CN212492325U - Novel VOCs exhaust-gas treatment device - Google Patents
Novel VOCs exhaust-gas treatment device Download PDFInfo
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- CN212492325U CN212492325U CN202021084733.5U CN202021084733U CN212492325U CN 212492325 U CN212492325 U CN 212492325U CN 202021084733 U CN202021084733 U CN 202021084733U CN 212492325 U CN212492325 U CN 212492325U
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Abstract
The utility model provides a novel VOCs waste gas treatment device, which comprises a cylindrical cavity reaction tower, wherein the cylindrical cavity reaction tower internally comprises an alkali liquor absorption layer, a photocatalysis layer, an adsorption layer and a demisting layer; a spray pipeline is arranged at the top of the alkali liquor absorption layer, and a nozzle with a downward nozzle is arranged on the spray pipeline; the photocatalytic layer comprises a photocatalytic plate and a light source, and an ozone generator is connected to the outer side of the photocatalytic layer; the adsorption layer comprises a screen plate and an adsorbent; the alkali lye absorbed layer sets up through the top the nozzle carries out neutralization degradation to the VOCs waste gas that just got into the reaction tower, the photocatalysis layer outside is connected with the ozone generater, can constantly produce ozone, and ozone and ultraviolet ray can oxidize VOCs waste gas jointly, can not the polluted environment, the otter board can with attaching to of adsorbent above, when VOCs waste gas passes through, can play absorbent effect to waste gas.
Description
Technical Field
The utility model relates to an exhaust-gas treatment technical field especially relates to a VOCs exhaust treatment device.
Background
In the processes of wastewater treatment of industrial enterprises and sewage treatment of municipal industry, garbage transfer stations and landfill, odorous gas containing a large amount of Volatile Organic Compounds (VOCs) can be generated, the VOCs waste gas is extremely complex, common hydrocarbons, aldehydes, benzenes, chlorohydrocarbons, naphthalene, diisocyanates and the like have foul odor, show toxicity and irritation in different degrees, and some compounds have genotoxicity and cause great influence on the living environment of surrounding animals, plants and human beings, so that the purification of the VOCS waste gas is very important for environmental protection.
The domestic VOC treatment equipment mainly adopts a heat accumulation combustion method and a catalytic oxidation method, needs high-temperature treatment, has great risk, is easy to generate secondary pollution, has high energy consumption, is easy to be limited by the concentration and the temperature of organic waste gas, has the defects of incomplete waste gas treatment and the like, and has higher input cost. Therefore, it is necessary to provide a new technology and process for treating VOCs with high treatment efficiency and low cost to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model aims at providing a novel VOCs exhaust-gas treatment device to solve the problem that proposes in the above-mentioned background art.
The purpose of the utility model is realized by adopting the following technical scheme:
the utility model provides a novel VOCs waste gas treatment device, which comprises a cylindrical cavity reaction tower, wherein one side of the cylindrical cavity reaction tower is provided with an air inlet, the top of the cylindrical cavity reaction tower is provided with an air outlet, the cylindrical cavity reaction tower internally comprises an alkali liquor absorption layer, a photocatalysis layer, an adsorption layer and a demisting layer, VOCs waste gas flows in low-in and high-out directions and sequentially passes through the alkali liquor absorption layer, the photocatalysis layer, the adsorption layer and the demisting layer; a spray pipeline is arranged at the top of the alkali liquor absorption layer, and a nozzle with a downward nozzle is arranged on the spray pipeline; the photocatalytic layer comprises a photocatalytic plate and a light source, the light source is used for providing ultraviolet light for the photocatalytic plate, and the ozone generator is connected to the outer side of the photocatalytic layer; the adsorption layer comprises a screen plate and an adsorbent.
Beneficially or exemplarily, the top of the cylindrical cavity reaction tower is provided with an induced draft fan which can provide a full negative pressure environment and provide power for circulation.
Advantageously or exemplarily, the adsorbent is attached to the mesh sheet, and the adsorbent is fibrous activated carbon.
Advantageously or exemplarily, the demister layer is provided with a swash plate, swirl plate, centrifugal or wire mesh demister.
Advantageously or exemplarily, a liquid storage tank and a circulating pump are arranged at the bottom of the lye absorption layer, and the spraying pipeline is connected with the circulating pump.
Advantageously or exemplarily, the solvent of the reservoir is a basic organic absorbent.
Beneficially or exemplarily, the top of the lye absorption layer is provided with an access opening.
The utility model has the advantages that:
the utility model provides a novel VOCs exhaust-gas treatment device, the alkali lye absorbed layer passes through the top setting the nozzle carries out neutralization degradation to the VOCs waste gas that just gets into the reaction tower, passes through after the alkali lye absorbed layer preliminary purification, VOCs waste gas lets in among the photocatalysis layer, the photocatalysis layer outside is connected with the ozone generater, can constantly produce ozone, and ozone and ultraviolet ray can oxidize VOCs waste gas jointly, and ozone produces OH under the excitation of ultraviolet ray, further oxidizes the organic matter in the waste gas, turns into nontoxic harmless CO with the organic matter2And H2O, ozone self is reduced to oxygen, discharges and also can not the polluted environment to the external world, the otter board can with attaching to of adsorbent above, when VOCs waste gas passes through, can play absorbent effect to waste gas.
Drawings
The present invention is further explained by using the drawings, but the embodiments in the drawings do not constitute any limitation to the present invention, and for those skilled in the art, other drawings can be obtained according to the following drawings without any inventive work.
Fig. 1 is a schematic structural diagram of a novel VOCs exhaust treatment device according to an exemplary embodiment of the present invention;
reference numerals: 1-a cylindrical cavity reaction tower; 2-an air inlet; 3-air outlet; 4-an alkali liquor absorbing layer; 5-a photocatalytic layer; 6-an adsorption layer; 7-demisting layer; 8-a spray pipeline; 9-a nozzle; 10-a photocatalytic plate; 11-a light source; 12-an ozone generator; 13-a screen plate; 14-a draught fan; 15-a demister; 16-a liquid storage tank; 17-a circulation pump; and 18-service hole.
Detailed Description
The invention will be further described with reference to the following examples.
Referring to fig. 1, the utility model provides a novel VOCs waste gas treatment device, including cylindrical cavity reaction tower 1, cylindrical cavity reaction tower 1 one side is provided with air inlet 2, cylindrical cavity reaction tower 1 top is provided with gas outlet 3, cylindrical cavity reaction tower 1 is inside to include alkali lye absorbing layer 4, photocatalysis layer 5, adsorbed layer 6 and defogging layer 7, VOCs waste gas flow direction is low-in and high-out, pass through alkali lye absorbing layer 4, photocatalysis layer 5, adsorbed layer 6 and defogging layer 7 in proper order; a spray pipeline 8 is arranged at the top of the alkali liquor absorption layer 4, and a nozzle 9 with a downward nozzle is arranged on the spray pipeline 8; the photocatalytic layer 5 comprises a photocatalytic plate 10 and a light source 11, the light source 11 is used for providing ultraviolet light for the photocatalytic plate 10, and an ozone generator 12 is connected to the outer side of the photocatalytic layer 5; the adsorption layer 6 comprises a screen 13 and an adsorbent.
This best modeEmbodiment, the alkali liquor absorbed layer 4 sets up through the top nozzle 9 carries out neutralization degradation to the VOCs waste gas that just got into the reaction tower, passes through after the preliminary purification of alkali liquor absorbed layer 4, VOCs waste gas lets in among the photocatalysis layer 5, the photocatalysis layer 5 outside is connected with ozone generator 12 can constantly produce ozone, and ozone and ultraviolet ray can jointly oxidize VOCs waste gas, and ozone produces OH under the excitation of ultraviolet ray, further oxidizes the organic matter in the waste gas, turns into nontoxic harmless CO with the organic matter2And H2O, ozone self is reduced to oxygen, discharges and also can not the polluted environment to the external world, otter board 13 can with attaching to of adsorbent above, when VOCs waste gas passes through, can play absorbent effect to waste gas.
According to a preferred embodiment of the invention, the top of the cylindrical cavity reaction tower 1 is provided with an induced draft fan 14 which can provide a full negative pressure environment and provide power for circulation.
This preferred embodiment, draught fan 14 can accelerate the suction of VOCs waste gas, improves the work efficiency of reaction tower, accomplishes the purification back when VOCs waste gas, draught fan 14 can discharge VOCs waste gas to the external world from the reaction tower.
According to a preferred embodiment of the present invention, the adsorbent is attached to the mesh plate, and the adsorbent is fibrous activated carbon.
In the preferred embodiment, the mesh plate 13 can effectively prevent the loss of the adsorbent, the mesh size of the mesh plate 13 can be determined according to the particle size of the adsorbent, the adsorbent is fiber activated carbon and can be used for adsorbing organic pollutants which are not oxidized and decomposed, and the organic pollutants can be oxidized and decomposed into nontoxic and harmless H in the reaction process2O and CO2And simultaneously the activated carbon is regenerated.
According to a preferred embodiment of the invention, the demister layer 7 is provided with a swash plate, swirl plate, centrifugal or wire mesh demister 15.
In the preferred embodiment, the demisting layer 7 is mainly used for intercepting micro droplets contained in the treated exhaust gas and discharging the gas after removing water mist from the gas.
According to a preferred embodiment of the present invention, the bottom of the lye absorption layer 4 is provided with a liquid storage tank 16 and a circulating pump 17, and the spraying pipe 8 is connected with the circulating pump 17.
In one implementation under this preferred embodiment, the solvent of the reservoir 16 is an alkaline organic absorbent.
In the preferred embodiment, the alkaline organic absorbent can effectively neutralize the acid gas in the VOCs waste gas, and the alkaline organic absorbent is extracted from the liquid storage tank 16 through the circulating pump 17 to serve as a spraying section water source, so that the adsorption rate of the alkaline organic absorbent can be improved, and the cost is effectively saved.
According to a preferred embodiment of the present invention, the top of the lye absorption layers 4 is provided with an access opening 18.
In the preferred embodiment, the access opening 18 is arranged to be used as a passage for accessing components in the reaction tower.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. A novel VOCs waste gas treatment device comprises a cylindrical cavity reaction tower and is characterized in that an air inlet is formed in one side of the cylindrical cavity reaction tower, an air outlet is formed in the top of the cylindrical cavity reaction tower, an alkali liquor absorption layer, a photocatalytic layer, an adsorption layer and a demisting layer are arranged in the cylindrical cavity reaction tower, VOCs waste gas flows in a low-inlet and high-outlet mode and sequentially passes through the alkali liquor absorption layer, the photocatalytic layer, the adsorption layer and the demisting layer; a spray pipeline is arranged at the top of the alkali liquor absorption layer, and a nozzle with a downward nozzle is arranged on the spray pipeline; the photocatalytic layer comprises a photocatalytic plate and a light source, the light source is used for providing ultraviolet light for the photocatalytic plate, and the ozone generator is connected to the outer side of the photocatalytic layer; the adsorption layer comprises a screen plate and an adsorbent.
2. A novel waste gas treatment device for VOCs as claimed in claim 1, wherein an induced draft fan is installed at the top of the cylindrical hollow reaction tower to provide a full negative pressure environment and power for circulation.
3. A novel exhaust treatment device for VOCs as claimed in claim 1, wherein said adsorbent is attached to said mesh plate, and said adsorbent is fibrous activated carbon.
4. A novel waste gas treatment device for VOCs as claimed in claim 1, wherein said demister layer is provided with a swash plate type, swirl plate type, centrifugal type or wire mesh type demister.
5. A novel VOCs waste gas treatment device as claimed in claim 1, wherein a liquid storage tank and a circulating pump are arranged at the bottom of the alkali liquor absorption layer, and the spraying pipeline is connected with the circulating pump.
6. A novel waste gas treatment device for VOCs according to claim 5, wherein the solvent of the reservoir is an alkaline organic absorbent.
7. A novel VOCs waste gas treatment device as claimed in claim 1, wherein the top of the lye absorption layer is provided with an access hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021084733.5U CN212492325U (en) | 2020-06-12 | 2020-06-12 | Novel VOCs exhaust-gas treatment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021084733.5U CN212492325U (en) | 2020-06-12 | 2020-06-12 | Novel VOCs exhaust-gas treatment device |
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| CN212492325U true CN212492325U (en) | 2021-02-09 |
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| CN202021084733.5U Active CN212492325U (en) | 2020-06-12 | 2020-06-12 | Novel VOCs exhaust-gas treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114849468A (en) * | 2022-05-28 | 2022-08-05 | 南京沿江资源生态科学研究院有限公司 | Negative pressure collecting and processing and nanometer superoxide catalytic treatment system for chemical laboratory |
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2020
- 2020-06-12 CN CN202021084733.5U patent/CN212492325U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114849468A (en) * | 2022-05-28 | 2022-08-05 | 南京沿江资源生态科学研究院有限公司 | Negative pressure collecting and processing and nanometer superoxide catalytic treatment system for chemical laboratory |
| CN114849468B (en) * | 2022-05-28 | 2023-08-29 | 南京沿江资源生态科学研究院有限公司 | Negative pressure collecting and treating and nano super-oxygen catalytic treating system for chemical laboratory |
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