CN213590094U - Hydrophilicity VOC administers device - Google Patents

Abstract

The utility model discloses a hydrophilicity VOC administers device, including the spray column, the spray column includes absorption liquid circulation district and sprays the district, it purifies the packing layer and right to be equipped with at least one deck in the district to spray the spray thrower that the packing layer sprayed the VOC absorbed liquid to purify, the spray thrower through the circulating pipe that has the circulating pump with absorption liquid circulation district intercommunication, it grows the microbial film that has the aquatic hydrophilicity VOC that can degrade to purify to cultivate on the packing layer, the spray column is located the below and the top in district of spraying are equipped with air inlet and gas vent respectively. This administer the device and combine biological treatment method and spray column, on the basis of guaranteeing VOC's treatment effect, can reduce the treatment cost and the engineering area of waste liquid treatment.

Description

Hydrophilicity VOC administers device

Technical Field

The utility model belongs to the technical field of VOC administers, especially, relate to a hydrophilicity VOC administers device.

Background

With the development of society and economy, industrial emission is realized. Among them, the problem of air pollution becomes more and more serious as the industrial production activities increase. Among them, Volatile Organic Compounds (VOCs) are a typical pollutant generated in industrial activities.

According to statistics, in 2015, the emission of VOC in key areas of China exceeds the sum of the total emission of nitric oxide and SO2 in the same year. VOC is liable to cause chronic or acute poisoning of human organs, and even serious consequences such as carcinogenesis can be generated. On the other hand, the VOC is an intermediate formed by haze and ozone near the earth, and the excessive discharge of the VOC can cause a serious problem of air pollution. Therefore, the VOC generated in the industrial process needs to be absorbed by taking a reasonable measure.

The treatment of VOC is generally an adsorption method, a solvent absorption method, a thermal oxidation method and a biological method at present. However, these methods have some technical defects, for example, the adsorption method uses equipment with large floor area, complex flow, high operation cost, easy poisoning of the adsorbent and easy secondary pollution; the waste liquid generated by the solvent absorption method has large treatment investment, and the absorption liquid has large selectivity to VOC and is easy to generate secondary pollution. The thermal oxidation method has the problems of danger of combustion and explosion, service life of a catalyst, pretreatment of waste gas and the like; the biological treatment method has poor effect of removing the VOC which is difficult to degrade, large volume, long retention time and high requirement on the filler.

In summary, how to reduce the treatment period, cost and engineering floor area of waste liquid treatment on the basis of ensuring the treatment effect of VOC is a technical problem to be solved urgently at present.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hydrophilicity VOC administers device, this administers device and combines biological treatment method and spray column, on the basis of guaranteeing VOC's treatment effect, can reduce the treatment cost and the engineering area of waste liquid treatment.

In order to achieve the purpose, the following technical scheme is adopted in the application:

a hydrophilic VOC treatment device comprises a spray tower, wherein the spray tower comprises an absorption liquid circulation area and a spray area, at least one layer of purification packing layer and a sprayer for spraying VOC absorption liquid on the purification packing layer are arranged in the spray area;

the sprayer is communicated with the absorption liquid circulating area through a circulating pipe with a circulating pump, and a microbial film capable of degrading VOC in the absorption liquid is cultured and grown on the purification filler layer;

the spray tower is positioned below and above the spray area and is respectively provided with an air inlet and an air outlet.

Specifically, the air inlet is arranged at the bottom of the absorption liquid circulation.

Specifically, an aerator which is in butt joint with the air inlet is arranged in the absorption liquid circulating area.

Specifically, the spraying direction of the sprayer is opposite to the flowing direction of the hydrophilic VOC gas in the spray tower.

Specifically, the spraying region is provided with the sprayer corresponding to each layer of the purification filler layer.

Specifically, the spray tower further comprises a demisting area positioned between the spray area and the exhaust port, and a demister is arranged in the demisting area.

Specifically, the spray tower further comprises a cyclone area positioned between the demisting area and the spraying area, and a cyclone plate is arranged in the cyclone area.

Specifically, a liquid storage tank is arranged on the circulating pipe, and the liquid storage tank is provided with a liquid inlet and a liquid outlet.

Compared with the prior art, the utility model discloses following beneficial effect has:

the gas containing hydrophilic VOC enters the spray tower from the gas inlet and is captured and absorbed by VOC absorption liquid sprayed by the sprayer, the absorption liquid is sprayed out of the sprayer and then reacts with a purification packing layer which is successfully formed with a microbial film in the spray tower after the absorption liquid is coated with the microbial film, so that waste liquid is biodegraded.

Drawings

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

Fig. 1 is a schematic structural view of a hydrophilic VOC abatement device provided by an embodiment of the present invention;

wherein: 1-an absorption liquid circulation zone; 2-a spraying area; 3-purifying the filler layer; 4-a sprayer; 5-an air inlet; 6-an exhaust port; 7-an aerator; 8-a demisting zone; 9-cyclone area; 10-a demister; 11-a swirl plate; 12-a circulation pipe; 13-a liquid storage tank; 14-circulating pump.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in 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.

Referring to fig. 1, a hydrophilicity VOC administers device, including the spray column, the spray column includes absorption liquid circulation district 1 and sprays district 2, be equipped with at least one deck purification packing layer 3 and spray 4 to purifying packing layer 3 and spraying VOC absorption liquid in the district 2, spray 4 is through circulating pipe 12 and absorption liquid circulation district 1 intercommunication that has circulating pump 14, it has the microbial film that can degrade hydrophilicity VOC in the absorption liquid to cultivate to grow on the purification packing layer 3, the spray column is located and is equipped with air inlet 5 and gas vent 6 respectively in the below and the top of spraying district 2. Specifically, a sprayer 4 is arranged in the spraying area 2 corresponding to each layer of the purification filler layer 3.

In the embodiment of the application, the gas containing hydrophilic VOC enters the spray tower from the gas inlet 5 and is captured and absorbed by the VOC absorption liquid sprayed by the sprayer 4, the VOC absorption liquid containing VOC is sprayed out from the sprayer 4 and then reacts with the purification packing layer 3 which is successfully formed with the microbial film by film formation in the spray tower, so that the waste liquid is biodegraded, and the treatment device uses the packing capable of forming the microbial film, so that the waste liquid in the spray tower can be treated in situ when the film formation is successful in the equipment operation stage, an external waste water treatment facility does not need to be built, and the treatment cost and the engineering floor area of waste liquid treatment can be reduced.

Referring to fig. 1, it can be understood that, in practical application, the gas inlet 5 is disposed at the bottom of the absorption liquid circulation zone 1, the gas containing hydrophilic VOCs is introduced into the VOC absorption liquid in the absorption liquid circulation zone 1 from the bottom of the absorption liquid circulation zone 1 for washing and purification, so as to absorb most of the hydrophilic VOCs, and the gas containing a small amount of VOCs after washing and purification is further captured and absorbed by the VOC absorption liquid sprayed from the sprayer 4, and finally carried to the bottom of the spraying tower by the absorption liquid. Through continuous circulating spraying, the purification filler which is successfully filmed can also have a degradation reaction with the sprayed liquid, so that the treatment effect of the whole treatment device is always at a high level, and the removal effect of the hydrophilic VOC is maximized.

Referring to fig. 1, in some possible embodiments, an aerator 7 is disposed in the absorption liquid circulation zone 1 and is in butt joint with the gas inlet 5, that is, the introduced gas containing hydrophilic VOC is aerated by the aerator 7 and is dispersed into a plurality of micro-bubbles in the absorption liquid circulation zone 1, and the smaller particle size and the larger specific surface area of the bubbles enable the mass transfer efficiency of the treatment device to be high, and the capacity of the absorption liquid at the bottom of the spray tower for capturing VOC to be improved. Because the spray tower is provided with the purification filler with the film, the waste liquid can carry out biodegradation reaction in the spray tower. The waste liquid can be sent to the sprayer 4 of the spray tower through a circulating pump 14 and finally flows out of the sprayer 4, so that the waste liquid is circulated. In addition, when the spraying direction of the sprayer 4 is opposite to the flowing direction of the gas containing the hydrophilic VOC in the spray tower, the VOC trapping efficiency can be further improved.

Referring to fig. 1, it can be understood that, in practical design, the spray tower further includes a demisting area 8 located between the spray area 2 and the exhaust port 6, a cyclone area 9 may be further disposed between the demisting area 8 and the spray area 2, a demister 10 is disposed in the demisting area 8, a cyclone plate 11 is disposed in the cyclone area 9, and the water mist in the purified gas can be removed by disposing the demisting area 8 and the cyclone area 9.

Specifically, be equipped with liquid storage tank 13 on circulating pipe 12, liquid storage tank 13 has inlet and liquid outlet, and the VOC absorbed liquid that microbial degradation handled gets into liquid storage tank 13, and this liquid storage tank 13 can be discharged the absorbed liquid after finishing purifying, also can be to inside input fresh VOC absorbed liquid, and the absorbed liquid sends to spray thrower 4 in the spray column through circulating pump 14 after getting into liquid storage tank 13, and the rethread spray thrower 4 spouts in the spray column, and wherein, the absorbed liquid can adopt the absorption water.

Referring to FIG. 1, the overall abatement device operates as follows:

after the preparation work in the spray tower is finished, the air inlet 5 of the spray tower is opened, the VOC-containing gas is introduced into the spray tower through the aerator 7, and the absorbing liquid is enabled to dissolve the VOC in the gas.

Then, the gas is released to the top of the liquid surface along with the explosion of the bubbles at the liquid surface and moves upwards, and penetrates through the spraying area 2 filled with the purification packing, and in the process, a small amount of VOC in the gas is dissolved by the absorption liquid sprayed and is subjected to biological degradation with the purification packing at the same time, and finally falls back to the bottom of the spraying tower.

The gas purified by the spraying area is discharged from the exhaust port 6 and enters the next treatment process after a large amount of water vapor in the gas is removed by the cyclone area 9 and the demister 10.

The absorption liquid containing VOC at the bottom of the spraying tower circulates through an external liquid storage tank 13 and a circulating pump 14, the VOC is continuously degraded in the absorption liquid, 5% of the absorption liquid is discharged after the water quality of the absorption liquid reaches the three-level standard of Integrated wastewater discharge Standard (GB8978-1996), and fresh absorption liquid is added to keep the normal and continuous operation of the whole treatment device.

Application example

The hydrophilic VOC treatment device provided by the embodiment of the application is used for absorbing and degrading hydrophilic VOC generated by water-based ink used in the printing industry and the flexible packaging industry as follows: the gas in the plant is first sent to a spray tower, and then the absorption liquid at the bottom of the spray tower can absorb most of the hydrophilic VOC. And then, the absorbing liquid containing VOC reacts with the purifying filler which is coated successfully at the bottom of the spray tower, so that the waste liquid is biodegraded. The gas coming out of the liquid phase at the bottom of the spray tower will come into contact with the spray liquid above, so that a small part of the VOC can be absorbed by the spray liquid and returned to the bottom of the spray tower. The gas is then discharged from the exhaust 6 through the cyclone zone 9 and the demister 10.

The above examples are merely illustrative of the present invention clearly and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Nor is it intended to be exhaustive of all embodiments. And obvious changes and modifications may be made without departing from the scope of the present invention.

Claims (9)

1. The utility model provides a hydrophilicity VOC administers device, includes the spray column, its characterized in that: the spray tower comprises an absorption liquid circulation area and a spray area, wherein at least one layer of purification filler layer and a sprayer for spraying VOC absorption liquid on the purification filler layer are arranged in the spray area;

the sprayer is communicated with the absorption liquid circulating area through a circulating pipe with a circulating pump, and a microbial film capable of degrading VOC in the absorption liquid is cultured and grown on the purification filler layer;

the spray tower is positioned below and above the spray area and is respectively provided with an air inlet and an air outlet.

2. The hydrophilic VOC remediation device of claim 1, wherein: the air inlet is arranged at the bottom of the absorption liquid circulating area.

3. The hydrophilic VOC remediation device of claim 2, wherein: an aerator which is in butt joint with the air inlet is arranged in the absorption liquid circulating area.

4. The hydrophilic VOC remediation device of any one of claims 1-3, wherein: the spraying direction of the sprayer is opposite to the flowing direction of the gas in the spray tower.

5. The hydrophilic VOC remediation device of any one of claims 1-3, wherein: the spraying area is provided with the sprayer corresponding to each layer of the purification packing layer.

6. The hydrophilic VOC remediation device of any one of claims 1-3, wherein: the spray tower further comprises a demisting area positioned between the spray area and the exhaust port, and a demister is arranged in the demisting area.

7. The hydrophilic VOC abatement device of claim 6, wherein: the spray tower further comprises a cyclone area positioned between the demisting area and the spraying area, and a cyclone plate is arranged in the cyclone area.

8. The hydrophilic VOC remediation device of any one of claims 1-3, wherein: the circulating pipe is provided with a liquid storage tank which is provided with a liquid inlet and a liquid outlet.

9. The hydrophilic VOC remediation device of any one of claims 1-3, wherein: the VOC absorption liquid is absorption water.

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