CN210021588U

CN210021588U - VOCs exhaust-gas treatment equipment

Info

Publication number: CN210021588U
Application number: CN201920616840.9U
Authority: CN
Inventors: 陈丽丽
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-02-07
Anticipated expiration: 2029-04-30

Abstract

The utility model relates to a VOCs exhaust-gas treatment equipment belongs to waste gas treatment technical field, the draught fan that couples together in proper order around including, the rose box, cyclone, the spray column, combustion box and heat exchanger, filter box inside has inserted a filter screen, upper portion is equipped with the shower in the spray column, the inside intermediate position department of spray column is equipped with a baffle, the baffle all has the clearance with the top and the bottom of spray column, shower and the water pump intercommunication of setting outside the spray column, the bottom department of spray column is equipped with the fluid-discharge tube, the inside entry end of combustion box is equipped with the air distribution board, combustion box inside still is equipped with an aeration pipe by the entry end to the exit end in proper order, two combustors and a catalyst bed, the aeration pipe is associative with setting up two draught fans outside the combustion box. The utility model discloses carry out the preliminary treatment before carrying out catalytic combustion to VOCs waste gas and handling, for subsequent catalytic combustion handles and alleviates the burden, improve high concentration, large-traffic treatment effect and treatment effeciency.

Description

VOCs exhaust-gas treatment equipment

Technical Field

The utility model relates to a VOCs exhaust-gas treatment equipment belongs to exhaust-gas treatment technical field.

Background

The thermal destruction process is a process for directly and auxiliarily burning organic gases, i.e., VOCs, or accelerating the chemical reaction of VOCs by using a suitable catalyst to finally reduce the concentration of organic substances, so that the organic substances are no longer harmful.

The thermal destruction method has a good treatment effect on organic waste gas with low concentration, and therefore, is widely applied to treatment of low-concentration waste gas. This method is largely divided into two categories, direct flame combustion and catalytic combustion. The heat treatment efficiency of the direct flame combustion on the organic waste gas is relatively high and can reach 99 percent under general conditions. The catalytic combustion means that the chemical reaction speed of the organic waste gas is accelerated under the action of the catalytic bed layer. The method is less than that used in direct combustion, and is the first choice technology for purifying high-concentration and low-flow organic waste gas. However, this method requires frequent catalyst replacement and consumes a large amount of catalyst, which is often expensive, and when a large amount of VOCs exhaust gas with high concentration needs to be treated, the treatment effect is not ideal, and the treatment is not complete.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve and exist not enoughly among the prior art, provide a VOCs exhaust-gas treatment equipment that can carry out effective processing to high concentration, large-traffic VOCs waste gas.

The utility model discloses a realize through following technical scheme:

the utility model provides a VOCs waste gas treatment equipment, including the front and back consecutive hookup together draught fan one, the rose box, cyclone, the spray column, combustion box and heat exchanger, a filter screen has been inserted to the rose box inside, upper portion is equipped with the shower in the spray column, the inside intermediate position department of spray column is equipped with a baffle, there is the clearance on baffle and the top and the bottom of spray column all, shower and the water pump intercommunication of setting outside the spray column, the bottom department of spray column is equipped with the fluid-discharge tube, the inside entry end of combustion box is equipped with the air distribution board, combustion box is inside still to be equipped with an aeration pipe by entry end to exit end in proper order, two combustors and a catalyst bed, the aeration pipe is associative with the draught fan two that set up outside the combustion box.

The utility model discloses carry out the preliminary treatment before carrying out catalytic combustion to VOCs waste gas and handling, filter the large granule thing of VOCs waste gas the inside, filter the impurity that can be dissolved in water in the VOCs waste gas again, for subsequent catalytic combustion handles and alleviates the burden, improve high concentration, large-traffic treatment effect and treatment effeciency.

Further preferably, the two burners are disposed oppositely inside the combustion chamber.

Preferably, the pipeline between the burner and the spray tower and the pipeline between the burner and the heat exchanger are respectively provided with an explosion-proof combustion-supporting device.

Preferably, a cold water inlet is arranged on one side of the bottom end of the heat exchanger close to the inlet end, and a hot water outlet is arranged on one side of the bottom end of the heat exchanger close to the outlet end. And residual heat in the treated waste gas is recycled, so that resources are saved.

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

Drawings

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

In the figure: 1. a VOCs waste gas inlet; 2. a first induced draft fan; 3. a filter box; 4. filtering the screen; 5. a cyclone dust collector; 6. a spray tower; 7. a shower pipe; 8. a water pump; 9. a partition plate; 10. a liquid discharge pipe; 11. an explosion-proof combustion-supporting device; 12. a combustion box; 13. a wind distribution plate; 14. a second induced draft fan; 15. an aeration pipe; 16. a burner; 17. a catalyst bed; 18. a heat exchanger; 19. a cold water inlet; 20. a hot water outlet; 21. and (7) an exhaust port.

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1, a VOCs waste gas treatment device comprises a first induced draft fan 2, a filter box 3, a cyclone dust collector 5, a spray tower 6, a combustion box 12 and a heat exchanger 18 which are sequentially connected together from front to back, wherein a VOCs waste gas inlet 1 is arranged at the inlet end of the first induced draft fan 2, an exhaust port 21 is arranged at the outlet end of the heat exchanger 18, an explosion-proof combustion-supporting device 11 is respectively arranged on a pipeline between the combustor 16 and the spray tower 6 and a pipeline between the combustor 16 and the heat exchanger 18, a filter screen 4 is inserted in the filter box 3, a spray pipe 7 is arranged at the upper part in the spray tower 6, a partition plate 9 is arranged at the middle position in the spray tower 6, gaps are respectively arranged between the partition plate 9 and the top end and the bottom end of the spray tower 6, the spray pipe 7 is communicated with a water pump 8 arranged outside the spray tower 6, a liquid discharge pipe 10 is arranged at the bottom end of, an aeration pipe 15, two combustors 16 and a catalyst bed 17 are sequentially arranged in the combustion box 12 from the inlet end to the outlet end, the aeration pipe 15 is connected with a second induced draft fan 14 arranged outside the combustion box 12, the two combustors 16 are oppositely arranged in the combustion box 12, a cold water inlet 19 is arranged on one side, close to the inlet end, of the bottom end of the heat exchanger 18, and a hot water outlet 20 is arranged on one side, close to the outlet end, of the bottom end of the heat exchanger 18.

The working process is as follows:

under the action of a first induced draft fan 2, VOCs waste gas enters from a VOCs waste gas inlet 1, the waste gas enters a filter box 3 for coarse filtration, large particles in the waste gas are filtered, when more particles are accumulated on a filter screen 4, can be taken down for cleaning, the cyclone dust collector 5 is used for removing small particles in the waste gas, the spray tower 6 is used for removing water-soluble substances in the waste gas, and the waste gas passes through the spray pipe 7 twice, the spraying effect is better, then the waste gas enters the combustion box 12 for catalytic combustion treatment, the waste gas can uniformly enter the combustion box 12 by the air distribution plate 13, the aeration pipe 15 provides the required air for combustion, and the air can be uniformly mixed with the waste gas, then the waste gas is catalytically combusted, the waste gas after catalytic combustion enters the heat exchanger 18, cold water is introduced into the heat exchanger 18 to reuse heat in the exhaust gas, and finally the exhaust gas is discharged through the exhaust port 21.

In the description of the present invention, the terms "inside", "outside", "up", "down", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for convenience of description of the present invention and does not require the present invention to be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Claims

1. The utility model provides a VOCs exhaust-gas treatment equipment which characterized in that: comprises a first induced draft fan (2), a filter box (3), a cyclone dust collector (5), a spray tower (6), a combustion box (12) and a heat exchanger (18) which are sequentially connected together from front to back, wherein a filter screen (4) is inserted into the filter box (3), a spray pipe (7) is arranged at the upper part in the spray tower (6), a partition plate (9) is arranged at the middle position in the spray tower (6), gaps are reserved between the partition plate (9) and the top end and the bottom end of the spray tower (6), the spray pipe (7) is communicated with a water pump (8) arranged outside the spray tower (6), a liquid discharge pipe (10) is arranged at the bottom end of the spray tower (6), an air distribution plate (13) is arranged at the inlet end in the combustion box (12), an aeration pipe (15), two combustors (16) and a catalyst bed (17) are sequentially arranged from the inlet end to the outlet end in the combustion box (12), the aeration pipe (15) is connected with a second induced draft fan (14) arranged outside the combustion box (12).

2. A VOCs effluent treatment plant as claimed in claim 1, wherein: the two burners (16) are disposed opposite each other inside the combustion chamber (12).

3. A VOCs effluent treatment plant as claimed in claim 1, wherein: an explosion-proof combustion-supporting device (11) is respectively arranged on the pipeline between the combustor (16) and the spray tower (6) and the pipeline between the combustor (16) and the heat exchanger (18).

4. A VOCs effluent treatment plant as claimed in claim 1, wherein: a cold water inlet (19) is arranged on one side of the bottom end of the heat exchanger (18) close to the inlet end, and a hot water outlet (20) is arranged on one side of the bottom end of the heat exchanger (18) close to the outlet end.