Continuous adsorption column for methyltrichlorosilane production

Abstract

The utility model discloses a continuous adsorption tower for methyltrichlorosilane production, including shell subassembly, the upper front end of shell subassembly is installed steam delivery subassembly, and the left and right ends of steam delivery subassembly are connected with adsorption subassembly, the inside of adsorption subassembly is provided with filter assembly, steam delivery subassembly includes steam pipe, second solenoid valve, nitrogen tube and third solenoid valve, and the second solenoid valve is installed on steam pipe, the front end of steam pipe is installed with nitrogen tube, and the third solenoid valve is installed on nitrogen tube. Compared with the existing ordinary continuous adsorption tower, the device can adjust the filtering effect according to the steam condition, thereby ensuring that the device can keep good filtering effect for a long time. The device uses pressure to push the material, which can bring silica gel particles into the liquid feed, maximizing the effect of silica gel particles.

Description

Technical Field

[0001] This utility model relates to the field of methyltrichlorosilane production technology, specifically to a continuous adsorption tower for methyltrichlorosilane production. Background Technology

[0002] The research on key technologies for the purification of methyltrichlorosilane using structured packing in continuous adsorption towers for methyltrichlorosilane production refers to the study of efficient purification techniques for methyltrichlorosilane by using a continuous adsorption tower as the main equipment and optimizing relevant process parameters through the application of special structured packing. This research aims to improve the separation effect of methyltrichlorosilane from impurities by utilizing the unique structure and properties of structured packing, such as specific specific surface area, pore structure, and surface chemical properties. By first performing primary adsorption on industrial-grade methyltrichlorosilane, and then passing its vapor into a distillation tower packed with structured packing for secondary adsorption, dual adsorption purification of methyltrichlorosilane is achieved.

[0003] Existing adsorption towers purify the material through the entire process during operation. This requires replacing the purification material after a period of operation, which affects the purification efficiency of the equipment and cannot meet people's needs. To address this issue, technological innovation is needed based on the existing continuous adsorption towers. Utility Model Content

[0004] The purpose of this invention is to provide a continuous adsorption tower for the production of methyltrichlorosilane, so as to solve the problem mentioned in the background art that the general adsorption tower cannot well meet people's needs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a continuous adsorption tower for the production of methyltrichlorosilane, comprising a shell assembly, a steam conveying assembly installed at the upper front end of the shell assembly, and adsorption assemblies connected to the left and right ends of the steam conveying assembly, a filter assembly disposed inside the adsorption assembly, the steam conveying assembly comprising a steam pipe, a second solenoid valve, a nitrogen pipe and a third solenoid valve, the second solenoid valve being installed on the steam pipe, a nitrogen pipe being installed at the front end of the steam pipe, and a third solenoid valve being installed on the nitrogen pipe.

[0006] Furthermore, a stirring assembly is installed inside the outer shell assembly, a feeding assembly is installed at the upper rear end of the outer shell assembly, and a liquid inlet assembly is connected to one side of the feeding assembly.

[0007] Furthermore, the outer casing assembly includes an evaporating shell, a guide rod, and a heating resistor, with the guide rod installed on the inner wall of the evaporating shell and the heating resistor installed on the lower interior of the evaporating shell.

[0008] Furthermore, the stirring assembly includes a motor, a rotating rod, and stirring blades, with the rotating end of the motor connected to the rotating rod and the lower end of the rotating rod fitted with stirring blades.

[0009] Furthermore, the liquid inlet assembly includes an inlet pipe, a float plate, and a first solenoid valve, with the lower end of the inlet pipe connected to the float plate and the first solenoid valve installed on the inlet pipe.

[0010] Furthermore, the feeding assembly includes a storage bin, an upper cover, a piston plate, an adding pipe, and a connecting pipe. The upper cover is installed on the upper end of the storage bin, the piston plate is installed inside the storage bin, and the adding pipe is connected to the rear of the lower end of one side of the storage bin. The connecting pipe is installed at the front end of one side of the storage bin.

[0011] Furthermore, the adsorption assembly includes an adsorption tower body, a discharge pipe, and a fourth solenoid valve, and a discharge pipe is installed on one side of the adsorption tower body, and a fourth solenoid valve is installed on the discharge pipe.

[0012] Furthermore, the filter assembly includes a filter partition plate, an upper cover plate, an upper outlet, and a fifth solenoid valve. The upper cover plate is disposed above the filter partition plate, the upper outlet is installed above the upper cover plate, and the fifth solenoid valve is installed on the upper outlet.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the equipment can adjust the filtration effect according to the steam conditions, thereby ensuring that the equipment can maintain a good filtration effect for a long time. The equipment adopts a pressure-driven material feeding method, which can bring the silica gel particles in when the liquid is fed, so as to maximize the effect of the silica gel particles. 1. This utility model divides the adsorption component into multiple areas by using a filter component. This allows the number of filter components that open to be controlled according to the purity of the steam, thereby ensuring that the equipment can achieve the maximum purification effect. At the same time, the equipment will increase the number of filter components that open according to the usage time, thereby maximizing the working time of an adsorption component. In addition, the second solenoid valve enables the two adsorption components to work alternately. When one adsorption component is purifying, the nitrogen pipe will introduce high-pressure and high-temperature nitrogen into the adsorption component to clean the inside of the adsorption component and discharge the adsorbed material from the adsorption component under high pressure. 2. This utility model uses an addition tube to fill the storage tank with methyltrichlorosilane liquid, thereby pushing the piston plate upward. This pushes the silica gel particles on the piston plate upward, bringing them closer to the liquid inlet pipe. This allows the equipment to better carry the silica gel particles into the evaporation shell for preliminary purification while simultaneously feeding the liquid. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic cross-sectional view of the outer shell assembly of this utility model; Figure 3 This is an enlarged cross-sectional view of the feeding assembly of this utility model; Figure 4 This is a schematic cross-sectional view of the adsorption component of this utility model.

[0015] In the diagram: 1. Outer shell assembly; 101. Evaporation shell; 102. Guide rod; 103. Heating resistor; 2. Stirring assembly; 201. Motor; 202. Rotating rod; 203. Stirring blade; 3. Liquid inlet assembly; 301. Liquid inlet pipe; 302. Float plate; 303. First solenoid valve; 4. Feeding assembly; 401. Storage tank; 402. Top cover; 403. Piston plate; 404. Addition pipe; 405. Conductor pipe; 5. Steam conveying assembly; 501. Steam pipe; 502. Second solenoid valve; 503. Nitrogen pipe; 504. Third solenoid valve; 6. Adsorption assembly; 601. Adsorption tower body; 602. Discharge pipe; 603. Fourth solenoid valve; 7. Filter assembly; 701. Filter dividing plate; 702. Top cover plate; 703. Top outlet; 704. Fifth solenoid valve. Detailed Implementation

[0016] like Figure 1 and Figure 4 As shown, a continuous adsorption tower for the production of methyltrichlorosilane includes an outer shell assembly 1. A steam conveying assembly 5 is installed at the upper front end of the outer shell assembly 1, and adsorption assemblies 6 are connected to the left and right ends of the steam conveying assembly 5. A filter assembly 7 is installed inside the adsorption assembly 6. The steam conveying assembly 5 includes a steam pipe 501, a second solenoid valve 502, a nitrogen pipe 503, and a third solenoid valve 504. The second solenoid valve 502 is installed on the steam pipe 501, and a nitrogen pipe 503 is installed at the front end of the steam pipe 501. The third solenoid valve 504 is installed on the nitrogen pipe 503. The adsorption component 6 is divided into multiple areas by the filter component 7. This allows the number of filter components 7 to be opened to be controlled according to the purity of the steam, thereby ensuring that the equipment can achieve the maximum purification effect. At the same time, the equipment will increase the number of filter components 7 to be opened according to the usage time, thereby maximizing the working time of one adsorption component 6. In addition, the second solenoid valve 502 enables the two adsorption components 6 to work alternately. When one adsorption component 6 is performing purification work, the nitrogen pipe 503 will introduce high-pressure and high-temperature nitrogen into the adsorption component 6 to clean the inside of the adsorption component 6 and discharge the adsorbed material during purification from the adsorption component 6 under high pressure.

[0017] like Figure 2 and Figure 3As shown, a stirring assembly 2 is installed inside the outer shell assembly 1, a feeding assembly 4 is installed at the upper rear end of the outer shell assembly 1, and a liquid inlet assembly 3 is connected to one side of the feeding assembly 4.

[0018] like Figure 2 As shown, the outer casing assembly 1 includes an evaporator shell 101, a guide rod 102 and a heating resistor 103, and the guide rod 102 is installed on the inner wall of the evaporator shell 101, and the heating resistor 103 is installed on the lower part of the interior of the evaporator shell 101. The heating resistor 103 can heat the liquid inside the evaporator shell 101 to form steam, and the guide rod 102 guides the float plate 302 to prevent the float plate 302 from swaying and floating.

[0019] like Figure 2 As shown, the stirring assembly 2 includes a motor 201, a rotating rod 202 and a stirring blade 203, and the rotating end of the motor 201 is connected to the rotating rod 202, and the lower end of the rotating rod 202 is equipped with the stirring blade 203. The floating plate 302 is fitted over the rotating rod 202, but there is no direct connection between the floating plate 302 and the rotating rod 202.

[0020] like Figure 2 As shown, the liquid inlet assembly 3 includes a liquid inlet pipe 301, a float plate 302 and a first solenoid valve 303, and the lower end of the liquid inlet pipe 301 is connected to the float plate 302, and the first solenoid valve 303 is installed on the liquid inlet pipe 301. The floating plate 302 covers the liquid surface, which can effectively prevent the liquid from forming foam during injection. At the same time, it can also prevent the floating angle of the liquid surface from being too large during stirring, so as to prevent air from entering and forming foam.

[0021] like Figure 3 As shown, the feeding assembly 4 includes a storage bin 401, an upper cover 402, a piston plate 403, an adding pipe 404, and a connecting pipe 405. The upper cover 402 is installed on the upper end of the storage bin 401, the piston plate 403 is provided inside the storage bin 401, the adding pipe 404 is connected to the rear of the lower end of one side of the storage bin 401, and the connecting pipe 405 is installed on the front end of one side of the storage bin 401. Methyltrichlorosilane liquid is added to the storage tank 401 through the addition pipe 404, thereby pushing the piston plate 403 upward. This pushes the silica gel particles on the piston plate 403 upward, bringing them closer to the liquid inlet pipe 301. This allows the equipment to better carry the silica gel particles into the evaporation shell 101 for preliminary purification while the liquid is being added.

[0022] like Figure 4As shown, the adsorption assembly 6 includes an adsorption tower body 601, a discharge pipe 602 and a fourth solenoid valve 603, and the discharge pipe 602 is installed on one side of the adsorption tower body 601, and the fourth solenoid valve 603 is installed on the discharge pipe 602.

[0023] The filter assembly 7 includes a filter partition plate 701, an upper cover plate 702, an upper outlet 703, and a fifth solenoid valve 704. The upper cover plate 702 is disposed above the filter partition plate 701, the upper outlet 703 is installed above the upper cover plate 702, and the fifth solenoid valve 704 is installed on the upper outlet 703.

[0024] Working principle: When using this continuous adsorption tower for methyltrichlorosilane production, first open the upper cover 402, fill the storage tank 401 with silica gel granules, then close the upper cover 402, and then open the first solenoid valve 303. Methyltrichlorosilane liquid is then introduced into the storage tank 401 through the adding pipe 404. The liquid is transported to the top of the storage tank 401 through the connecting pipe 405, thereby filling the silica gel granules into the inlet pipe 301. The liquid and silica gel granules then enter the area below the floating plate 302 simultaneously. Then, the motor 201 is turned on to drive the rotating rod 202 to rotate. The sliding stirring blade 203 stirs the liquid and silica gel particles inside the evaporation shell 101, allowing the silica gel particles to make good contact with the liquid and adsorb and precipitate some impurities inside the liquid. After a certain precipitation time, the heating resistor 103 heats the inside of the evaporation shell 101 to vaporize the methyltrichlorosilane liquid into steam. Then, one of the second solenoid valves 502 is opened, allowing the steam to be transported to the adsorption tower body 601 through the steam pipe 501. The steam is filtered through a special structured packing material between the filter partition plate 701 and the upper cover plate 702. Initially, the fifth solenoid valve 704 can be opened one by one to control the number of filter components 7 in use. Based on sampling and the filtration effect, the final number of filter components 7 to be used is determined. After a certain period of filtration, more filter components 7 are added, and the fourth solenoid valve 603 on the corresponding discharge pipe 602 opens, allowing steam to be discharged directly after purification by the corresponding filter component 7. This ensures good filtration by the filter components 7. After all filter components 7 inside the adsorption tower 601 are used, another second solenoid valve 502 is opened to use another set of adsorption components 6 and filter components 7. After use, the third solenoid valve 504 of the adsorption component 6 opens, allowing the nitrogen pipe 503 to fill the adsorption component 6 with high-temperature, high-pressure nitrogen, purifying the special structured packing material on the filter partition plate 701, enabling continuous operation of the equipment.

Claims

1. A continuous adsorption tower for the production of methyltrichlorosilane, characterized in that, The device includes a housing assembly (1), a steam delivery assembly (5) is installed at the upper front end of the housing assembly (1), and an adsorption assembly (6) is connected to the left and right ends of the steam delivery assembly (5). A filter assembly (7) is provided inside the adsorption assembly (6). The steam delivery assembly (5) includes a steam pipe (501), a second solenoid valve (502), a nitrogen pipe (503) and a third solenoid valve (504). The second solenoid valve (502) is installed on the steam pipe (501), the nitrogen pipe (503) is installed at the front end of the steam pipe (501), and the third solenoid valve (504) is installed on the nitrogen pipe (503).

2. The continuous adsorption tower for the production of methyltrichlorosilane according to claim 1, characterized in that, The shell assembly (1) is equipped with a stirring assembly (2), and a feeding assembly (4) is installed at the upper rear end of the shell assembly (1). A liquid feeding assembly (3) is connected to one side of the feeding assembly (4).

3. The continuous adsorption tower for the production of methyltrichlorosilane according to claim 2, characterized in that, The outer shell assembly (1) includes an evaporating shell (101), a guide rod (102) and a heating resistor (103), and the guide rod (102) is installed on the inner wall of the evaporating shell (101), and the heating resistor (103) is installed on the lower part of the interior of the evaporating shell (101).

4. The continuous adsorption tower for the production of methyltrichlorosilane according to claim 2, characterized in that, The stirring assembly (2) includes a motor (201), a rotating rod (202) and a stirring blade (203), and the rotating end of the motor (201) is connected to the rotating rod (202), and the lower end of the rotating rod (202) is equipped with a stirring blade (203).

5. The continuous adsorption tower for the production of methyltrichlorosilane according to claim 2, characterized in that, The liquid inlet assembly (3) includes a liquid inlet pipe (301), a float plate (302) and a first solenoid valve (303), and the lower end of the liquid inlet pipe (301) is connected to the float plate (302), and the first solenoid valve (303) is installed on the liquid inlet pipe (301).

6. The continuous adsorption tower for the production of methyltrichlorosilane according to claim 2, characterized in that, The feeding assembly (4) includes a storage bin (401), an upper cover (402), a piston plate (403), an adding pipe (404), and a connecting pipe (405). The upper cover (402) is installed on the upper end of the storage bin (401). The piston plate (403) is provided inside the storage bin (401). The adding pipe (404) is connected to the rear of the lower end of one side of the storage bin (401). The connecting pipe (405) is installed on the front end of one side of the storage bin (401).

7. The continuous adsorption tower for the production of methyltrichlorosilane according to claim 1, characterized in that, The adsorption assembly (6) includes an adsorption tower body (601), a discharge pipe (602) and a fourth solenoid valve (603), and a discharge pipe (602) is installed on one side of the adsorption tower body (601), and a fourth solenoid valve (603) is installed on the discharge pipe (602).

8. The continuous adsorption tower for the production of methyltrichlorosilane according to claim 1, characterized in that, The filter assembly (7) includes a filter partition plate (701), an upper cover plate (702), an upper outlet (703), and a fifth solenoid valve (704). The upper cover plate (702) is provided above the filter partition plate (701), the upper outlet (703) is installed above the upper cover plate (702), and the fifth solenoid valve (704) is installed on the upper outlet (703).

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