom to top, becomes in a counter current range with the washing liquid from the variety sprayed evenly on the cross section of nozzles and then emerges from a laterally arranged or centrally arranged the outlet connection again. Between the inserted spray liquid droplets and the gas flow takes place an exchange of impulses takes place, which is mainly noticeable as a pressure loss that the flow at through flow of the washer suffers. The same-minded twist of the Spray nozzles also leads to the fact that along the walls of the Wä shear in or against the inflow direction of the gas flow directed impulse is transmitted to this, which in turn a large-scale rotation of the flow field of the gas stream causes. This in turn leads to an asymmetrical through flow of gas scrubber. It has been shown that the  Gas flow from the inlet port with low pressure lust along the left washer wall in the left rear corner penetrate and there insufficient cleaned and with relative can rise at high speed. This creates one very inhomogeneous and pronounced asymmetrical distribution of the Residual ingredients in the gas flow behind the scrubber. Out the inhomogeneous separation in the scrubber again results poor efficiency.

It is therefore the object of the present invention, from here create help through simple measures.

To solve this problem, a cleaning facility device of the type mentioned provided that swirl spray with, based on the main flow direction of the gas stream mes, different swirl directions to compensate for a Swirls can be used in the main flow. Through this Design succeeds in that by overlaying the Single vertebrae alternating with left or right twist arranged swirl spray nozzles to extinguish the swirl components comes so that a reaction on the gas flows tion does not take place or only takes place in a greatly weakened form. This in turn leads to an even separation and thereby to a higher efficiency without additional costly measures must be taken.

In an advantageous development of the invention in a Reini supply device arranged in rows next to each other Swirl spray nozzles can be provided that neighboring Swirl spray nozzles in opposite directions in each row have, so that already in a relatively small space desired overlap of the individual vertebrae and thus an ins overall largely swirl-free flow is reached. Before it is partly in further development of the invention at egg nem scrubber with a guide channel for the gas flow, the a distance in front of the swirl spray nozzles has the inlet connection for the gas flow when the rows  of the swirl spray nozzles transverse to the direction of entry of the gas tromes run in the guide channel. In further training of Invention can be done with one with a symmetrical to one built up the central plane extending the inlet connection Guide channel are provided that the swirl spray nozzles that to the left of the median plane, a twist in opposite directions the twist that mirrored them to the right of the center have live swirl spray nozzles. It is also but also possible, nozzles of the same swirl direction to the on to group flow conditions adapted in the scrubber, so that the flow can also be influenced positively can. In a further development of the invention, for example the tangential component of the adjacent to the parallel to the Arranged mid-plane walls of the guide channel Swirl spray nozzles to the side of the guide channel point, which is provided with the inlet connector. By a such a nozzle arrangement can be in the vicinity of the side walls of the Washer a pulse compo opposed to the inflow elements of the control field. With that the Nei counteracted the gas flow, along the rain depleted flow to the opposite washer wall and to ascend there uncleaned. Instead, it will Not cleaned flue gas intensifies into the intense, new central rain field of the washer.

In a development of the invention is suitable for a Reini supply device of the type mentioned very particularly a swirl spray nozzle that acts as a double swirl spray nozzle with two coaxial, oppositely emerging spray jets opposite twist is formed. There are doubles jet swirl spray nozzles (DE 26 11 387 A1), but there occur the two opposite spray jets with the same swirl out. With such nozzles, swirl compensation in the current cannot be reached.

Of course, it would also be possible to replace the invention double twist spray nozzles with opposite twist  Spray jets also two swirl spray nozzles of known design watch, these nozzles are offset by 180 ° to each other. But this would be the use of twice the number Make spray nozzles necessary, which increases the effort too much would. The new double swirl spray nozzles with set swirl of the exit jets can be relatively ß easy manufacture, as will be explained. she also need only one washing liquid connection at a time, if they are designed accordingly.

In a further development of the invention, the new swirl spray nozzle therefore two coaxially arranged, with their outlet openings swirl chambers pointing in opposite directions, the one common, each in that of the outlet openings have an inflow opening opening towards the area facing away from the opens into each chamber with an arm that is tangential to the drawn ordered, but each from the central plane of the inflow opening from chamber wall lying on opposite sides is aimed. This configuration enables a common Inflow nozzles are provided, nevertheless, by the ge separated feed arms in different swirl directions reached in two opposite spray jets. Also that from the spray jets on the flow in the washer caused impulse entry, which leads to a back pressure compensated by the new nozzle.

In a development of the invention, both swirl chambers Tei le of hollow cone or full cone spray nozzles. Here results there is this possibility of using the nozzle as a hollow cone spray nozzle by training that a common partition each Bottom of the swirl chambers forms, and that this partition in the Nozzle axis is provided with an opening. In further training this idea can be opened by a central one lacing in the area of the inlet opening of the swirl chamber det be, and it can further decouple the swirl a perforated disc must be inserted into the opening  Diameter is not larger than one of the outlet openings, so that an assembly of the perforated disc is possible.

The double spray nozzle can also be designed so that the partition wall on both sides with elevations and depressions Generation is provided a full cone spray. It is also possible to dispense with a partition and in each swirl chamber, which are now each not by a tan potential to be fed to her wall-running arm needs to provide a swirl insert that the desired opposite swirl generated in both swirl chambers. In Wei This idea can be developed between the swirl operations a partition can also be provided, the elevations for Sta bilization of the flow are assigned.

Finally, it is also possible to use the coaxial swirl and their outlet openings are not the same size stalten, so that with such nozzles only partial compensation of the twist is achieved, for example during use of these nozzles in the wall area as previously indicated can be beneficial.

The invention is based on exemplary embodiments in the Drawing shown and is described below. It demonstrate:

Fig. 1 shows a schematic longitudinal section of a scrubber according to the invention,

Fig. 2 is an enlarged representation of the section through Fig. 1 along the line II-II,

Fig. 3 is a section similar to FIG. 2, but through a gas scrubber with a circular guide channel for the gas,

Fig. 4 is similar to a counter-current scrubber in longitudinal section, Fig. 1, but in another embodiment of the invention He,

Fig. 5 is a section through the guide channel of the countercurrent scrubber of Fig. 4 taken along line VV in an enlarged representation,

Fig. 6 is an enlarged side view of one of the double nozzle such as those used in the embodiment of FIGS. 4 and 5,

Fig. 7 shows the sectional view of the double jet nozzles

Fig. 6 along the line VII-VII in Fig. 6,

Fig. 8 is a Drallsprühdüse similar to FIG. 6, but in another embodiment,

Fig. 9 shows the cross section of the Drallsprühdüse of FIG. 8 in egg ner representation according to Fig. 7,

Fig. 10 shows a further embodiment of a Drallsprühdüse according to the invention,

Fig. 11 shows the cross section through the Drallsprühdüse of Fig. 10,

Fig. 12 shows the cross section through a Drallsprühdüse similar to FIGS. 10 and 11, but in a variant

Fig. 13 shows a further variant of a Drallsprühdüse according to the invention,

Fig. 14 shows the section through the Drallsprühdüse of Fig. 13 along the line XIV-XIV in a type with swirl inserts into the swirl chambers,

Fig. 15 shows a variant of Drallsprühdüse of Fig. 13 with egg ner partition between the swirl inserts,

Fig. 16 shows the section through the Drallsprühdüse of Fig. 15,

Fig. 17 shows the section through the Drallsprühdüse of FIG. 16 taken along section line XVII-XVII,

Fig. 18 shows a further variant of a Drallsprühdüse according to the invention without swirl inserts,

Fig. 19 shows the section through the Drallsprühdüse of Fig. 18, and

Fig. 20, the representation of the cross section according to the section line XX-XX in Fig. 19.

In Figs. 1 and 2, a counter-current scrubber is shown which can be used for example for flue gas cleaning. The countercurrent scrubber consists of a vertically arranged shaft-like guide channel 1 with a rectangular cross-section, with an inlet connection 2 opening laterally in this guide channel approximately in the lower third, through which the raw gas to be cleaned is first introduced into an inlet and distribution area in the direction of arrow 3 can. This raw gas flows upwards and is sprayed in countercurrent in the upper third of the guide channel 1 in the region 9 with a washing liquid which emerges from a plurality of swirl spray nozzles 4 distributed uniformly over the cross section of the guide channel 4 in the direction of the arrows 5 . This Waschflüs liquid is withdrawn via a pump 6 from a sump 7 , which is located at the lower end of the guide channel 1 below the inlet connector 2 . In this sump, on the one hand, the gaseous or particulate contents separated by the scrubbing liquid from the rising raw gas are deposited. The sump 7 is also supplied with washing liquid via a white pump 8 . The raw gas flowing through the loading area 9 of the spray nozzles 4 in the guide channel 1 upward is then freed in a droplet separator 10 from the liquid entrained when flowing through the area 9 and occurs in the sense of arrow 11 as clean gas from the outlet port 12 of the guide channel 1 out.

As can also be seen in FIG. 1, the swirl spray nozzles 4 are arranged one above the other in three planes in the region 9 , each spray nozzle plane via the lines 13 , 14 , 15 being separated with washing liquid which can be supplied under a certain pressure is adjustable via pressure control valves 16 , the swirl spray nozzles 4 in the direction of arrows 17 to be guided.

Fig. 2 shows that in each plane, the swirl spray nozzles 4 are arranged in rows 18 at the same distance from each other, which are parallel to each other and perpendicular to the inlet direction 3 of the raw gas. The Fig. 2 also shows that in each row 18 adjacent spray nozzles 4 or 4 'different twist directions sen aufwei 19 and 20 respectively. For example, the swirl 19 is oriented counterclockwise, while the swirl 20 is oriented clockwise. The overall arrangement is such that the nozzles lying in the region of the side walls 21 of the guide channel 1 each have such a swirl that their respective wall 21 facing tangential component 22 or 22 'in the direction of the inlet port 2 extends. This overall arrangement of the swirl spray nozzles 4 and 4 ', which in the individual planes can be the same or at least offset in one plane from the neighboring plane, has the effect, on the one hand, that the entire flow in the region 9 has no pronounced total swirl which leads to an un uniform flow in the guide channel 1 could result. While a right-angled guide channel 1 is provided in the embodiment of FIGS. 1 and 2, FIG. 3 shows a variant in which a guide channel 1 'with a circular cross section is provided. It can now be provided that the swirl spray nozzles 4 and 4 'are distributed in half in cross-section with respect to the median plane 23 through the entry spigot 2 so that 23 swirl spray nozzles 4 are provided to the left of the center plane, which have a swirl counterclockwise have and to the right of the central plane 23 the swirl spray nozzles 4 ', which have a swirl in a clockwise direction. In this variant, too, there is a tangential component in the region of the wall 21 ', which is directed along the wall 21 ' towards the inlet connector 2 .

While swirl spray nozzles of conventional design were provided in the embodiments of FIGS . 1, 2 and 3, which, however, have been arranged in a special way, a new type of swirl spray nozzles 40 is provided in the embodiment of FIGS . 4 and 5, as described in detail will be described with reference to FIGS. 6 to 20. These swirl spray nozzles are so-called double jet spray nozzles, in which approximately coaxial, but emerging in opposite directions spray jets are used, each having an opposite swirl. In Fig. 4, for example, an arrangement of double jet spray nozzles is provided in the lower level of area 9 , which once sprays the washing liquid in the sense of arrows 5 in countercurrent to the flow of the gas supplied through the inlet nozzle 2 , but at the same time also in the Flow direction of the gas according to the arrows 24 opposite to the spray jet direction 5 of the first jets. The same applies to the second level of the spray nozzles 40 . The swirl of the spray jets emerging in the direction of arrows 5 and 24 is opposite, so that, for example, the swirl of the spray jets emerging in the direction of arrows 5 of the double jet nozzles 40 in the counterclockwise direction, the swirl ent in the sense of arrows 24 from the same double jet nozzles 40 opposite spray jets, however, runs clockwise. This configuration then means that an arrangement of nozzles next to one another in the individual rows does not have to take place with an opposite twist. Rather, as already indicated, all the spray jets directed downwards, ie counterclockwise to the flowing gas, can be provided with a counter-clockwise or counter-clockwise swirl. The angular momentum exerted by the spray jets on the total flow of the gas is thereby compensated, so that the desired swirl compensation can also be achieved by such use of new double jet spray nozzles.

FIG. 5 shows that, seen in the direction of the section line VV, all the spray nozzles 40 exert a swirl in the counterclockwise direction, while the oppositely directed spray jets - not shown - exert a swirl in the clockwise direction.

FIGS. 6 and 7 show a first embodiment of a sol chen new Doppelstrahlsprühdüse according to the invention, as 1 and 2 in place of the particular arrangement of conventional Drallsprühdüsen FIGS. In an arrangement according to Fig. 4 may be vorgese hen. The new double jet spray nozzles can not only be used for the gas scrubbers shown. They can be provided wherever it makes sense not to apply angular momentum to a flow by spraying or to use it when a swirl compensation appears to be expedient, or when it is advisable or expedient, two swirl spray nozzles of a conventional type with a double swirl spray nozzle to replace according to the invention.

Recognize blank 7, Fig. 6 and that the new double-swirl spray nozzle consists of a nozzle housing 41, numbers in the two Kam are formed 42 and 43, which serve as swirl chambers and are each provided with an outlet opening 44 and 45 respectively. The two chambers 42 and 43 are closed off from one another by a dividing wall 46 , which extends into an inlet 47 , through which the medium to be sprayed, in the exemplary embodiment therefore the washing liquid, enters and is then distributed to the two chambers 42 and 43 . As shown in FIG. 6, the passage opening 48 is formed by a connecting piece 47 in the chambers 42 and 43 as an elongated hole inclined at an angle α of 45 ° to the nozzle axis 49 , which is placed such that its wall above the partition 46 lying area 48 a and the area 48 b lying below it are of the same size. Through the loading area 48 a of the opening 48 , the liquid to be sprayed can now enter the upper chamber 42 and the lower area 48 b into the lower chamber 43 . The design of the inlet nozzle 47 and the arrangement of the opening 48 is chosen so that the entering into the chamber 42 portion of the liquid coming through the nozzle 47 approximately tangential to the wall of the chamber 42 on the right in FIG. 6 and the through the lower portion 48 portion of the flues entering sigkeit approximately tangentially to the in Fig. 6 left wall of Kam is directed mer 43rd This creates a counter-clockwise swirl flow in chamber 42 , but clockwise in chamber 43 . Spray jets with opposite swirl therefore emerge at the outlet openings 44 and 45 of the double jet swirl nozzle thus created. Since the emerging amount and the size of the swirl can be kept the same, the swirl of the individual nozzles 40 is compensated in the direction 49 along the axis 49 in the counterflow washer of FIG. 4, so that the gas flow in the region 9 has no swirl in the total in one direction or another.

As shown in FIGS. 6 and 7 show, both chambers are arranged coaxially with each other 42 and 43. Their openings 44 and 45, however, are - in a manner known per se - offset eccentrically to the central axis 49 of the chambers 42 and 43 .

Figs. 8 to 20 now show variations of pelstrahldralldüsen Dop as they are in Figs. 6 and 7. Figs. 13 to 20 are not equipped with equally large swirl chambers, so that there can be only a partial compensation of the swirl with these nozzles, but - particularly in the vicinity of the wall of the guide channel 1, as previously mentioned - can be beneficial.

FIGS. 8 and 9 show a variant of the nozzle of Fig. 6 and 7, in that the partition wall 46 between the chambers 42 and 43 is provided with a circular opening 50 here, through the center of the central axis 49 of the chambers 42 and 43 is . From the inlet nozzle 47 into the chambers 42 and 43 lead the openings 51 and 52 are similar to the areas 48 a and 48 b of FIG. 6 against each other and to the central axis 49 so ver that the gas flow entering through the nozzle 47 again to the same Share on the chambers 42 and 43 is shared where they get an opposite twist. The opening 50 is used in this case so that the upper nozzle 42 , when the nozzle is not in operation, can run empty through the lower chamber 43 , so that any solids accumulated in the nozzle can thereby be flushed out.

As previously stated, the rotating fluid in a swirl nozzle forms a fluid vortex (see also Fig. 12) 53 and 54 , each of which, when emerging from the openings 44 and 45, results in a fluid film in the form of a hollow cone, which in drops atomized. Inside the liquid vortex there is an air core 55 , in each of the two vortexes 53 and 54 . The opening 50 - or the opening 60 in FIG. 12 - is therefore dimensioned in such a way that the fluid vortices 53 and 54 do not touch, but only the air cores 55 have a connection. This also applies to the opening 56 in FIG. 11. To ensure this, as FIG. 12 also shows, a perforated disk 57 can be introduced into the partition between the vertebrae 53 and 54 , the bore 60 of which is dimensioned accordingly. Here, however, it must also be ensured that the perforated disk 57 has no larger diameter than at least one of the two outlet openings 44 or 45 to ensure the installation.

FIGS. 10 and 11 show an embodiment of a Dop pelstrahldüse that operates on the same principle as the nozzles of FIGS. 6 to 9. Here, however, the nozzle body 58 as seen ver in its center with a constriction 59, which in the middle forms the opening 56 , which in turn can form the connection for the air cores which arise in the chambers 42 'and 43 '. The inlet connection 47 'is in this case divided from a short inlet section 61 into two sub-channels 61 a and 61 b, which, however, are directed in the same way as the tangent to the associated chamber walls in order to generate the swirl. Fig. 12 shows egg ne embodiment of FIGS. 10 and 11, but with the perforated disc 57 and additionally employed with the schematically drawn liquid vertebrae 53 and 54 and the hollow cone beams occurring.

FIGS. 13 and 14, like FIGS. 15 to 20, now show a nozzle body 65 in which chambers 64 and 63 of unequal size are formed. In this case, the inlet connection 66 leads without obliquely extending arms, as in the embodiments of FIGS. 6 to 12, into an intermediate region 67 between the chambers 63 and 64 , from which the jets emerging on both sides through the openings 68 and 69 pass through Twist inserts 70 and 71 are formed, which are assigned to the chambers 63 and 64 , respectively. The swirl inserts 70 and 71 are designed so that they cause an opposite swirl. Since the chamber 64 and the outlet opening 69 are smaller, only a partial compensation of the swirl can be achieved with the swirl nozzle according to FIGS . 13 and 14, as with those according to FIGS. 15 to 20.

FIGS. 15 to 17 represent a variant of the nozzle according to FIGS. 13 and 14 in that the intermediate region 67 , which is still without fittings in FIG. 14, is divided by a partition 72 , which has conical elevations 73 in Direction of the axis 74 of the chambers 63 and 64 is provided.

These surveys 73 serve to stabilize the liquid vortex in the chambers 63 and 64 .

Such a stabilization can also be achieved according to FIGS. 18 to 20 by elevations 75 , which are arranged on the partition wall 72 and run towards the chambers 63 'and 64 ' on both sides. Swirl inserts can be omitted in this case if the liquid supply in an inlet connection 66 'by the arrangement of corresponding inlet openings and guides 80 and 81 each again similarly as in the embodiments of FIGS . 6 to 12 tangentially to opposite walls, such as that is indicated by the arrows 82 and 83 .

Claims (16)

1. Cleaning device for separating gaseous or particulate constituents from gas streams with a plurality of swirl spray nozzles ( 4 , 40 ) for introducing and distributing egg washing liquid in the gas stream, characterized in that swirl spray nozzles ( 4 , 40 ) with, based on the main streams direction ( 3 , 11 ) of the gas flow, different swirl directions ( 19 , 20 ) are provided to compensate for a swirl in the main flow. 2. Cleaning device according to claim 1 with in a row ( 18 ) side by side swirl spray nozzles, characterized in that adjacent swirl spray nozzles ( 4 , 4 ') in each row ( 18 ) have opposite swirl directions ( 19 , 20 ). 3. Cleaning device according to claim 2 with a Füh approximately channel ( 1 ) for the gas stream, which at a distance in front of the swirl spray nozzles ( 4 , 40 ) has a transversely merging entry port ( 2 ) for the gas stream, characterized in that the rows ( 18 ) run transversely to the direction of entry ( 3 ) of the gas flow in the guide channel. 4. Cleaning device according to claim 3 with a symmetrical to a through the inlet port ( 2 ) extending central plane ( 23 ) constructed guide channel, characterized in that the swirl spray nozzles ( 4 ), which are to the left of the center plane ( 23 ), a swirl counter to the swirl of the swirl spray nozzles ( 4 '') lying in mirror image to them to the right of the median plane. 5. Cleaning device according to claim 4, characterized in that the tangential component ( 22 '), the adjacent to the parallel to the central plane ( 23 ) running walls ( 21 , 21 ') of the guide channel ( 1 , 1 ') arranged swirl spray nozzles to the side of the guide channel, which is provided with an inlet connection ( 2 ). 6. Swirl spray nozzle, especially for a cleaning unit Direction according to claim 1, characterized in that it as Double swirl spray nozzle with two coaxial, but opposite escaping spray jets with opposite swirl forms is. 7. swirl spray nozzle according to claim 6, characterized in that it has two coaxially arranged, with its outlet openings gene ( 44 , 45 ) pointing in opposite directions swirl chambers ( 42 , 43 , 63 , 64 ). 8. Swirl spray nozzle according to claim 7, characterized in that the swirl chambers ( 42 , 43 , 63 , 64 ) have a common, each Weil in the outlet openings ( 44 , 45 ) facing away from the inflow opening ( 47 , 47 ', 66 ) , which opens into each chamber with an arm ( 48 a, 48 b or 61 a, 61 b) which is oriented tangentially to the associated chamber wall, however, from the center plane of the inflow opening ( 47 ) to the opposite side. 9. Swirl spray nozzle according to claim 8, characterized in that both swirl chambers ( 42 , 43 , 63 , 64 ) are parts of hollow-cone or full-cone spray nozzles. 10. Swirl spray nozzle according to claim 9, characterized in that the bottoms of the swirl chambers are formed by a common partition wall ( 46 , 72 ). 11. Swirl spray nozzle according to claim 10, characterized in that the nozzle is designed as a hollow cone spray nozzle and the partition ( 46 ) in the nozzle axis ( 49 ) or in the axis of the outlet openings ( 44 , 45 ) with an opening ( 50 , 56 , 60 ) is provided. 12. Swirl spray nozzle according to claim 11, characterized in that the opening ( 56 ) is formed by a central constriction ( 59 ) in the region of the inlet opening ( 47 ') of the swirl chambers ( 42 ', 43 '). 13. swirl spray nozzle according to claim 11, characterized in that for further decoupling of the swirl chambers ( 42 ', 43 ') a perforated disc ( 57 ) is inserted into the opening, the diameter of which is not greater than one of the outlet openings ( 44 , 45 ) 14. Swirl spray nozzle according to claim 10, characterized in that the partition ( 72 ) is provided on both sides with elevations ( 73 , 75 ) and depressions for the production of a liquid fluid lever. 15. Swirl spray nozzle according to claim 8, characterized in that in each swirl chamber ( 63 , 64 ) a swirl insert ( 70 , 71 ) is provided, which forces the entering liquid egg nen swirl, which is opposite to the swirl generated by the other swirl insert. 16. Swirl spray nozzle according to claim 15, characterized in that between the swirl inserts ( 70 , 71 ) a partition ( 72 ) is provided which has elevations ( 73 ) for stabilizing the flow.