VOCs treatment device for benzene tail gas produced by diphenylethane

Abstract

The utility model discloses a device for treating VOCs (volatile organic compounds) in benzene tail gas produced by diphenylethane, which comprises a base, a sealing cover is mounted on the base, a corrugated pipe is mounted on a transfer pipe, the tail end of the transfer pipe is connected with the bottom end of a combustion tank, an exhaust pipe is mounted at the top end of the combustion tank, and an oxygen pipe is fixed at the bottom of the inner wall of the combustion tank. An oxygen pipe is fixed on the side wall of the combustion tank, an oxygen nozzle is mounted on the oxygen pipe, an igniter is mounted on the side wall of the combustion tank above the oxygen pipe, a combustion-supporting gas pipe is fixed on the inner wall of the combustion tank above the igniter, and a combustion-supporting gas nozzle is mounted on the combustion-supporting gas pipe. According to the treatment device for VOCs in the benzene tail gas produced by diphenylethane, novel structural design is adopted, physical adsorption, microbial decomposition and combustion treatment are reasonably combined, the benzene tail gas is efficiently treated, comprehensive adsorption, decomposition and reaction of benzene are achieved, adsorption and decomposition fillers can be conveniently replaced, and the treatment device is convenient to operate and low in cost. And it is ensured that the device can stably treat benzene tail gas for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of VOCs treatment, in particular to a VOCs treatment device for benzene tail gas in diphenylethane production. Background Technique

[0002] During the production process of diphenylethane, benzene tail gas will be generated. As a toxic and carcinogenic chemical substance, if the tail gas is directly discharged into the environment without treatment, it will have a serious impact on human health and the environment. Therefore, scientific and effective methods are needed for benzene tail gas treatment to ensure that benzene in the tail gas is effectively removed and meets environmental protection standards.

[0003] Existing benzene tail gas VOCs treatment devices generally adopt a single treatment method, such as adsorbent adsorption or microbial packing decomposition. And in order to reduce costs, the treatment process is short, which not only has a poor treatment effect on benzene tail gas, but also requires frequent replacement of adsorbents to ensure the adsorption effect. Therefore, it is necessary to design a VOCs treatment device for benzene tail gas in diphenylethane production in view of the above problems. Summary of the Invention

[0004] The purpose of the utility model is to provide a VOCs treatment device for benzene tail gas in diphenylethane production, so as to solve the problems mentioned in the above background technique that existing benzene tail gas VOCs treatment devices generally adopt a single treatment method, such as adsorbent adsorption or microbial packing decomposition, and in order to reduce costs, the treatment process is short, which not only has a poor treatment effect on benzene tail gas, but also requires frequent replacement of adsorbents to ensure the adsorption effect.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A VOCs treatment device for benzene tail gas in diphenylethane production, including a base, a sealing cover is installed on the base, an air inlet pipe is fixedly penetrated through the middle of the base, a first mesh frame and a second mesh frame are installed on the inner wall of the sealing cover, activated carbon filter material is arranged in the first mesh frame, microbial packing is arranged in the second mesh frame, a transfer pipe is installed at the top of the sealing cover, a corrugated pipe is installed on the transfer pipe, the end of the transfer pipe is connected to the bottom end of a combustion tank, an exhaust pipe is installed at the top of the combustion tank, an oxygen pipe is fixedly installed at the bottom of the inner wall of the combustion tank, an oxygen nozzle is installed on the oxygen pipe, an igniter is installed on the side wall of the combustion tank above the oxygen pipe, a combustion-supporting gas pipe is fixedly installed on the inner wall of the combustion tank above the igniter, and a combustion-supporting gas nozzle is installed on the combustion-supporting gas pipe.

[0006] Preferably, the first mesh frame and the second mesh frame have the same size, and the first mesh frame and the second mesh frame are alternately and equidistantly distributed in the sealing cover.

[0007] Preferably, the diameter of the transfer pipe is smaller than the diameter of the air inlet pipe, and the length of the corrugated pipe installed on the transfer pipe is not less than the thickness of the base.

[0008] Preferably, the diameter of the exhaust pipe is smaller than that of the transfer pipe, and the distance from the bottom end of the exhaust pipe to the top end of the combustion-supporting gas pipe is greater than half of the overall height of the combustion tank.

[0009] Preferably, both the oxygen pipe and the combustion-supporting gas pipe are arranged in a ring shape, and the oxygen pipe and the combustion-supporting gas pipe are symmetrically distributed above and below the igniter.

[0010] Preferably, the oxygen nozzles and the combustion-supporting gas nozzles are evenly distributed at equal angles on the oxygen pipe and the combustion-supporting gas pipe respectively. The oxygen nozzles are distributed obliquely upward, and the combustion-supporting gas nozzles are distributed obliquely downward.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: The benzene tail gas VOCs treatment device for diphenylethane production adopts a novel structural design, reasonably combines three methods of physical adsorption, microbial decomposition and combustion treatment, efficiently treats benzene tail gas, realizes comprehensive adsorption, decomposition and reaction of benzene, and both the adsorption and decomposition fillers can be conveniently replaced, ensuring that the device can stably treat benzene tail gas for a long time;

[0012] 1. Through the activated carbon filter material and microbial filler filled in the first wire frame and the second wire frame respectively, benzene tail gas is fully adsorbed and microbially decomposed. Through the diameter difference and height design of the intake pipe and the transfer pipe, it is ensured that the gas can stay in the sealing cover for a long time, ensuring sufficient time for adsorption and microbial decomposition. At the same time, the design of the corrugated pipe facilitates the movement of the front end of the transfer pipe when the sealing cover is disassembled, facilitating the replacement of the activated carbon filter material and the microbial filler;

[0013] 2. The combustion-supporting gas ejected from the combustion-supporting gas nozzle is ignited by the igniter, and oxygen is supplied in cooperation with the oxygen nozzles, so that the remaining benzene in the gas after adsorption and microbial decomposition is fully burned, ensuring the treatment effect on the tail gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a front view structural schematic diagram of the present utility model;

[0015] Figure 2 is a front view sectional structural schematic diagram of the present utility model;

[0016] Figure 3 is a bottom view sectional structural schematic diagram of the first wire frame of the present utility model;

[0017] Figure 4 is a top view structural schematic diagram of the oxygen pipe and the oxygen nozzles of the present utility model.

[0018] In the figure: 1. Base; 2. Sealing cover; 3. Inlet pipe; 4. First mesh frame; 5. Second mesh frame; 6. Activated carbon filter material; 7. Microbial packing material; 8. Transfer pipe; 9. Bellows; 10. Combustion tank; 11. Exhaust pipe; 12. Oxygen pipe; 13. Oxygen nozzle; 14. Igniter; 15. Combustion-supporting gas pipe; 16. Combustion-supporting gas nozzle. Specific implementation mode

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1-4 , the present invention provides a technical solution: a device for treating benzene tail gas VOCs in diphenylethane production, including a base 1, a sealing cover 2, an inlet pipe 3, a first mesh frame 4, a second mesh frame 5, an activated carbon filter material 6, a microbial packing material 7, a transfer pipe 8, a bellows 9, a combustion tank 10, an exhaust pipe 11, an oxygen pipe 12, an oxygen nozzle 13, an igniter 14, a combustion-supporting gas pipe 15 and a combustion-supporting gas nozzle 16. The sealing cover 2 is installed on the base 1, the inlet pipe 3 is fixedly penetrated through the middle of the base 1, the first mesh frame 4 and the second mesh frame 5 are installed on the inner wall of the sealing cover 2, the activated carbon filter material 6 is arranged in the first mesh frame 4, the microbial packing material 7 is arranged in the second mesh frame 5, the transfer pipe 8 is installed at the top of the sealing cover 2, the bellows 9 is installed on the transfer pipe 8, the end of the transfer pipe 8 is connected to the bottom end of the combustion tank 10, the exhaust pipe 11 is installed at the top of the combustion tank 10, the oxygen pipe 12 is fixedly installed at the bottom of the inner wall of the combustion tank 10, the oxygen nozzle 13 is installed on the oxygen pipe 12, the igniter 14 is installed on the side wall of the combustion tank 10 above the oxygen pipe 12, the combustion-supporting gas pipe 15 is fixedly installed on the inner wall of the combustion tank 10 above the igniter 14, and the combustion-supporting gas nozzle 16 is installed on the combustion-supporting gas pipe 15.

[0021] In this example, the first mesh frame 4 and the second mesh frame 5 have the same size, and the first mesh frame 4 and the second mesh frame 5 are alternately and equally spaced in the sealing cover 2. The above structural design enables the activated carbon filter material 6 and the microbial packing material 7 in the first mesh frame 4 and the second mesh frame 5 to be in full contact with the benzene tail gas.

[0022] The diameter of the transfer pipe 8 is smaller than that of the inlet pipe 3, and the length of the bellows 9 installed on the transfer pipe 8 is not less than the thickness of the base 1. The above structural design can extend the retention time of the benzene tail gas in the sealing cover 2, ensure the adsorption and microbial decomposition effects, and at the same time, the design of the bellows 9 ensures that the transfer pipe 8 will not hinder the disassembly of the sealing cover 2.

[0023] The diameter of the exhaust pipe 11 is smaller than that of the transfer pipe 8, and the distance from the bottom end of the exhaust pipe 11 to the top end of the combustion-supporting gas pipe 15 is greater than half of the overall height of the combustion tank 10. The above structural design ensures that the benzene tail gas can stay in the combustion tank 10 for a long time to achieve the effect of full combustion.

[0024] Both the oxygen pipe 12 and the combustion-supporting gas pipe 15 are arranged in a ring shape, and the oxygen pipe 12 and the combustion-supporting gas pipe 15 are symmetrically distributed up and down with respect to the igniter 14. The above structural design enables the oxygen pipe 12 and the combustion-supporting gas pipe 15 to supply oxygen and combustion-supporting gas comprehensively, and ensures that the combustion-supporting gas can be quickly ignited by the igniter 14 without accumulating and causing deflagration.

[0025] The oxygen nozzles 13 and the combustion-supporting gas nozzles 16 are distributed at equal angles on the oxygen pipe 12 and the combustion-supporting gas pipe 15 respectively. The oxygen nozzles 13 are distributed obliquely upward, and the combustion-supporting gas nozzles 16 are distributed obliquely downward. The above structural design ensures that the combustion-supporting gas and benzene can burn fully and evenly.

[0026] Working principle: When using this device, the benzene tail gas enters the sealing cover 2 through the inlet pipe 3, and the benzene tail gas flows upward through the first mesh frames 4 and the second mesh frames 5 which are alternately distributed at equal intervals, and comes into full contact with the activated carbon filter material 6 and the microbial packing 7, and is adsorbed and decomposed by microorganisms. The sealing cover 2 can be disassembled regularly to replace the activated carbon filter material 6 and the microbial packing 7;

[0027] Subsequently, the benzene tail gas enters the combustion tank 10 through the transfer pipe 8. The air pumps connected to the oxygen pipe 12 and the combustion-supporting gas pipe 15 spray oxygen and combustion-supporting gas through the oxygen nozzles 13 and the combustion-supporting gas nozzles 16 respectively. The igniter 14 works to ignite the combustion-supporting gas and burn the benzene tail gas entering the combustion tank 10, and the burned gas is discharged through the exhaust pipe 11. This is the working principle of the benzene tail gas VOCs treatment device for diphenylethane production.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A VOCs treatment device for tail gas from the production of benzene using diphenylethane, comprising a base (1), characterized in that: A sealing cover (2) is installed on the base (1), an air intake pipe (3) is fixedly passed through the middle of the base (1), a first mesh frame (4) and a second mesh frame (5) are installed on the inner wall of the sealing cover (2), an activated carbon filter material (6) is arranged in the first mesh frame (4), a microbial filler (7) is arranged in the second mesh frame (5), a transfer pipe (8) is installed on the top of the sealing cover (2), a corrugated pipe (9) is installed on the transfer pipe (8), and the end of the transfer pipe (8) is connected to the combustion tank (1). 0), an exhaust pipe (11) is installed at the top of the combustion tank (10), an oxygen pipe (12) is fixed to the bottom of the inner wall of the combustion tank (10), an oxygen nozzle (13) is installed on the oxygen pipe (12), an igniter (14) is installed on the side wall of the combustion tank (10) above the oxygen pipe (12), a combustion-supporting gas pipe (15) is fixed on the inner wall of the combustion tank (10) above the igniter (14), and a combustion-supporting gas nozzle (16) is installed on the combustion-supporting gas pipe (15).

2. The VOCs treatment device for tail gas from benzene produced by diphenylethane according to claim 1, characterized in that: The first mesh frame (4) and the second mesh frame (5) have the same size, and the first mesh frame (4) and the second mesh frame (5) are alternately and evenly spaced within the sealing cover (2).

3. The VOCs treatment device for tail gas from benzene produced by diphenylethane according to claim 1, characterized in that: The diameter of the transfer pipe (8) is smaller than the diameter of the air intake pipe (3), and the length of the bellows (9) installed on the transfer pipe (8) is not less than the thickness of the base (1).

4. The VOCs treatment device for tail gas from benzene produced by diphenylethane according to claim 1, characterized in that: The diameter of the exhaust pipe (11) is smaller than the diameter of the transfer pipe (8), and the distance from the bottom end of the exhaust pipe (11) to the top end of the combustion-supporting gas pipe (15) is greater than half the overall height of the combustion tank (10).

5. The VOCs treatment device for tail gas from benzene produced by diphenylethane according to claim 1, characterized in that: The oxygen tube (12) and the combustion-supporting gas tube (15) are both arranged in a ring shape, and the oxygen tube (12) and the combustion-supporting gas tube (15) are symmetrically distributed up and down with respect to the igniter (14).

6. The VOCs treatment device for tail gas from benzene produced by diphenylethane according to claim 1, characterized in that: The oxygen nozzles (13) and the combustion-supporting gas nozzles (16) are respectively distributed at equal angles on the oxygen pipe (12) and the combustion-supporting gas pipe (15); the oxygen nozzles (13) are distributed obliquely upward, and the combustion-supporting gas nozzles (16) are distributed obliquely downward.

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