A vinyltrichlorosilane synthesis device

Abstract

The invention discloses a vinyl trichlorosilane synthesis device, comprising a reaction tank, a vaporization mechanism on the reaction tank, a conveying mechanism, a synthesis mechanism, an exhaust mechanism and a top cover plate mounted on the top wall of the reaction tank, the reaction tank is provided with a mounting groove surrounding the top wall, the bottom wall of the top cover plate is fixedly bonded with a rubber ring mounted in the mounting groove and arranged in an annular shape, the vaporization mechanism comprises a vaporization component and a positioning component, and the synthesis mechanism comprises a synthesis tank, a condenser mounted on one side of the outer wall of the synthesis tank, a temperature measurement component and a heat dissipation component. The vinyl trichlorosilane synthesis device, when the temperature is too high, a controller drives the first fan to work and quickly discharges the heat on the extended copper plate to the outside through a heat exhaust pipe, so that rapid cooling can be performed, and the temperature is detected in real time, and cooling is stopped when the temperature reaches an intermediate value, effectively controlling the cooling process and reducing the escape of vaporized trichlorosilane and other gases.

Description

Technical Field

[0001] The invention belongs to the technical field of vinyltrichlorosilane synthesis, and particularly relates to a vinyltrichlorosilane synthesis device. Background Art

[0002] Vinyl trichlorosilane is a chemical with the molecular formula CH2=CHSiCl3. It can be used for: 1. Synthesis of various other vinyl silicone coupling agents; 2. Modification of chlorine-containing resins (such as polyvinyl chloride, etc.), or copolymerization with chlorine-containing monomers; 3. The A-150 on it has unsaturated groups and active chlorine radicals, which are violently hydrolyzed in water to form corresponding silanols, and is suitable for use as a glass fiber surface treatment agent and a treatment agent for reinforced plastic laminates to improve the mechanical strength, heat resistance and moisture resistance of the products; 4. It is suitable for the surface treatment of glass fibers, and can improve the adhesion, heat resistance and water resistance of glass fibers with unsaturated polyesters, epoxy resins, acrylic resins, etc.

[0003] Vinyl trichlorosilane needs to be synthesized in a designated device, and its synthesis method can generally be a thermal addition method. Existing devices for synthesizing vinyl trichlorosilane do not have an active heat dissipation device for the synthesis tank (usually passive heat dissipation), resulting in low heat dissipation efficiency and failure to control the temperature of the synthesis tank within a designated range in time. Therefore, vaporized trichlorosilane (and other gases) will escape due to the inability to react quickly; usually acetylene gas is added through a pipe at one time, resulting in the added acetylene gas being unable to disperse and mix with vaporized trichlorosilane, resulting in uneven mixing of the two, which will cause an increase in side reactions in subsequent reactions. Summary of the invention

[0004] The object of the present invention is to provide a vinyltrichlorosilane synthesis device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a vinyltrichlorosilane synthesis device, comprising a reaction tank, a vaporization mechanism, a conveying mechanism, a synthesis mechanism, an exhaust mechanism and a top cover plate mounted on the top wall of the reaction tank, the reaction tank is provided with a mounting groove surrounding its top wall, a rubber ring is fixedly bonded to the bottom wall of the top cover plate and is mounted in the mounting groove and arranged in an annular shape, the vaporization mechanism comprises a vaporization component and a positioning component, and the synthesis mechanism comprises a synthesis tank, a condenser mounted on one side of the outer wall of the synthesis tank, a temperature measuring component and a heat dissipation component.

[0006] Preferably, the vaporization assembly includes a vaporization generation tank, a quantitative dropper arranged vertically and connected to the vaporization generation tank, and a plurality of first ventilation pipes obliquely passing through the side wall of the reaction tank and connected to the vaporization generation tank;

[0007] One end of each group of the first ventilation pipes extending out of the reaction tank is covered with a rubber sleeve.

[0008] Preferably, the positioning assembly includes a water reservoir, a metal heating element installed on the bottom wall of the inner cavity of the water reservoir, two groups of bonding blocks respectively bonded to both sides of the inner wall of the water reservoir and in contact with the outer wall of the vaporization generation tank, and a heat-insulating bottom plate bonded to the bottom wall of the water reservoir and welded to the inner wall of the reaction tank;

[0009] One side of the water reservoir is fixedly connected with an addition pipe which penetrates the side wall of the reaction tank and extends to the outside, and a silicone plug is clamped at the opening of the addition pipe.

[0010] Preferably, the delivery mechanism comprises a delivery pipe and a multi-component flow pipe;

[0011] The plurality of groups of manifolds divide the delivery pipe into two parts, and a connecting block is sleeved and bonded at the position where each group of manifolds contacts each part of the delivery pipe.

[0012] Preferably, the top cover plate is provided with a plurality of groups of second ventilation pipes passing through two sides thereof and respectively connected with the plurality of flow pipes, and a rubber sleeve is sleeved at the opening of each group of the second ventilation pipes.

[0013] Preferably, the bottom wall of the synthesis tank is connected to a discharge pipe which is opened and closed by a solenoid valve and passes through the bottom wall of the reaction tank;

[0014] The temperature measuring assembly comprises a protruding tube installed on one side of the outer wall of the synthesis tank, a control box installed on the outer wall of the reaction tank, and a display screen inlaid on the outer side of the control box;

[0015] A temperature and humidity sensor is installed inside the protruding tube, and a controller is arranged inside the control box.

[0016] Preferably, the heat dissipation assembly includes a copper ring surrounding the outer wall of the synthesis tank and fitting the synthesis tank, an extended copper plate welded to the copper ring, a heat exhaust pipe in a U shape and penetrating the side wall of the reaction tank, and a first fan installed in the heat exhaust pipe;

[0017] One end of the extended copper plate extends into the heat exhaust pipe and is welded thereto, and the temperature and humidity sensor, the first fan and the display screen are all electrically connected to the controller.

[0018] Preferably, the exhaust mechanism comprises an exhaust pipe penetrating the bottom wall of the reaction tank and two sets of symmetrically inclined exhaust pipes on the top cover plate;

[0019] The second fan is installed in the air outlet pipe and the two groups of air inlet pipes.

[0020] Preferably, the two groups of air intake pipes pass through both sides of the top cover plate and are welded and fixed thereto, and a closing plate is clamped at the sealing portion of the top of each group of air intake pipes.

[0021] The technical effects and advantages of the present invention are as follows: the vinyl trichlorosilane synthesis device is provided with a synthesis mechanism, the temperature and humidity sensor of the synthesis mechanism works in real time and detects the temperature in the synthesis tank. When the temperature is too high, the heat of the synthesis tank is transferred to the extended copper plate through the copper ring, and the controller drives the first fan to work and quickly discharges the heat on the extended copper plate to the outside through the heat exhaust pipe, so that rapid cooling can be performed, and the temperature is detected in real time. When the temperature reaches the middle value, the cooling is stopped, the cooling process is effectively controlled, and the escape of vaporized trichlorosilane and other gases is reduced; by providing a plurality of first ventilation pipes, second ventilation pipes and distribution pipes, the first ventilation pipes, second ventilation pipes and distribution pipes are provided, and the second ... The acetylene gas added once is sent to the vaporization generation tank through multiple groups of first ventilation pipes and dispersed, and preliminarily mixed with vaporized trichlorosilane. Then, the acetylene gas added for the second time is sent to the multiple groups of flow pipes through multiple groups of second ventilation pipes respectively, so that the vaporized trichlorosilane and acetylene gas are mixed for the second time, so that the mixing is more uniform, so that the reaction is more thorough, and the occurrence of side reactions is reduced; by setting an exhaust mechanism, the three groups of second fans of the exhaust mechanism work to suck the outside air into the reaction tank, and the vaporized trichlorosilane and other gases remaining in the reaction tank are discharged to the outside through the exhaust pipe, thereby reducing the residual gas in the reaction tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a vertical cross-sectional view of the present invention;

[0023] Figure 2 is a vertical cross-sectional view of the conveying mechanism of the present invention;

[0024] Figure 3 is a vertical cross-sectional view of the vaporization mechanism of the present invention;

[0025] Figure 4 A vertical cross-sectional view of a partial structure of the synthesis mechanism of the present invention;

[0026] Figure 5 It is a circuit connection diagram of the present invention.

[0027] In the figure: 1. reaction tank; 2. water reservoir; 3. metal heating element; 4. bonding block; 5. insulation bottom plate; 6. adding tube; 7. silicone plug; 8. vaporization generation tank; 9. first ventilation pipe; 10. rubber sleeve; 11. quantitative dropper; 12. delivery pipe; 13. shunt pipe; 14. connecting block; 15. second ventilation pipe; 16. synthesis tank; 17. discharge pipe; 18. condenser; 19. copper ring; 20. extended copper plate; 21. heat exhaust pipe; 22. first fan; 23. protruding pipe; 24. outlet pipe; 25. inlet pipe; 26. second fan; 27. closing plate; 28. display screen; 29. ​​top cover plate; 30. rubber ring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] The present invention provides Figure 1-5 A vinyltrichlorosilane synthesis device shown in the figure comprises a reaction tank 1, a vaporization mechanism, a conveying mechanism, a synthesis mechanism, an exhaust mechanism and a top cover plate 29 mounted on the top wall of the reaction tank 1, the reaction tank 1 is provided with a mounting groove surrounding its top wall, a rubber ring 30 is fixedly bonded to the bottom wall of the top cover plate 29 and is engaged in the mounting groove and arranged in an annular shape, the vaporization mechanism comprises a vaporization component and a positioning component, the synthesis mechanism comprises a synthesis tank 16, a condenser 18 mounted on one side of the outer wall of the synthesis tank 16, a temperature measuring component and a heat dissipation component, a heating component is arranged in the inner cavity of the synthesis tank 16, and an electric heating pipe (which is the prior art) can be selected, and the electric heating pipe can heat the temperature in the synthesis tank 16 to between 75 and 85 degrees Celsius.

[0030] Specifically, the vaporization assembly includes a vaporization generation tank 8, a vertically arranged quantitative dropper 11 connected to the vaporization generation tank 8, and a plurality of groups of first ventilation pipes 9 obliquely passing through the side wall of the reaction tank 1 and connected to the vaporization generation tank 8. One end of each group of first ventilation pipes 9 extending into the inner side of the vaporization generation tank 8 leads to different directions, so that the acetylene gas added at one time can be dispersed in the vaporization generation tank 8.

[0031] One end of each group of the first ventilation pipes 9 extending out of the reaction tank 1 is covered with a rubber sleeve 10, and the rubber sleeve 10 is connected to a pipeline for adding acetylene gas.

[0032] Specifically, the positioning assembly includes a water reservoir 2, a metal heating element 3 installed on the bottom wall of the inner cavity of the water reservoir 2, two groups of bonding blocks 4 respectively bonded to both sides of the inner wall of the water reservoir 2 and in contact with the outer wall of the vaporization generation tank 8, and a heat-insulating bottom plate 5 bonded to the bottom wall of the water reservoir 2 and welded to the inner wall of the reaction tank 1. The water reservoir 2 contains a proper amount of water, and the water contacts the bottom wall of the vaporization generation tank 8 over a large area, which is conducive to faster heat transfer to the vaporization generation tank 8. The working principle of the metal heating element 3 is the same as the working principle of the "fast heat" in the prior art, that is, it can generate heat when powered on;

[0033] One side of the water reservoir 2 is fixedly connected with an addition pipe 6 that penetrates the side wall of the reaction tank 1 and extends to the outside, and a silicone plug 7 is clamped at the opening of the addition pipe 6.

[0034] Specifically, the conveying mechanism includes a conveying pipe 12 and a multi-component flow pipe 13;

[0035] The plurality of shunt pipes 13 divide the delivery pipe 12 into two parts, and a connection block 14 is set and bonded at the position where each shunt pipe 13 contacts each part of the delivery pipe 12. The setting of the connection block 14 makes the shunt pipe 13 and the delivery pipe 12 more stable.

[0036] Specifically, the top cover plate 29 is provided with a plurality of groups of second ventilation pipes 15 passing through both sides thereof and respectively connected with the plurality of flow pipes 13, and a rubber sleeve 10 is sleeved at the opening of each group of second ventilation pipes 15, and the rubber sleeve 10 is connected to the pipeline for secondary addition of acetylene gas.

[0037] Specifically, the bottom wall of the synthesis tank 16 is connected to a discharge pipe 17 which is opened and closed by a solenoid valve and penetrates the bottom wall of the reaction tank 1;

[0038] The temperature measuring assembly includes a protruding tube 23 installed on one side of the outer wall of the synthesis tank 16, a control box installed on the outer wall of the reaction tank 1, and a display screen 28 embedded on the outer side of the control box;

[0039] A temperature and humidity sensor is installed inside the protruding tube 23, and a controller is arranged in the control box. The model of the temperature and humidity sensor can be VMS-WS-485-1, and the model of the controller can be S7-200.

[0040] Specifically, the heat dissipation assembly includes a copper ring 19 surrounding the outer wall of the synthesis tank 16 and fitting with the synthesis tank 16, an extended copper plate 20 welded to the copper ring 19, a heat exhaust pipe 21 in a U shape and penetrating the side wall of the reaction tank 1, and a first fan 22 installed in the heat exhaust pipe 21;

[0041] One end of the extended copper plate 20 extends into the heat exhaust pipe 21 and is welded thereto. The temperature and humidity sensor, the first fan 22 and the display screen 28 are all electrically connected to the controller.

[0042] Specifically, the exhaust mechanism includes an exhaust pipe 24 penetrating the bottom wall of the reaction tank 1 and two sets of symmetrically inclined exhaust pipes 25 on the top cover plate 29;

[0043] The second fan 26 is installed in the air outlet pipe 24 and the two groups of air inlet pipes 25. The opening and closing of the air outlet pipe 24 and the air inlet pipe 25 are controlled by electromagnetic valves.

[0044] Specifically, the two groups of air intake pipes 25 pass through both sides of the top cover plate 29 and are welded and fixed thereto, and a sealing plate 27 is clamped at the sealing portion of the top of each group of air intake pipes 25 .

[0045] Working principle: the vinyl trichlorosilane synthesis device first adds chlorobenzene and a reaction catalyst (the catalyst can be selected from metal VIII) into the synthesis tank 16, and passes condensed water into the condenser 18 for standby use; the metal heating element 3 is powered on and works to heat the water in the water reservoir 2, so that the water temperature is controlled at 50-65 degrees Celsius; a sufficient amount of trichlorosilane liquid is added to the quantitative dropper 11, and then the rubber ring 30 at the bottom of the top cover plate 29 is engaged in the mounting groove on the top wall of the reaction tank 1;

[0046] The trichlorosilane liquid in the quantitative dropper 11 will be quantitatively dripped into the vaporization generation tank 8, and at the same time, multiple sets of pipes for adding acetylene gas at one time are connected to the rubber sleeves 10 of multiple sets of first ventilation pipes 9, and the acetylene gas added at one time is passed into various places of the inner cavity of the vaporization generation tank 8 through the multiple sets of first ventilation pipes 9, and the acetylene gas is dispersed in the inner cavity of the vaporization generation tank 8; after the trichlorosilane is dripped into the vaporization generation tank 8, it will be vaporized due to the high temperature of the water reservoir 2 itself, and the vaporized trichlorosilane will enter the delivery pipe 12 together with the acetylene gas (added at one time) mixed with it;

[0047] The pipelines for adding acetylene gas for the second time are respectively connected to the rubber sleeves 10 of the multiple groups of second ventilation pipes 15, so that the vaporized trichlorosilane and the acetylene gas added once are mixed with the acetylene gas added for the second time in the multiple group manifolds 13, and the mixed gases are finally mixed on the other side of the delivery pipe 12 (the acetylene gas added together accounts for 70% of the total added amount, and the acetylene gas added for the second time accounts for 30% of the total added amount), so that the gas entering the synthesis tank 16 is mixed more evenly, and the temperature of the reactor is raised to 75-85 degrees Celsius. In this temperature range, vinyl trichlorosilane can be generated, and the vaporized trichlorosilane and the generated vinyl trichlorosilane are condensed in the condenser 18, and the discharge pipe 17 is controlled by the solenoid valve to open, so that the condensed vinyl trichlorosilane can be discharged;

[0048] The temperature and humidity sensor in the protruding tube 23 detects the temperature in the synthesis tank 16 in real time. When the heat in the synthesis tank 16 accumulates and the temperature exceeds 85 degrees Celsius, the temperature and humidity sensor transmits an electrical signal to the controller, and the controller drives the display screen 28 to work and display the temperature (the temperature of the synthesis tank 16 is gradually transferred to the copper ring 19). The controller drives the first fan 22 to work to suck the outside air into the heat exhaust pipe 21 and blow it to the extended copper plate 20, so that the heat transferred from the copper ring 19 to the extended copper plate 20 is gradually dissipated. Due to the active heat dissipation design, the heat dissipation efficiency is high, and the temperature can be quickly controlled at about 80 degrees Celsius (the middle value of 75 and 85 degrees Celsius);

[0049] After the reaction is completed, the solenoid valve controls the outlet pipe 24 and the two sets of inlet pipes 25 to open, the two sets of sealing plates 27 are removed, and the three sets of second fans 26 are driven to work, so that the outside air is sucked into the reaction tank 1 from the two sets of inlet pipes 25, and the gas leaked in the reaction tank 1 is discharged to the outside through the outlet pipe 24 through air circulation.

[0050] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vinyltrichlorosilane synthesis device, comprising a reaction tank (1), a vaporization mechanism, a conveying mechanism, a synthesis mechanism, an exhaust mechanism on the reaction tank (1), and a top cover plate (29) mounted on the top wall of the reaction tank (1), characterized in that: The reaction tank (1) is provided with a mounting groove surrounding its top wall, and a rubber ring (30) is fixedly bonded to the bottom wall of the top cover plate (29) and is engaged in the mounting groove and arranged in an annular shape. The vaporization mechanism comprises a vaporization component and a positioning component, and the synthesis mechanism comprises a synthesis tank (16), a condenser (18) mounted on one side of the outer wall of the synthesis tank (16), a temperature measurement component, and a heat dissipation component. The top cover plate (29) is provided with a plurality of groups of second ventilation pipes (15) passing through both sides thereof and respectively communicating with the plurality of flow pipes (13), and a rubber sleeve (10) is sleeved at the opening of each group of second ventilation pipes (15); The vaporization assembly comprises a vaporization generation tank (8), a quantitative dropper (11) arranged vertically and connected to the vaporization generation tank (8), and a plurality of groups of first ventilation pipes (9) obliquely passing through the side wall of the reaction tank (1) and connected to the vaporization generation tank (8), wherein one end of each group of first ventilation pipes (9) extending into the inner side of the vaporization generation tank (8) leads to a different direction.

2. A vinyltrichlorosilane synthesis device according to claim 1, characterized in that: One end of each group of the first ventilation pipes (9) extending out of the reaction tank (1) is sleeved with a rubber sleeve (10).

3. A vinyltrichlorosilane synthesis device according to claim 2, characterized in that: The positioning assembly comprises a water reservoir (2), a metal heating element (3) mounted on the bottom wall of the inner cavity of the water reservoir (2), two groups of bonding blocks (4) respectively bonded to the two sides of the inner wall of the water reservoir (2) and in contact with the outer wall of the vaporization generation tank (8), and a heat-insulating bottom plate (5) bonded to the bottom wall of the water reservoir (2) and welded to the inner wall of the reaction tank (1); One side of the water reservoir (2) is fixedly connected to an addition pipe (6) that penetrates the side wall of the reaction tank (1) and extends to the outside, and a silicone plug (7) is clamped at the opening of the addition pipe (6).

4. A vinyltrichlorosilane synthesis device according to claim 1, characterized in that: The conveying mechanism comprises a conveying pipe (12) and a multi-component flow pipe (13); The plurality of groups of manifolds (13) divide the delivery pipe (12) into two parts, and a connecting block (14) is sleeved and bonded at the position where each group of manifolds (13) contacts each part of the delivery pipe (12).

5. A vinyltrichlorosilane synthesis device according to claim 1, characterized in that: The bottom wall of the synthesis tank (16) is connected to a discharge pipe (17) which is opened and closed by a solenoid valve and penetrates the bottom wall of the reaction tank (1); The temperature measuring assembly comprises a protruding tube (23) installed on one side of the outer wall of the synthesis tank (16), a control box installed on the outer wall of the reaction tank (1), and a display screen (28) inlaid on the outer side of the control box; A temperature and humidity sensor is installed inside the protruding tube (23), and a controller is arranged inside the control box.

6. A vinyltrichlorosilane synthesis device according to claim 5, characterized in that: The heat dissipation assembly comprises a copper ring (19) surrounding the outer wall of the synthesis tank (16) and fitting the synthesis tank (16), an extended copper plate (20) welded to the copper ring (19), a heat exhaust pipe (21) in a U shape and penetrating the side wall of the reaction tank (1), and a first fan (22) installed in the heat exhaust pipe (21); One end of the extended copper plate (20) extends into the heat exhaust pipe (21) and is welded thereto, and the temperature and humidity sensor, the first fan (22) and the display screen (28) are all electrically connected to the controller.

7. A vinyltrichlorosilane synthesis device according to claim 1, characterized in that: The exhaust mechanism comprises an exhaust pipe (24) penetrating the bottom wall of the reaction tank (1) and two groups of exhaust pipes (25) symmetrically and obliquely arranged on the top cover plate (29); A second fan (26) is installed in the air outlet pipe (24) and the two groups of air inlet pipes (25).

8. A vinyltrichlorosilane synthesis device according to claim 7, characterized in that: The two groups of air intake pipes (25) both penetrate the two sides of the top cover plate (29) and are welded and fixed thereto, and a sealing plate (27) is clamped at the sealing portion of the top of each group of air intake pipes (25).

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