CN210229503U

CN210229503U - UV lacquer exhaust-gas treatment system

Info

Publication number: CN210229503U
Application number: CN201920658972.8U
Authority: CN
Inventors: Junjun Gao; 高军军; Bolin Lyu; 吕柏林; Haihang Wang; 王海航; Yilin Wang; 王艺霖
Original assignee: China Electronics Innovation Environmental Technology Co ltd
Current assignee: China Electronics Innovation Environmental Technology Co ltd
Priority date: 2019-05-09
Filing date: 2019-05-09
Publication date: 2020-04-03
Anticipated expiration: 2029-05-09

Abstract

The utility model provides a UV lacquer exhaust-gas treatment system, it can effectively carry out the pretreatment to UV lacquer waste gas to the change cycle of extension packed tower, dry-type rose box, active carbon. It includes pretreatment system and aftertreatment system, pretreatment system includes packed tower and dry-type rose box, aftertreatment system includes activated carbon box, its characterized in that: the pretreatment system further comprises a UV dynamic separator and a cyclone plate tower which are connected in sequence, and the cyclone plate tower is communicated with the packed tower.

Description

UV lacquer exhaust-gas treatment system

Technical Field

The utility model relates to the technical field, specifically be a UV lacquer exhaust-gas treatment system.

Background

The organic waste gas in the paint spraying industry has the characteristics of low concentration and large air quantity. Generally, the main components in the exhaust gas of the industry are: benzene series, ketones, alcohols, esters, etc. The difficulty of the waste gas treatment in the industry is pretreatment. Mainly embodied in the treatment of paint mist in the paint spraying waste gas. Among them, the mist treatment of UV paint (ultraviolet light curing paint) is a point which is difficult to break through in recent years.

The common pretreatment process for treating the waste gas of the UV paint mainly comprises a packed tower and dry filtration, and the post-treatment process mainly comprises activated carbon adsorption or photocatalysis. However, the UV paint mist has the characteristics of high viscosity and high penetrability in waste gas treatment. The paint mist of such a nature is easily clogged by washing with a packed tower or by dry filtration, and the dry filter box is frequently replaced. However, most of the production in the general spraying industry is continuous production, and frequent shutdown for replacing the filler and the filter material has great influence on the production of the owner and increases the operation cost to a certain extent. Furthermore, the difficulty of back-end processing process selection is increased due to its extremely high penetration. Because of the selection of the adsorption material such as the activated carbon or the zeolite runner, the penetration of the UV paint mist to the rear end easily blocks the activated carbon and the runner, and the viscosity is high, so that the blocking is almost irreversible, the service life of the activated carbon is greatly reduced, and the replacement frequency of the activated carbon is increased. And the photocatalysis is adopted as a post-treatment process, paint mist in front-end waste gas is easily adhered to the surface of the photocatalysis lamp tube, so that the whole equipment loses the capability of removing organic matters in organic waste gas.

SUMMERY OF THE UTILITY MODEL

The problem of pretreatment can't effectively carry out UV lacquer waste gas to traditional mode, the utility model provides a UV lacquer exhaust-gas treatment system, it can effectively carry out the pretreatment to UV lacquer waste gas to the change cycle of extension packed tower, dry-type rose box, active carbon.

The technical scheme is as follows: the utility model provides a UV lacquer exhaust-gas treatment system, its includes pretreatment system and aftertreatment system, pretreatment system includes packed tower and dry-type rose box, aftertreatment system includes activated carbon box, its characterized in that: the pretreatment system further comprises a UV dynamic separator and a cyclone plate tower which are connected in sequence, and the cyclone plate tower is communicated with the packed tower.

It is further characterized in that:

the inlet of the UV dynamic separator is provided with a front-mounted fan which is used for blowing UV paint waste gas into the UV dynamic separator;

the outlet of the activated carbon box is connected with a chimney, and a rear-mounted fan is further installed at the outlet of the activated carbon box and used for blowing the treated gas into the chimney;

paint mist filter cotton, G4 filter cotton, an F5 filter and an F7 filter are arranged in the dry type filter box.

After the system is adopted, the UV dynamic separator and the cyclone plate tower are installed in the pre-treatment system, the UV dynamic separator is mainly used for removing paint mist particles with particle sizes larger than or equal to 100 mu m in paint spraying waste gas, the cyclone plate tower is mainly used for removing the paint mist particles with particle sizes of 20-100 mu m, the packed tower is matched for treating the paint mist particles with particle sizes of 10-20 mu m and further treating the paint mist particles which are not removed by the dry type filter box, graded filtration of the paint mist generated by UV paint spraying is realized, most of the paint mist can be intercepted and removed at the front end, pre-treatment of the UV paint waste gas can be effectively carried out, the replacement period of active carbon is prolonged, loads of the packed tower and the cyclone plate tower are reduced, and the replacement period of the packed tower and the dry type filter box is prolonged.

Drawings

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

Detailed Description

As shown in fig. 1, a UV lacquer exhaust-gas treatment system, it includes pretreatment system and aftertreatment system, pretreatment system includes packed tower 3 and dry-type rose box 4, aftertreatment system includes activated carbon box 5, pretreatment system still includes UV dynamic separator 1 and whirl board tower 2 that connect gradually, whirl board tower 2 and packed tower 3 intercommunication, leading fan is installed to UV dynamic separator 1 import department for insufflate UV lacquer waste gas into UV dynamic separator 1, 5 exit linkage of activated carbon box has chimney 6, rearmounted fan is still installed in 5 exits of activated carbon box, be used for insufflating chimney 6 with the gas after handling.

The UV dynamic separator 1 is mainly used for stripping paint mist in waste gas from the waste gas by utilizing centrifugal force generated by rotation of an impeller, the stripped UV paint mist is hung on a wall and flows out from a discharge port, the UV paint is required not to contain a curing agent, and the rotating speed of the UV dynamic separator 1 is set to be 300 r/min. The method is mainly used for removing paint mist particles with the particle size of more than or equal to 100 mu m in the paint spraying waste gas, the removal rate is more than or equal to 90 percent, the equipment is generally made of stainless steel, and a UV dynamic interceptor of Yangzhou green spring environmental protection engineering technology company Limited can be selected.

The paint mist in the waste gas is removed by the cyclone plate tower 2 mainly by utilizing the inertia collision and centrifugal separation action of the paint mist and liquid, so that paint mist particles are thrown to the tower wall along with the liquid and flow to the liquid collecting tank under the action of gravity. The design wind speed of the cyclone plate tower is more than or equal to 4m/s, the cyclone plate tower mainly acts on paint mist particles with the particle size of 20-100 mu m, and the removal efficiency is about 80%. The equipment needs to regularly drag slag and replace circulating liquid, and can adopt a cyclone plate tower XDT-3000 produced by Jiangsu hurricane environmental protection technology limited company.

The packed tower 3 mainly utilizes the effect of a larger specific surface area and a liquid film in the packing to intercept and remove paint mist particles in the waste gas, so that the paint mist in the waste gas is intercepted and removed. The design wind speed of the equipment is less than or equal to 2m/s, and the equipment mainly acts on particles with the particle size of 10-20 mu m. The purification efficiency is more than or equal to 90 percent, and the purification device can be a packed tower produced by environmental protection and technology Limited corporation of Husu hurricane, and the packing is PP material and Q-PAC.

The dry filter box 4 is a multi-stage filtering device, in which a multi-stage filter is arranged to remove particles of paint mist in a layered and graded manner. Paint mist in UV spraying waste gas needs to be filtered by paint mist filter cotton, G4 filter cotton, F5 filter and F7 filter, four-stage filtration is carried out, the filter devices can be installed on a frame of the dry-type filter box 4 in a layered and fastening mode through buckles, paint mist particles which are not removed at the front end are intercepted to the maximum extent, and the removal rate designed at the section is more than or equal to 99%. The function of the device is mainly to remove paint mist particles which are not removed at the front end, and the device is a guarantee for the performance of the tail end core device.

The active carbon box 5 is used as a terminal treatment device and mainly has the effect that organic substances in waste gas are adsorbed, the front end is provided with a multi-stage device to remove paint mist, the removal efficiency of the active carbon is not influenced by the paint mist, the replacement period of the active carbon is prolonged, the space velocity of the equipment design is less than or equal to 1m/s, the filling thickness is 300-500 mm, honeycomb active carbon is preferably selected for the filled active carbon, and the active carbon box can be an AC-3000 active carbon box produced by Suzhou industrial park three-ladder clean equipment limited company.

By adopting the waste gas treatment system, the multistage separation equipment of the multistage filtration equipment arranged at the front end enables the paint mist in the incoming gas at the front end to be separated and purified to the maximum extent, the performance of the activated carbon is ensured to be exerted to the maximum extent, the replacement cycle of the activated carbon is prolonged, and the generation amount of hazardous waste is reduced; and secondly, the paint mist generated by UV paint spraying is filtered in a grading way, so that the removal efficiency can be well controlled. The flexibility of regulating and controlling the system efficiency is increased, and the application space of the process is enlarged; the device comprising the UV dynamic separation device, the cyclone plate tower device and the packing tower is arranged at the front end of the dry filter, so that most paint mist can be intercepted and removed at the front end, the replacement period of the dry filter box is prolonged, the shutdown times are reduced, and the operation and maintenance cost is reduced to the maximum extent; and fourthly, the impeller of the rear fan is protected by intercepting and purifying the paint mist at the front end to the maximum extent, the adhesion of the paint mist to the impeller of the fan is avoided to the maximum extent, and the unbalance risk of the impeller of the fan is reduced.

The system is suitable for treating UV paint spraying organic waste gas with medium and high air volume (not less than 10000Nm 3/h) and low concentration (less than 400mg/Nm 3). The specific requirements are as follows: 1. the UV spray paint does not contain a curing agent; 2. the concentration of organic matters is not higher than 400mg/Nm 3; 3. the spray booth is required to be provided with a water curtain or an equivalent paint mist treatment device; UV sprays paint waste gas gets into UV dynamic separator 1 under the effect of leading fan, is equipped with the separation impeller in the UV dynamic separator 1, and the centrifugal force that the high-speed rotation of separation impeller produced gets rid of the separation of the coating cloud granule in the waste gas, and the waste gas through UV dynamic separator 1 gets into whirl board tower 2 and packed tower 3 in proper order, utilizes the effect of centrifugal force and reverse flow water film to make the coating cloud in the waste gas can be held back and get rid of. The washed exhaust gas enters a dry filter box 4, and the equipment is provided with a multi-stage filter which can intercept residual paint mist in the exhaust gas. The clean waste gas obtained by multi-stage separation and filtration enters an activated carbon box 5, organic components in the waste gas are adsorbed and purified by utilizing the larger specific surface area and the developed gap structure of the activated carbon, and the obtained clean gas is discharged into a chimney 6 under the action of a rear fan.

The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention 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 utility model provides a UV lacquer exhaust-gas treatment system, its includes pretreatment system and aftertreatment system, pretreatment system includes packed tower and dry-type rose box, aftertreatment system includes activated carbon box, its characterized in that: the pretreatment system further comprises a UV dynamic separator and a cyclone plate tower which are connected in sequence, and the cyclone plate tower is communicated with the packed tower.

2. The UV paint exhaust treatment system according to claim 1, wherein: and a front-mounted fan is arranged at the inlet of the UV dynamic separator and is used for blowing UV paint waste gas into the UV dynamic separator.

3. The UV paint exhaust treatment system according to claim 2, wherein: and the outlet of the activated carbon box is connected with a chimney, and the outlet of the activated carbon box is also provided with a rear fan for blowing the treated gas into the chimney.

4. A UV paint exhaust gas treatment system according to any one of claims 1 to 3, wherein: paint mist filter cotton, G4 filter cotton, an F5 filter and an F7 filter are arranged in the dry type filter box.