Tail gas treatment device for trimethylsilane production

Abstract

The utility model discloses a trimethylsilane production tail gas treatment device which comprises a treatment barrel, a plurality of supporting legs are fixedly arranged at the lower end of the treatment barrel, an upper cover is arranged at the upper end of the treatment barrel, a gas inlet pipe is fixedly arranged at the side end of the treatment barrel, an exhaust pipe is fixedly arranged on the upper cover, and a gas outlet pipe is fixedly arranged on the exhaust pipe. A cleaning structure is movably arranged in the treatment barrel, and the inner wall of the treatment barrel is cleaned through the cleaning structure; the cleaning structure comprises a first middle box, a first spray head and a scraping block, an electric push rod is fixedly arranged on the upper cover, a moving plate is connected to the electric push rod, the cleaning structure is arranged on the moving plate, a recycling structure is arranged at the lower end of the treatment barrel, and the recycling structure comprises a collecting box, a heat accumulator and a cover plate. And waste liquid and heat are recycled through the recycling structure.

Description

Technical Field

[0001] The utility model relates to the field of trimethylsilane production, and more specifically, to a tail gas treatment device for trimethylsilane production. Background Art

[0002] Trimethylsilane is an important chemical raw material and plays a relatively important role in industrial production. In the industrial production of trimethylsilane, it is generally obtained by reacting dimethylsilane dichloride with hydrogen in the presence of a catalyst. Hydrogen chloride gas is also produced in the reaction product. Therefore, when the tail gas generated in the production of trimethylsilane is discharged, a tail gas treatment device is required to treat the tail gas. The existing tail gas treatment device generally neutralizes the hydrogen chloride gas generated by the reaction by spraying sodium hydroxide solution. At the same time, dust and other particulate matter will be mixed in the production process of trimethylsilane. The particulate matter will adhere to the inner wall of the tail gas treatment equipment after rain, which is inconvenient to clean. The accumulation of dust affects the purification effect of the tail gas treatment device on the tail gas. At the same time, there is a certain amount of heat in the tail gas of trimethylsilane, and heat will also be generated when the sodium hydroxide solution reacts with hydrogen chloride. In the process of treating the tail gas, the heat of the existing tail gas treatment device will be lost in the air with the discharge of the tail gas, and the heat cannot be fully utilized. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the problems existing in the prior art, the utility model provides a tail gas treatment device for trimethylsilane production to solve the technical problems mentioned in the background technology.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tail gas treatment device for trimethylsilane production, comprising a treatment barrel, a support leg is fixedly provided at the lower end of the treatment barrel, and a plurality of the support legs are provided, an upper cover is provided at the upper end of the treatment barrel, an air inlet pipe is fixedly provided at the side end of the treatment barrel, an exhaust pipe is fixedly provided on the upper cover, a cleaning structure is movably provided inside the treatment barrel, and the inner wall of the treatment barrel is cleaned by the cleaning structure;

[0007] The cleaning structure includes a first intermediate box, a first nozzle and a scraper block. An electric push rod is fixedly arranged on the upper cover, and a movable plate is connected to the electric push rod. The cleaning structure is arranged on the movable plate. A recovery structure is arranged at the lower end of the processing barrel. The recovery structure includes a collection box, a heat storage body and a cover plate. Waste liquid and heat are recovered through the recovery structure.

[0008] The utility model is further configured such that a plurality of the first nozzles are provided, the first nozzles are fixedly provided on a movable plate, a connecting column is provided on the movable plate, the first intermediate box is fixedly connected to the connecting column, the scraper block is provided on the outer side of the movable plate, and the scraper block cooperates with the processing barrel to form the entire cleaning structure.

[0009] The utility model is further configured such that the first intermediate box is connected to the first nozzle, a first connecting pipe is fixedly provided on the first intermediate box, the first connecting pipe is connected to the first intermediate box, the first connecting pipe passes through the upper cover, and the first connecting pipe is connected to an external water supply device.

[0010] The utility model is further configured as follows: a support frame is fixedly provided on the upper end of the movable plate, a connecting frame is fixedly provided on the support frame, the electric push rod and the connecting frame are fixedly connected, a second nozzle is fixedly provided on the support frame, a plurality of the second nozzles are provided, and the sodium hydroxide solution is sprayed through the second nozzle.

[0011] The utility model is further configured as follows: a second intermediate box is arranged between the support frame and the connecting frame, an intermediate pipe is arranged between the second intermediate box and the second nozzle, a plurality of groups of intermediate pipes are arranged, and the second intermediate box is connected to the plurality of second nozzles through the intermediate pipes, thereby facilitating the sodium hydroxide solution in the second intermediate box to enter the second nozzle.

[0012] The utility model is further configured that a second connecting pipe is fixedly provided on the second intermediate box, the second connecting pipe is communicated with the second intermediate box, and the second connecting pipe is connected to a device for providing sodium hydroxide solution from the outside.

[0013] The utility model is further configured such that a drain pipe is fixedly provided at the lower end of the processing barrel, the cover plate is sleeved and installed on the drain pipe, the collecting box is arranged at the lower end of the cover plate, the collecting box and the cover plate are bolted together, and the heat storage body is arranged inside the collecting box, so that the heat in the waste liquid is absorbed by the heat storage body.

[0014] The utility model is further configured such that a drain port is provided at a side end of the collection box, a through pipe is fixedly provided on the collection box, a plurality of the through pipes are provided, all of the through pipes pass through the heat storage body, and are connected to an external heat demanding device through the through pipes, and the heat in the heat storage body is absorbed by the heat-conducting medium in the through pipes.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a tail gas treatment device for trimethylsilane production, which has the following beneficial effects:

[0017] 1. The utility model arranges a first nozzle and a first intermediate box on a movable plate. The first intermediate box is connected to an external water supply device through a first connecting pipe. After the exhaust gas treatment is completed, when the inner wall of the treatment barrel is cleaned, the movable plate moves along the inner wall of the treatment barrel, and the first nozzle sprays the water in the first intermediate box onto the inner wall of the collection box. The dust particles adhering to the inner wall of the treatment barrel are scraped off through the contact between the scraper block and the inner wall of the treatment barrel, thereby completing the cleaning of the inner wall of the treatment barrel, facilitating the long-term use of the entire exhaust gas treatment device and enhancing the exhaust gas treatment effect.

[0018] 2. The utility model sets a collecting box at the lower end of the treatment barrel, adds water into the treatment barrel, and makes the water cover the air inlet pipe. When the tail gas enters the water through the air inlet pipe, the heat in the tail gas is absorbed by the water, and the hydrogen chloride gas in the tail gas is absorbed at the same time. The sodium hydroxide solution sprayed by the second nozzle reacts with the hydrogen chloride in the water, and the heat generated by the reaction is retained in the water, so that a large amount of heat is retained in the water in the treatment barrel. After the tail gas treatment is completed, the tail gas enters the collecting box through the drain pipe, and the heat in the water is absorbed by the heat storage body in the collecting box. The heat in the heat storage body is absorbed by the heat-conducting medium in the pipe, and the heat is transferred to the heat-requiring structure, thereby completing the collection and use of heat and reducing energy waste.

[0019] 3. The utility model treats the tail gas by adding water in the treatment barrel. The water covers the air inlet pipe. When purifying the tail gas, the water first absorbs the water-soluble substances in the tail gas, thereby reducing the particulate matter and a large amount of hydrogen chloride gas in the tail gas. At the same time, the waste water is collected by setting a collection box, which is convenient for the unified treatment of the waste water, thereby facilitating the full purification of the tail gas generated by the production of trimethylsilane. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a tail gas treatment device for trimethylsilane production;

[0021] Figure 2 This is a schematic diagram of the matching structure of an upper cover and a treatment barrel of a tail gas treatment device for trimethylsilane production;

[0022] Figure 3 This is a schematic diagram of the structure of a moving plate of a tail gas treatment device for trimethylsilane production;

[0023] Figure 4 This is a schematic diagram of the bottom structure of a moving plate of a tail gas treatment device for trimethylsilane production;

[0024] Figure 5 This is a schematic diagram of the structure of a collection box of a tail gas treatment device for trimethylsilane production.

[0025] In the figure: 1. treatment barrel; 2. supporting legs; 3. upper cover; 4. air inlet pipe; 5. exhaust pipe; 6. first intermediate box; 7. first nozzle; 8. scraper block; 9. electric push rod; 10. moving plate; 11. collecting box; 12. heat storage body; 13. cover plate; 14. connecting column; 15. first connecting pipe; 16. supporting frame; 17. connecting frame; 18. second nozzle; 19. second intermediate box; 20. intermediate pipe; 21. second connecting pipe; 22. drain pipe; 23. drain outlet; 24. through pipe. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0028] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0029] See also Figure 1-5 A tail gas treatment device for trimethylsilane production includes a treatment barrel 1, a support leg 2 is fixedly provided at the lower end of the treatment barrel 1, a plurality of support legs 2 are provided, an upper cover 3 is provided at the upper end of the treatment barrel 1, an air inlet pipe 4 is fixedly provided at the side end of the treatment barrel 1, an exhaust pipe 5 is fixedly provided on the upper cover 3, and a cleaning structure is movably provided inside the treatment barrel 1;

[0030] The cleaning structure includes a first intermediate box 6, a first nozzle 7 and a scraper block 8. An electric push rod 9 is fixedly arranged on the upper cover 3. A movable plate 10 is connected to the electric push rod 9. The cleaning structure is arranged on the movable plate 10. A recovery structure is arranged at the lower end of the processing barrel 1. The recovery structure includes a collecting box 11, a heat storage body 12 and a cover plate 13.

[0031] In this embodiment, the processing barrel 1 and the upper cover 3 cooperate to form a closed structure, which is convenient for treating the tail gas, and the tail gas generated by the production of trimethylsilane is conveniently introduced into the processing barrel 1 through the air inlet pipe 4.

[0032] More specifically, the cleaning structure facilitates cleaning of the interior of the treatment barrel 1, and the recovery structure facilitates collection of waste water and utilization of heat.

[0033] See also Figure 1-Figure 5 As an implementation method for cleaning the inner wall of the treatment barrel 1: a plurality of first nozzles 7 are provided, the first nozzles 7 are fixedly provided on the movable plate 10, the movable plate 10 is provided with a connecting column 14, the first intermediate box 6 is fixedly connected to the connecting column 14, the scraper block 8 is provided on the outer side of the movable plate 10, the scraper block 8 and the treatment barrel 1 cooperate with each other, the first intermediate box 6 is communicated with the first nozzle 7, the first intermediate box 6 is fixedly provided with a first connecting pipe 15, the first connecting pipe 15 is communicated with the first intermediate box 6, the first connecting pipe 15 passes through the upper cover 3, and a support frame is fixedly provided on the upper end of the movable plate 10 16, a connecting frame 17 is fixedly arranged on the support frame 16, the electric push rod 9 is fixedly connected to the connecting frame 17, a second nozzle 18 is fixedly arranged on the support frame 16, and a plurality of second nozzles 18 are arranged, a second intermediate box 19 is arranged between the support frame 16 and the connecting frame 17, an intermediate pipe 20 is arranged between the second intermediate box 19 and the second nozzle 18, and a plurality of intermediate pipes 20 are arranged, the second intermediate box 19 is connected to the plurality of second nozzles 18 through the intermediate pipe 20, a second connecting pipe 21 is fixedly arranged on the second intermediate box 19, and the second connecting pipe 21 is connected to the second intermediate box 19;

[0034] Specifically, after the exhaust gas treatment is completed, when the inner wall of the treatment barrel 1 is cleaned, the connecting frame 17 is connected to the electric push rod 9, and the extension of the electric push rod 9 drives the movable plate 10 to move along the inner wall of the treatment barrel 1, and the first nozzle 7 sprays the water in the first intermediate box 6 onto the inner wall of the collecting box 11. The scraper block 8 provided on the side end of the movable plate 10 contacts the inner wall of the treatment barrel 1 to scrape off the dust particles adhering to the inner wall of the treatment barrel 1, thereby completing the cleaning of the inner wall of the treatment barrel 1.

[0035] Please refer to Figure 1-5 As an implementation method for waste liquid recovery: a drain pipe 22 is fixedly provided at the lower end of the treatment barrel 1, a cover plate 13 is sleeved and installed on the drain pipe 22, a collection box 11 is provided at the lower end of the cover plate 13, the collection box 11 and the cover plate 13 are bolted together, a heat storage body 12 is provided inside the collection box 11, a drain port 23 is provided at the side end of the collection box 11, a through pipe 24 is fixedly provided on the collection box 11, a plurality of through pipes 24 are provided, and the through pipes 24 all pass through the heat storage body 12;

[0036] Specifically, the water in the treatment barrel 1 retains a large amount of heat. When the exhaust gas treatment is completed, the exhaust gas enters the collection box 11 through the drain pipe 22. The heat in the water is absorbed by the heat storage body 12 in the collection box 11, and the heat in the heat storage body 12 is absorbed by the heat-conducting medium in the pipe 24, and the heat is transferred to the heat-requiring structure, thereby completing the collection and use of heat.

[0037] In summary, when used as a whole:

[0038] When treating the exhaust gas, water is added to the treatment barrel 1 so that the water covers the intake pipe 4. When the exhaust gas enters the water through the intake pipe 4, the water absorbs the heat in the exhaust gas, and at the same time absorbs the hydrogen chloride gas and dust in the exhaust gas. The second connecting pipe 21 provided on the second intermediate box 19 is connected to a device for providing sodium hydroxide solution from the outside. The sodium hydroxide solution sprayed by the second nozzle 18 provided on the support frame 16 of the movable plate 10 reacts with the hydrogen chloride in the water. While the hydrogen chloride is neutralized, the heat generated by the reaction is retained in the water.

[0039] When the exhaust gas treatment is completed, the exhaust gas enters the collecting box 11 through the drain pipe 22, and the heat in the water is absorbed by the heat storage body 12 in the collecting box 11. The heat in the heat storage body 12 is absorbed by the heat-conducting medium in the pipe 24, and the heat is transferred to the heat-requiring structure, thereby completing the collection and use of heat.

[0040] When the exhaust gas treatment is completed and the inner wall of the treatment barrel 1 is cleaned, the connecting frame 17 is connected to the electric push rod 9, and the extension of the electric push rod 9 drives the movable plate 10 to move along the inner wall of the treatment barrel 1, and the first nozzle 7 sprays the water in the first intermediate box 6 onto the inner wall of the collecting box 11. The scraper block 8 provided on the side end of the movable plate 10 contacts the inner wall of the treatment barrel 1 to scrape off the dust particles adhering to the inner wall of the treatment barrel 1, thereby completing the cleaning of the inner wall of the treatment barrel 1.

[0041] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A tail gas treatment device for trimethylsilane production, comprising a treatment barrel (1), characterized in that: A supporting leg (2) is fixedly provided at the lower end of the processing barrel (1), and a plurality of supporting legs (2) are provided; an upper cover (3) is provided at the upper end of the processing barrel (1); an air inlet pipe (4) is fixedly provided at the side end of the processing barrel (1); an exhaust pipe (5) is fixedly provided on the upper cover (3); and a cleaning structure is movably provided inside the processing barrel (1); The cleaning structure comprises a first intermediate box (6), a first nozzle (7) and a scraper (8); an electric push rod (9) is fixedly arranged on the upper cover (3); a movable plate (10) is connected to the electric push rod (9); the cleaning structure is arranged on the movable plate (10); a recovery structure is arranged at the lower end of the treatment barrel (1); the recovery structure comprises a collection box (11), a heat storage body (12) and a cover plate (13).

2. The tail gas treatment device for trimethylsilane production according to claim 1, characterized in that: A plurality of the first nozzles (7) are provided, and the first nozzles (7) are fixedly arranged on a movable plate (10). A connecting column (14) is provided on the movable plate (10). The first intermediate box (6) is fixedly connected to the connecting column (14). The scraper block (8) is arranged on the outer side of the movable plate (10), and the scraper block (8) cooperates with the processing barrel (1).

3. The tail gas treatment device for trimethylsilane production according to claim 2, characterized in that: The first intermediate box (6) is in communication with the first nozzle (7); a first connecting pipe (15) is fixedly provided on the first intermediate box (6); the first connecting pipe (15) is in communication with the first intermediate box (6); and the first connecting pipe (15) passes through the upper cover (3).

4. The tail gas treatment device for trimethylsilane production according to claim 1, characterized in that: A support frame (16) is fixedly arranged on the upper end of the movable plate (10), a connecting frame (17) is fixedly arranged on the support frame (16), the electric push rod (9) and the connecting frame (17) are fixedly connected, a second nozzle (18) is fixedly arranged on the support frame (16), and a plurality of second nozzles (18) are provided.

5. The tail gas treatment device for trimethylsilane production according to claim 4, characterized in that: A second intermediate box (19) is arranged between the support frame (16) and the connecting frame (17), an intermediate pipe (20) is arranged between the second intermediate box (19) and the second nozzle (18), a plurality of groups of the intermediate pipes (20) are arranged, and the second intermediate box (19) and the plurality of second nozzles (18) are connected via the intermediate pipes (20).

6. The tail gas treatment device for trimethylsilane production according to claim 5, characterized in that: A second connecting pipe (21) is fixedly arranged on the second intermediate box (19), and the second connecting pipe (21) is in communication with the second intermediate box (19).

7. The tail gas treatment device for trimethylsilane production according to claim 1, characterized in that: A drainage pipe (22) is fixedly arranged at the lower end of the treatment barrel (1); the cover plate (13) is sleeved and mounted on the drainage pipe (22); the collection box (11) is arranged at the lower end of the cover plate (13); the collection box (11) and the cover plate (13) are bolted together; and the heat storage body (12) is arranged inside the collection box (11).

8. The tail gas treatment device for trimethylsilane production according to claim 7, characterized in that: A drainage port (23) is provided at a side end of the collection box (11), and a through pipe (24) is fixedly provided on the collection box (11). A plurality of through pipes (24) are provided, and all of the through pipes (24) pass through the heat storage body (12).

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