CN214598195U

CN214598195U - VOCs exhaust treatment device

Info

Publication number: CN214598195U
Application number: CN202120626240.8U
Authority: CN
Inventors: 裴登明
Original assignee: Nanjing Kechuang Environmental Engineering Development Co ltd
Current assignee: Nanjing Kechuang Environmental Engineering Development Co ltd
Priority date: 2021-03-26
Filing date: 2021-03-26
Publication date: 2021-11-05
Anticipated expiration: 2031-03-26

Abstract

The utility model discloses a VOCs exhaust treatment device, the device include filter (2), boiling adsorption oxidation tower (25), dust remover (26) and storage silo (22), filter (2) boiling adsorption oxidation tower (25) with dust remover (26) communicate in proper order, filter (2) have air inlet (1), filter (2) with boiling adsorption oxidation tower (25) communicate through first trachea (4), the absorption powder in storage silo (22) is outwards carried through first conveyer (24) for the absorption powder can get into in boiling adsorption oxidation tower (25), on boiling adsorption oxidation tower (25) or be equipped with the oxidant entry on first trachea (4). The utility model discloses a to adsorb powder, oxidant and VOCs waste gas and mix together, carry out synchronous processing to VOCs pollutant and stench, improve the treatment effect.

Description

VOCs exhaust treatment device

Technical Field

The utility model relates to a waste gas treatment technical field specifically, relates to a VOCs exhaust treatment device.

Background

With the development of economy and social progress, many industrial industries generate a large amount of malodorous gases and VOCs (volatile organic compounds) in the production process, and the substances cause great harm to human health and environment. When the skin care product is used in an environment polluted by volatile organic compounds for a long time, chronic poisoning can be caused, the liver and the nervous system are damaged, and symptoms such as general weakness, skin itch and the like are caused. Some may also cause endocrine dyscrasia, affect sexual function; benzene and xylene can also damage the system, leading to the onset of leukemia. "clean air action" has been developed in many provinces and cities in China, so that the search for a feasible and economical technology to control the VOCs and the malodors discharged by the industry is not slow.

Common technologies for controlling malodorous pollutants and degrading VOCs include absorption, activated carbon adsorption, incineration, medicament spraying, plasma oxidation, biotechnological degradation and the like, and are generally selected according to the type and characteristics of waste gas. Most of treatment equipment in the existing market only adopts a single treatment technology, and the synchronous treatment effect on VOCs pollutants and peculiar smell is not ideal.

SUMMERY OF THE UTILITY MODEL

To above problem, the utility model provides a VOCs exhaust treatment device, the device can carry out synchronous processing to VOCs pollutant and stench, and the treatment effect is good.

In order to realize the above-mentioned purpose, the utility model provides a VOCs exhaust treatment device, the device include filter, boiling adsorption oxidation tower, dust remover and storage silo, the filter boiling adsorption oxidation tower with the dust remover communicates in proper order, the filter has the air inlet, the filter with boiling adsorption oxidation tower passes through first trachea intercommunication, the absorption powder in the storage silo is outwards carried through first conveyer for the absorption powder can get into in the boiling adsorption oxidation tower, on the boiling adsorption oxidation tower or be equipped with the oxidant entry on the first trachea.

Preferably, the gas outlet direction of the first gas pipe is tangent to the inner wall of the boiling adsorption oxidation tower, so that the gas entering the boiling adsorption oxidation tower through the first gas pipe forms a rotational flow.

Preferably, the discharge end of the first conveyor is located in the first gas tube.

Preferably, the first air pipe is of a bending type.

Preferably, the top of the boiling adsorption oxidation tower is provided with a cyclone plate separation zone, the bottom of the boiling adsorption oxidation tower is provided with an oxidation tower ash hopper, and the oxidation tower ash hopper is communicated with the storage bin through a second conveyor.

Preferably, a dust remover ash hopper is arranged at the bottom of the dust remover and is communicated with the storage bin through a third conveyor.

Preferably, the oxidant is ozone, and an ozone destructor is connected behind the dust remover.

Preferably, the filter material of the filter is a felt filter element or a cloth bag.

Preferably, the bottom of the filter is provided with a liquid outlet.

Preferably, the filter material in the dust remover is a sintered plate, a cloth bag or a filter cartridge.

Through the technical scheme, the utility model discloses a following beneficial effect:

1. the utility model mixes the adsorption powder, the oxidant and the VOCs waste gas together to synchronously treat VOCs pollutants and stink, and the two methods are used in a fusion way to improve the treatment effect;

2. in the preferred technical scheme of the utility model, the gas outlet direction of the first gas pipe is designed to be tangent to the inner wall of the boiling adsorption oxidation tower, so that the gas entering the boiling adsorption oxidation tower through the first gas pipe forms a rotational flow, the path of the gas in the boiling adsorption oxidation tower is prolonged, and further the purification period of the oxidation of VOC substances and adsorption powder is prolonged;

3. in the preferred technical scheme of the utility model, the discharge end of the adsorption powder and the oxidant inlet can be both positioned in the first air pipe, so that the adsorption powder and the oxidant are contacted with the waste gas in advance, the purification working time is prolonged, and the purification effect is enhanced;

4. the utility model discloses an among the preferred technical scheme, establish the conveyer respectively in the bottom of boiling adsorption oxidation tower and the bottom of dust remover, can send the absorption powder that subsides back to the storage silo and recycle, practice thrift the cost.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Description of the reference numerals

1-air inlet, 2-filter, 3-liquid outlet, 4-first air pipe, 5-ozone conveying pipe, 6-folding arm, 7-ozone generator, 8-first rotational flow plate, 9-manhole, 10-second rotational flow plate, 11-second air pipe, 12-boiling oxidation cavity, 13-exhaust cavity, 14-filter material, 15-third air pipe, 16-chimney, 17-exhaust fan, 18-settling cavity, 19-dust remover ash bucket, 20-third conveyor, 21-oxidation tower ash bucket, 22-powder storage bin, 23-second conveyor, 24-first conveyor, 25-boiling adsorption oxidation tower, 26-dust remover, 27-ozone destructor

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

It should be noted that, in the following description, for the purpose of clearly explaining the technical solution of the present invention, directional terms such as "outer", "inner", and the like are used according to the meaning of the components in the exhaust gas treatment device, for example, a portion through which the gas passes is an inner portion, and a portion opposite to the inner portion is an outer portion, so as to facilitate the description of the present invention and simplify the description, but do not indicate or imply that the indicated device or component must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, and therefore the features defined "first", "second", "third" may explicitly or implicitly include one or more of the features described.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1, the utility model discloses a VOCs exhaust treatment device includes filter 2, boiling adsorption oxidation tower 25, dust remover 26 and storage silo 22, filter 2 boiling adsorption oxidation tower 25 with dust remover 26 communicates in proper order, filter 2 has air inlet 1, filter 2 with boiling adsorption oxidation tower 25 communicates through first trachea 4, the absorption powder in storage silo 22 is through first conveyer 24 outside transport for the absorption powder can get into in the boiling adsorption oxidation tower 25, on the boiling adsorption oxidation tower 25 or be equipped with the oxidant entry on the first trachea 4.

VOCs waste gas gets into filter 2 from air inlet 1 in, utilizes the filtering material in filter 2 to carry out the preliminary treatment to waste gas, holds back the great particulate matter of powder footpath in the waste gas, if contain liquid in the entrapment then by being located the leakage fluid dram 3 discharge of filter 2 bottoms, from the source alleviate the processing load of follow-up technology. The filtering material in the filter 2 can adopt a felt filter element or a cloth bag and the like.

The filtered VOCs waste gas enters a boiling oxidation cavity 12 of a boiling adsorption oxidation tower 25 from a first gas pipe 4, and an oxidant is introduced from the outside to oxidize the VOCs waste gas and adsorb the odor by adsorbing powder. The section is a composite process and adopts powder adsorption and oxidant oxidation dual treatment. The adsorption powder can be directly blown into the device by utilizing the airflow of the waste gas, so that the malodorous substances are adsorbed and intercepted by the powder. The adsorption powder material can be selected from active carbon powder, attapulgite powder or zeolite powder with the particle size of 200-300 meshes. The device is filled with the oxidant while powder is adsorbed, VOCs and VOC substances adsorbed by the powder are oxidized by utilizing the oxidability of the oxidant, and the adsorption and the oxidation are synchronously carried out, so that the treatment effect is improved.

In order to further improve the effect, the gas outlet direction of the first gas pipe 4 is tangential to the inner wall of the boiling adsorption oxidation tower 25, so that the gas entering the boiling adsorption oxidation tower 25 through the first gas pipe 4 forms a rotational flow, the path of the gas in the boiling adsorption oxidation tower 25 is prolonged, the purification period of the VOCs is further prolonged, and the purification effect is improved.

The discharge end of the first conveyor 24 can be positioned in the boiling adsorption oxidation tower 25 as close to the gas outlet of the first air pipe 4 as possible, and also can be positioned in the first air pipe 4, so that the adsorption powder is contacted with the waste gas in advance, the adsorption working time is prolonged, and the purification effect is enhanced.

In order to prevent the adsorption powder from affecting the filter 2, the first air pipe 4 may be designed to be bent, such as U-shaped, L-shaped, or M-shaped, and the bent design may extend the length of the pipe in the same space, and may effectively prevent the adsorption powder from entering the filter 2 and causing the service life of the filter 2 to be shortened. At this time, obviously, the discharge end of the first conveyor 24 is provided in the folding arm 6 of the first gas pipe 4 near the boiling adsorption oxidation tower 25.

After the waste gas is subjected to adsorption and oxidation treatment, the adsorption powder in the waste gas is removed and then the waste gas can be discharged, the dust remover 26 is used for removing the adsorption powder, the waste gas boiling adsorption oxidation tower 25 enters the dust remover 26 through the second air pipe 11, and the filter material in the dust remover 26 intercepts the adsorption powder to prevent a large amount of powder from being brought into a subsequent process to influence the overall purification effect. The clean gas obtained after dust removal can be discharged or passed into subsequent treatment equipment. The filter 14 in the dust separator 26 may be a sintered plate, a cloth bag or a filter cartridge, preferably a sintered plate, which is well adapted to slight oil and water contained in the front-end exhaust gas.

The dust remover 26 comprises an exhaust cavity 13, a filter material 14 and a settling cavity 18 from top to bottom in sequence, and the intercepted adsorption powder is settled in the settling cavity 18. The bottom of the settling chamber 18 is provided with a dust catcher ash hopper 19 for discharging the adsorption powder out of the dust catcher 26.

The sorbent material discharged from the dust separator 26 may be re-transported to the storage silo 22 for recycling, for which purpose the dust separator hopper 19 communicates with said storage silo 22 via a third conveyor 20.

In order to reduce the workload of the dust remover 26, a cyclone plate separation area is arranged at the top of the boiling adsorption oxidation tower 25, at least one cyclone plate is arranged in the cyclone plate separation area, most dust can be intercepted by the cyclone plate, and waste gas containing a small amount of dust with smaller particle size enters the dust remover 26 of the next stage. Similarly, the bottom of the boiling adsorption oxidation tower 25 is provided with an oxidation tower ash hopper 21 for discharging the adsorption powder out of the boiling adsorption oxidation tower 25. The adsorption powder discharged from the boiling adsorption oxidation tower 25 can be re-conveyed to the storage bin 22 for recycling, and for this purpose, the oxidation tower ash hopper 21 is communicated with the storage bin 22 through the second conveyor 23.

The swirl plate is a commercially available product, such as corrosion-resistant glass fiber reinforced plastic swirl plate from the Innovation glass fiber reinforced plastic company.

The void volume of the storage silo 22 is designed according to the oxidation reaction time so that the total amount of the adsorbed powder meets the overall oxidation requirement.

The first conveyor 24, the second conveyor 23, and the third conveyor 20 may be screw conveyors.

Preferably, the oxidant is ozone with strong oxidizing property, and commercially available ozone is directly introduced into the device through the ozone delivery pipe 5. In order to reduce the storage cost, an ozone generator 7 can be additionally arranged on the whole device and is communicated with the device through an ozone conveying pipe 5. The ozone generator 7 is a commercially available product, such as the FL-820F air duct ozone generator from Feili electric company.

One end of the ozone conveying pipe 5 which is led into the device can be positioned on the boiling adsorption oxidation tower 25 or the first air pipe 4, preferably on the first air pipe 4, so that the ozone can be contacted with the waste gas in advance, the oxidation reaction time is prolonged, and the oxidation effect is enhanced.

In order to ensure the exhaust gas treatment reaction is complete, it is usually necessary to introduce excessive ozone, and in order to avoid pollution caused by the discharge of unreacted ozone into the atmosphere, an ozone destructor 27 is connected to the rear of the dust collector 26 through a third gas pipe 15. An ultraviolet lamp tube with the wavelength of 254nm is arranged in the ozone destructor 27 and is used for decomposing ozone.

The gas treated by the device can be obtained as clean gas, and the gas is discharged through a tail end chimney 16 under the action of an exhaust fan 17.

The following is a preferred embodiment of the present invention.

As shown in fig. 1, the VOCs waste gas treatment device comprises a filter 2, a dust remover 26 of a boiling adsorption oxidation tower 25, a storage bin 22, an ozone generator 7, an ozone destructor 27, an exhaust fan 17 and a chimney 16, wherein the filter 2 is provided with an air inlet 1, the filter 2 is communicated with the boiling adsorption oxidation tower 25 through a U-shaped first air pipe 4, the air outlet direction of the first air pipe 4 is tangential to the inner wall of the boiling adsorption oxidation tower 25, and adsorption powder in the storage bin 22 is conveyed into the first air pipe 4 through a first conveyor 24; the ozone generator 7 is communicated with the first air pipe 4 through an ozone conveying pipe 5, and the gas outlet end of the ozone conveying pipe 5 is farther away from the connection position of the first air pipe 4 and the boiling adsorption oxidation tower 25 relative to the discharge end of the first conveyor 24; the top of the boiling adsorption oxidation tower 25 is provided with a first spiral-flow plate 8 and a second spiral-flow plate 10, the bottom of the boiling adsorption oxidation tower is provided with an oxidation tower ash hopper 21, the side wall of the boiling adsorption oxidation tower is provided with a manhole 9, and the oxidation tower ash hopper 21 is communicated with the storage bin 22 through a second conveyor 23; the boiling adsorption oxidation tower 25 is communicated with a dust remover 26 through a second air pipe 11, an exhaust cavity 13, a filter material 14 and a settling cavity 18 are sequentially arranged in the dust remover 26 from top to bottom, a dust remover ash hopper 19 is arranged at the bottom of the settling cavity 18, and the dust remover ash hopper 19 is communicated with a storage bin 22 through a third conveyor 20; the dust collector 26 is communicated with an ozone destructor 27 through a third air pipe 15, and the ozone destructor 27 is followed by a chimney 16 with an exhaust fan 17.

VOCs waste gas enters the filter 2 from the gas inlet 1, the waste gas is pretreated by using filter materials in the filter 2, particles with larger powder diameters in the waste gas are intercepted, and if liquid is contained in the intercepted substances, the liquid is discharged from the liquid outlet 3; the filtered waste gas enters a first air pipe 4, is sequentially contacted with ozone and adsorption powder, then is introduced into a boiling oxidation cavity 12 of a subsequent boiling adsorption oxidation tower 25 together, is fully mixed with the adsorption powder and the ozone in the boiling oxidation cavity 12, and pollutants in the waste gas are adsorbed by the powder and oxidized by the ozone; the dust-containing waste gas after boiling oxidation passes through the first rotational flow plate 8 and the second rotational flow plate 10 in sequence, most dust can be intercepted by the first rotational flow plate 8 and the second rotational flow plate 10, and is settled to the bottom of the boiling adsorption oxidation tower 25, and is sent to the storage bin 22 from the oxidation tower ash hopper 21 by the second conveyor 23, the waste gas containing a small amount of dust with smaller particle size enters the dust remover 26 of the next stage and is intercepted by the filter material 14, the adsorption powder is settled and is sent to the storage bin 22 from the dust remover ash hopper 19 by the third conveyor 20, the clean gas flows out from the upper part of the dust remover 26, and after being treated by the ozone destructor 27, the ozone content of the exhaust gas is reduced, and the clean gas is discharged through the tail end chimney 16 under the action of the exhaust fan 17.

As can be seen from the above description, the present invention has the following advantages: the utility model mixes the adsorption powder, the oxidant and the VOCs waste gas together to synchronously treat VOCs pollutants and stink, thereby improving the treatment effect; the gas outlet direction of the first gas pipe 4 is designed to be tangent to the inner wall of the boiling adsorption oxidation tower 25, so that the gas entering the boiling adsorption oxidation tower 25 through the first gas pipe 4 forms a rotational flow, the path of the gas in the boiling adsorption oxidation tower 25 is prolonged, and the purification period of the VOC substance oxidation and the adsorption powder is further prolonged; the discharge end of the adsorption powder and the oxidant inlet can be both positioned in the first air pipe 4, so that the adsorption powder and the oxidant are contacted with the waste gas in advance, the purification working time is prolonged, and the purification effect is enhanced; and the bottom of the boiling adsorption oxidation tower 25 and the bottom of the dust remover 26 are respectively provided with a conveyer, so that the settled adsorption powder can be sent back to the storage bin 22 for recycling, and the cost is saved.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.

In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.

Claims

1. The utility model provides a VOCs exhaust treatment device, its characterized in that, includes filter (2), boiling adsorption oxidation tower (25), dust remover (26) and storage silo (22), filter (2), boiling adsorption oxidation tower (25) and dust remover (26) communicate in proper order, filter (2) have air inlet (1), filter (2) with boiling adsorption oxidation tower (25) are through first trachea (4) intercommunication, the absorption powder in storage silo (22) is outwards carried through first conveyer (24) for the absorption powder can get into in boiling adsorption oxidation tower (25), be equipped with the oxidant entry on boiling adsorption oxidation tower (25) or on first trachea (4).

2. A voc exhaust treatment device according to claim 1, wherein the outlet direction of the first gas pipe (4) is tangential to the inner wall of the boiling adsorption oxidation tower (25), so that the gas entering the boiling adsorption oxidation tower (25) through the first gas pipe (4) forms a rotational flow.

3. A VOCs effluent treatment plant as claimed in claim 1, wherein the discharge end of said first conveyor (24) is located in said first gas duct (4).

4. A VOCs exhaust treatment device as claimed in claim 1, wherein the first air duct (4) is of a bent type.

5. A VOCs waste gas treatment device as claimed in claim 1, wherein the top of the boiling adsorption oxidation tower (25) is provided with a cyclone plate separation zone, the bottom of the boiling adsorption oxidation tower is provided with an oxidation tower ash hopper (21), and the oxidation tower ash hopper (21) is communicated with the storage bin (22) through a second conveyor (23).

6. A VOCs exhaust treatment device as claimed in claim 1, wherein a dust collector ash hopper (19) is provided at the bottom of the dust collector (26), the dust collector ash hopper (19) being in communication with the storage bin (22) via a third conveyor (20).

7. A VOCs exhaust treatment device according to any of claims 1 to 6, wherein the oxidant is ozone and an ozone destructor (27) is connected after the dust separator (26).

8. A VOCs waste gas treatment device according to any of claims 1-6, characterized in that the filter material of the filter (2) is a felt filter element or a cloth bag.

9. A VOCs exhaust treatment device according to any of claims 1 to 6, characterized in that the bottom of the filter (2) is provided with a drain (3).

10. A VOCs exhaust treatment device according to any of claims 1 to 6, wherein the filter (14) in the dust separator (26) is a sintered plate, a cloth bag or a filter cartridge.