Chemical rectifying tower

Abstract

The utility model belongs to the technical field of separating devices, and particularly relates to a chemical rectifying tower which comprises a tower body, a gas outlet pipe arranged at the top end of the tower body, a liquid outlet pipe arranged at the bottom end of the tower body, a gas inlet pipe and a liquid inlet pipe arranged on two sides of the tower body respectively, a plurality of groups of tower trays arranged inside the tower body, and a group of connecting plates arranged below each group of tower trays in a matching manner, the diameter of the tower tray and the diameter of the connecting plate are matched with the inner diameter of the tower body, a plurality of groups of through holes are formed in the tower tray in a penetrating manner, a plurality of groups of connecting rods matched with the through holes are arranged on the top surface of the connecting plate, stop blocks are arranged at the top ends of the connecting rods, and a screw rod is rotationally arranged in the tower body and is in threaded connection with the connecting plate; a guide rod is fixedly arranged in the tower body, the tower tray is fixedly arranged on the guide rod through a bolt, and the bottom end of the screw rod and the bottom end of the guide rod are positioned below the connecting plate at the bottommost layer. According to the utility model, enough contact time of gas and liquid in the rectifying tower can be ensured, and the separation and purification effects of target substances are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of separation devices, and in particular relates to a chemical distillation tower. Background Art

[0002] A distillation tower is a tower-type gas-liquid contact device used for distillation operations. Its working principle is to use the characteristics of different volatilities of each component in the mixture, that is, the vapor pressure of each component is different at the same temperature, so that the light components in the liquid phase are transferred to the gas phase, and the heavy components in the gas phase are transferred to the liquid phase, thereby achieving the purpose of separation.

[0003] In a chemical distillation tower, the temperature of the mixture rises after being heated, and the volatile components in the liquid phase begin to vaporize to form a gas phase. During the rising process of the gas phase, the target components in it are continuously enriched. In this process, by regulating the operating parameters such as temperature, pressure, and reflux ratio, the target substance can be separated from the mixture. During the operation of the distillation tower, the liquid flows downward along the through holes on the tower plate, and the gas climbs upward from the bottom of the tower plate. The gas and liquid contact each other on the tower plate, and then the liquid is distilled. However, the inner diameter of the through holes on the tower plate is currently fixed, resulting in a short contact time between the gas and the liquid, and insufficient mixing between the gas and the liquid, which ultimately affects the separation and purification effect of the target substance and reduces the working efficiency of the distillation tower. Utility Model Content

[0004] The utility model aims to provide a chemical distillation tower, which can ensure that the gas and the liquid have sufficient contact time in the distillation tower, promote the full mixing between the gas and the liquid, enhance the separation and purification effect of the target substance, and improve the working efficiency of the distillation tower.

[0005] To achieve the above purpose, the technical solution of the utility model is:

[0006] The chemical distillation tower described in the utility model comprises a tower body, an air outlet pipe is arranged at the top of the tower body, a liquid outlet pipe is arranged at the bottom of the tower body, an air inlet pipe and a liquid inlet pipe are respectively arranged on both sides of the tower body, a plurality of groups of tower plates are arranged inside the tower body, a group of connecting plates are arranged under each group of tower plates, the diameter of the tower plates and the diameter of the connecting plates are both arranged in accordance with the inner diameter of the tower body, a plurality of groups of through holes are penetrated through the tower plates, a plurality of groups of connecting rods are arranged on the top surface of the connecting plates in accordance with the through holes, a stopper is arranged on the top of the connecting rod, a screw rod is rotatably arranged inside the tower body, the screw rod and the connecting plate are connected by threads, a guide rod is fixedly arranged inside the tower body, the tower plates are fixed on the guide rod by bolts, and the bottom ends of the screw rod and the guide rod are both located below the bottommost connecting plate.

[0007] in:

[0008] The tower plate is rotatably connected to the screw rod, and the connecting plate is slidably connected to the guide rod.

[0009] The connecting plate is provided with a plurality of groups of arc grooves.

[0010] The stopper is arranged in a cone shape as a whole.

[0011] The outer surface of the screw rod and the outer surface of the guide rod are both provided with corrosion-resistant coatings.

[0012] The screw rod is arranged through the top of the tower body.

[0013] A rotating tube is arranged on the top of the tower body to rotate in coordination with the screw rod, and a marking strip is wound around the outer surface of the rotating tube.

[0014] A fixing rod is arranged inside the rotating tube, and the fixing rod is rotatably connected to the rotating tube.

[0015] A spring is arranged between the rotating tube and the fixed rod. The spring is fixedly connected to the rotating tube, and the spring is rotatably connected to the outer surface of the fixed rod.

[0016] One end of the marking strip is wound and fixed on the rotating tube, and the other end of the marking strip is fixed on the screw rod.

[0017] The beneficial effects of the utility model are as follows: the connection plate, the connection rod and the block are driven to move up and down in the tower body by the rotation of the screw, so that the block can move to the inside of the through hole on the tower plate, thereby changing the flow rate of the material through the through hole, increasing the contact time of the gas and the liquid in the tower body, promoting a more complete mixing of the gas and the liquid in the tower body, improving the separation and purification effect of the target substance, and improving the working efficiency of the distillation tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a partial structural cross-sectional view of the interior of the tower body in the utility model;

[0020] Figure 3 It is a structural schematic diagram of the connecting plate, connecting rod, stopper and arc groove in the utility model;

[0021] Figure 4 It is a partial structural cross-sectional view of the rotating tube, spring and fixed rod in the utility model;

[0022] In the figure:

[0023] 1. Tower body; 2. Air outlet pipe; 3. Liquid outlet pipe; 4. Air inlet pipe; 5. Liquid inlet pipe; 6. Tower plate; 7. Screw; 8. Connecting plate; 9. Connecting rod; 10. Block; 11. Arc groove; 12. Guide rod; 13. Rotating tube; 14. Marking strip; 15. Spring; 16. Fixing rod. DETAILED DESCRIPTION

[0024] The present invention will be specifically described and illustrated below in conjunction with the embodiments.

[0025] Example 1

[0026] like Figure 1-4 As shown, the chemical distillation tower described in the utility model includes a tower body 1, an air outlet pipe 2 is arranged at the top of the tower body 1, a liquid outlet pipe 3 is arranged at the bottom of the tower body 1, an air inlet pipe 4 and a liquid inlet pipe 5 are respectively arranged on both sides of the tower body 1, a plurality of groups of tower plates 6 are arranged inside the tower body 1, a group of connecting plates 8 are arranged under each group of tower plates 6, the diameter of the tower plates 6 and the diameter of the connecting plates 8 are both arranged to match the inner diameter of the tower body 1, a plurality of groups of through holes are penetrated through the tower plates 6, a plurality of groups of connecting rods 9 are arranged on the top surface of the connecting plates 8 to match the through holes, a stopper 10 is arranged on the top of the connecting rods 9, a screw rod 7 is rotatably arranged inside the tower body 1, the screw 7 and the connecting plate 8 are connected by threads, a guide rod 12 is fixedly arranged inside the tower body 1, the tower plates 6 are fixedly arranged on the guide rod 12 by bolts, and the bottom ends of the screw rod 7 and the guide rod 12 are both located below the bottommost connecting plate 8.

[0027] The screw 7 rotates to drive the connecting plate 8, the connecting rod 9 and the stopper 10 to move up and down in the tower body 1, so that the stopper 10 can move to the inside of the through hole on the tower plate 6, thereby changing the flow rate of the material through the through hole, increasing the contact time of the gas and the liquid in the tower body 1, promoting a more complete mixing of the gas and the liquid in the tower body 1, improving the separation and purification effect of the target substance, and improving the working efficiency of the distillation tower. The tower plate 6 and the guide rod 12 are connected by bolts for easy disassembly.

[0028] The tower plate 6 is rotatably connected to the screw rod 7, and the connecting plate 8 is slidably connected to the guide rod 12.

[0029] The connecting plate 8 is provided with a plurality of groups of arc grooves 11. The arc grooves 11 allow the material to be transferred between the connecting plate 8 and the lower tray 6, thereby ensuring the orderly conduct of the distillation process.

[0030] The block 10 is arranged in a cone shape as a whole, so that the block 10 can be easily moved into the through hole on the tray 6. When the block 10 enters the through hole, the material flow through the through hole can be controlled, the contact effect between the gas and the liquid in the tower body 1 can be optimized, and the working efficiency of the distillation tower can be improved.

[0031] The outer surface of the screw rod 7 and the outer surface of the guide rod 12 are both provided with a corrosion-resistant coating. The material of the corrosion-resistant coating is tungsten nitride, titanium nitride or tungsten carbide. The corrosion-resistant coating can improve the wear resistance, corrosion resistance and protective performance of the screw rod 7 and the guide rod 12, and prevent the screw rod 7 and the guide rod 12 from being worn or corroded.

[0032] The screw rod 7 is arranged through the top of the tower body 1 .

[0033] A rotating tube 13 is provided at the top of the tower body 1 to rotate in cooperation with the screw rod 7 , and a marking strip 14 is wound around the outer surface of the rotating tube 13 .

[0034] A fixing rod 16 is disposed inside the rotating tube 13 , and the fixing rod 16 is rotatably connected to the rotating tube 13 .

[0035] A spring 15 is provided between the rotating tube 13 and the fixed rod 16 . The spring 15 is fixedly connected to the rotating tube 13 , and the spring 15 is rotatably connected to the outer surface of the fixed rod 16 .

[0036] One end of the marking strip 14 is wound and fixed on the rotating tube 13 , and the other end of the marking strip 14 is fixed on the screw rod 7 .

[0037] When the screw 7 rotates, it can drive the marking strip 14 to be retracted and extended, so that the marking strip 14 can be rolled up to the surface of the screw 7. By observing the marking strip 14, the position of the connecting plate 8 and the stopper 10 inside the tower body 1 can be known. The surface of the marking strip 14 is provided with a mark, and the operator can rotate the screw 7 by observing the mark on the marking strip 14.

[0038] The spring 15 can realize the automatic reset of the rotating tube 13. After the screw 7 rotates, the rotating tube 13 can perform a reset operation with the help of the elastic restoring force of the spring 15, thereby ensuring that the rotating tube 13 automatically retracts and releases the marking strip 14 according to different rotation directions of the screw 7.

[0039] Working principle and process:

[0040] When using the device, first rotate the screw 7 upwards. At this time, the connecting plate 8 threadedly connected to the surface of the screw 7 will move upwards along the guide rod 12, thereby driving the connecting rod 9 and the stopper 10 at the top of the connecting plate 8 to move together. The stopper 10 can move to the inside of the through hole on the tower plate 6, thereby adjusting the material flow through the through hole. When the screw 7 rotates, it will also drive the marking strip 14 to be retracted and released on the surface of the rotating tube 13, so that the marking strip 14 can be wound around the surface of the screw 7. By observing the marking strip 14, the position of the connecting plate 8 and the stopper 10 inside the tower body 1 can be clearly known, and the material flow through the through hole can be adjusted according to different material characteristics. The rotating tube 13 can achieve a reset function with the help of the spring 15, and then the marking strip 14 on the surface of the rotating tube 13 can be automatically retracted and released.

Claims

1. A chemical distillation tower, comprising a tower body (1), characterized in that: The top of the tower body (1) is provided with an air outlet pipe (2), the bottom of the tower body (1) is provided with a liquid outlet pipe (3), both sides of the tower body (1) are provided with an air inlet pipe (4) and a liquid inlet pipe (5), a plurality of groups of tower plates (6) are provided inside the tower body (1), a group of connecting plates (8) are provided under each group of tower plates (6), the diameters of the tower plates (6) and the connecting plates (8) are both provided in accordance with the inner diameter of the tower body (1), a plurality of groups of through holes are provided through the tower plates (6), and the connecting plates (8) are provided with a plurality of through holes. (8) A plurality of groups of connecting rods (9) are arranged in cooperation with the through holes on the top surface, and a stopper (10) is arranged at the top of the connecting rod (9). A screw rod (7) is rotatably arranged inside the tower body (1), and the screw rod (7) is connected to the connecting plate (8) by a threaded connection. A guide rod (12) is fixedly arranged inside the tower body (1), and the tower plate (6) is fixedly arranged on the guide rod (12) by bolts, and the bottom ends of the screw rod (7) and the guide rod (12) are both located below the bottommost connecting plate (8).

2. The chemical distillation tower according to claim 1, characterized in that: The tower plate (6) is rotatably connected to the screw rod (7), and the connecting plate (8) is slidably connected to the guide rod (12).

3. The chemical distillation tower according to claim 1, characterized in that: A plurality of groups of arc-shaped grooves (11) are provided through the connecting plate (8).

4. The chemical distillation tower according to claim 1, characterized in that: The stopper (10) is arranged in a cone shape as a whole.

5. The chemical distillation tower according to claim 1, characterized in that: The outer surface of the screw rod (7) and the outer surface of the guide rod (12) are both provided with a corrosion-resistant coating.

6. The chemical distillation tower according to claim 1, characterized in that: The screw rod (7) is arranged through the top of the tower body (1).

7. The chemical distillation tower according to claim 6, characterized in that: A rotating tube (13) is provided at the top end of the tower body (1) to rotate in cooperation with the screw rod (7), and a marking strip (14) is wound around the outer surface of the rotating tube (13).

8. The chemical distillation tower according to claim 7, characterized in that: A fixing rod (16) is arranged inside the rotating tube (13), and the fixing rod (16) is rotatably connected to the rotating tube (13).

9. The chemical distillation tower according to claim 8, characterized in that: A spring (15) is provided between the rotating tube (13) and the fixed rod (16); the spring (15) is fixedly connected to the rotating tube (13); and the spring (15) is rotatably connected to the outer surface of the fixed rod (16).

10. The chemical distillation tower according to claim 9, characterized in that: One end of the marking strip (14) is wound and fixed on the rotating tube (13), and the other end of the marking strip (14) is fixed on the screw rod (7).

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