Trimethylchlorosilane purification device

Abstract

The utility model relates to a trimethylchlorosilane purifying device, which is used for purifying trimethylchlorosilane and comprises a rectifying tower, a rectifying tower, a heating device and a heating device, the tower tray is arranged in the rectifying tower, and a plurality of tray holes are formed in the tower tray and are used for promoting gas-liquid two-phase contact and mass transfer; the plugging pieces are arranged above the corresponding disc holes; the adjusting assembly comprises an adjusting part and a support, the support is arranged at the bottom of the tower tray, the adjusting part is adjustably and movably arranged on the support, and the position of the plugging piece is adjusted through the adjusting part so as to change the number of the tray holes capable of introducing the gas-liquid two-phase medium. According to the trimethylchlorosilane purification device, the position of the plugging piece is adjusted through the adjusting part in the adjusting assembly, and a worker can adjust the opening or closing of the disc hole according to the actual situation in the testing stage, so that the liquid leakage phenomenon is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of purification devices, in particular to a trimethylchlorosilane purification device. Background Art

[0002] Trimethylchlorosilane is a colorless, transparent liquid with the pungent odor of hydrogen chloride. It is used as the basic raw material for synthesizing hexamethyldisiloxane and hexamethyldisilazane and is used in the production of hexamethyldisiloxane and hexamethyldisilazane.

[0003] Before trimethylchlorosilane is made into other synthetic substances, in order to ensure its purity meets the standard, a distillation tower is used to purify trimethylchlorosilane. The distillation tower uses distillation plates to separate and purify. Its working principle is to form multiple medium layers and use the physical properties between different layers for separation and purification.

[0004] In the use of the existing trimethylchlorosilane purification device, since the openings on the tower plates initially assembled in the distillation tower are fixed, when the gas phase gas flow is small, due to too many tower plate openings, part of the liquid will flow out from the openings, resulting in leakage in the distillation tower, that is, part of the liquid flows to the next tower plate without contacting the rising gas on the tower plate, thus, low-boiling point components that should not be left in the liquid are not evaporated, affecting the purification of trimethylchlorosilane. Therefore, a trimethylchlorosilane purification device is proposed to solve the above problem. Utility Model Content

[0005] Based on the above description, the utility model provides a trimethylchlorosilane purification device, which solves the technical problem that the existing trimethylchlorosilane purification device has serious liquid leakage and is easy to affect the purification of trimethylchlorosilane.

[0006] The utility model provides a technical solution to the above technical problems as follows: a trimethylchlorosilane purification device for purifying trimethylchlorosilane, comprising: a distillation tower; a tower plate, which is arranged in the distillation tower and has a plurality of plate holes on the tower plate to promote gas-liquid two-phase contact and mass transfer; a plugging piece, which is arranged above the corresponding plate holes; an adjusting component, which comprises an adjusting part and a bracket, wherein the bracket is arranged at the bottom of the tower plate, and the adjusting part is adjustably and movably arranged on the bracket, and the position of the plugging part is adjusted by the adjusting part to change the number of plates that can pass gas-liquid two-phase medium.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the adjusting component includes an adjusting member, a horizontal bar and a connecting rod, wherein the connecting rod connects the horizontal bar to the blocking member, and the horizontal height of the horizontal bar is adjusted by the adjusting member to adjust the horizontal height position of the blocking member.

[0009] Furthermore, the adjusting member is a bolt, which is threadedly connected to the bracket, and the upper end of the bolt can be rotatably connected to the bottom of the horizontal bar. By rotating the bolt, the horizontal height of the horizontal bar and the sealing member can be adjusted.

[0010] Furthermore, one end of the connecting rod away from the horizontal bar is fixed to the bottom of the blocking member.

[0011] Furthermore, one end of the connecting rod away from the horizontal bar passes through the sealing piece, and a spring is arranged between the sealing piece and the tower plate. The spring is used to support the sealing piece under normal conditions. When the liquid medium on the tower plate submerges the sealing piece, the sealing piece blocks the plate hole to reduce leakage.

[0012] Furthermore, a threaded surface is provided on the connecting rod, and a locking nut is threadedly connected through the threaded surface, and the locking nut is used to limit the floating of the sealing member.

[0013] Furthermore, the diameter of the plugging member is larger than the diameter of the disc hole, so that the disc hole is sealed after the plugging member is fitted onto the tower tray.

[0014] Furthermore, the tower plate includes a flow receiving portion, a tower plate and an overflow weir, and the plate holes are opened on the tower plate to promote gas-liquid two-phase contact and mass transfer.

[0015] Furthermore, the tower plate is made of one of ceramic, metal or plastic.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0017] The trimethylchlorosilane purification device adjusts the position of the plugging component by adjusting the adjusting component in the assembly. During the testing phase, the worker can adjust the opening or sealing of the disc hole according to the actual situation, thereby reducing liquid leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a trimethylchlorosilane purification device provided in an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of a half-section of an embodiment of the utility model;

[0020] Figure 3 It is a structural schematic diagram of a connecting rod and its connection structure in an embodiment of the utility model;

[0021] Figure 4 It is a schematic diagram of a blocking member and its connection structure in an embodiment of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the tower tray in the embodiment of the utility model;

[0023] Figure 6This is a schematic diagram of the structure of the adjustment component in the embodiment of the utility model;

[0024] Figure 7 for Figure 6 A partial enlarged schematic diagram of the middle A area;

[0025] Figure 8 for Figure 6 A schematic diagram of the structure from another perspective;

[0026] Fig. 9 It is a front view schematic diagram of the spring and its connection structure in the embodiment of the utility model.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1. Distillation tower; 11. Air outlet interface; 12. Reflux interface; 13. Feed interface; 14. Air inlet interface; 15. Discharge interface; 2. Tower plate; 21. Plate hole; 22. Flow receiving part; 23. Tower plate; 24. Overflow weir; 3. Sealing part; 4. Spring; 5. Adjustment assembly; 51. Adjustment component; 511. Adjustment part; 512. Cross bar; 513. Connecting rod; 52. Bracket; 6. Locking nut. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] like Figure 1-4 As shown, a trimethylchlorosilane purification device in this embodiment is used to purify trimethylchlorosilane, including a distillation tower 1, a tower tray 2, a plugging member 3 and an adjusting component 5, wherein a plurality of disk holes 21 are opened on the tower tray 2, and the disk holes 21 are used to promote gas-liquid two-phase contact and mass transfer, thereby completing the purification of trimethylchlorosilane, and the adjusting component 5 is used to adjust the horizontal height position of the plugging member 3. During operation, according to actual needs, the corresponding disk hole 21 is blocked by the corresponding plugging member 3 through the adjusting component 5, so that workers do not need to replace the tower tray 2, thereby reducing leakage.

[0031] It should be noted that the diameter of the plugging member 3 is larger than the diameter of the disk hole 21 , and the plugging member 3 and the disk hole 21 are coaxially arranged, so that after the plugging member 3 and the tower tray 2 are fitted together, the plugging member 3 can seal the disk hole 21 .

[0032] It should also be noted that the number of sealing members 3 is the same as the number of disk holes 21, and the tower plate 2 includes a flow receiving portion 22, a tower plate 23 and an overflow weir 24. The disk holes 21 are opened on the tower plate 23 to promote gas-liquid two-phase contact and mass transfer, and the tower plate 2 is one of ceramic, metal or plastic. In this embodiment, the tower plate 2 is preferably made of metal, such as alloy steel. In addition, the sealing members 3 are arranged above the corresponding disk holes 21, so that when the position is adjusted up and down, the corresponding disk holes 21 are blocked to reduce leakage.

[0033] For further explanation, the distillation tower 1 is provided with an air outlet interface 11, a reflux interface 12, a feed interface 13, an air inlet interface 14 and a discharge interface 15 from top to bottom, wherein the air outlet interface 11 is used to connect the condenser, the reflux interface 12 is used to connect the reflux, the condenser is connected to the reflux, the air inlet interface 14 is used to connect the reboiler, the discharge interface 15 is used for discharge and is used to be connected to the reboiler, and the condenser, reflux and reboiler are all visible in the figure.

[0034] Specifically, Figure 5 As shown, in this embodiment, the adjustment component 5 includes an adjustment part 51 and a bracket 52, wherein the bracket 52 is fixedly arranged at the bottom of the tower plate 2 by bolts to form a connection relationship between the tower plate 2 and the adjustment component 5, and the adjustment part 51 is adjustably and movably arranged on the bracket 52. During operation, the position of the sealing member 3 is adjusted by the adjustment part 51 to change the number of disc holes 21 that can pass the gas-liquid two-phase medium.

[0035] Furthermore, in this embodiment, the adjusting component 51 includes an adjusting member 511, a horizontal bar 512 and a connecting rod 513, wherein the connecting rod 513 connects the horizontal bar 512 to the sealing member 3, and the horizontal height of the horizontal bar 512 is adjusted by the adjusting member 511 to adjust the horizontal height position of the sealing member 3. When the sealing member 3 blocks the corresponding disc hole 21, leakage can be reduced.

[0036] It should be noted that the cross-section of the bracket 52 is U-shaped, and the horizontal bar 512 is slidably set between the two opposite side walls of the bracket 52. A limiting cavity is set on the two opposite side walls of the bracket 52. Both sides of the horizontal bar 512 are partially located in the limiting cavity. Through the limiting cavity, the horizontal bar 512 can only move up and down.

[0037] For further explanation, the adjusting member 511 is a bolt. It is understandable that the adjusting member 511 may also be, for example, an electric push rod or a cylinder, etc., and only needs to adjust the horizontal height of the horizontal bar 512 and the blocking member 3.

[0038] It should be noted that when the adjusting member 511 is a bolt, the bolt is threadedly connected to the bracket 52, and the upper end of the bolt can be rotatably connected to the bottom of the horizontal bar 512. For example, a disc is fixed to the upper end of the bolt, and a limiting cavity is opened at the bottom of the horizontal bar 512. The disc is rotatably connected in the limiting cavity, so that when the height of the upper end of the bolt changes, the horizontal bar 512 can change its height synchronously, and by rotating the bolt, the horizontal height of the horizontal bar 512 and the sealing member 3 can be adjusted.

[0039] During operation, when the adjusting member 511 is a bolt, the upper end of the adjusting bolt can be moved upward or downward by rotating the bolt. For example, if there is severe leakage during the test, the upper end of the bolt can be moved downward by rotating the bolt, and the horizontal bar 512 moves synchronously, and the connecting rod 513 drives the blocking member 3 to move synchronously. When the blocking member 3 blocks the corresponding disc hole 21, the leakage phenomenon is reduced.

[0040] In one embodiment, if Figure 5 As shown, one end of the connecting rod 513 away from the horizontal bar 512 is fixed to the bottom of the blocking member 3, so that the connecting rod 513 connects the horizontal bar 512 with the blocking member 3. When the adjusting member 511 is a bolt, the horizontal bar 512 and the connecting rod 513 can drive the blocking member 3 to move by rotating the bolt.

[0041] In another embodiment, if Figure 6-9 As shown, one end of the connecting rod 513 away from the horizontal bar 512 passes through the sealing member 3, and a spring 4 is provided between the sealing member 3 and the tower plate 2. The spring 4 is used to support the sealing member 3 under normal conditions. When the liquid medium on the tower plate 2 submerges the sealing member 3, the sealing member 3 receives pressure, the spring 4 contracts, and the sealing member 3 moves downward, so that the sealing member 3 blocks the plate hole 21 to reduce liquid leakage.

[0042] It should be noted that a threaded surface is provided on the connecting rod 513 , and a locking nut 6 is threadedly connected through the threaded surface. The locking nut 6 is used to limit the floating of the blocking member 3 .

[0043] During operation, when there is too much liquid medium on the tower plate 2, the blocking piece 3 will be submerged. When the blocking piece 3 is submerged, the liquid medium exerts pressure on the blocking piece 3, and the support of the spring 4 cannot keep the blocking piece 3 in place, that is, the pressure causes the blocking piece 3 to move downward, thereby blocking the upper opening of the plate hole 21. Only when the gas phase medium entering the plate hole 21 from the bottom of the tower plate 2 is sufficient to push the blocking piece 3 open, the gas phase continues to contact the liquid phase to complete the purification process. During this working process, the balanced displacement of the blocking piece 3 can reduce liquid leakage.

[0044] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A trimethylsilyl chloride purification device for purifying trimethylsilyl chloride, characterized in that: include: Distillation tower (1); A tower plate (2) is arranged in the distillation tower (1), and a plurality of plate holes (21) are provided on the tower plate (2) to promote gas-liquid two-phase contact and mass transfer; A blocking member (3) disposed above the corresponding disc hole (21); An adjustment assembly (5) comprising an adjustment component (51) and a bracket (52), wherein the bracket (52) is arranged at the bottom of the tower plate (2), and the adjustment component (51) is arranged on the bracket (52) in an adjustable and movable manner, and the position of the blocking member (3) is adjusted by the adjustment component (51) to change the number of plate holes (21) capable of passing gas-liquid two-phase medium; The adjusting component (51) comprises an adjusting member (511), a horizontal bar (512) and a connecting rod (513), wherein the connecting rod (513) connects the horizontal bar (512) and the blocking member (3), and the horizontal height of the horizontal bar (512) is adjusted by the adjusting member (511) to adjust the horizontal height position of the blocking member (3); The adjusting member (511) is a bolt, which is threadedly connected to the bracket (52), and the upper end of the bolt is rotatably connected to the bottom of the horizontal bar (512), and the horizontal height of the horizontal bar (512) and the blocking member (3) can be adjusted by rotating the bolt; One end of the connecting rod (513) away from the horizontal bar (512) passes through the blocking member (3), and a spring (4) is provided between the blocking member (3) and the tower tray (2). The spring (4) is used to support the blocking member (3) under normal conditions. When the liquid medium on the tower tray (2) submerges the blocking member (3), the blocking member (3) blocks the tray hole (21) to reduce liquid leakage.

2. A trimethylchlorosilane purification device according to claim 1, characterized in that: The connecting rod (513) is provided with a threaded surface, and a locking nut (6) is threadedly connected via the threaded surface. The locking nut (6) is used to limit the floating of the blocking member (3).

3. A trimethylchlorosilane purification device according to claim 1 or 2, characterized in that: The diameter of the blocking member (3) is greater than the diameter of the disc hole (21), and after the blocking member (3) is fitted onto the tower disc (2), the disc hole (21) is sealed.

4. A trimethylchlorosilane purification device according to claim 3, characterized in that: The tower tray (2) comprises a flow receiving portion (22), a tower plate (23) and an overflow weir (24); the tray holes (21) are provided on the tower plate (23) to promote gas-liquid two-phase contact and mass transfer.

5. A trimethylchlorosilane purification device according to claim 4, characterized in that: The tower plate (2) is made of one of ceramic, metal or plastic.

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