CN210229610U

CN210229610U - Waste gas purification system

Info

Publication number: CN210229610U
Application number: CN201920948543.4U
Authority: CN
Inventors: Ming Ye; 叶明�; Yun Qu; 曲云; Hailiang Qian; 钱海亮; Feng Wu; 吴锋
Original assignee: Wuxi Xinghua Electric Power Environmental Protection Engineering Co ltd
Current assignee: Wuxi Xinghua Electric Power Environmental Protection Engineering Co ltd
Priority date: 2019-06-21
Filing date: 2019-06-21
Publication date: 2020-04-03
Anticipated expiration: 2029-06-21

Abstract

The utility model relates to a waste gas purification system, which comprises a spray water bath tower; the first inlet of the water bath tower is connected with a pipeline from recycled water in the reuse water pool; the second inlet of the water bath tower is connected with a pipeline of waste gas from a paint spraying station; a third outlet of the water bath tower is connected with a first air inlet of the centrifugal dehumidifier through a pipeline and a flange plate; a fourth outlet of the water bath tower is connected with a second air inlet of the centrifugal dehumidifier through a pipeline and a flange plate; an air outlet of the centrifugal dehumidifier is connected with an inlet of the second stop valve through a first main flow guide pipe; the outlet of the second stop valve is connected with a tee joint; a first branch pipe of the tee joint is connected with a first air inlet of the activated carbon adsorption tower; a second branch pipe of the three-way pipe fitting is connected with a second air inlet of the activated carbon adsorption tower; a first outlet of the activated carbon adsorption tower is communicated with an inlet of the third stop valve through a second main flow pipe; and the outlet of the third stop valve is communicated with an explosion-proof induced draft fan. The utility model discloses carry out purification treatment to organic waste gas.

Description

Waste gas purification system

Technical Field

The utility model relates to a purify flue gas equipment field, in particular to exhaust gas purification system.

Background

Toluene is an important chemical raw material. With the deep development of the reform and opening of China, the industries such as electronics, machinery, printing, automobile and locomotive manufacturing and the like are developed rapidly and rapidly. Paints and adhesives using benzene compounds as a solvent are increasingly used. The problem of benzene series waste gas pollution is serious, and if the benzene series waste gas is not discharged and treated in a centralized manner in time, the benzene series waste gas is harmful to the health of workers and residents.

In organic chemical production of dyeing and weaving industry, adhesive tape industry, rubber pages, PU leather and the like, a large amount of volatile organic solvent waste gas can be discharged, wherein the discharge of toluene-containing waste gas is very common, and the toluene waste gas can cause serious harm to human bodies and living environments.

Toluene is also an important ten-thousandth fuel and the exhaust gases from plants, gas stations and automobiles that use toluene are a major source of pollution. Toluene in the air of a city is mainly derived from emissions related to gasoline and solvent loss and emissions caused by industrial activities. Accidents during storage and transportation are another source of toluene contamination.

Hazardous nature of toluene: flammable, the vapors of which can form explosive mixtures with air. It is easy to be burnt and exploded when exposed to fire and high heat. Toluene reacts strongly with the oxidant. The flow rate is too fast and static electricity is easily generated and accumulated. Its vapor is heavier than air and can diffuse to a considerable distance at a lower position, causing a flashback in the case of an open flame.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art, the utility model discloses a waste gas purification system.

The utility model discloses the technical scheme who adopts as follows:

an exhaust gas purification system includes a spray water bath tower; a first inlet at the top of the water bath tower is connected with a pipeline for circulating water from a reuse water pool; a second inlet on the side wall of the water bath tower is connected with a pipeline of waste gas from a paint spraying station; a third outlet on the side wall of the water bath tower is connected with a first air inlet of the centrifugal dehumidifier through a pipeline and a flange plate; a fourth outlet on the side wall of the water bath tower is connected with a second air inlet of the centrifugal dehumidifier through a pipeline and a flange plate; an air outlet of the centrifugal dehumidifier is connected with an inlet of the second stop valve through a first main flow guide pipe; the outlet of the second stop valve is connected with a three-way pipe fitting; a first branch pipe of the three-way pipe fitting is connected with a first air inlet of the activated carbon adsorption tower; a second branch pipe of the three-way pipe fitting is connected with a second air inlet of the activated carbon adsorption tower; a first outlet of the activated carbon adsorption tower is communicated with an inlet of the third stop valve through a second main flow pipe; the outlet of the third stop valve is communicated with the inlet of the explosion-proof induced draft fan; the outlet of the explosion-proof induced draft fan is connected with an emptying pipeline.

The method is further characterized in that: the second inlet and the third outlet are on different sides; the third outlet and the fourth outlet are on the same side.

The method is further characterized in that: and a first differential pressure gauge is arranged on the connecting pipeline of the third outlet.

The method is further characterized in that: and a hygrometer is installed on the first main flow guide pipe.

The method is further characterized in that: the second main flow guide pipe is provided with a second differential pressure gauge; and the emptying pipeline is provided with a third differential pressure gauge.

The method is further characterized in that: and a first stop valve is arranged on the connecting pipeline of the second inlet.

The method is further characterized in that: the bottom outlet of the water bath tower is connected with a circulating water pool through a pipeline; and a fourth stop valve is arranged on the pipeline.

The utility model has the advantages as follows:

1. the utility model discloses carry out purification treatment to the waste gas toluene that sprays paint.

2. The utility model discloses a water bath tower can furthest get rid of in the waste gas and remain the granule.

3. The utility model discloses a moisture secretly can furthest be got rid of in the waste gas to high-efficient centrifugal dehumidifier to thoroughly guarantee the air current permeability of active carbon adsorption bed.

4. The utility model discloses an active carbon adsorption device can furthest reduce the organic residue content of chemistry in the waste gas.

5. The utility model discloses the combination baffling subsides, decompression subsides, the damping subsides, centrifugation settlement class theory of operation.

Drawings

Fig. 1 is a schematic view of the present invention.

In the figure: 1. a water bath tower; 11. a first inlet; 12. a second inlet; 13. a third outlet; 14. a fourth outlet; 15. a first shut-off valve; 16. a bottom outlet; 17. a fourth stop valve; 2. a centrifugal dehumidifier; 21. a first air inlet; 22. a second air inlet; 31. a first main flow pipe; 32. a second stop valve; 4. an activated carbon adsorption tower; 41. a first air inlet; 42. a second air inlet; 51. a second main flow pipe; 52. a third stop valve; 6. an explosion-proof induced draft fan; 71. a first differential pressure gauge; 72. a second differential pressure gauge; 73. a third differential pressure gauge; 8. and a hygrometer.

Detailed Description

The foregoing and other features, aspects and utilities of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Therefore, the directional terminology used is for the purpose of describing, but not limiting, the invention, and moreover, like reference numerals designate like elements throughout the embodiments.

The following describes a specific embodiment of the present embodiment with reference to the drawings.

Fig. 1 is a schematic view of the present invention. As shown in fig. 1, an exhaust gas purification system includes a shower water bath tower 1. The first inlet 11 at the top of the water bath tower 1 is connected with a pipeline for circulating water from a reuse water pool. The second inlet 12 of the side wall of the water bath tower 1 is connected with a pipeline of waste gas from the painting station. A first shut-off valve 15 is installed on a connection pipe of the second inlet 12. The third outlet 13 on the side wall of the water bath tower 1 is connected with the first air inlet 21 of the centrifugal dehumidifier 2 through a pipeline and a flange plate. The connecting pipeline of the third outlet 13 is provided with a first differential pressure gauge 71, and the fourth outlet 14 on the side wall of the water bath tower 1 is connected with the second air inlet 22 of the centrifugal dehumidifier 2 through a pipeline and a flange. The second inlet 12 and the third outlet 13 are on different sides. The third outlet 13 and the fourth outlet 14 are on the same side. The bottom outlet 16 of the water bath tower 1 is connected with a circulating water pool through a pipeline. A fourth stop valve 17 is mounted on the pipeline.

The air outlet of the centrifugal dehumidifier 2 is connected with the inlet of the second stop valve 32 through the first main flow pipe 31. The first main draft tube 31 is provided with a hygrometer 8. The outlet of the second shut-off valve 32 is connected to a tee. The first branch pipe of the three-way pipe fitting is connected with a first air inlet 41 of the activated carbon adsorption tower 4. The second branch pipe of the three-way pipe fitting is connected with a second air inlet 42 of the active carbon adsorption tower 4. The first outlet of the activated carbon adsorption tower 4 communicates with the inlet of the third cut-off valve 52 through the second main flow pipe 51. The outlet of the third stop valve 52 is communicated with the inlet of the explosion-proof induced draft fan 6. The outlet of the explosion-proof induced draft fan 6 is connected with an emptying pipeline. The second main flow duct 51 is provided with a second differential pressure gauge 72. The evacuation conduit is fitted with a third differential pressure gauge 73.

The first differential pressure gauge 71, the second differential pressure gauge 72, and the third differential pressure gauge 73 are commercially available instruments for measuring a fluid having a small pressure or a small differential pressure.

Circulating water of the reuse water pool enters the water bath tower 1 from the first inlet 11, and paint spraying waste gas toluene is introduced into the water bath tower 1 from the second inlet 12 through an air pipe. After passing through the packing layer of the water bath tower 1, the toluene waste gas and the sodium hydride absorbent are sufficiently contacted with the gas and the liquid to absorb and neutralize the gas. After purification, the waste gas is dehydrated and removed by a smoke plate of the water bath tower 1, after the tower bottom of the water bath tower 1 is pressurized by a water pump, the absorbent is sprayed on the top of the water bath tower 1 and then sprayed downwards, and then the absorbent is recycled to the tower bottom. And then the gas is introduced into the centrifugal dehumidifier 2 from the first air inlet 21 and the second air inlet 22 through pipelines, moisture entrained in the gas is effectively removed by the centrifugal dehumidifier 2, and the humidity in the gas is measured by the hygrometer 8. The second stop valve 32 is opened, and the dried gas is introduced into the activated carbon adsorption tower 4.

When organic gas enters the activated carbon adsorption tower 4, the wind speed drops instantly, and larger particle impurities contained in the gas are filtered, blocked and isolated by the activated carbon filter cotton and fall into the bottom of the activated carbon adsorption tower 4. And the organic gas dissolved in the gas enters the active carbon filter layer along with the gas flow direction, when the organic gas enters the carbon layer, the organic gas is absorbed into the carbon by the active carbon, and the clean air passes through the carbon layer and is introduced into the gas outlet bin through the explosion-proof induced draft fan 6.

The utility model adopts the water bath tower to remove the residual particles in the waste gas to the utmost extent; the high-efficiency centrifugal dehumidifier can remove moisture entrained in the waste gas to the maximum extent, thereby thoroughly ensuring the air flow permeability of the activated carbon adsorption bed; the content of chemical organic residues in the waste gas can be reduced to the maximum extent by adopting the activated carbon adsorption tower 4; the utility model discloses the combination baffling subsides, decompression subsides, the damping subsides, centrifugation settlement class theory of operation.

The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made without departing from the basic structure of the invention.

Claims

1. An exhaust gas purification system characterized in that: comprises a water bath tower (1) for spraying; a first inlet (11) at the top of the water bath tower (1) is connected with a pipeline for circulating water from a reuse water pool; a second inlet (12) on the side wall of the water bath tower (1) is connected with a pipeline of waste gas from a paint spraying station; a third outlet (13) on the side wall of the water bath tower (1) is connected with a first air inlet (21) of the centrifugal dehumidifier (2) through a pipeline and a flange plate; a fourth outlet (14) on the side wall of the water bath tower (1) is connected with a second air inlet (22) of the centrifugal dehumidifier (2) through a pipeline and a flange plate; an air outlet of the centrifugal dehumidifier (2) is connected with an inlet of a second stop valve (32) through a first main flow pipe (31); the outlet of the second stop valve (32) is connected with a tee pipe; a first branch pipe of the three-way pipe fitting is connected with a first air inlet (41) of the activated carbon adsorption tower (4); a second branch pipe of the three-way pipe fitting is connected with a second air inlet (42) of the activated carbon adsorption tower (4); a first outlet of the activated carbon adsorption tower (4) is communicated with an inlet of a third stop valve (52) through a second main flow pipe (51); the outlet of the third stop valve (52) is communicated with the inlet of the explosion-proof induced draft fan (6); the outlet of the explosion-proof induced draft fan (6) is connected with an emptying pipeline.

2. The exhaust gas purification system according to claim 1, characterized in that: the second inlet (12) and the third outlet (13) are different sides; the third outlet (13) and the fourth outlet (14) are arranged on the same side.

3. The exhaust gas purification system according to claim 1, characterized in that: and a first differential pressure gauge (71) is arranged on a connecting pipeline of the third outlet (13).

4. The exhaust gas purification system according to claim 1, characterized in that: a hygrometer (8) is mounted on the first main flow guide pipe (31).

5. The exhaust gas purification system according to claim 1, characterized in that: the second main flow guiding pipe (51) is provided with a second differential pressure gauge (72); the emptying pipeline is provided with a third differential pressure gauge (73).

6. The exhaust gas purification system according to claim 1, characterized in that: a first stop valve (15) is mounted on the connecting pipeline of the second inlet (12).

7. The exhaust gas purification system according to claim 1, characterized in that: the bottom outlet (16) of the water bath tower (1) is connected with a circulating water pool through a pipeline; and a fourth stop valve (17) is arranged on the pipeline.