CN216539161U - Low amount of wind paint house VOC exhaust gas treatment system - Google Patents
Low amount of wind paint house VOC exhaust gas treatment system Download PDFInfo
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- CN216539161U CN216539161U CN202123219236.9U CN202123219236U CN216539161U CN 216539161 U CN216539161 U CN 216539161U CN 202123219236 U CN202123219236 U CN 202123219236U CN 216539161 U CN216539161 U CN 216539161U
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Abstract
本实用新型涉及一种低风量油漆房VOC废气处理系统，包括喷漆房、吸附塔、抽风机、催化焚烧装置、换热器和主送风机，所述喷漆房顶部设有布风口，底部设有抽风口，空气经主送风机送风进入喷漆房顶部的布风口，所述抽风口连接抽气总管，抽气总管上设有抽风机和在线浓度检测仪，所述抽气总管分两路，一路连接吸附塔，另一路连接催化焚烧装置。本实用新型采用顶部送风+底部抽风的收集废气方式，抽风速度低于送风速度，漆雾大部分沉降到地面，在抽风口设置过滤棉，使漆雾进一步沉降，废气收集效率高，无需采用转轮浓缩，大大降低了能耗，减少投资；热能综合利用，降低运行费用，维护简单。
The utility model relates to a VOC waste gas treatment system for a paint room with low air volume, which comprises a paint spray room, an adsorption tower, an exhaust fan, a catalytic incineration device, a heat exchanger and a main blower. The air is supplied by the main blower and enters the air distribution outlet on the top of the spray booth. The air outlet is connected to the air extraction main pipe. The air extraction main pipe is provided with an air extraction fan and an online concentration detector. The air extraction main pipe is divided into two channels, one connected The adsorption tower, and the other way is connected to the catalytic incineration device. The utility model adopts the method of collecting exhaust gas with top air supply and bottom air extraction. The exhaust air speed is lower than the air supply speed, and most of the paint mist settles to the ground. Filter cotton is arranged at the air exhaust port to further settle the paint mist. The exhaust gas collection efficiency is high, and no need The use of runner concentration greatly reduces energy consumption and investment; comprehensive utilization of thermal energy reduces operating costs and simple maintenance.
Description
Technical Field
The utility model relates to the technical field of industrial waste gas collection and purification, in particular to a VOC waste gas treatment system for a low-air-volume paint room.
Background
With the release of the 'blue sky guard war', the country pays more and more attention to environmental protection, and VOC generated in the paint spraying process becomes an important killer of atmospheric pollution. A large amount of coating drying waste gas is discharged from a paint spraying workshop in the production process, and the waste gas contains benzene series with higher concentration. The exhaust gas must be rigorously treated before it can be drawn into the atmosphere. The paint spraying waste gas is mainly composed of two parts, namely liquid paint mist and gaseous Volatile Organic Compounds (VOCs). The most common volatile organic compounds are benzene, toluene, xylene, styrene, trichloroethylene, chloroform, trichloroethane, diisocyanate (TDI), diisocyanatophenyl ester, and the like.
The existing main treatment technology is rotating wheel + RCO, and the method is mature and reliable and can be suitable for treating waste gas of a paint room. However, in the waste gas collecting process, the whole house is sealed and blown, and then the whole house is ventilated, so that the waste gas collecting efficiency is too low, the air volume is too large, and the problems of large air volume and low concentration have to be solved by adopting a runner concentration mode. On one hand, investment is increased, on the other hand, the fan power is large, and the operation cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects and provides a VOC waste gas treatment system for a low-air-volume paint room, which adopts a waste gas collecting mode of top air supply and bottom air suction, wherein the air suction speed is lower than the air supply speed, most of paint mist is settled to the ground, and a filter cotton is arranged at an air suction opening to further settle the paint mist, so that the waste gas collection treatment is facilitated; the required air volume is reduced to 1/10-1/40, the concentration is improved to 10-40 times of the original concentration, the waste gas collection efficiency is high, the concentration by adopting a rotating wheel is not needed, the energy consumption is greatly reduced, and the investment is reduced; the heat energy is comprehensively utilized, the operating cost is reduced, and the maintenance is simple.
The purpose of the utility model is realized as follows:
the utility model provides a low amount of wind paint room VOC exhaust-gas treatment system, burns device, heat exchanger and main forced draught blower including spray booth, adsorption tower, air exhauster, catalysis, spray booth top is equipped with the cloth wind gap, and the bottom is equipped with the suction opening, and the air gets into the cloth wind gap at spray booth top through main forced draught blower air supply, the suction opening is connected the air exhaust house steward, is equipped with air exhauster and online concentration detector on the air exhaust house steward, the air exhaust house steward divides two tunnel, connects the adsorption tower all the way, and another way is connected the catalysis and is burned the device.
Preferably, the air outlet of the catalytic incineration device is connected with the heat exchanger, air enters the hot air main pipe after being subjected to heat exchange by the heat exchanger, the auxiliary air feeder is arranged on the hot air main pipe, the hot air main pipe is divided into two paths, one path of hot air enters the adsorption tower through the first air supply pipe, and the other path of hot air enters the paint spraying room after being connected with the air supply pipe through the second air supply pipe.
Preferably, the air distribution opening and the air suction opening are filled with filter cotton.
Preferably, the suction speed of the suction fan is slower than the blowing speed of the main blower.
Preferably, the air supply speed of the main blower is 0.05-0.5m/s, and the air draft speed of the exhaust fan is 0.03-0.1 m/s.
The utility model has the beneficial effects that:
the utility model abandons the traditional whole-house air supply and whole-house air draft modes, adopts a waste gas collecting mode of top air supply and bottom air draft, the air draft speed is lower than the air supply speed, most paint mist is settled to the ground, and the air draft opening is provided with filter cotton, so that the paint mist is further settled, and the waste gas collection and treatment are facilitated; the required air volume is reduced to 1/10-1/40, the concentration is improved to 10-40 times of the original concentration, the waste gas collection efficiency is high, the concentration by adopting a rotating wheel is not needed, the energy consumption is greatly reduced, and the investment is reduced; the heat energy is comprehensively utilized, the operating cost is reduced, and the maintenance is simple.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Wherein: a paint spray booth 1; an air distribution port 1.1; an air suction opening 1.2; an adsorption tower 2; an exhaust fan 3; a catalytic incineration unit 4; a heat exchanger 5; and a main blower 6; an air extraction manifold 7; an online concentration detector 8; a first exhaust tube 9; a second extraction duct 10; a hot air main pipe 11; an auxiliary blower 12; a first blast pipe 13; a second blast pipe 14; and a blast pipe 15.
Detailed Description
Referring to fig. 1, the utility model relates to a low-air-volume paint room VOC waste gas treatment system, which comprises a paint spray room 1, an adsorption tower 2, an exhaust fan 3, a catalytic incineration device 4, a heat exchanger 5 and a main blower 6, wherein the paint spray room 1 is closed, the top of the paint spray room is provided with a cloth air inlet 1.1, the bottom or the side part of the paint spray room is provided with an air suction inlet 1.2, the cloth air inlet 1.1 and the air suction inlet 1.2 are both filled with filter cotton, the filter cotton is filled in the air suction inlet 1.2 to remove paint mist contained in waste gas, and the filter cotton is arranged at the cloth air inlet 1.1 to remove dust contained in air and purify air.
Air gets into the cloth wind gap 1.1 at spray booth top through the air supply of main forced draught blower 6, main forced draught blower 6 sets up on blast pipe 15, suction opening 1.2 is connected air exhaust manifold 7, is equipped with air exhauster 3 and online concentration detector 8 on air exhaust manifold 7, air exhaust manifold 7 divides two the tunnel, and one road is crossed first exhaust tube 9 and is connected adsorption tower 2, and another road is connected catalysis and is burned device 4 through second exhaust tube 10, heat exchanger 5 is connected to catalysis burning device 4 gas outlet, carries out recycle to burning waste heat, and is energy-concerving and environment-protective, and the air gets into hot-blast manifold 11 after heat exchanger 5 heat transfer, and supplementary forced draught blower 12 sets up on hot-blast manifold 11, hot-blast manifold 11 divides two the tunnel, and hot-blast air gets into adsorption tower 2 through first blast pipe 13 all the way, and another way hot-blast air gets into spray booth 1 after connecting blast pipe 15 through second blast pipe 14.
The working principle is as follows:
the mode of top air supply and bottom (or side) air draft is adopted, the air supply speed of the air feeder is 0.05-0.5m/s, the air draft speed of the exhaust fan is 0.03-0.1m/s, the air draft speed is lower than the air supply speed, the air speed is kept, most of paint mist is settled to the ground, the replacement times of filter cotton are greatly reduced, the paint mist cannot fall into the air draft opening, the paint mist sucked into the air draft opening is prevented from being too much, and the normal collection and treatment of VOC under the premise of low air volume are ensured.
The exhaust fan 3 performs air extraction, the online concentration detector 12 detects the VOC concentration in the waste gas in real time, when the VOC concentration is 3000-6000mg/m, the waste gas is directly sent to the catalytic incineration device 4 for incineration and is discharged after incineration, the incinerated waste heat heats air through the heat exchanger 5, one part of the hot air is sent to the adsorption tower 2 for desorption, the other part of the hot air returns to the paint spray booth 1 for heating the paint spray booth 1, the packaged paint is dried at a certain temperature, and the combustion waste heat is utilized as much as possible;
when the VOC concentration is lower than 3000mg/m, the waste gas goes to the adsorption tower 2 for adsorption and concentration, the gas after adsorption treatment is discharged in a qualified mode, desorption is carried out after adsorption saturation, and the desorbed VOC enters the catalytic incineration device 4 for incineration;
when VOC concentration is higher than 6000mg/m when cultivating, the amount of wind of air exhauster 3 increases, and air exhauster 3 is the frequency conversion fan, and when VOC concentration is less than 6000mg/m during the heavy planting, the amount of wind of air exhauster 3 keeps the low frequency operation.
In addition to the above embodiments, the present invention also includes other embodiments, and any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of the claims of the present invention.
Claims (5)
1. The utility model provides a low amount of wind paint room VOC exhaust treatment system which characterized in that: including spray booth (1), adsorption tower (2), air exhauster (3), catalytic incineration device (4), heat exchanger (5) and main forced draught blower (6), the spray booth top is equipped with cloth wind gap (1.1), and bottom or lateral part are equipped with suction opening (1.2), and the air gets into spray booth top's cloth wind gap (1.1) through main forced draught blower (6) air supply, suction manifold (7) is connected in suction opening (1.2), is equipped with air exhauster (3) and on-line concentration detector (8) on suction manifold (7), suction manifold (7) divide two tunnel, connects adsorption tower (2) all the way, and catalytic incineration device (4) is connected on another way.
2. The low air volume paint room VOC exhaust treatment system of claim 1, characterized in that: the air outlet of the catalytic incineration device (4) is connected with the heat exchanger (5), air enters the hot air main pipe (11) after passing through the heat exchanger (5) for heat exchange, the auxiliary air feeder (12) is arranged on the hot air main pipe (11), the hot air main pipe (11) is divided into two paths, one path of hot air enters the adsorption tower (2) through the first air supply pipe (13), and the other path of hot air enters the paint spraying room (1) after being connected with the air supply pipe (15) through the second air supply pipe (14).
3. The low air volume paint room VOC exhaust treatment system of claim 1, characterized in that: the air distribution opening (1.1) and the air suction opening (1.2) are both filled with filter cotton.
4. The low air volume paint room VOC exhaust treatment system of claim 1, characterized in that: the air draft speed of the exhaust fan (3) is slower than the air supply speed of the main air supply blower (6).
5. The low air volume paint room VOC exhaust treatment system of claim 4, characterized in that: the air supply speed of the main air supply blower (6) is 0.05-0.5m/s, and the air draft speed of the exhaust fan (3) is 0.03-0.1 m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123219236.9U CN216539161U (en) | 2021-12-21 | 2021-12-21 | Low amount of wind paint house VOC exhaust gas treatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123219236.9U CN216539161U (en) | 2021-12-21 | 2021-12-21 | Low amount of wind paint house VOC exhaust gas treatment system |
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| CN216539161U true CN216539161U (en) | 2022-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123219236.9U Expired - Fee Related CN216539161U (en) | 2021-12-21 | 2021-12-21 | Low amount of wind paint house VOC exhaust gas treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117920709A (en) * | 2023-12-29 | 2024-04-26 | 上海同济华康环境科技有限公司 | VOC waste gas safety collection method |
-
2021
- 2021-12-21 CN CN202123219236.9U patent/CN216539161U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117920709A (en) * | 2023-12-29 | 2024-04-26 | 上海同济华康环境科技有限公司 | VOC waste gas safety collection method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220517 |