CN214182369U - Color-coated organic waste gas treatment device - Google Patents
Color-coated organic waste gas treatment device Download PDFInfo
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- CN214182369U CN214182369U CN202021640675.XU CN202021640675U CN214182369U CN 214182369 U CN214182369 U CN 214182369U CN 202021640675 U CN202021640675 U CN 202021640675U CN 214182369 U CN214182369 U CN 214182369U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The utility model discloses a color coating organic waste gas treatment device, its characterized in that: comprises a spray washing tower, a wet electrostatic decoking device, a UV photocatalytic purification device, a microbial purification tower, an induced draft fan and a chimney which are sequentially communicated through a pipeline; the device comprises a spray washing tower, a microorganism purification tower, a waste gas collecting pipe, a microorganism purification tower washing area, a microorganism purification tower filter material area and a demisting layer, wherein the spray washing tower is provided with the waste gas collecting pipe, and the microorganism purification tower is internally provided with the microorganism purification tower washing area, the microorganism purification tower filter material area and the demisting layer in sequence. The color-coated organic waste gas enters the spray washing tower through the waste gas collecting pipe in a centralized mode, the color-coated organic waste gas is primarily purified and cooled, humidified and neutralized in the spray washing tower, and the environment of smooth and normal metabolism of biological membranes of follow-up biological filter materials is guaranteed.
Description
Technical Field
The utility model relates to a color-coated organic waste gas treatment device.
Background
The color coating process is widely applied to the industries of steel, machinery, electrical equipment, automobiles, ships and the like. The color coating raw material consists of non-volatile components and volatile components, wherein the non-volatile components comprise a film forming substance and an auxiliary film forming substance, and the volatile components refer to a solvent and a diluent. The organic gas in the color coating waste gas comes from the volatilization of the solvent and the diluent, the organic solvent can not be attached to the surface of the component along with the coating, and the organic gas is completely released in the color coating and curing process to form the organic waste gas. In the color coating operation, the paint and the solvent are opened in a container, and a finished product is cured after coating. The formed VOCs mainly comprises 2 forms, namely, the solvent is directly volatilized to form gaseous VOCs, the coating and the solvent are attached to the surface of the component together, the coating is left on the surface of the component in the curing process, and the solvent is completely volatilized; pollute the air and affect the health of human body. The treatment of VOCs is more and more emphasized, and corresponding regulations are issued by many developed countries to limit the discharge of VOCs, which becomes a hotspot for controlling air pollution.
The prior organic waste gas treatment method mainly comprises the following steps: 1. adsorption treatment; 2. liquid absorption treatment; 3. carrying out photocatalytic oxidation treatment; 4. carrying out catalytic combustion treatment; 5. and (4) treating the microorganisms.
1. Adsorption treatment
The organic waste gas is treated by active carbon adsorption, the purification rate of the organic waste gas can reach 90-98%, the equipment is simple, the investment is low, but the active carbon is frequently replaced, the system resistance is high, the working difficulty of transportation, loading and unloading, replacement and the like is increased, the running power consumption is high, and the running cost is high. But the investment is small and the management is convenient, so that the method is still the mainstream application technology at present.
2. Liquid absorption treatment
The technology adopts low-volatility or non-volatile liquid as an absorbent, utilizes the solubility or chemical reaction characteristic difference of various components in the waste gas in the absorbent, and uses absorption equipment to absorb harmful components in the waste gas, thereby achieving the purpose of purifying the waste gas. The process is mature in technology, is suitable for treating organic gas with large flow and high concentration, is widely applied at present, but has high requirements on equipment and management, and has secondary pollution due to the fact that an absorbent needs to be replaced regularly.
3. Photocatalytic oxidation treatment
The technology is a new pollution treatment technology which is increasingly emphasized in recent years, and organic waste gas on the surface of an adsorbent is subjected to oxidation-reduction reaction by utilizing the photocatalytic activity of a catalyst under illumination with a certain wavelength. The method has the advantages of low energy consumption, simple operation, renewable and recyclable catalyst and purification capability on almost all pollutants. The method is suitable for processing small-flow organic gas, and a large-scale industrial processing system needs to be researched. In addition, because the photocatalysis is easy to generate secondary pollutants of ozone, the popularization is subject to a certain limit value.
4. Catalytic combustion process
The catalytic combustion process is carried out in a catalytic combustion unit. The organic waste gas is preheated to 280-400 ℃ through a heat exchanger and then enters a combustion chamber, and when the organic waste gas passes through a catalyst bed, VOCs molecules and oxygen molecules in mixed gas are respectively adsorbed on the surface of a catalyst to be activated. Since the surface adsorption reduces the activation energy of the reaction, VOCs and oxygen molecules are rapidly oxidized at a lower temperature to form carbon dioxide and water. The device is suitable for treating gas with small flow and high concentration, has high purification efficiency and is favored; however, the equipment is easy to corrode, consumes catalyst and fuel, has high treatment cost and high management requirement, and is limited in popularization and application.
5. Microbial treatment
Through the development of more than ten years, the technology utilizes organic biodegradation to convert organic pollutants in waste gas, and has the advantages of good treatment effect, low investment and operation cost, good safety, no secondary pollution and the like. Is suitable for treating organic gas with large flow and low concentration. At present, biological strains with strong adaptability and high degradation speed are developed successfully, and the treatment technology is popularized and widely used.
By comprehensively comparing the organic waste gas treatment methods, the biological treatment technology is a very promising technology for treating organic waste gas at the present stage, is very suitable for popularization and application, and is beneficial to the national energy-saving and emission-reduction policy of VOCs.
SUMMERY OF THE UTILITY MODEL
To the defect that above-mentioned prior art exists, the to-be-solved technical problem of the utility model is: a color-coated organic waste gas treatment device is provided.
The color-coated organic waste gas treatment device comprises a spray washing tower, a wet electrostatic decoking device, a UV photocatalytic purification device, a microbial purification tower, an induced draft fan and a chimney which are sequentially communicated through a pipeline; the device comprises a spray washing tower, a microorganism purification tower, a waste gas collecting pipe, a microorganism purification tower washing area, a microorganism purification tower filter material area and a demisting layer, wherein the spray washing tower is provided with the waste gas collecting pipe, and the microorganism purification tower is internally provided with the microorganism purification tower washing area, the microorganism purification tower filter material area and the demisting layer in sequence.
In one embodiment, the color-coated organic waste gas treatment device further comprises a microorganism culture pond, and the spray washing tower, the wet electrostatic decoking device and the microorganism purification tower are respectively communicated with the microorganism culture pond through circulation pipes, so that spray circulation water generated on the spray washing tower, the wet electrostatic decoking device and the microorganism purification tower flows into the microorganism culture pond through the circulation pipes.
In one embodiment, an air blower is arranged on one side of the microorganism culture pond, and an air outlet of the air blower is communicated with the microorganism culture pond.
In one embodiment, the color-coated organic waste gas treatment device further comprises a nutrient system, wherein the nutrient system is respectively connected with the microbial purification tower and the microbial culture pond so as to convey alkaline salt to the microbial purification tower and the microbial culture pond.
In one embodiment, the microbial purification tower is a horizontal tower.
In one embodiment, the filtering material area of the microbial purification tower is formed by volcanic rocks or spherical packing or bark stacking and elastic packing in a regular arrangement.
In one embodiment, the microorganism culture pond is respectively provided with a first sludge discharge pipe and a second pipe for returning and supplementing sludge with strains.
In one embodiment, the spray scrubber is built-in with a spray pump.
To sum up, the utility model discloses for its beneficial effect of prior art is:
the utility model has simple structure, based on the spray washing tower, the wet electrostatic decoking device, the UV photocatalytic purification device, the microorganism purification tower, the draught fan and the chimney, the color-coated organic waste gas enters the spray washing tower through the waste gas collecting pipe in a centralized way, the color-coated organic waste gas obtains preliminary purification, temperature reduction, humidification and neutralization in the spray washing tower and ensures the smooth and smooth environment of the subsequent biological filter material and the normal metabolism of the biological membrane, the color-coated organic waste gas enters the wet electrostatic decoking device through the pipe of the spray washing tower connected with the wet electrostatic decoking device, under the action of electric field load, most of the color-coated organic waste gas removes tar components in the color-coated organic waste gas and ensures the smooth and normal metabolism environment of the subsequent biological filter material and the biological membrane, the color-coated organic waste gas enters the UV photocatalytic purification device through the pipe of the wet electrostatic decoking device connected with the UV photocatalytic purification device, under the action of multi-component UV light and photocatalyst, macromolecular organic matters in waste gas are decomposed into micromolecular organic matters and ensure the smooth and smooth follow-up biological filter materials and the environment of normal metabolism of biological membranes, color-coated organic waste gas enters a washing area of a microbial purification tower through a pipe connected with a UV photocatalytic purification device and the microbial purification tower, the color-coated organic waste gas enters a filter material area of the microbial purification tower after being humidified, filter materials in the filter material area of the microbial purification tower are formed by using volcanic rocks, spherical fillers, barks and the like which are stacked and elastic fillers which are arranged in order, the waste gas rises from the bottom, enters a defogging layer after being purified in the microbial filter material area, water drops carried by the waste gas are removed, and when the color-coated organic waste gas enters an induced draft fan, the color-coated organic gas treated by the purification device is discharged into the environment through a chimney aloft.
Drawings
Fig. 1 is a schematic block diagram of an organic waste gas treatment device for color coating according to an embodiment of the present invention.
Detailed Description
The invention will be further described with reference to the following description and embodiments in conjunction with the accompanying drawings:
the color-coated organic waste gas treatment device comprises a spray washing tower 2, a wet electrostatic decoking device 3, a UV photocatalytic purification device 4, a microbial purification tower 5, an induced draft fan 6 and a chimney 7 which are sequentially communicated through a pipeline 23; wherein, be equipped with waste gas collecting pipe 1 on the spray scrubber 2, be equipped with microorganism purification tower washing zone 51, microorganism purification tower filter material district 53 and defogging layer 52 in the microorganism purification tower 5 in proper order, concretely, wet process static decoking device 3 includes wet scrubber and static decoking ware, based on spray scrubber 2, wet process static decoking device 3, UV photocatalysis purifier 4, microorganism purification tower 5, draught fan 6 and chimney 7, the colored coating organic waste gas concentrates the entering spray scrubber 2 through waste gas collecting pipe 1, the colored coating organic waste gas obtains preliminary purification and cooling, humidification, neutralization and guarantee the smooth and easy and normal metabolism's of biomembrane of follow-up biological filter material environment in spray scrubber 2, the colored coating organic waste gas passes through the pipe that spray scrubber 2 and wet process static decoking device 3 are connected and gets into wet process static decoking device 3, under the action of electric field load, most of tar components in the color-coated organic waste gas are removed, the smooth and normal metabolism environment of a subsequent biological filter material and a biological membrane are guaranteed, the color-coated organic waste gas enters the UV photocatalytic purification device 4 through a pipe connected with the wet electrostatic decoking device 3 and the UV photocatalytic purification device 4, macromolecular organic matters in the waste gas are decomposed into micromolecular organic matters under the action of multi-component UV light and photocatalyst, the smooth and normal metabolism environment of the subsequent biological filter material and the biological membrane is guaranteed, the color-coated organic waste gas enters a washing area 51 of the microbial purification tower through a pipe connected with the UV photocatalytic purification device 4 and a microbial purification tower 5, the color-coated organic waste gas enters a filtering material area 53 of the microbial purification tower after being humidified, and the filtering material passing through the filtering material area 53 of the microbial purification tower is formed by using volcanic rock, spherical filler, bark and the like and the elastic filler in a neat layout, the waste gas rises from the bottom, enters the demisting layer 52 after being purified by the microorganism filtering material area, water drops carried by the waste gas are removed, when the color-coated organic waste gas enters the induced draft fan 6, the color-coated organic gas treated by the purification device is discharged into the environment at high altitude through the chimney 7 by utilizing the induced draft fan 6.
The color-coated organic waste gas treatment device further comprises a microorganism culture pond 8, the spray washing tower 2, the wet electrostatic decoking device 3 and the microorganism purification tower 5 are respectively communicated with the microorganism culture pond 8 through a circulating pipe 22, so that spray circulating water generated on the spray washing tower 2, the wet electrostatic decoking device 3 and the microorganism purification tower 5 flows into the microorganism culture pond 8 through the circulating pipe 22, specifically, the circulating water is purified in the microorganism culture pond 8, microorganisms in the spray washing tower 2, the wet electrostatic decoking device 3 and the microorganism purification tower 5 take organic pollutants in the circulating water as metabolic nutrient components and continuously reproduce and metabolize, the circulating water automatically flows back to the spray washing tower 2 and the microorganism purification tower 5 for cyclic utilization, and the maximum repeated use and the best possible self-sufficiency of spray water and self-supported strains in the system are realized.
The microorganism culture pond 8 one side is equipped with air-blower 10, the air outlet of air-blower 10 with microorganism culture pond 8 intercommunication, specifically, air-blower 10 extracts the air and sends to in microorganism purification tower 5 and the microorganism culture pond 8, provides the oxygen that metabolism needs for specially belonging to aerobic microorganism.
The color-coated organic waste gas treatment device further comprises a nutrient agent system 9, wherein the nutrient agent system 9 is respectively connected with the microorganism purification tower 5 and the microorganism culture pond 8 so as to convey alkaline salt to the microorganism purification tower 5 and the microorganism culture pond 8, specifically, the nutrient agent system 9 extracts the alkaline salt according to the requirement and sends the alkaline salt to the spray washing tower 2 and the microorganism purification tower 5, and the pretreatment effect of the spray washing tower 2 and the pH value required by the survival of microorganisms in the microorganism purification tower 5 are kept; meanwhile, the nutrient solution is periodically supplemented to the microorganisms in the microorganism purification tower 5.
The microorganism purification tower 5 adopts a horizontal tower, and particularly, the horizontal tower has the advantages of high load, low pressure drop, difficulty in blockage, wide elasticity and the like, provides sufficient microorganism amount and has high organic pollutant purification efficiency.
The filtering material area 53 of the microbial purification tower is formed by stacking volcanic rocks or spherical fillers or barks and arranging elastic fillers in order.
The microorganism culture pond 8 is respectively provided with a first sludge discharge pipe 82 and a second pipe 83 for refluxing and supplementing the sludge with the strains, and particularly, the microorganism culture pond 8 periodically discharges the sludge and periodically refluxes and supplements the sludge with the strains to a circulating pond of a microorganism purification tower through the first pipe 82 and the second pipe 83 respectively, so that the maximum reuse of spray water and the strains of the system is realized, and the system is self-sufficient as far as possible.
The spray washing tower 2 is internally provided with a spray pump 21 so as to lead the circulating water to be repeatedly used for spray washing.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above, and it should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only illustrative of the principles of the present invention, and the present invention can be modified in various ways without departing from the spirit and scope of the present invention, and these modifications and changes fall into the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. Color-coated organic waste gas treatment device, its characterized in that: comprises a spray washing tower (2), a wet electrostatic decoking device (3), a UV photocatalytic purification device (4), a microbial purification tower (5), an induced draft fan (6) and a chimney (7) which are communicated with each other through a pipeline (23); the device is characterized in that a waste gas collecting pipe (1) is arranged on the spray washing tower (2), and a microbial purification tower washing area (51), a microbial purification tower filter material area (53) and a demisting layer (52) are sequentially arranged in the microbial purification tower (5).
2. The color-coated organic waste gas treatment device according to claim 1, wherein: the color-coated organic waste gas treatment device further comprises a microorganism culture pond (8), and the spray washing tower (2), the wet electrostatic decoking device (3) and the microorganism purification tower (5) are communicated with each other through a circulating pipe (22) and the microorganism culture pond (8) respectively, so that spray circulating water generated on the spray washing tower (2), the wet electrostatic decoking device (3) and the microorganism purification tower (5) flows into the microorganism culture pond (8) through the circulating pipe (22).
3. The color-coated organic waste gas treatment device according to claim 2, wherein: an air blower (10) is arranged on one side of the microorganism culture pond (8), and an air outlet of the air blower (10) is communicated with the microorganism culture pond (8).
4. The color-coated organic waste gas treatment device according to any one of claims 1 to 3, wherein: the color-coating organic waste gas treatment device further comprises a nutrient agent system (9), wherein the nutrient agent system (9) is respectively connected with the microorganism purification tower (5) and the microorganism culture pond (8) so as to convey alkaline salt to the microorganism purification tower (5) and the microorganism culture pond (8).
5. The color-coated organic waste gas treatment device according to claim 4, wherein: the microorganism purification tower (5) adopts a horizontal tower.
6. The color-coated organic waste gas treatment device according to claim 4, wherein: the filtering material area (53) of the microbial purification tower is formed by stacking volcanic rocks or spherical fillers or barks and arranging elastic fillers in order.
7. The color-coated organic waste gas treatment device according to claim 2, wherein: the microorganism culture pond (8) is respectively provided with a first sludge discharge pipe (82) and a second pipe (83) for refluxing and supplementing the sludge with the strains.
8. The color-coated organic waste gas treatment device according to claim 2, wherein: the spray washing tower (2) is internally provided with a spray pump (21).
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| CN202021640675.XU CN214182369U (en) | 2020-08-07 | 2020-08-07 | Color-coated organic waste gas treatment device |
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| CN202021640675.XU CN214182369U (en) | 2020-08-07 | 2020-08-07 | Color-coated organic waste gas treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113975961A (en) * | 2021-10-15 | 2022-01-28 | 广东思索环保发展有限公司 | Comprehensive treatment system for waste gas in coating industry |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113975961A (en) * | 2021-10-15 | 2022-01-28 | 广东思索环保发展有限公司 | Comprehensive treatment system for waste gas in coating industry |
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