CN219128746U - Exhaust gas treatment system - Google Patents

Abstract

The utility model relates to the technical field of environmental protection, and discloses an exhaust gas treatment system, which comprises: the device comprises a spray tower, an alkali liquor supply device, a cleaning liquid supply device, a gas separation device and a driving device; a first treatment chamber and a second treatment chamber in the spray tower; the lye supply device comprises: the alkali liquor water tank, the first liquid outlet end and the first liquid return end are provided with a spray header; the cleaning liquid supply device includes: the second liquid outlet end can spray cleaning liquid into the second processing chamber, and a water curtain is formed between the second liquid outlet end and the second liquid return end; the gas separation device comprises a second gas inlet, a second gas outlet and a centrifugal machine; the driving device is used for driving the waste gas to sequentially flow through the first processing chamber, the second processing chamber, the first exhaust port, the second air inlet and the centrifugal machine from the first air inlet and then to be exhausted from the second exhaust port. The utility model can remove dust particles, peculiar smell, toxic and harmful gases and the like in the waste gas, and has simple structure and low cost.

Description

Exhaust gas treatment system

Technical Field

The utility model relates to the technical field of environmental protection, in particular to an exhaust gas treatment system.

Background

The waste gas treatment is mainly aimed at treating waste gas produced in industrial places, such as dust particles, flue gas, smoke dust, peculiar smell gas and toxic and harmful gas. At present, common waste gas treatment includes factory smoke waste gas treatment, workshop dust waste gas treatment, organic waste gas treatment, waste gas odor treatment, acid-base waste gas treatment, chemical waste gas treatment and the like. Therefore, an exhaust gas treatment system with complete functions and good purification effect is needed, the treatment device is single nowadays, the purification of a plurality of exhaust gases usually cannot reach the expected effect or cannot reach the standard at all, the environment protection is not facilitated, and particularly when high-temperature exhaust gases are treated, the problems of short service life, poor purification effect and the like of the conventional treatment equipment can occur under long-time use.

Disclosure of Invention

The purpose of the utility model is that: an exhaust gas treatment system capable of effectively removing dust particles, smoke dust and peculiar smell in exhaust gas is designed.

In order to achieve the above object, the present utility model provides an exhaust gas treatment system comprising: the device comprises a spray tower, an alkali liquor supply device, a cleaning liquid supply device, a gas separation device and a driving device;

a first treatment chamber and a second treatment chamber which are sequentially communicated are arranged in the spray tower, and the spray tower is provided with a first air inlet, a first air outlet, an alkali liquor inlet, an alkali liquor return inlet, a cleaning liquid inlet and a cleaning liquid return inlet; the first air inlet, the alkali liquor inlet and the alkali liquor return inlet are respectively communicated to the first treatment chamber; the first exhaust port, the cleaning liquid inlet and the cleaning liquid return port are respectively communicated to the second treatment chamber;

the lye supply device comprises: the device comprises an alkali liquor water tank, a first liquid outlet end and a first liquid return end, wherein the alkali liquor water tank is arranged outside the spray tower, the first liquid outlet end is arranged in the first processing chamber and is connected with the alkali liquor water tank through the alkali liquor inlet, the first liquid outlet end is provided with a spray head, and the first liquid return end is arranged in the first processing chamber and is connected with the alkali liquor water tank through the alkali liquor liquid return opening;

the cleaning liquid supply device includes: the second liquid outlet end is positioned in the second processing chamber and is connected with the cleaning liquid tank through the cleaning liquid inlet, the second liquid return end is positioned in the second processing chamber and is connected with the cleaning liquid tank through the cleaning liquid return opening, the second liquid outlet end can spray cleaning liquid into the second processing chamber, and a water curtain is formed between the second liquid outlet end and the second liquid return end;

the gas separation device comprises a second gas inlet, a second gas outlet and a centrifugal machine for water-vapor separation, wherein the centrifugal machine is arranged between the second gas inlet and the second gas outlet, and the second gas inlet is communicated with the first gas outlet;

the driving device is used for driving the waste gas to flow through the first processing chamber, the second processing chamber, the first exhaust port, the second air inlet and the centrifugal machine in sequence from the first air inlet and then to be exhausted from the second exhaust port.

Preferably, the second processing chamber and the first processing chamber are arranged up and down, and the second processing chamber is located above the first processing chamber.

Preferably, the cleaning solution supply device further comprises a drainage plate for forming the cleaning solution into the water curtain, and the drainage plate is arranged in the second processing chamber.

Preferably, the cleaning solution supply device comprises a plurality of drainage plates, and each drainage plate is arranged in a staggered way at an upper-lower interval and is used for enabling the cleaning solution to flow to form a plurality of water curtains for the exhaust gas to pass through.

Preferably, a water collecting tank is arranged at the second liquid return end.

Preferably, the spray header comprises a rotary spray pipe which is rotatable about the axis of the spray tower.

Preferably, the apparatus further comprises a first corrugated filler, wherein the first corrugated filler is arranged in the first processing chamber and positioned in the spraying range of the rotary spraying pipe.

Preferably, the gas separator further comprises a second corrugated packing, wherein the second corrugated packing is installed in the gas separator, and the second corrugated packing is positioned between the second gas inlet and the centrifuge.

Preferably, the filter further comprises a multistage filter box, filter cotton for removing water mist and activated carbon for adsorbing organic molecules, wherein a first filter chamber and a second filter chamber which are sequentially communicated are arranged in the multistage filter box, the filter cotton is arranged in the first filter chamber, the activated carbon is arranged in the second filter chamber, a third air inlet and a third air outlet are formed in the multistage filter box, the third air inlet is communicated with the second air outlet and the first filter chamber, and the third air outlet is communicated with the second filter chamber.

Preferably, the driving device is a negative pressure fan, and the negative pressure fan is installed at the third exhaust port.

Compared with the prior art, the exhaust gas treatment system has the beneficial effects that:

the waste gas treatment system of the utility model removes acidic components and dust particles through an alkali liquor supply device in the spray tower, removes peculiar smell molecules in the waste gas through a water curtain formed by cleaning liquid, and a centrifuge of the gas separation device is used for separating water vapor, oil dirt and solid particles flowing through the spray tower. The water curtain setting can fully contact the reaction with waste gas, improves purifying effect.

The device disclosed by the utility model is matched and arranged, has complete functions, can fully remove dust particles, smoke dust, peculiar smell gas, toxic and harmful gas and the like in the waste gas, and has the advantages of simple structure, low cost input, small occupied area, low energy consumption and convenience in system operation.

Drawings

FIG. 1 is a schematic diagram of an exhaust treatment system according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of the internal structure of a spray tower of an exhaust treatment system according to an embodiment of the present utility model;

FIG. 3 is an enlarged schematic view at A in FIG. 2;

FIG. 4 is a schematic diagram of the exterior configuration of a spray tower of an exhaust treatment system according to an embodiment of the present utility model;

FIG. 5 is an internal cross-sectional view of a multi-stage filtration tank of an exhaust treatment system according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of the exterior structure of a multi-stage filter box of an exhaust treatment system according to an embodiment of the present utility model.

In the figure, 1, an exhaust gas collecting cover; 2. a spray tower; 21. a first processing chamber; 22. a second processing chamber; 23. a first air inlet; 24. a first exhaust port; 25. an alkali liquor inlet; 26. an alkali liquor return port; 27. a cleaning liquid inlet; 28. a cleaning liquid return port; 29. a first corrugated filler; 3. alkali liquor supply device; 31. an alkali liquor water tank; 32. a first liquid outlet end; 321. rotating the spray pipe; 322. a spray nozzle; 33. a first liquid return end; 4. a cleaning liquid supply device; 41. a cleaning liquid tank; 42. a second liquid outlet end; 43. a second liquid return end; 44. a drainage plate; 45. a water collection tank; 46. a baffle; 5. a gas separation device; 51. a second air inlet; 52. a second exhaust port; 53. a centrifuge; 54. a second corrugated filler; 55. a sewage outlet; 6. a multi-stage filtration tank; 61. a first filtering chamber; 611. inserting plate; 62. a second filtering chamber; 621. a drawer cabinet; 63. a third air inlet; 64. a third exhaust port; 7. a driving device; 71. a negative pressure fan; 81. filtering cotton; 82. activated carbon; 91. an observation window; 92. an access door.

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. in the present utility model are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be understood that the terms "connected," "fixed," and the like are used in the present utility model in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; the mechanical connection can be realized, and the welding connection can be realized; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The terms "first", "second", etc. are used in the present utility model to describe various information, but the information should not be limited to these terms, which are only used to distinguish the same type of information from each other. For example, a "first" message may also be referred to as a "second" message, and similarly, a "second" message may also be referred to as a "first" message, without departing from the scope of the utility model.

As shown in fig. 1, an exhaust gas treatment system according to a preferred embodiment of the present utility model includes: a spray tower 2, an alkali liquor supply device 3, a cleaning liquid supply device 4, a gas separation device 5 and a driving device 7;

a first treatment chamber 21 and a second treatment chamber 22 which are sequentially communicated are arranged in the spray tower 2, and the spray tower 2 is provided with a first air inlet 23, a first air outlet 24, an alkali liquor inlet 25, an alkali liquor return inlet 26, a cleaning liquid inlet 27 and a cleaning liquid return inlet 28; the first air inlet 23, the lye inlet 25 and the lye return inlet 26 are respectively communicated with the first treatment chamber 21; the first exhaust port 24, the cleaning solution inlet 27, and the cleaning solution return port 28 are respectively connected to the second processing chamber 22;

the lye supply device 3 comprises: the device comprises an alkali liquor water tank 31, a first liquid outlet end 32 and a first liquid return end 33, wherein the alkali liquor water tank 31 is arranged outside the spray tower 2, the first liquid outlet end 32 is arranged in the first processing chamber 21 and is connected with the alkali liquor water tank 31 through the alkali liquor liquid inlet 25, a spray head is arranged at the first liquid outlet end 32, and the first liquid return end 33 is arranged in the first processing chamber 21 and is connected with the alkali liquor water tank 31 through the alkali liquor liquid return port 26;

the cleaning liquid supply device 4 includes: a cleaning solution tank 41, a second liquid outlet end 42 and a second liquid return end 43, wherein the cleaning solution tank 41 is installed outside the spray tower 2, the second liquid outlet end 42 is positioned in the second processing chamber 22 and is connected with the cleaning solution tank 41 through the cleaning solution inlet 27, the second liquid return end 43 is positioned in the second processing chamber 22 and is connected with the cleaning solution tank 41 through the cleaning solution liquid return opening 28, the second liquid outlet end can spray cleaning solution into the second processing chamber 22, and a water curtain is formed between the second liquid outlet end and the second liquid return end 43;

the gas separation device 5 comprises a second gas inlet 51, a second gas outlet 52 and a centrifuge 53 for water-vapor separation, wherein the centrifuge 53 is arranged between the second gas inlet 51 and the second gas outlet 52, and the second gas inlet 51 is communicated with the first gas outlet 24;

the driving device 7 is configured to drive the exhaust gas to flow from the first inlet 23 through the first treatment chamber 21, the second treatment chamber 22, the first exhaust port 24, the second inlet 51, and the centrifuge 53 in this order, and then to be discharged from the second exhaust port 52.

The exhaust gas treatment system further comprises an exhaust gas collecting cover 1 which is used as an integral air inlet of the exhaust gas treatment system, and can be a single collecting cover or a plurality of collecting covers according to the actual structure selected by the industrial site, and the rear end of the collecting cover is connected with the first air inlet 23 of the spray tower 2 through a pipeline so as to ensure the air tightness of the integral structure.

After entering the waste gas treatment system, the waste gas firstly passes through the first treatment chamber 21 in the spray tower 2, the alkali liquor supply device 3 sprays the waste gas passing through the first treatment chamber 21 through the first liquid outlet end 32, and acidic components in the waste gas are neutralized and removed, so that equipment is prevented from being corroded in the subsequent cleaning treatment process, and the sprayed alkali liquor is recovered by the first liquid return end 33 and flows back to the alkali liquor water tank 31 for recycling.

The cleaning liquid in the second treatment chamber 22 is specifically a deodorant for removing the odor gas in the exhaust gas. The deodorant is neutral, nontoxic, non-flammable, non-corrosive and non-secondary pollution in the prior art, and is a research result developed for purifying malodorous gas of removing hydrogen sulfide, methanol, triphenyl, ammonia and other volatile organic matters. The deodorant has the characteristics of safety, environmental protection and degradability, and can quickly undergo chemical reactions such as decomposition, replacement, adsorption and the like with various harmful and peculiar smell molecular factors, so that the deodorant becomes nontoxic and odorless molecules.

The cleaning solution flows out from the second liquid outlet end 42 to form a whole water curtain, and the water curtain is more specifically a barrier formed by water mist flowing out from the second liquid outlet end 42, and the waste gas is discharged from the first air outlet 24 after passing through the water curtain when flowing through the second treatment chamber 22, so that the waste gas can fully react with the cleaning solution to ensure that the odor molecules are completely removed by the cleaning solution, and the second liquid return end 43 is used for recycling the cleaning solution flowing out from the second liquid outlet end 42 and then sending the recycled cleaning solution back to the cleaning solution tank 41.

The waste gas carries partial water mist after passing through the spray tower 2, enters the gas separation device 5 through the second air inlet 51, and the centrifugal force generated by high-speed rotation of the centrifugal machine 53 can separate oil, water, gas and solid in the waste gas, so that the gas is discharged from the second air outlet 52. Preferably, the second air inlet 51 is located at the lower part of the gas separation device 5, the second air outlet 52 is located at the top of the gas separation device 5, so as to ensure that the waste gas circulates from bottom to top, oil, water and solid separated by the centrifugal machine 53 are convenient to drop, and the bottom of the gas separation device 5 is provided with a drain outlet 55 for connecting a drain pipe to remove sewage and oil stains, and meanwhile, the outer wall of the gas separation device 5 is provided with an access door 92, so that the solid waste generated by separation in the device can be cleaned.

Further, the spray tower 2 has a tower structure, the second processing chamber 22 and the first processing chamber 21 are disposed up and down, and the second processing chamber 22 is located above the first processing chamber 21. The first air inlet 23 is located below, the first air outlet 24 is located above, and the exhaust gas flows from bottom to top, and sequentially passes through the first treatment chamber 21 and the second treatment chamber 22 to remove acidic components and odor molecules therein. The alkali liquor and the cleaning liquid flow downwards through natural gravity, the first liquid outlet end 32 is positioned above the first liquid return end 33, the second liquid outlet end 42 is positioned above the second liquid return end 43, the liquid can be conveniently recovered, the liquid and the exhaust gas flow direction are opposite, and the treatment effect of the exhaust gas can be ensured while the utilization rate of the alkali liquor and the cleaning liquid is improved.

Further, the cleaning solution supply device 4 further comprises a drainage plate 44 for forming the cleaning solution into the water curtain, and the drainage plate 44 is disposed in the second processing chamber 22. As shown in fig. 3, the lower end of the drainage plate 44 may further be provided with a baffle to enable the cleaning liquid to flow down from between the drainage plate 44 and the baffle to form a water curtain, so that the water curtain formed by the structure is more stable. The cleaning liquid is better formed into a whole water curtain through the drainage plate 44, so that the waste gas can pass through the water curtain to react with the cleaning liquid to remove odor molecules.

Further, the cleaning solution supply device 4 includes a plurality of drainage plates 44, and each drainage plate 44 is disposed at an upper-lower interval in a staggered manner, so that the cleaning solution flows to form a plurality of water curtains through which the waste gas passes, and each water curtain is disposed in a staggered manner, so that the waste gas passes through each water curtain in sequence when flowing from bottom to top, thereby improving the utilization rate of the cleaning solution and simultaneously removing the odor molecules in the waste gas.

Further, the notch of the water collecting tank 45 provided with the water collecting tank 45 at the second liquid return end 43 faces the lower end of the drainage plate 44, the water collecting tank 45 has a certain bearing area, and a certain height is arranged on the periphery to prevent the cleaning liquid in the tank from overflowing, so that the cleaning liquid flowing down through the lower end of the drainage plate 44 can be completely collected, the cleaning liquid can be conveniently recycled, and the cleaning liquid cannot drop down to the first treatment chamber 21 below to be mixed with alkali liquor therein.

Further, the spray header comprises a rotary spray pipe 321, and the rotary spray pipe 321 can rotate around the axis of the spray tower 2. The rotary spray pipe 321 can spray alkali liquor to completely cover the first treatment chamber 21, fully react with the waste gas, and can reduce the temperature of the waste gas while removing acidic components in the alkali liquor, thereby facilitating subsequent treatment.

Further, a first corrugated packing 29 is further included, and the first corrugated packing 29 is disposed in the first processing chamber 21 and is located within the injection range of the rotary shower pipe 321. The first corrugated packing 29 is used for adsorbing dust particles in waste gas, and preferably can be S-shaped, so that the contact area between the first corrugated packing and waste gas can be increased, the adsorption effect is improved, particles which are conveniently adsorbed on the surface are directly washed away by alkali liquor, the alkali liquor is filtered and removed through a first liquid return end, and the adsorption rate of the first corrugated packing is kept while the cleaning requirement of the first corrugated packing is reduced.

The shower head further comprises a separate shower nozzle 322, which is arranged below the first corrugated packing 29 and near the first air inlet 23, and which can spray alkali liquor to primarily cool the waste gas entering the first treatment chamber 21, thereby improving the adsorption rate of the first corrugated packing 29. The first liquid return end 33 of the alkali liquid supply device 3 can be arranged at the bottom, and the alkali liquid sprayed by the rotary spray pipe 321 and the spray nozzle 322 can be recovered.

Further, a second corrugated packing 54 is further included, the second corrugated packing 54 is installed in the gas separation device 5, and the second corrugated packing 54 is located between the second gas inlet 51 and the centrifuge 53, wherein the second corrugated packing 54 may be located below the centrifuge 53. The second corrugated packing 54 is mainly used for adsorbing solid particles thrown out by the centrifugal machine 53, and can be preferably a W-shaped packing, and a reverse barb is arranged on the design of the W-shaped packing, so that the solid particles can be better trapped, and the solid particles are conveniently stacked. The second corrugated packing 54 can be installed, cleaned, and replaced through the access door 92 of the gas separation device 5.

Further, the filter further comprises a multistage filter box 6, filter cotton 81 for removing water mist and activated carbon 82 for adsorbing organic molecules, wherein a first filter chamber 61 and a second filter chamber 62 which are sequentially communicated are arranged in the multistage filter box 6, the filter cotton 81 is arranged in the first filter chamber 61, the activated carbon 82 is arranged in the second filter chamber 62, a third air inlet 63 and a third air outlet 64 are formed in the multistage filter box 6, the third air inlet 63 is communicated with the second air outlet 52 and the first filter chamber 61, and the third air outlet 64 is communicated with the second filter chamber 62.

The first filtering chamber 61 is internally provided with the plugboard 611, the plugboard 611 is in sliding connection with the outer wall of the first filtering chamber 61, the filter cotton 81 is installed in the first filtering chamber 61 through the plugboard 611 structure, the filter cotton 81 is convenient to take out, clean and replace, and the filter cotton 81 can adhere or adsorb fine liquid fogdrops therein to enable the fine liquid fogdrops to be gradually condensed into liquid drops, and falls to the bottom under the action of gravity. The glass fiber structure in the filter cotton 81 is utilized to change the direction of the inertia force of the aerosol in the waste gas, so that the aerosol is separated from the waste gas, the impact rate of the waste gas and the waste gas can be increased by arranging multiple fibers encrypted layer by layer, and the filtering efficiency is improved. The plugboard 611 type structure can increase the number of layers according to the requirement, and further improves the filtering effect.

The second filtering chamber 62 is internally provided with a pumping cabinet 621, the pumping cabinet 621 is in sliding connection with the outer wall of the second filtering chamber 62, and the activated carbon 82 is arranged in the second filtering chamber 62 through the pumping cabinet 621. The activated carbon 82 is capable of deodorizing and purifying the exhaust gas by its porous structure, and it adsorbs organic molecules in the exhaust gas to separate it from the exhaust gas, thereby purifying the exhaust gas as a final whole before being discharged. Among them, the activated carbon 82 is preferably a honeycomb activated carbon 82, and the adsorption rate determines the adsorption capacity for VOCs.

Further, the driving device 7 is a negative pressure fan 71, the negative pressure fan 71 is installed at the third exhaust port 64, the negative pressure fan 71 is used for sucking waste gas as a power source of the whole waste gas treatment system, continuous flow of the waste gas in the system is ensured to be subjected to step-by-step purification treatment, the fan motor can adjust proper motor power according to the waste gas treatment capacity of the system, and the air flow rate of each air inlet is ensured to be sufficient, and the power of the system is ensured to be sufficient.

Wherein, the tower wall of the spray tower 2 is provided with an observation window 91, and the observation window 91 faces the first treatment chamber 21 and/or the second treatment chamber 22 and is used for observing the operation conditions of the alkali liquor supply device 3 and the cleaning liquid supply device 4; the tower wall of the spray tower 2 is also provided with an access door 92, and the access door 92 faces the first treatment chamber 21 and/or the second treatment chamber 22 and is used for installing, cleaning and maintaining the rotary spray pipe 321, the first corrugated packing 29, the drainage plate 44 and other devices.

Wherein, the dust particles expressed in the application are mainly filling powder such as calcium powder talcum powder, powder auxiliary agents such as antioxidant, flame retardant and the like; smoke is mainly carbon particles and oxides, and smoke refers to harmful gas molecules (VOCs).

The working process of the embodiment of the utility model is as follows: after passing through the collection hood, the exhaust gas enters the spray tower 2 through the first air inlet 23, and first, the primary separation of dust particles is realized through the S-shaped first corrugated packing 29. The alkali liquor enters the first treatment chamber 21 of the spray tower 2 from the first liquid inlet end, the first corrugated filler 29 is sprayed through the rotary spray pipe 321 to cool and clean the waste gas, and the waste gas is recycled to the alkali liquor water tank 31 through returning to the first liquid return end 33; then the waste gas enters the upper layer second treatment chamber 22 to be cleaned by the cleaning liquid, the cleaning liquid enters the spray tower 2 from the second liquid outlet end, flows through the upper drainage plate 44 and the lower drainage plate 44, returns to the cleaning liquid water tank 41 for recycling through the water collecting tank 45 and the second liquid return end 43, passes through the cleaning liquid water curtain between the two drainage plates 44 to realize preliminary peculiar smell removal, and finally is discharged from the second exhaust port 52 to enter the next device.

The waste gas discharged from the spray tower 2 enters the gas separation device 5 from the second air inlet 51, passes through the W-shaped second corrugated filler 54 to further remove the moisture and fine particles in the waste gas, and passes through the centrifugal machine 53 at 2200 rpmUnder the action of high-speed rotation and centrifugation, the components such as solid, oil, water vapor and the like in the waste gas are effectively separated, separated oil dirt and sewage enter a sewage treatment system through a sewage outlet 55, separated solid waste is manually cleaned through an access door 92 of the gas separation device 5, and finally the waste gas is discharged from a second air outlet 52 to enter the next device. In the embodiment, the power of the adopted separator is 0.2KW, and the treatment air quantity can reach 2000m ³ /h。

The waste gas discharged from the gas separation device 5 enters the multistage filter box 6 through the third air inlet 63, and firstly passes through the first filter chamber 61, and impurities and moisture in the waste gas are removed through the adhesion and adsorption of the filter cotton 81; the exhaust gas then enters the second filter chamber 62, and organic exhaust gas molecules in the exhaust gas are adsorbed by the activated carbon 82, so as to reach the final step of exhaust gas purification, and finally enter the negative pressure fan 71 through the third exhaust port 64 to be discharged into the atmosphere. In this embodiment, the honeycomb activated carbon 82 with 100mm x 100mm is used, and has a better adsorption effect on VOC.

In summary, the embodiment of the utility model provides an exhaust gas treatment system, wherein the exhaust gas can remove dust particles, smoke dust and peculiar smell gas in the exhaust gas through a rotary spray pipe 321 and a multi-stage water curtain structure in a spray tower 2; and then the water vapor and other mixtures flowing through the spray tower 2 are separated by the centrifuge 53 of the gas separation device 5, and finally the water vapor and other mixtures are adsorbed by the filter cotton 81 and the activated carbon 82 of the multi-stage filter box 6, so that dust particles and peculiar smell gases in the waste gas are further removed. The process utilizes the negative pressure fan 71 to provide power, so that each device continuously and stably operates, and continuous treatment of waste gas is realized.

The device is matched and arranged, has complete functions, and is convenient to clean and maintain in use by the arrangement of doors and windows and guide rails and the adoption of the plugboard 611 type and drawer type structure. The utility model can sufficiently remove dust particles, smoke dust, peculiar smell gas, toxic and harmful gas and the like in the waste gas, and has the advantages of simple structure, low cost input, small occupied area, low energy consumption and convenient system operation. The utility model can treat waste gas with large odor, and is especially suitable for treating waste gas generated in the production process of bromine-containing flame-retardant ABS modified materials.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.

Claims (10)

1. An exhaust treatment system, comprising: the device comprises a spray tower, an alkali liquor supply device, a cleaning liquid supply device, a gas separation device and a driving device;

a first treatment chamber and a second treatment chamber which are sequentially communicated are arranged in the spray tower, and the spray tower is provided with a first air inlet, a first air outlet, an alkali liquor inlet, an alkali liquor return inlet, a cleaning liquid inlet and a cleaning liquid return inlet; the first air inlet, the alkali liquor inlet and the alkali liquor return inlet are respectively communicated to the first treatment chamber; the first exhaust port, the cleaning liquid inlet and the cleaning liquid return port are respectively communicated to the second treatment chamber;

the lye supply device comprises: the device comprises an alkali liquor water tank, a first liquid outlet end and a first liquid return end, wherein the alkali liquor water tank is arranged outside the spray tower, the first liquid outlet end is arranged in the first processing chamber and is connected with the alkali liquor water tank through the alkali liquor inlet, the first liquid outlet end is provided with a spray head, and the first liquid return end is arranged in the first processing chamber and is connected with the alkali liquor water tank through the alkali liquor liquid return opening;

the cleaning liquid supply device includes: the second liquid outlet end is positioned in the second processing chamber and is connected with the cleaning liquid tank through the cleaning liquid inlet, the second liquid return end is positioned in the second processing chamber and is connected with the cleaning liquid tank through the cleaning liquid return opening, the second liquid outlet end can spray cleaning liquid into the second processing chamber, and a water curtain is formed between the second liquid outlet end and the second liquid return end;

the gas separation device comprises a second gas inlet, a second gas outlet and a centrifugal machine for water-vapor separation, wherein the centrifugal machine is arranged between the second gas inlet and the second gas outlet, and the second gas inlet is communicated with the first gas outlet;

the driving device is used for driving the waste gas to flow through the first processing chamber, the second processing chamber, the first exhaust port, the second air inlet and the centrifugal machine in sequence from the first air inlet and then to be exhausted from the second exhaust port.

2. The exhaust treatment system of claim 1, wherein the second treatment chamber is disposed above and below the first treatment chamber and the second treatment chamber is positioned above the first treatment chamber.

3. The exhaust treatment system of claim 2, wherein the cleaning solution supply device further comprises a flow directing plate for directing cleaning solution into the water curtain, the flow directing plate being disposed within the second treatment chamber.

4. The exhaust treatment system of claim 3, wherein the cleaning fluid supply means comprises a plurality of said flow directing plates, each of said flow directing plates being staggered up and down for flowing cleaning fluid to form a plurality of said water curtains for exhaust gas therethrough.

5. The exhaust treatment system of claim 4, wherein a water collection sump is provided at the second liquid return end.

6. The exhaust treatment system of claim 2, wherein the showerhead includes a rotary spray pipe rotatable about an axis of the spray tower.

7. The exhaust treatment system of claim 6, further comprising a first corrugated packing disposed within the first treatment chamber and within the spray range of the rotary spray pipe.

8. The exhaust treatment system of claim 2, wherein the gas separation device further comprises a second corrugated packing, the second corrugated packing being mounted within the gas separation device and the second corrugated packing being located between the second gas inlet and the centrifuge.

9. The exhaust gas treatment system according to any one of claims 1 to 8, further comprising a multistage filter box, filter cotton for removing water mist and activated carbon for adsorbing organic molecules, wherein a first filter chamber and a second filter chamber which are sequentially communicated are arranged in the multistage filter box, the filter cotton is arranged in the first filter chamber, the activated carbon is arranged in the second filter chamber, a third air inlet and a third air outlet are formed in the multistage filter box, the third air inlet is communicated with the second air outlet and the first filter chamber, and the third air outlet is communicated with the second filter chamber.

10. The exhaust treatment system of claim 9, wherein the drive is a negative pressure fan mounted at the third exhaust.

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