FI121409B - Method and equipment for compressing the water in a process gas and washing the gas - Google Patents

Abstract

The invention relates to a method and apparatus for condensing the abundant water vapour in process exhaust gases and for scrubbing the gas of impurities in gas, solid and liquid droplet form. According to the method, scrubbing liquid is fed into the gas flow in order to cool the gas i.e. to condense the water vapour, in at least two different steps, the later of which occurs as the velocity of the gas is accelerated. After this the gas is subjected to wet scrubbing by routing the gas thus reduced in volume into a scrubbing chamber containing scrubbing liquid, from where the purified gas is discharged after droplet separation into the outside air. The scrubbing liquid is circulated so that some of the liquid is routed from the scrubbing chamber to cooling and solids separation, after which it is recirculated via high-pressure pumps to be fed to the cooling and scrubbing of the gas flow.

Description

METHOD AND APPARATUS FOR COMPRESSING WATER IN THE PROCESS GAS AND FOR WASHING THE GAS

FIELD OF THE INVENTION

The invention relates to a method and apparatus for condensing abundant water vapor in the process exhaust gas and for scrubbing the gas from impurities in the form of gas, solid and liquid droplets. According to the method, the washing stream is supplied to the gas stream for cooling the gas, i.e. for condensing the water vapor, in at least two different stages, the latter occurring as the gas velocity is increased. Subsequently, a wet scrubbing of the gas is performed by introducing a reduced volume gas stream into the scrubbing chamber containing the scrubbing liquid, from which the purified gas is removed to the open air after droplet separation. The washer fluid is circulated so that part of the fluid is led from the washer chamber to cooling and is solids separation, then circulated through high pressure pumps to be fed to the gas stream for cooling and washing.

BACKGROUND OF THE INVENTION

Multi-stage washing of hot gas (800-1200 ° C) has previously been described, for example, in U.S. Patent No. 6,149,715. The method and apparatus include the possible pre-wetting of the gas, the actual cooling of the gas in the ejector venturi with a high pressure water jet, a second washing step in which the gas is made to collide with the liquid surface of the underwater vent. The third washing stage uses the actual 25 venturi scrubbers, where the gas velocity is raised to a high speed (40-150 m / s) and the amount of washing water used is smaller than in the first venturi. There is also a water tank underneath the second venturi scrubber, where gas cleaning continues. From the water tank, the gas is led to a horizontal ejector, where the water jet velocity is higher than the gas velocity and thence to 30 droplet separation. For example, the gas may be predominantly carbon monoxide, whereby the purified gas is supplied for combustion.

U.S. Patent No. 4,643,742 discloses a process for cooling and scrubbing gases from the metallurgical industry from dust and water vapor. Gas temperature is high (above 100 ° C) and dust is high. The purpose is to perform cooling and washing using as little water as possible and low water and gas velocities, e.g. to save energy. In the first step, the gas is conducted from top to bottom in the gas inlet pipe. Water is injected into the tube through the nozzles, which evaporates and saturates the gas with water vapor at the desired temperature, which is normally below 100 ° C. After the first water-lo nozzles, the gas inlet is shaped as a venturi. Water droplets are injected radially into the venturi throat relative to the venturi cross-section through one or more nozzles, e.g. to maximize the speed difference between gas and water. The problem is the wear and sedimentation (growth) caused by the solid particles in the venturi throat, which is prevented by supplying water to the inner walls of the venturi inlet tangentially. When the temperature of the water to be sprayed is lower than that of the gas, the gas is cooled at the same time.

There is a water tank underneath the venturi outlet, and as the gas laden with water droplets and dust particles flows from above the water surface to another 20 washing steps, a large proportion of the water droplets and dust will fall into the water tank as the gas flow direction changes. In the second washing step, the direction of the gas is reversed to flow from the bottom up through the bed filled with molds, into which water is sprayed through the nozzles. Also below the second washing step is a water tank, where the water drops fall. The water tanks are interconnected and the second water tank is always higher than the first. In the middle of the second washing step is a purified gas outlet pipe with droplet separators. The water sprayed through the nozzles is recycled from the water tanks of the system. In order to achieve sufficient cooling, if necessary, the temperature of the water to be supplied to the second washing stage, in particular, is controlled by supplying the nozzles with cold water outside the circulation.

In the method according to U.S. Patent No. 4,643,742, the cooling water supplied above the venturi and the washing water supplied to the venturi are radially or transversely (at an angle of 90 degrees) against the gas stream. In practice, at higher water speeds this causes a so-called gas-5 flow. pressure lock, whereby the gas flow stops briefly and then discharges intermittently. The pressure lock phenomenon causes vibrations in the equipment which are harmful to the equipment. Another disadvantage of the method is that the gas pipe is only flushed with tangential water jets just above the venturi. In the case of dusty gases, a film of water should be formed on the inner face of the gas tube at the very top of the tube and not halfway through the tube to prevent the growth of vegetation. In addition, the tangential water supply causes rotation to the gas flow and the idea behind the venturi below breaks. The use of a molded bed is not advantageous in the treatment of high dust gases because the dust easily clogs the 15 molded bed. In addition, the filler bed must be rinsed continuously.

U.S. Patent No. 6,805,734 discloses a wet scrubber for exhaust gas, with a plurality of cascade ducts for scrubbing the outside and a central part of the scrubber formed as a droplet separator for purifying the purified gas 20 into the environment. It is typical of a cascade scrubber that the gas to be purified is introduced into the washing liquid, whereby the separation of solid particles from the gas is most assured. The scrubber is designed to operate under reduced pressure to provide a suitable gas velocity with a blower positioned after the scrubber.

25

PURPOSE OF THE INVENTION

The object of the method and apparatus of the invention is to eliminate the drawbacks of the above methods and to disclose a simple way and apparatus for removing water vapor from gas 30 or other high moisture gas while washing it from liquid droplets and other impurities such as solid particles.

4

SUMMARY OF THE INVENTION

The essential features of the invention will be apparent from the appended claims.

The invention relates to a method for condensing water vapor in the process exhaust gas and for scrubbing the gas from impurities in the form of gas, solid and liquid droplets. The process is characterized in that the gas is led downstream in the feed pipe and cooled by pressurized jets of washing liquid which are inclined downwardly towards the gas stream. The gas is further directed to a venturi scrubber, where the gas is further cooled and washed, preferably in two steps, by means of obliquely downwardly directed washing fluid jets, after which the gas stream is led to flow into a cascade scrubber located underneath the venturi. The cascade scrubber separates most of the gas from the cooled water, as well as the liquid droplets and solid particles in the gas into the washer coolant and purifies the gas through the droplet separator into the open air.

20

It is typical of the process according to the invention that the temperature of the exhaust gas entering for cooling and washing is not more than 100 ° C. The exhaust gas is the exhaust gas of the hydrometallurgical process or the granulation exhaust gas.

According to the method, the gas is cooled in two stages before the venturi. Typically, more than half of the washing liquid is fed to the gas before the venturi.

According to the method, the washing liquid jets are fed to the gas at an angle of 25 to 35 at 30 degrees to the horizontal.

5

In Ventur, the gases are washed and cooled in two steps. In order to achieve a good washing effect, the velocity of the gas is increased by a venturi at least five times the velocity of the gas in the feed pipe.

According to one embodiment of the invention, the washing liquid used is a lye solution. According to another embodiment, the washing liquid used is an acid solution. According to a third embodiment, the washing liquid is a permanganate solution or a mixture of a solution of a lye and a permanganate solution.

According to one embodiment of the invention, the gas feed pipe is flushed by means of a flushing system located at the top of the pipe, the truncated feed pipe being surrounded by a gas-tight water trap into which the flush liquid is supplied; at the point of intersection, the upper edge of the tube is formed as a notch so that the flushing fluid flows uniformly along the inner surface of the tube.

15

The invention also relates to an apparatus for condensing water vapor in the process exhaust gas and for scrubbing the gas from impurities in the form of gas, solid and liquid droplets. The apparatus is characterized in that the apparatus is provided with a feed pipe having at its upper end at least one nozzle assembly for supplying a pressurized wash liquid downwardly to the feed pipe. The feed tube is connected at its lower end to a venturi, which is provided with at least two nozzle groups for obliquely feeding the pressurized wash liquid to the venturi. The vent washer is connected at its lower end to the intermediate pipe and then to the cascade washer, which is surrounded by a wash chamber. The gas outlet pipe is connected at one end to the wash chamber and at the other end to a droplet separator.

According to one embodiment of the invention, the number of nozzle groups connected to the top of the feed pipe is two.

It is typical of the apparatus that the nozzle array connected to the upper part of the feed pipe is formed by symmetrically spaced nozzles 30 to 3-8 connected to a dispenser for supplying the washing liquid.

Preferably, the lower nozzles of the nozzle groups connected to the upper portion of the supply pipe of the apparatus are in phase displacement relative to the upper nozzles.

In the apparatus, the nozzle groups connected to the shrinking cone of the venturi and the throat of the venturi consist of a number of nozzles of 2-6 disposed symmetrically with respect to the venturi cross-section and connected to a dispenser for supplying the washing liquid to. Also, the nozzles of the nozzle array connected to the venturi cone are typically phase displaced relative to the venturi throat nozzles.

Preferably, the nozzles of the nozzle groups connected to the top of the inlet pipe and the venturi are inclined downwardly at an angle of 25 to 350 horizontal.

15

According to one embodiment of the apparatus, the feed pipe is provided with a flushing system located above the nozzle groups, which consists of a truncated feed pipe and a surrounding gas-tight liquid lock, whereby the upper edge of the feed pipe is formed in a notch.

20

LIST OF FIGURES

Fig. 1 is a schematic view of the apparatus according to the invention with a low capacity, Fig. 2A shows a more detailed sectional view of the top of the apparatus, Figs. 2B and 2C are cross-sectional views of AA and BB, Fig. 3A is a sectional view of the venturi Figure 4A is a sectional view of the bottom of the apparatus, Figure 5A is a more detailed sectional view of the bottom of the apparatus 30 in which multiple cascade tubes are disposed, Figure 5B is a cross-sectional view of Figure 5A, and Figure 6 is a schematic view of

7

DETAILED DESCRIPTION OF THE INVENTION

The gas from the hydrometallurgical process involved in the production of metals may contain high amounts, even more than half of its volume, of water vapor. The gas is generally derived from many, if not many, tens of reactors, from which the gas can be combined for treatment by the process and apparatus of the invention. The scrubbing gases consist, for example, of excess air used for leaching in the leaching reactors, nitrogen from the reacted air, and the water vapor they bring with them. The gas may also contain droplets of solution carried from the reactors, for example, with the venting gases. Also, the solid travels with the gas as small particles. The solid may be the starting material of the process, such as concentrate, or the end product, such as sulfur. In addition to the gas of hydrometallurgical processes, the invention also relates to a gas which is rich in moisture and is derived from other treatments. This is the case, for example, of gas from granulation, typically at a temperature of about 100 ° C or less, since the gas supplied with the gas is known to cool the gas.

The purpose of the gas treatment is thus to significantly reduce the amount of gas 20 by removing water vapor therefrom and at the same time to purge the gas of impurities. The gas is washed with a washing liquid which, depending on the impurities in the gas, is either alkaline, acidic or the liquid can be, for example, a solution of permanganate. The alkaline wash liquid is used to wash the acid components, the acid is washed to remove metal residues, and when the gas contains, for example, arsine, it can be removed with a permanganate-containing wash. The wash solution may also be a mixture of a basic and a permanganate solution. The permanganate is preferably potassium permanganate.

Figure 1 shows the equipment used in the washing process. The temperature of the gas entering the scrubber 30 is often in the range of 90-100 ° C, but the apparatus is also suitable for handling autoclave gases. The gas is conducted in a substantially vertically positioned feed pipe 1 to flow downwards, whereby it is preconditioned in a first step. In the pre-cooling step, more than half, and typically 3A, of the amount of liquid used for cooling is injected through nozzle groups 2 and 3 into the gas to be cooled. Preferably, the number of nozzle groups is two, but still at least one. The washing liquid used for cooling is about room temperature. The amount of washing liquid used for cooling and washing is adjusted so that the temperature of the gas leaving the plant to the open air is kept as low as possible, so that the amount of water vapor remaining therein is also small. Preferably, the temperature is 40 ° C or less. The gas to be treated has a velocity in the range of 10-15 m / s, and the pressure of the wash liquid sprayed therewith is set at 2-15 bar.

The pre-cooled gas is then led to a second cooling step, which takes place in a venturi scrubber 4, in which the remainder of the washing liquid 4 used for cooling is sprayed through nozzle groups 5 and 6. The upper nozzle assembly 5 is positioned at the tapering cone 7 of the venturi 4 and the lower nozzle assembly 6 at the venturi 8. The pressure of the washer fluid is of the same order as in the first cooling step. The venturi and the nozzle groups located therein further cool the gas and also perform a pre-scrubbing of the gas. It is advantageous to dimension the venturi so that the velocity of the gas in the venturi increases at least five times that of the gas in the inlet pipe.

After the vent scrubber 4, the gas is fed through the intermediate pipe 9 to the actual scrubbing stage 25, whereby the gas is fed through the cascade scrubber 10 to the chamber containing the scrubbing liquid, but generally the cascade scrubber has several is fed into the wash chamber. The number of cascade tubes depends on the amount of gas, capacity, so that as the capacity increases, the number of cascade tubes is increased. The principle is that the outlet of the nozzle is a maximum of 300 mm, and when this is not sufficient for the amount of gas to be treated, the number of pipes 9 is increased. The cascade duct generally consists of an inner nozzle 12 and an outer gas reversing tube 13 and a plate collision plate 14 attached to the inner tube.

In the case of the invention, the cascade duct is dimensioned so that the velocity of the gas and the washing liquid supplied with it are in the order of 30 -50% of the velocity of the gas in the venturi 8. The lower part of the washing chamber or liquid part 15 is dimensioned so that the liquid temperature remains almost constant. . The upper part 16 of the chamber ίο, i.e. the gas space, is formed wide enough to provide a slow gas exit rate, for example less than 1 m / s. The gas space is also set high enough to avoid splashing the washing liquid as the gas rises from the wash bath. The cascade scrubber is particularly effective in removing dust from the gas.

15

The pure gas, from which most of the liquids have been removed, is led down the outlet pipe 17 to the droplet separator 18, where the droplets are separated, for example, by known technology. After the droplet separation, the gas is removed to the environment. In droplet separation, the droplets of liquid 20 separated from the gas are recycled to the liquid circuit (not shown in detail).

From the washing chamber 11, the washing liquid is recycled, whereupon it is completely or partially passed for cleaning. The washer fluid is cooled and fed through pumps to the nozzle groups described above for gas cooling.

25

Figure 2A shows in more detail the gas supply pipe 1 and the pre-cooling nozzle groups 2 and 3 mounted therein, to which the washing liquid is fed from a dispenser, for example the annular manifolds 19 and 20 surrounding the supply pipe. larger than the case, it is clear that the number of nozzles is greater. The nozzles are directed downwards, preferably at an angle of 25 ° to 35 ° to the horizontal. When the nozzles 10 are slightly oriented in the direction of gas flow, the liquid jets do not form a "pressure lock" to resist gas flow, as occurs in prior art equipment. As shown in the cross-section of Figure 2B, the nozzles are at an angle of 90 ° to each other. In figure 5, the number of nozzles is four, but it can also be any other between 3 and 8, with an angle of 120 to 45 ° to each other. In all cases, the nozzles are disposed symmetrically with respect to the cross section of the feed pipe. The liquid jets from the nozzles are aligned in the center of the feed pipe, i.e. the feed is not tangential.

10

The lower pre-cooling nozzle assembly 3 is also formed of four nozzles 22 which are also directed downwardly, preferably at an angle of 25 ° to 35 ° and, as seen in cross section 2C, are also at an angle of 90 ° to each other. Comparison of the cross-sections 2B and 2C also shows that the nozzles 22 of the lower nozzle group 15 are not in the same position as the nozzles 21 of the upper nozzle group, but are positioned between the upper nozzles, i.e. in this case a 45 ° phase shift to the upper nozzles. The same applies to the nozzles of the lower nozzle group, that is, the number of nozzles may vary, as in the upper group, so that the number of nozzles in each group is the same.

The cooling of the gas continues in the venturi washer 4 to which the gas supply pipe 1 is connected. In Fig. 3A, the top of the venturi has a downwardly tapering cone 7 25 before the actual venturi throat 8, where the venturi has a minimum cross-section. Also, the second stage cooling of the washer fluid with the washing fluid is preferably carried out in two portions of the annular manifolds 23 and 24 surrounding the venturi, whereby the first part of the washer fluid is supplied to the tapered cone 7 30 over the venturi throat. In the case of Fig. 3B, the number of nozzles is 3, but it can of course be different, for example between 2 and 6. In these 11 cases, too, the nozzles are evenly distributed over the cross-section of the ventricular cone. The nozzles are directed downwards, preferably at an angle of 25 ° to 35 ° to the horizontal. The nozzles are also disposed symmetrically with respect to the venturi cross-section.

5

The lower nozzle assembly 6 of the second cooling step, which is also the first gas washing step, is located in the venturi throat 8. The lower nozzle assembly 6 also consists of a plurality of nozzles 26, preferably in the range of 2 to 6. In Fig. 3C, the number of nozzles is three, the nozzles are here, as in all previous cases, pointing downwards, preferably at an angle of 25 ° to 35 °, and as shown in 3C, they are also at an angle of 120 ° to each other. Comparison of the cross-sections 3B and 3C also shows that the lower nozzle group nozzles 26 are not in the same position as the upper nozzle group nozzles 25 in the gas inlet pipe, but are disposed between the upper nozzles, i.e. they are phase displaced with respect to the ventricular cone nozzles.

Normally, a venturi of the type described above operates at high gas velocities, whereby the gas causes suction in the wash water holes 20 at the throttle and degrades the water into small droplets, which eliminates the need for high water pressure. However, the method and apparatus of the present invention utilize a fairly high pressure on the washer fluid to form a jet of liquid containing a small amount of liquid mist, which has the power to penetrate the center of the gas flow and beyond. In such a case, the liquid jets 25 must not be completely transverse to the gas stream, as this will produce the so-called oscillating so-called. pressure lock.

The venturi gradually expands after the throat as a conical tube 27 below the throat such that the lower end of the tube connected to the nozzle tube 30 12 of the cascade scrubber by means of the intermediate tube 9 is 50-100% in diameter instead of the inlet tube. Figure 4 shows in more detail the second gas scrubbing step consisting of a cascade scrubber 10 and a surrounding washing chamber 11.

12

The gas intermediate tube 9 is connected to the inner nozzle tube 12, which is also fitted with a drop collision plate 14. The nozzle tube is tapered and at its lower end, below the collision plate, is connected to the outer tube 13 surrounding the nozzle tube. the lower end of the nozzle tube. The gas and the accompanying washing liquid are discharged into the lower chamber 15.

The gas discharged into the scrubbing chamber and the water separated from the gas, as well as the liquid droplets and solids in the gas, remain in the scrubbing chamber and the purified gas flows into the upper chamber or gas space 16. The gas is discharged through the outlet 17 to the droplet separator 18. The pressure regulation of the hating gas through the cooling and washing system is performed by an is blower located below the droplet separator (not shown in detail), whereby the system operates under reduced pressure.

Figures 5A and 5B show an example of the lower part of the apparatus according to the invention, in which the number of cascade nozzles is increased as the capacity increases.

20

The method and apparatus according to the invention consist of several stages, in which the cooling of the gas is effected mainly by jets of scrubbing liquid directed to the gas and washing of the gas in both a venturi scrubber and a cascade scrubber, which complement each other for a good final result. It will be appreciated that when washing and washing liquids, which may be basic or acidic, are used for cooling and washing, cooling and washing are not only physical phenomena, but the washing liquid is so selected that they also undergo the desired chemical reactions all the time.

30

Figure 6 shows a preferred way of flushing the inner surface of the gas supply pipe 1, thereby preventing the solid particles from sticking to the surface of the pipe 13. The inner surface flushing system 29 is positioned above the top cooling nozzle assembly (not shown). The gas pipe is cut off and the cut-off point is surrounded by a water and gas tight water trap 30 to which the flushing fluid 31 is fed. If the amount of dust contained in the gas is small, the washing liquid in circulation may be used as the flushing liquid, but if the amount of dust is large, clean water is preferred. At the cut-off point, the upper edge 32 of the tube is formed as a notch, so-called. serrated, from which the flushing fluid flows downwardly along the pipe edges.

10 EXAMPLES

Copper concentrate (Cu 28.6%, Fe 30.1%, Zn 2.4% and Pb 0.35%) and air were fed to the stirred chloride reactor. The reactor was evacuated at 95 ° C.

The carbon monoxide gas was cooled and washed in a condensing venturi scrubber according to the invention with brine. The pH of the wash solution was adjusted to 6-8 with the brine solution and the temperature of the effluent gas through the solution circulation. The washing solution circulated through the heat exchanger. Energy was recovered from the heat exchanger. Upon cooling, 200 kg / h of water condensed.

20

Exhaust gas from washing:

Flow rate 914m3 / h

Temperature 40 ° C

Humidity 7.2% 25

the concentration of impurities:

Cl 0.26 mg / m3 Cu <0.02 mg / m3 Zn <0.02 mg / m3 30 Pb <0.02 mg / m3 14

The impurity contents of the exhaust gas are so low that the gas can be freely discharged into the open air.

Claims (21)

A process for condensing the water vapor in the process exhaust gas and for scrubbing the gas from impurities in the form of gas, solid and liquid droplets, characterized in that the gas is led downwardly in the feed pipe and cooled by pressurized washer fluid jets wherein the gas is further cooled and preferably washed in two steps by means of obliquely downwardly directed washer fluid jets, after which the gas stream is directed to a cascade scrubber located at least one cascade duct located underneath the venturi to purge the gas is conducted through the droplet separator to the open air. 2. Förfarande enligt patent krav 1, kännetecknat därav, att den till 5 avkylning och tvätt inkommande avloppsgasens temperature below 100 ° C. Process according to Claim 1, characterized in that the temperature of the exhaust gas entering the cooling and washing process is 20 to 100 ° C. 3. Förfarande enligt patent krav 1 och 2, kännetecknat därav, att avloppsgasen and en avloppsgas fran en hydrometallurgical process. 10 Process according to Claims 1 and 2, characterized in that the exhaust gas is an exhaust gas of a hydrometallurgical process. 4. Förfarande enligt patent krav 1 and 2, kännetecknat därav, att avloppsgasen är en avloppsgas fran granulering. Method according to Claims 1 and 2, characterized in that the exhaust gas is a granulation exhaust gas. Method according to Claim 1, characterized in that the gas is cooled in two stages before the venturi. 30 5. Förfarande enligt patentkrav 1, kännetecknat därav, att gasen avkyls 15. tvä steg fore venturin. 6. Förfarande enligt patentkrav 1, kännetecknat därav, att tvättvätskestralarna matas in i gasen i en tipsel 25 - 35 grader i förhällande till horisontalplanet. 20 6. A method according to claim 1, characterized in that the washing liquid jets are supplied to the gas at an angle of 25 to 35 degrees to the horizontal. 7. Förfarande enligt patentkrav 1, kännetecknat därav, att over hälften av tvättvätskan matas in i gasen före venturin. The method according to claim 1, characterized in that more than half of the washing liquid is supplied to the gas before the venturi. 8. Förfarande enligt patentkrav 1, kännetecknat därav, att i venturin 25 tvättas och avkyls gaserna i tvä steg. 1 2 3 4 Förfarande enligt patentkrav 1, kännetecknat därav, att för 2 ästadkommande av tvättverkan höjs gasens hastighet med hjälp av 3 venturin ätminstone femfaldigt i jämförelse med gasens hastighet i 4 30 matarröret. Process according to Claim 1, characterized in that the gases in the venturi are washed and cooled in two steps. 10 Method according to Claim 1, characterized in that the velocity of the gas is increased by at least five times the velocity of the gas in the feed pipe in order to achieve the washing effect. 15 10. Förfarande enligt patentkrav 1, kännetecknat därav, att tvättvätskan som används är en lutlösning. 10. A method according to claim 1, characterized in that the washing liquid used is an alkaline solution. 11. Förfarande enligt patentkrav 1, kännetecknat därav, att tvättvätskan 5 som används är en syralösning. The method of claim 1, wherein the washing liquid used is an acid solution. 12. Förfarande enligt patentkrav 1, kännetecknat därav, att tvättvätskan som används ei permanganatlösning and eller en blandning av lutlösning och permanganatlösning. 10 Process according to Claim 1, characterized in that the washing liquid used is a permanganate solution or a mixture of an alkaline solution and a permanganate solution. 25 13. Förfarande enligt patentkrav 1, kännetecknat därav, att gasens matarrör skukors med hjälp av et vid rörets ända placerat skõlsystem, colors det brutna matarröret omges med et gastätt vattenläs, account flashes skukorvätskan tillförs; vid brytningspunkten är rörets 15 belts utformat med urtag, för att fa skukorvätskan att rämnt längs med rörets inre yta. 1 Utrustning för komprimering av i avloppsgas förekommande vattenänga och för tvättning av gasen frän orenligheter i form av gas, 20 fast ämne och vätskedroppar, telnetecknad därav, att i utrustningen ingär et matarrör (1), account varsenvre del munstycken (2,3) för matning av en tvättvätska under tryck snett nedät in i matarröret; a matarröret om vid sin nedre del förenad med en venturitvättare (4), vilken är försedd med atminstone tva 25 grupper av munstycken (5,6) för matning av en tvättvätska under tryck snett nedät in i venturin; venturitvättaren om vid sin nedre del förenad med ett mellanrör (9) and omega av en tvättkammare (11); gasens avloppsrör (17) vid vid en än f 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 (30). A method according to claim 1, characterized in that the gas supply pipe is flushed by means of a flushing system located at the top of the pipe, the truncated supply pipe being surrounded by a gas-tight water trap into which the flushing liquid is supplied; at the cut-off point 30, the upper edge of the tube is formed as a notch so that the flushing fluid flows uniformly along the inner surface of the tube. Apparatus for condensing water vapor in the process exhaust gas and for scrubbing the gas from impurities in the form of gas, solid and liquid droplets, characterized in that the apparatus comprises a feed pipe (1) having at least one nozzle array (2,3) for supplying pressurized wash liquid ; the feed tube being connected at its lower end to a venturi (4) provided with at least two nozzle sets (5,6) for obliquely supplying pressurized wash liquid to the venturi; the venturi washer is connected at its lower end to the intermediate tube (9) and further to the cascade washer (10) surrounded by the washing chamber (11); the gas outlet pipe (17) is connected at one end to the washing chamber and at the other end to the droplet separator (18). 15. Utrustning enligt patent krav 14, ankle dnavar, att antalet till matarrörets övre del anslutna grupper av munstycken (2,3). Apparatus according to claim 14, characterized in that the number of nozzle groups (2,3) connected to the upper part of the feed pipe 15 is two. 16. Utrustning enligt patentkrav 14, kännetecknad därav, att den till 5 matarrörets övre del anslutna Gruppen av munstycken (2,3) utgörs av symmetriskt i förhallande till matarrörets tvärsnittsyta placerade munstycken (21,22), lively antalka 3-8 vil är Förenade med en distributionsanordning (19, 20) som matar tvättvätskan. ίο 17. Utrustning enligt patentkrav 16, a lumping device, att de nedre munstyckena (22) and a matarrörets övre del anslutna grupperna av munstycken (2,3) and a förskjutna i förhallande till de övre munstyckena (21). Apparatus according to Claim 14, characterized in that the nozzle array (2,3) connected to the upper part of the supply pipe consists of 20 nozzles (21, 22) disposed symmetrically with respect to the cross-section of the supply pipe and connected to the dispenser (19, 20). Apparatus according to claim 16, characterized in that the lower nozzles (22) of the nozzle groups (2,3) connected to the upper part of the feed pipe are in phase displacement with respect to the upper nozzles (21). 18. Utrustning enligt patent krav 14, kännetecknad därav, att de till venturins förminskande kon (7) och till venturins Hals (8) anslutna grupperna av munstycken (5,6) bestär av symmetriskt i förhallande till venturins tvärsnittsyta placerade munstycken (25,26) , lively antal 2-6 and lively Förenade med distributionsanordningen (23, 24) som 20 matar tvättvätskan. Apparatus according to Claim 14, characterized in that the nozzle groups (5,6) connected to the shrinking cone (7) of the venturi and the throat (8) of the venturi consist of nozzles (25,26) disposed symmetrically with respect to the transverse surface of the venturi. -6 and connected to a washer fluid dispenser (23, 24). 19. Utrustning enligt patent krav 18, stumps därav, att munstyckena (25) i den till venturins kon anslutna Gruppen av munstycken (5) förskjutna i förhällande till munstyckena (26) vid 25 venturins Hals. Apparatus according to claim 18, characterized in that the nozzles (25) of the nozzle array (5) connected to the venturi cone are in a phase displacement relative to the nozzles (26) of the venturi throat. 5 20. Utrustning enligt patent krav 14, kännetecknad därav, att munstyckena (21,22,25,26) i de till matarrörets övre del och till venturin anslutna grupperna av munstycken and in the case of violations 25 - 35 0 i förhällande till the horizontal plane. Apparatus according to Claim 14, characterized in that the nozzles (21,22,25,26) of the nozzle groups connected to the upper part of the inlet pipe and the venturi are inclined downwards at an angle of 25 to 35 ° to the horizontal. 10 Apparatus according to Claim 14, characterized in that a flushing system (29) is formed in the supply pipe (1) above the nozzle groups (2,3), which consists of a truncated feed pipe and a gas-tight liquid lock (30) surrounding it. the upper edge (32) is formed as a notch. 20 1. Förfarande för compimering av i avloppsgas förekommande vattenanga och för tvättning av gasen frän orenligheter i form av gas, fast ämne och vätskedroppar, aching därav, att gasen leds att strömma i i matarr och den avkyls hv breezy snett nedett mot gasflödet, 25 varefter gasen leds in i en venturitvättare, i lurking gasen avkyls och tvättas vidare företrädesvis i tvä steg med hjälp av snett ned riktade tvättvätskesträlar, varefter gasflödet leds attkate som omfattar ätminstone et cascadrör och med vars hjälp hobby part av 30 det ur gasen avkylda vattnet samt valskedropparna och de fasta ämnespartiklarna som förekom i gasen avskiljs in i tvättkammarens sowing och den rengjorda gasen leds via en. 21. Utrustning enligt patentkrav 14, anatomical device, att i matarröret (1) ovanför grupperna av munstycken (2,3), and a skeletal system (29), a blinking uterus and an omgivande gastätt vartskelas (30), colors matarrörets Övre cant (32) 5 utformad med urtag i brytningspunkten.