CN210544375U

CN210544375U - VOC gas purification and reuse device

Info

Publication number: CN210544375U
Application number: CN201920840679.3U
Authority: CN
Inventors: 林勤鑫; 林勤滨; 林凯
Original assignee: Shantou Xinxintai Machinery Equipment Co ltd
Current assignee: Guangdong Hexuan environmental protection intelligent technology Co., Ltd
Priority date: 2019-06-04
Filing date: 2019-06-04
Publication date: 2020-05-19
Anticipated expiration: 2029-06-04

Abstract

The utility model provides a VOC gas purifies recycles device relates to VOC gas treatment technical field, has solved the technical problem who does not carry out the resourceful recycle to the VOC gas after administering. The device comprises a pipeline, a collecting assembly, a purifying assembly, a recycling assembly and power equipment; the pipeline can pass VOC gas; the VOC gas enters the collection assembly after being discharged; the collection assembly is capable of dedusting the VOC gas and reducing the temperature and concentration of the VOC gas; the purification component carries out primary purification on the VOC gas through a recovery and/or decomposition technology; the recycling assembly compresses and purifies the VOC gas for the second time, the compressed VOC is stored, and the stored compressed VOC gas provides power for the power equipment. The utility model discloses the VOC gas after will handling directly uses as power after compressing and storing, has realized the resourceful reuse to the VOC gas.

Description

VOC gas purification and reuse device

Technical Field

The utility model belongs to the technical field of the gaseous processing technique of VOC and specifically relates to a VOC gas purification recycles device is related to.

Background

The volatile organic compound is called VOC for short, and generally refers to an organic compound which has high saturated vapor pressure (more than or equal to 0.01KPa at 20 ℃), low boiling point, small molecular weight and is volatile at normal temperature. The photochemical smog, the secondary organic aerosol and the atmospheric organic acid are increased, the ozone layer can be damaged, the important reason of haze formation is realized, and certain toxicity, irritation and carcinogenicity are also shown, so that the great influence is caused on the human health.

Along with the gradual improvement of living standard, people pay more and more attention to the air quality, and the emission of VOC gas is also paid more and more attention. For example, the action plan of three years of guard war in blue sky won by the state department in 2018 proposes to control the emission of VOC energetically, and the treatment to the emission of VOC is stricter. Thus, various technologies for purifying VOC gas have been developed, and generally, the VOC gas is treated at the end, for example, by a thermal destruction method, a pressure swing adsorption separation and purification technology, an adsorption method, an oxidation treatment method, and the like, to recover or decompose the VOC gas.

The applicant has found that the prior art has at least the following technical problems:

in the existing VOC gas treatment technology, treated VOC gas still needs to be discharged into the atmosphere, although the VOC concentration is reduced, air pollution to a certain degree still can be caused, and the treated VOC gas is not recycled.

Disclosure of Invention

An object of the utility model is to provide a VOC gas purifies recycler to the VOC gas treatment who exists among the solution prior art still can cause certain degree of atmospheric pollution, also does not have the VOC gas after administering to carry out the resourceization technical problem of recycling. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a VOC gas purification and reuse device, which comprises a pipeline, a collection component, a purification component, a reuse component and power equipment; the pipeline can be used for communicating the collection assembly, the purification assembly and the reuse assembly through VOC gas; the collecting assembly is connected with VOC gas discharging equipment through the pipeline, and the VOC gas enters the collecting assembly after being discharged; the collection assembly is capable of dedusting the VOC gas and reducing the temperature and concentration of the VOC gas; the purification component carries out primary purification on the VOC gas through a recovery and/or decomposition technology; the recycling assembly compresses and purifies the VOC gas for the second time, the compressed VOC is stored, and the stored compressed VOC gas provides power for the power equipment.

Optionally, the collecting assembly comprises a spray tower, a desalination device and a first heat exchanger, the spray tower, the desalination device and the first heat exchanger are sequentially connected by the pipeline, the VOC gas sequentially passes through the spray tower, the desalination device and the first heat exchanger, and the first heat exchanger is connected with the purifying assembly by the pipeline.

Optionally, the spray tower comprises a water collecting area, a dust removing area, a gas collecting area, a water tank, a water supply pipe and a water baffle; the cross section of the water collecting area is arc-shaped and is arranged at the bottom of the spray tower, the dust removing area is arranged in the middle of the spray tower, and the cross section of the gas collecting area is arc-shaped and is arranged at the top of the spray tower; the water supply pipe can spray water in the water tank in the dust removing area through atomization; the water baffle is arranged between the dust removal area and the gas collection area, and a plurality of air holes are formed in the water baffle to allow the VOC gas to pass through; and the VOC gas enters the spray tower from the dust removal area through a pipeline and is discharged out of the spray tower from the gas collection area through the pipeline.

Optionally, purify the subassembly and include gas mixing box, clarification plant, first buffer tank and static eliminator, the gas mixing box the clarification plant first buffer tank with the static eliminator passes through the pipeline connects gradually, VOC gas passes through in order the gas mixing box the clarification plant first buffer tank with the static eliminator, the gas mixing box with first heat exchanger is connected, the static eliminator passes through the pipeline with the subassembly of recycling is connected.

Optionally, the first buffer tank is capable of rotating and is connected at the bottom with a waste liquid tank through a first connecting pipe.

Optionally, the purification device comprises an activated carbon filter box, an electrostatic adsorber, a photocatalyst and a plasma reactor; the activated carbon filter box, the electrostatic adsorber, the photocatalyst and the plasma reactor are sequentially connected in sequence from front to back through the pipeline; the activated carbon filter box and the electrostatic adsorber purify the VOC gas through a recovery technology; the photocatalyst and the plasma reactor purify the VOC gas through a decomposition technology.

Optionally, the recycling assembly comprises an air compressor, a secondary cleaning device and an air storage tank; the air compressor passes through the pipeline with the static eliminator is connected, air compressor, secondary purification equipment with the gas holder passes through the pipeline connects gradually.

Optionally, the second cleaning device comprises a dust filter, an oil filter and an activated carbon filter, and the pipeline sequentially communicates the dust filter, the oil filter and the activated carbon filter.

Optionally, the recycling assembly further includes a second heat exchanger and a second buffer tank, the second heat exchanger is connected to the air compressor through the pipeline, the second buffer tank is connected to the second heat exchanger through the pipeline, and the VOC gas can sequentially enter the second heat exchanger and the second buffer tank.

Optionally, the gas storage tank and the second buffer tank are communicated with each other through a second connecting pipe, and a liquid storage tank is connected to the second connecting pipe, and the liquid storage tank collects liquid generated by the gas storage tank and the second buffer tank.

Any technical scheme can at least produce the following technical effects:

the utility model discloses a VOC gas purifies recycles device directly uses as power after compressing the VOC gas after will handling and storing, in not directly discharging into the atmosphere, has realized the resourceful recycle to the VOC gas.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a VOC gas purification and reuse apparatus;

FIG. 2 is a schematic view of a collection assembly;

FIG. 3 is a schematic view of a purification assembly;

fig. 4 is a schematic diagram of a reuse assembly.

100, VOC gas emission equipment; 200. a pipeline; 210. a first fan; 220. a first check valve; 230. a second one-way valve; 240. a third check valve; 300. a collection assembly; 310. a spray tower; 311. a water collection area; 312. a dust removal area; 313. a gas collection zone; 314. a water tank; 315. a water supply pipe; 316. a water baffle; 317. a water collection pipe; 318. a shower head; 320. desalting equipment; 330. a first heat exchanger; 400. a purification assembly; 410. a gas mixing box; 411. a second fan; 420. a purification device; 421. an activated carbon filter box; 422. an electrostatic adsorber; 423. a photocatalyst; 424. a plasma reactor; 430. a first buffer tank; 431. a first connecting pipe; 432. a waste liquid tank; 440. a static eliminator; 500. a reuse assembly; 510. an air compressor; 520. a second purifying device; 521. a dust filter; 522. an oil filter; 523. an activated carbon filter; 524. an adsorption dryer; 530. a gas storage tank; 531. a second connecting pipe; 532. a liquid storage tank; 533. an oil-water separator; 540. a second heat exchanger; 550. a second buffer tank; 600. a power plant.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The utility model provides a VOC gas purifies recycles device, including pipeline 200, collection subassembly 300, purification subassembly 400, recycle subassembly 500 and power equipment 600. The VOC gas can pass through the duct 200, and the material of the duct 200 is selected from metal or plastic as required. The pipe 200 communicates the collection module 300, the purification module 400, and the reuse module 500, and the VOC gas can pass through the collection module 300, the purification module 400, and the reuse module 500 in this order. The collection assembly 300 is connected with the VOC gas discharging apparatus 100 through the pipeline 200, the VOC gas discharging apparatus 100 is generally installed in a factory which easily generates VOC gas, such as a factory for painting, printing, pharmacy, plastics and rubber processing, the collection assembly 300 is directly connected with the VOC gas discharging apparatus 100 to prevent the VOC gas from directly discharging into the air to cause environmental pollution, the collection of the VOC gas is also realized, and the VOC gas enters the collection assembly 300 after being discharged. Collect subassembly 300 and can remove dust to the VOC gas to reduce the gaseous temperature and the concentration of VOC, to the follow-up purification treatment of being convenient for after the VOC gas removes dust, take place burning and explosion easily when VOC gas concentration or high temperature, reduce the gaseous temperature of VOC and concentration can eliminate the potential safety hazard in the VOC gas collection process. Purification assembly 400 purifies the VOC gas for the first time through retrieving and/or decomposing the technique, and retrieving and decomposing the technique are the mainstream means of purifying the VOC gas, combine two kinds of technical means can further improve the purifying effect of VOC gas. Reuse subassembly 500 compresses and purifies the VOC gas for the second time to store the VOC after compressing, the VOC gas after the compression just can regard as power to use, has become the power supply of storage energy, and the VOC gas after the compression of storage provides power for power equipment 600. Meanwhile, higher demands are made on the purification of the VOC gas as a power use, and therefore, the further purification of the VOC gas by the second purification satisfies the use requirements of the power plant 600. The power equipment 600 can be a cylinder, a gas motor and the like, is widely applied to various industries such as the electronic industry, the automobile spraying industry, the electric power industry, the pharmaceutical industry and the like, and has the advantages of good working environment adaptability, rapid pneumatic action, convenient adjustment and convenient realization of automatic control. The VOC gas purification recycling device directly uses as power after compressing and storing the treated VOC gas, carries out deep purification on the VOC gas, does not directly discharge into the atmosphere, and realizes recycling of the VOC gas.

As an alternative embodiment, the collection assembly 300 includes a spray tower 310, a desalination device 320 and a first heat exchanger 330, the pipeline 200 connects the spray tower 310, the desalination device 320 and the first heat exchanger 330 in sequence, the VOC gas passes through the spray tower 310, the desalination device 320 and the first heat exchanger 330 in sequence, and the first heat exchanger 330 is connected with the purification assembly 400 through the pipeline 200. When the spray tower 310 is connected with the VOC gas emission device 100 through the pipeline 200, the first check valve 220 and the first fan 210 are also connected on the pipeline 200 in sequence, the first check valve 220 can prevent the backflow of the VOC gas from entering the VOC gas emission device 100, and the first fan 210 is convenient for blowing the VOC gas into the spray tower 310 quickly. Spray tower 200 removes dust and cools down the VOC gas through blowout atomizing water droplet, and desalination equipment 320 sneaks into fresh air to the concentration of VOC gas in order to reduce the VOC gas through equipment such as draught fan, and first heat exchanger 330 further reduces the temperature of VOC gas through the refrigerant heat transfer, has guaranteed the safety of VOC gas purification recycling device through removing dust, concentration reduction and cooling. The spray tower 310 includes a water collecting region 311, a dust removing region 312, a gas collecting region 313, a water tank 314, a water supply pipe 315, and a water guard 316. The water tank 314 is arranged outside the spray tower 310, is communicated with the spray tower 310 through a water supply pipe 315, and is also communicated with the bottom of the spray tower 310 through a water collecting pipe 317 so as to collect water in the spray tower 310, and the connection mode is preferably bolt connection or flange connection. The cross section of the water collecting area 311 is arc-shaped and is arranged at the bottom of the spray tower 310, the arc-shaped structure is convenient for collecting water generated after spraying, and meanwhile, the water in the spray tower 310 is convenient for recycling through the water collecting pipe 317. The dust removal area 312 is disposed in the middle of the spray tower 310, which facilitates the VOC gas to be sufficiently contacted with the water mist, thereby capturing particulate matter in the VOC gas. The gas collection area 313 is arc-shaped in cross-section and is disposed at the top of the spray tower 310, and the arc-shaped structure facilitates the collection of the VOC gas to be discharged out of the spray tower 310. The water supply pipe 315 is also connected to a shower head 318, and the water in the water tank 314 can be sprayed out in the dust removal area 312 by atomization through the water supply pipe 315 via the shower head 318. The water baffle 316 is disposed between the dust collection area 312 and the gas collection area 313, and is preferably made of plastic or stainless steel and is engaged with the inside of the spray tower 310. Part of the water mist generated in the dedusting area 312 will continue to rise in the spray tower 310, and the water baffle 316 can prevent some water mist from continuing to rise into the gas collecting area 313, so as to prevent the VOC gas discharged from the spray tower 200 from having too high humidity. The water guard 316 has a plurality of air holes through which the VOC gas can pass, so that part of the mist is blocked to form water droplets and fall to the water collecting area 311 of the spray tower 310. The VOC gas enters the spray tower 310 from the dedusting area 312 through the pipe 200, the connecting position of the pipe 200 and the inlet of the spray tower 310 is preferably a position close to the water collecting area 311 below the dedusting area 312, so that the VOC gas can be fully contacted with the water mist in the rising process, and the connecting mode is preferably flange connection. The VOC gas is discharged from the gas collecting area 313 out of the spray tower 310 through the pipeline 200, the connecting position of the pipeline 200 and the outlet of the spray tower 310 is preferably the top of the gas collecting area 313, so that the VOC gas can be discharged in a centralized manner, and the connecting mode is preferably flange connection.

As an alternative embodiment, the purification assembly 400 includes a gas mixing box 410, a purification apparatus 420, a first buffer tank 430, and a static eliminator 440, the gas mixing box 410, the purification apparatus 420, the first buffer tank 430, and the static eliminator 440 are sequentially connected through a pipe 200, the VOC gas sequentially passes through the gas mixing box 410, the purification apparatus 420, the first buffer tank 430, and the static eliminator 440, the gas mixing box 410 is connected to the first heat exchanger 330, and the static eliminator 440 is connected to the reuse assembly 500 through a pipe 200. Gas mixing box 410 passes through pipeline 200 and first heat exchanger 330 bolted connection or flange joint, and the gaseous leading-in gas mixing box 410 of VOC after with the heat transfer, gas mixing box 410 has reduced the concentration of pending VOC gas through mixing in the VOC gas after the heat transfer, and the fresh air that mixes can increase the velocity of flow through second fan 411 to the VOC gas passes through in clarification plant 420, also is convenient for the VOC gas to get into from first heat exchanger 330. When the VOC gas passes through the purification apparatus 420, there is a large amount of static electricity in the VOC gas, and the static eliminator 440 can eliminate the static electricity to the passing VOC gas, so that the treatment process is safer. The first buffer tank 430 is rotatable, and a waste liquid tank 432 is connected to the bottom thereof through a first connection pipe 431. When the VOC gas passes through the purification apparatus 420, carbon dioxide and water are generated by decomposition, the first buffer tank 430 separates the waste liquid composed of gas and liquid such as water in the VOC gas from the gas by centrifugal force generated by rotation, and the waste liquid gradually flows into the bottom from the inner wall of the first buffer tank 430. The first buffer tank 430 is communicated with the waste liquid tank 432 through a first connecting pipe 431, the first connecting pipe 431 is connected with the bottom of the first buffer tank 430 through a flange or a bolt, and the highest height of the waste liquid tank 432 is preferably lower than the lowest height of the first buffer tank 430, so that the waste liquid of the first buffer tank 430 can automatically flow in under the action of gravity. The liquid in the treated VOC gas is separated by the first buffer tank 430, and the humidity of the VOC gas is also reduced.

As an alternative embodiment, the purification apparatus 420 includes an activated carbon filter box 421, an electrostatic adsorber 422, a photocatalyst 423, and a plasma reactor 424; the activated carbon filter box 421, the electrostatic adsorber 422, the photocatalyst 423 and the plasma reactor 424 are connected in sequence from front to back through the pipeline 200; the activated carbon filter box 421 and the electrostatic absorber 422 purify the VOC gas through a recovery technology; the photocatalyst 423 and the plasma reactor 424 purify the VOC gas by decomposition technique. Activated carbon filter box 421 passes through pipeline 200 with gas mixing case 410 and is connected, and activated carbon filter box 421 sets up network structure inside and packs the active carbon into the net, and network structure is convenient for the VOC gas to pass through and can make the VOC gas fully contact with the active carbon simultaneously. The activated carbon filter box 421 adopts an adsorption technology in a VOC recovery technology, organic molecules are intercepted by a porous structure of activated carbon, when VOC gas passes through the activated carbon filter box 421, the organic substances are adsorbed in activated carbon pores, and meanwhile, part of dust mixed into fresh air and the like can also be adsorbed, so that the VOC gas is purified. The electrostatic adsorber 422 adopts an adsorption technology in a VOC recovery technology, so that the particles in the VOC gas are retained, and the content of the particles in the VOC gas is reduced. The photocatalyst 423 and the plasma reactor 424 treat the VOC gas through the VOC decomposition technology, and both the photocatalyst 423 and the plasma reactor 434 can oxidize and degrade the VOC gas.

In an alternative embodiment, the reuse assembly 500 includes an air compressor 510, a secondary cleaning device 520, and an air reservoir 530. Air compressor 510 is connected with electrostatic eliminator 440 through pipeline 200, air compressor 510, secondary clarification plant 520 and gas holder 530 connect gradually through pipeline 200, air compressor 510 compresses the VOC gas, secondary clarification plant 520 carries out the secondary to the VOC gas after the compression, further reduces the content of pollutant in the VOC gas, gas holder 530 is connected with power equipment 600, provide power to power equipment through the VOC gas after compression and secondary purification. The secondary cleaning apparatus 520 includes a dust filter 521, an oil filter 522, and an activated carbon filter 523, and the duct 200 communicates the dust filter 521, the oil filter 522, and the activated carbon filter 523 in sequence. The dust filter 521 is used to remove particles from the compressed exhaust gas, and the pore size of the filter is preferably less than 0.5 μm, so as to reduce the influence of the particles on the aerodynamic performance of the air reservoir 530. The piston type air compressor and the screw type air compressor need air compressor oil for lubrication in the air compression process, the air compressor oil is easy to bring into the air storage tank 530 after being lubricated, so that the pneumatic performance is influenced, the oil filter 522 is convenient for removing oil stains in the compressed waste gas, and the aperture of a filter hole is preferably 0.01-0.1 micrometer. The activated carbon filter 523 can further absorb the remaining particulate matters and micro oil particles in the compressed VOC gas through adsorption, and the activated carbon filter 740 can absorb the particulate matters and micro oil droplets with a particle size of more than 0.01 micron and can absorb other gas pollutants in the exhaust gas. Still be connected with adsorption dryer 524 between dust filter 521 and the oil filter 522, adsorption dryer 524 all passes through pipeline 200 with dust filter 521 and oil filter 522 and is connected, and the humidity is great in the waste gas after the compression, and adsorption dryer 524 can reduce the humidity of the waste gas after the compression through adsorption, dry compressed gas, can also adsorb the peculiar smell in the waste gas after the compression simultaneously.

As an alternative embodiment, the recycling assembly 500 further comprises a second heat exchanger 540 and a second buffer tank 550, the second heat exchanger 540 is connected with the air compressor 510 through the pipe 200, the second buffer tank 550 is connected with the second heat exchanger 540 through the pipe 200, and the VOC gas can sequentially enter the second heat exchanger 540 and the second buffer tank 550. The second buffer tank 550 can store the VOC gas after the heat exchange of the second heat exchanger 540, and is also convenient for stabilizing the pressure of the VOC gas. The gas storage tank 530 and the second buffer tank 550 are communicated with each other through a second connecting pipe 531, the connecting positions of the second connecting pipe 531, the gas storage tank 530 and the second buffer tank 550 are located at the bottommost parts of the gas storage tank 530 and the second buffer tank 550, a large amount of liquid such as water is generated in the compression process of waste gas, the liquid storage tank 532 is connected through the second connecting pipe 531, and the liquid storage tank 532 collects the liquid generated by the gas storage tank 530 and the second buffer tank 550. The highest position of the liquid storage tank 532 is lower than the lowest positions of the gas storage tank 530 and the second buffer tank 550, so that the liquid can be conveniently collected under the action of gravity. The second connection pipe 531 is further connected to an oil-water separator 533, a large amount of oil is present in the second buffer tank 550 and the gas storage tank 530, the oil-water separator 533 can separate oil in the liquid generated by the second buffer tank 550 and the gas storage tank 530, and the separated air compressor oil can be collected and recycled. Preferably, a third check valve 240 is disposed between the second heat exchanger 540 and the second buffer tank 550, the third check valve 240 is connected to the pipe 200, and the third check valve 240 prevents the compressed exhaust gas from re-entering the second heat exchanger 540 from the second buffer tank 550.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The VOC gas purification and recycling device is characterized by comprising a pipeline, a collection assembly, a purification assembly, a recycling assembly and power equipment; the pipeline can be used for communicating the collection assembly, the purification assembly and the reuse assembly through VOC gas; the collecting assembly is connected with VOC gas discharging equipment through the pipeline, and the VOC gas enters the collecting assembly after being discharged; the collection assembly is capable of dedusting the VOC gas and reducing the temperature and concentration of the VOC gas; the purification component carries out primary purification on the VOC gas through a recovery and/or decomposition technology; the recycling assembly compresses and purifies the VOC gas for the second time, the compressed VOC is stored, and the stored compressed VOC gas provides power for the power equipment.

2. The VOC gas purification and reuse apparatus according to claim 1, wherein the collection module comprises a spray tower, a desalination device and a first heat exchanger, the pipeline connects the spray tower, the desalination device and the first heat exchanger in sequence, the VOC gas passes through the spray tower, the desalination device and the first heat exchanger in sequence, and the first heat exchanger is connected to the purification module through the pipeline.

3. The VOC gas purification and reuse apparatus according to claim 2, wherein the spray tower comprises a water collecting area, a dust removing area, a gas collecting area, a water tank, a water supply pipe and a water baffle; the cross section of the water collecting area is arc-shaped and is arranged at the bottom of the spray tower, the dust removing area is arranged in the middle of the spray tower, and the cross section of the gas collecting area is arc-shaped and is arranged at the top of the spray tower; the water supply pipe can spray water in the water tank in the dust removing area through atomization; the water baffle is arranged between the dust removal area and the gas collection area, and a plurality of air holes are formed in the water baffle to allow the VOC gas to pass through; and the VOC gas enters the spray tower from the dust removal area through a pipeline and is discharged out of the spray tower from the gas collection area through the pipeline.

4. The VOC gas purification and reuse apparatus according to claim 3, wherein said purification module comprises a gas mixing box, a purification equipment, a first buffer tank and a static eliminator, said gas mixing box, said purification equipment, said first buffer tank and said static eliminator are connected in sequence by said piping, said VOC gas passes through said gas mixing box, said purification equipment, said first buffer tank and said static eliminator in sequence, said gas mixing box is connected to said first heat exchanger, and said static eliminator is connected to said reuse module by said piping.

5. The VOC gas purification and reuse apparatus according to claim 4, wherein said first buffer tank is rotatable and is connected at the bottom with a waste liquid tank through a first connection pipe.

6. The VOC gas purification and reuse apparatus according to claim 5, wherein said purification equipment comprises an activated carbon filter box, an electrostatic adsorber, a photocatalyst and a plasma reactor; the activated carbon filter box, the electrostatic adsorber, the photocatalyst and the plasma reactor are sequentially connected in sequence from front to back through the pipeline; the activated carbon filter box and the electrostatic adsorber purify the VOC gas through a recovery technology; the photocatalyst and the plasma reactor purify the VOC gas through a decomposition technology.

7. The VOC gas purification and reuse apparatus according to any of claims 4-6, wherein said reuse assembly comprises an air compressor, a secondary purification device and a gas storage tank; the air compressor passes through the pipeline with the static eliminator is connected, air compressor, secondary purification equipment with the gas holder passes through the pipeline connects gradually.

8. The VOC gas purification and reuse apparatus according to claim 7, wherein said secondary purification device comprises a dust filter, an oil filter and an activated carbon filter, and said piping communicates said dust filter, said oil filter and said activated carbon filter in this order.

9. The VOC gas purification and reuse apparatus according to claim 8, wherein the reuse assembly further comprises a second heat exchanger and a second buffer tank, the second heat exchanger is connected to the air compressor through the pipe, the second buffer tank is connected to the second heat exchanger through the pipe, and the VOC gas can sequentially enter the second heat exchanger and the second buffer tank.

10. The VOC gas purification and reuse apparatus according to claim 9, wherein the gas tank and the second buffer tank are communicated with each other through a second connection pipe, and a liquid storage tank is connected through the second connection pipe, and the liquid storage tank collects liquid generated from the gas tank and the second buffer tank.