Rectification device for separating trichloroethylene and tetrachloroethylene

Abstract

The utility model discloses a rectifying device for separating trichloroethylene and tetrachloroethylene, which comprises a rectifying tower, an inner cavity is arranged in the rectifying tower, an adjustable mounting mechanism is arranged in the inner cavity, a plurality of contact mechanisms are mounted on the adjustable mounting mechanism, each contact mechanism comprises a tower plate, a flow guide pipe is arranged at the top of one side of each tower plate, and a plurality of flow guide holes are formed in the flow guide pipes. The top of the other side of the tower plate is fixedly connected with an overflow weir, and one side of the overflow weir is provided with a liquid discharging pipe. According to the rectification device for separating trichloroethylene and tetrachloroethylene, a liquid phase is blocked by an overflow weir and partially stays on a tower plate, a gas phase enters a gas outlet pipe from bottom to top and is discharged from a gas outlet hole to be in contact with the liquid phase, and in the process, the pressure of the flowing gas phase pushes a driving blade to rotate, and the driving blade rotates to drive a guide plate to rotate, so that the trichloroethylene and tetrachloroethylene are separated. The liquid phase is stirred and guided, so that the gas phase and the liquid phase are fully mixed and contacted, and the rectification effect of trichloroethylene and tetrachloroethylene can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to rectifying device technical field, concretely is the rectifying device of separating trichloroethylene and tetrachloroethylene. BACKGROUND

[0002] In the chemical production process, trichloroethylene and tetrachloroethylene are mixed together, and need to use rectifying device to separate the two, and the rectifying device generally adopts rectifying tower, and in the prior art, liquid phase and gas phase on the tray in the rectifying tower are not fully contacted, so that the rectification effect is not ideal.

[0003] For example, patent publication No. CN218392301U, specifically a rectifying tower for separating trichloroethylene and tetrachloroethylene, comprising an upper tower body and a lower tower body, a plurality of tower plates are installed in the upper tower body along the longitudinal direction, a tower plate weir is arranged on one side of the tower plate, the tower plate is installed through a fixed sliding rod and a wedge block, the tower plate can slide longitudinally along the fixed sliding rod, and the bottom of the tower plate is supported by the wedge block; a sliding hole is formed on the edge of the tower plate away from the tower plate weir, and the tower plate is slidably connected with the fixed sliding rod through the sliding hole; the fixed sliding rod is fixedly connected to the inner wall of the upper tower body in the vertical direction, and a plurality of adjusting holes are arranged on the fixed sliding rod at equal intervals; two fixed holes are arranged on the wedge block in a top-down manner, and the wedge block is installed on the side of the fixed sliding rod away from the tower wall of the upper tower body through a fixed bolt, the rectifying tower provided by the utility model can adjust the distance between the tower plates and the number of tower plates according to actual production, and ensure efficient operation of the rectification process, but there is still the problem that the liquid phase and the gas phase on the tower plate in the rectifying tower are not fully contacted, resulting in unsatisfactory rectification effect. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides a rectifying device for separating trichloroethylene and tetrachloroethylene, which solves the problem that the liquid phase and the gas phase on the tower plate in the rectifying tower are not fully contacted, resulting in unsatisfactory rectification effect.

[0005] To achieve the above purpose, the utility model realizes the following technical scheme: a rectifying device for separating trichloroethylene and tetrachloroethylene, comprising a rectifying tower, an inner cavity is arranged in the rectifying tower, an adjustable mounting mechanism is arranged in the inner cavity, and a plurality of contact mechanisms are mounted on the adjustable mounting mechanism;

[0006] The contact mechanism comprises a tray, a flow guide pipe is arranged at one side top of the tray, an overflow weir is fixedly connected to the other side top of the tray, a downcomer is arranged at one side of the overflow weir, a plurality of gas outlet pipes are fixedly connected to the top surface of the tray, a plurality of gas outlet holes are arranged in the side surface of each gas outlet pipe, a top cover is fixedly connected to the top end of each gas outlet pipe, a connecting shaft is rotatably connected to the inside of the top cover, a driving shaft is drivingly connected to the bottom end of the connecting shaft through a bevel gear pair, a driving blade is fixedly connected to the driving shaft, a plurality of connecting rods are fixedly connected to the bottom end of the connecting shaft, and a plurality of flow guide plates are fixedly connected to the bottom end of each connecting rod, and a plurality of liquid passing holes are arranged in the flow guide plates.

[0007] Preferably, the number of the tray is set to be multiple, and the multiple trays are uniformly distributed in the rectifying tower, so that the trichloroethylene and tetrachloroethylene can be separated conveniently, and the separation effect is improved.

[0008] Preferably, the flow guide pipes on the two adjacent trays correspond to the downcomers one by one, and the downcomers are fixedly installed on one side of the bottom of the tray, so that the liquid flowing down from the downcomer can flow to the tray through the flow guide pipe.

[0009] Preferably, the plurality of gas outlet pipes are uniformly installed between the flow guide pipe and the overflow weir, and the bottom end of the gas outlet pipe is penetratingly arranged with the tray, so that the gas phase and the liquid phase can be fully contacted.

[0010] Preferably, the driving shaft is arranged in the gas outlet pipe, and the driving shaft is rotatably connected to the inner wall of the gas outlet pipe through a bearing, so that the driving shaft can rotate in the gas outlet pipe.

[0011] Preferably, the connecting rod is in the shape of L, and the plurality of liquid passing holes are uniformly arranged on the flow guide plate, so that the flow guide plate can fully contact the liquid phase and the gas phase, and the resistance can be reduced.

[0012] Preferably, the adjustable mounting mechanism comprises a plurality of stands and a plurality of adjusting frames, the adjusting frames are fixedly installed on the tray, the stand is fixedly installed on the inner wall of the rectifying tower, the adjusting frame is sleeved on the stand, the adjusting frame and the stand are provided with adjusting holes, and the adjusting frame is provided with a fixing bolt.

[0013] Compared with the prior art, the rectifying device has the following beneficial effects:

[0014] 1. The rectification device for separating trichloroethylene and tetrachloroethylene, through the liquid phase being blocked by the overflow weir to stay on the tray, the gas phase enters into the gas outlet pipe from bottom to top and is discharged from the gas outlet hole to contact with the liquid phase, and in the process, the flowing gas phase pressure drives the driving blades to rotate, the driving blades drive the guide plates to rotate, the liquid phase is stirred and guided, the gas phase and the liquid phase are fully mixed and contacted, so that the rectification effect of trichloroethylene and tetrachloroethylene can be improved.

[0015] 2. The rectification device for separating trichloroethylene and tetrachloroethylene, by moving the adjusting frame to the appropriate mounting position on the stand, then tightening the fixing bolt for fixing, the mounting spacing between the trays can be adjusted according to the actual production requirements, and the installation flexibility is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the utility model;

[0017] Figure 2 It is a contact mechanism structure schematic view of the utility model;

[0018] Figure 3 It is a connecting structure schematic view between the gas outlet pipe and the top cover of the utility model;

[0019] Figure 4 It is an adjustable mounting mechanism structure schematic view of the utility model.

[0020] In the drawing: 1, rectification tower; 2, contact mechanism; 201, tray; 202, guide pipe; 203, downcomer; 204, overflow weir; 205, gas outlet pipe; 206, gas outlet hole; 207, top cover; 208, connecting shaft; 209, bevel gear pair; 210, driving shaft; 211, driving blade; 212, connecting rod; 213, guide plate; 214, liquid passing hole; 3, inner cavity; 4, adjustable mounting mechanism; 401, adjusting frame; 402, stand; 403, adjusting hole; 404, fixing bolt. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Please refer to Figures 1-3The utility model provides a technical scheme: rectifying plant that separates trichloroethylene and tetrachloroethylene, including rectifying tower 1, rectifying tower 1 inside is equipped with inner chamber 3, inner chamber 3 inside is equipped with adjustable mounting mechanism 4, adjustable mounting mechanism 4 is installed with multiple contact mechanisms 2, can be mixed fully to gas phase and liquid phase through contact mechanism 2, makes both can contact fully, thereby can improve trichloroethylene and tetrachloroethylene rectification effect.

[0023] Contact mechanism 2 includes tray 201, the number of tray 201 is set to multiple, multiple trays 201 are evenly distributed in rectifying tower 1 inside, so that trichloroethylene and tetrachloroethylene can be separated conveniently, improve separation effect, the top of one side of tray 201 is equipped with draft tube 202, the top of the other side of tray 201 is fixedly connected with overflow weir 204, so that the liquid phase on tray 201 can keep a certain height, stay on tray 201 and contact with gas phase, overflow weir 204 one side is equipped with downcomer 203, the draft tube 202 on the adjacent two trays 201 and downcomer 203 one to one correspondence, and downcomer 203 is fixedly installed in the bottom one side of tray 201, so that the liquid that downcomer 203 flows down can flow to tray 201 by draft tube 202, the top surface of tray 201 is fixedly connected with multiple gas outlet pipes 205, multiple gas outlet pipes 205 are evenly installed between draft tube 202 and overflow weir 204, and the bottom end of gas outlet pipe 205 is provided with tray 201, so that gas phase and liquid phase can contact fully, the side surface of each gas outlet pipe 205 is provided with multiple gas outlets 206, the top end of gas outlet pipe 205 is fixedly connected with top cover 207, top cover 207 is rotatably connected with connecting shaft 208 in the inside, the bottom end of connecting shaft 208 is driven by bevel gear pair 209 and is connected with driving shaft 210, so that the rotation of driving shaft 210 can drive connecting shaft 208 to rotate, driving shaft 210 is arranged in the inside of gas outlet pipe 205, and driving shaft 210 is rotatably connected with the inner wall of gas outlet pipe 205 by bearing, so that driving shaft 210 can rotate in the inside of gas outlet pipe 205, driving blade 211 is fixedly connected on driving shaft 210, the bottom end of connecting shaft 208 is fixedly connected with multiple connecting rods 212, the bottom end of each connecting rod 212 is fixedly connected with guide plate 213, multiple liquid passing holes 214 are formed in guide plate 213, the shape of connecting rod 212 is set as L, multiple liquid passing holes 214 are evenly arranged on guide plate 213, so that guide plate 213 can contact fully with liquid phase and gas phase, and liquid phase can pass through liquid passing hole 214 to reduce the resistance of guide plate 213 movement.

[0024] Please refer to Figure 1 And Figure 4The adjustable mounting mechanism 4 comprises a plurality of stands 402 and a plurality of adjusting frames 401, the plurality of adjusting frames 401 are fixedly mounted on the tray plates 201, the stands 402 are fixedly mounted on the inner wall of the rectifying tower 1, the adjusting frames 401 are sleeved on the stands 402, adjusting holes 403 are formed in the adjusting frames 401 and the stands 402, the adjusting frames 401 are provided with fixing bolts 404, the adjusting frames 401 can be moved to appropriate mounting positions on the stands 402, and then the fixing bolts 404 are tightened to fix the adjusting frames 401, the mounting spacing between the tray plates 201 can be adjusted according to actual production requirements, and the flexibility of mounting is improved.

[0025] In work, the liquid phase is stopped on the tray plate 201 by the overflow weir 204, the gas phase enters into the gas outlet pipe 205 from bottom to top, and is discharged from the gas outlet hole 206 to contact with the liquid phase, and in the process, the flowing gas phase drives the driving blades 211 to rotate, the driving blades 211 drive the driving shaft 210 to rotate, the driving shaft 210 drives the connecting shaft 208 to rotate through the bevel gear pair 209, the connecting shaft 208 drives the connecting rod 212 to rotate, the connecting rod 212 drives the guide plate 213 to rotate, the liquid phase is stirred and guided, the gas phase and the liquid phase are fully mixed and contacted, and the rectification effect of the trichloroethylene and the tetrachloroethylene is improved.

[0026] Meanwhile, the contents not described in detail in the specification all belong to the prior art known by those skilled in the art.

Claims

1. Distillation apparatus for separating trichloroethylene and tetrachloroethylene, comprising a distillation column (1), characterised in that: The rectifying tower (1) is internally provided with a cavity (3), the cavity (3) is internally provided with an adjustable mounting mechanism (4), a plurality of contact mechanisms (2) are mounted on the adjustable mounting mechanism (4); The contact mechanism (2) comprises a tray (201), a flow guide pipe (202) is arranged at one side top of the tray (201), a weep pipe (203) is arranged on one side of an overflow weir (204) fixedly connected to the other side top of the tray (201), a plurality of gas outlet pipes (205) are fixedly connected to the top surface of the tray (201), a plurality of gas outlet holes (206) are formed in the side surface of each gas outlet pipe (205), a top cover (207) is fixedly connected to the top end of the gas outlet pipe (205), a connecting shaft (208) is rotatably connected to the inside of the top cover (207), a driving shaft (210) is drivingly connected to the bottom end of the connecting shaft (208) through a bevel gear pair (209), a driving blade (211) is fixedly connected to the driving shaft (210), a plurality of connecting rods (212) are fixedly connected to the bottom end of the connecting shaft (208), a guide plate (213) is fixedly connected to the bottom end of each connecting rod (212), and a plurality of liquid passing holes (214) are formed in the guide plate (213).

2. The rectification apparatus for separating trichloroethylene and tetrachloroethylene according to claim 1, characterized by: The number of the tray (201) is set to be multiple, and multiple tray (201) are evenly distributed inside the rectifying tower (1).

3. The rectification apparatus for separating trichloroethylene and tetrachloroethylene according to claim 1, characterized by: The flow guide pipe (202) and the weep pipe (203) on the adjacent two trays (201) correspond to each other, and the weep pipe (203) is fixedly installed on one side of the bottom of the tray (201).

4. The rectification apparatus for separating trichloroethylene and tetrachloroethylene according to claim 1, characterized by: Multiple gas outlet pipes (205) are evenly installed between the flow guide pipe (202) and the overflow weir (204), and the bottom end of the gas outlet pipe (205) is penetratingly arranged with the tray (201).

5. The rectification apparatus for separating trichloroethylene and tetrachloroethylene according to claim 1, characterized by: The driving shaft (210) is arranged inside the gas outlet pipe (205), and the driving shaft (210) is rotatably connected with the inner wall of the gas outlet pipe (205) through a bearing.

6. The rectification apparatus for separating trichloroethylene and tetrachloroethylene according to claim 1, characterized by: The connecting rod (212) is arranged in an L shape, and multiple liquid passing holes (214) are evenly arranged on the guide plate (213).

7. The rectification apparatus for separating trichloroethylene and tetrachloroethylene according to claim 1, characterized by: The adjustable mounting mechanism (4) comprises a plurality of stands (402) and a plurality of adjusting frames (401), multiple adjusting frames (401) are fixedly installed on the tray (201), and the stand (402) is fixedly installed on the inner wall of the rectifying tower (1).

8. The rectification apparatus for separating trichloroethylene and tetrachloroethylene according to claim 7, characterized by: The adjusting frame (401) is sleeved on the stand (402), adjusting holes (403) are formed in the adjusting frame (401) and the stand (402), and a fixing bolt (404) is arranged on the adjusting frame (401).

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