Rectifying tower for chemical production

Abstract

The utility model relates to the technical field of rectifying towers, and discloses a rectifying tower for chemical production, which comprises a chemical rectifying tower, a tower inner wall is arranged in the chemical rectifying tower, a spiral plate is mounted in the tower inner wall through a cleaning driving mechanism, a brush is arranged on the side wall, close to the tower inner wall, of the spiral plate, and the brush is attached to the tower inner wall. The top of the chemical rectifying tower is provided with a top chamber and an annular groove respectively, and a plurality of flow dividing channels are arranged between the top chamber and the annular groove in a communicated mode. Water or chemical liquid is pumped to the tower inner wall of the chemical rectifying tower through cooperation with the water supply mechanism and slides downwards, the spiral plate is driven to rotate through the cleaning driving mechanism, scale on the inner wall of the chemical rectifying tower is thoroughly cleaned through circumferential rotation of the brushes on the outer side wall of the spiral plate, and the problem that dead corners cannot be cleaned is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of distillation columns, in particular to a distillation column for chemical production. Background Art

[0002] In existing chemical production, as a chemical equipment, the distillation column plays a great role in the purification of chemical products. Rectification refers to using the different volatilities between components of a liquid mixture, and through the mass and heat transfer across the interface during the step-by-step flow and contact of the gas-liquid two-phase, so as to complete the separation and purification of the mixture. After long-term use of the distillation column, the inner wall of the distillation column is prone to fouling.

[0003] There is a distillation column for chemical production (its authorization announcement number is: CN214209466U), which is equipped with a water tank, a water pump, a motor, a vertical pipe and a brush in cooperation. The water pump can pump the water in the water tank and transport it into the L-shaped pipe. The water can flow along the L-shaped pipe into the interior of the vertical pipe. A horizontal pipe is communicated with the side wall of the vertical pipe. The water can flow to the end of the horizontal pipe and supply water to the nozzle. Under the action of the bearing, the motor can drive the vertical pipe to rotate. When the vertical pipe rotates, it can drive the brush to rotate. The brushes are distributed between the nozzles and can clean the inner wall of the tower during rotation, thus facilitating the cleaning of the inner wall of the distillation column.

[0004] However, there are some deficiencies in its use process: since multiple groups of brushes on one side of the L-shaped pipe are arranged at equal intervals, and the nozzles are located between adjacent two groups of brushes. When driving the brushes to rotate to clean the inner wall of the distillation column, there is a situation where the part between adjacent two groups of brushes on the inner wall of the distillation column cannot be brushed, resulting in dead corners that cannot be cleaned, and it is not convenient to thoroughly clean the inner wall of the distillation column. Summary of the Utility Model

[0005] In view of the deficiencies of the prior art, the utility model provides a distillation column for chemical production to solve the above problems.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A distillation column for chemical production includes a chemical distillation column. A tower inner wall is provided inside the chemical distillation column. A spiral plate is installed in the tower inner wall through a cleaning driving mechanism. A brush is arranged on the side wall of the spiral plate close to the tower inner wall, and the brush fits on the tower inner wall. The top of the chemical distillation column is respectively provided with a top chamber and an annular groove. A plurality of shunt channels are communicated between the top chamber and the annular groove. A plurality of top holes are respectively provided on the bottom inner walls of the shunt channels. A water supply mechanism for the top chamber is arranged on one side of the chemical distillation column, and a sewage collection mechanism is arranged on the other side of the chemical distillation column.

[0008] Preferably, the cleaning drive mechanism includes a motor, a drive rod, and a connecting rod. The motor is fixedly installed at the bottom of the chemical distillation column. One end of the drive rod is fixedly installed on the output shaft of the motor. The other end of the drive rod rotatably extends into the inner wall of the column and is fixedly installed with a plurality of connecting rods respectively. The plurality of connecting rods are fixedly connected to the spiral plate. The spiral plate can be driven to rotate by the cleaning drive mechanism, and the fouling on the inner wall of the chemical distillation column can be thoroughly cleaned by the circumferential rotation of the brush on the outer side wall of the spiral plate.

[0009] Preferably, the annular groove is located below the top chamber and is connected to the inner wall of the column, facilitating the water or chemical liquid in the annular groove to flow to the inner wall of the column and slide downwards.

[0010] Preferably, the plurality of diversion channels between the top chamber and the annular groove are arranged in a circumferential array, and the plurality of top holes on the diversion channels are arranged at equal intervals. The water or chemical liquid drawn in can be diverted through the plurality of diversion channels. Part of the water or chemical liquid flows into the annular groove, and the other part of the water or chemical liquid directly flows into the inner wall of the column through the plurality of top holes in the diversion channels.

[0011] Preferably, the water supply mechanism includes a water tank, a water pump, and a water suction pipe. The water tank is located on one side of the chemical distillation column. A water pump is arranged at the top of the chemical distillation column. One end of the water suction pipe is arranged at the water suction end of the water pump, and the other end of the water suction pipe extends into the water tank. The drainage end of the water pump is connected to the top chamber. By turning on the water pump, the water or chemical liquid in the water tank is pumped into the top chamber through the water suction pipe.

[0012] Preferably, the sewage collection mechanism includes a collection tank, a drainage pipe, and an electric valve. The collection tank is located on one side of the chemical distillation column. One end of the drainage pipe is connected to the drainage end of the chemical distillation column, and the other end of the drainage pipe extends into the collection tank. An electric valve is arranged on the drainage pipe. By opening the electric valve, the cleaned sewage flows into the collection tank through the drainage pipe, and the cleaned sewage is collected by the collection tank for subsequent unified treatment.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] For the distillation column used in chemical production, by providing a top chamber, a plurality of diversion channels, and an annular groove on the inner wall of the chemical distillation column, in cooperation with the water supply mechanism to pump water or chemical liquid to the inner wall of the chemical distillation column and let it slide downwards, and through the cleaning drive mechanism to drive the spiral plate to rotate, the fouling on the inner wall of the chemical distillation column can be thoroughly cleaned by the circumferential rotation of the brush on the outer side wall of the spiral plate, avoiding the problem of dead corners that cannot be cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a schematic structural view of a three-dimensional partial section of the utility model;

[0016] Figure 2 This is the utility model Figure 1 A schematic structural view of part A in it;

[0017] Figure 3 This is a schematic structural view of a plane partial part of the utility model;

[0018] Figure 4 This is a schematic structural view of the cleaning drive mechanism perspective of the utility model.

[0019] In the figure: 1. Chemical distillation column; 2. Inner wall of the column; 3. Motor; 4. Driving rod; 5. Connecting rod; 6. Spiral plate; 7. Brush; 8. Top chamber; 9. Annular groove; 10. Shunt channel; 11. Top hole; 12. Water tank; 13. Pump; 14. Water suction pipe; 15. Collection box; 16. Drain pipe; 17. Electric valve. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0021] Refer to Figures 1-4 , A distillation column for chemical production, including a chemical distillation column 1, an inner wall 2 of the chemical distillation column 1 is provided with a spiral plate 6 installed through a cleaning drive mechanism, a brush 7 is arranged on the side wall of the spiral plate 6 close to the inner wall 2 of the column, the brush 7 is attached to the inner wall 2 of the column, a top chamber 8 and an annular groove 9 are respectively opened at the top of the chemical distillation column 1, a plurality of shunt channels 10 are communicated between the top chamber 8 and the annular groove 9, a plurality of top holes 11 are respectively opened on the bottom side inner walls of the shunt channels 10, a water supply mechanism for the top chamber 8 is arranged on one side of the chemical distillation column 1, and a sewage collection mechanism is arranged on the other side of the chemical distillation column 1.

[0022] Furthermore, the cleaning drive mechanism includes a motor 3, a driving rod 4 and a connecting rod 5. The motor 3 is fixedly installed at the bottom of the chemical distillation column 1. One end of a driving rod 4 is fixedly installed on the output shaft of the motor 3. The other end of the driving rod 4 rotates and extends into the inner wall 2 of the column and is respectively fixedly installed with a plurality of connecting rods 5. The plurality of connecting rods 5 are fixedly connected to the spiral plate 6. The spiral plate 6 can be driven to rotate through the cleaning drive mechanism, and the fouling on the inner wall of the chemical distillation column 1 can be thoroughly cleaned through the circumferential rotation of the brush 7 on the outer side wall of the spiral plate 6.

[0023] Further, the annular groove 9 is located below the top chamber 8 and is connected to the inner wall 2 of the tower, facilitating the water or chemical liquid in the annular groove 9 to flow to the inner wall of the inner wall 2 of the tower and slide downwards.

[0024] Specifically, a plurality of diversion channels 10 between the top chamber 8 and the annular groove 9 are arranged in a circumferential array, and a plurality of top holes 11 on the diversion channels 10 are arranged at equal intervals. The diversion of the pumped water or chemical liquid is facilitated through the plurality of diversion channels 10. Part of the water or chemical liquid flows into the annular groove 9, and the other part of the water or chemical liquid directly flows into the inner wall 2 of the tower through the plurality of top holes 11 in the diversion channels 10.

[0025] Further, the water supply mechanism includes a water tank 12, a water pump 13, and a water suction pipe 14. The water tank 12 is located on one side of the chemical distillation tower 1. A water pump 13 is provided at the top of the chemical distillation tower 1. One end of a water suction pipe 14 is provided at the water suction end of the water pump 13, and the other end of the water suction pipe 14 extends into the water tank 12. The drainage end of the water pump 13 is connected to the top chamber 8. By turning on the water pump 13, the water or chemical liquid in the water tank 12 is pumped into the top chamber 8 through the water suction pipe 14.

[0026] Further, the sewage collection mechanism includes a collection tank 15, a drainage pipe 16, and an electric valve 17. The collection tank 15 is located on one side of the chemical distillation tower 1. One end of a drainage pipe 16 is connected to the drainage end of the chemical distillation tower 1, and the other end of the drainage pipe 16 extends into the collection tank 15. An electric valve 17 is provided on the drainage pipe 16. By opening the electric valve 17, the cleaned sewage flows into the collection tank 15 through the drainage pipe 16. The collection tank 15 collects the cleaned sewage for subsequent unified treatment.

[0027] During use: After the chemical distillation column 1 has been used for a period of time, scale will form on the inner wall of the chemical distillation column 1. When it is necessary to clean the scale on the inner wall of the chemical distillation column 1, by turning on the suction pump 13, the water or chemical liquid in the water tank 12 is pumped through the suction pipe 14 into the top chamber 8, and then is divided into the annular groove 9 through multiple diversion channels 10. After that, the water or chemical liquid in the annular groove 9 flows to the inner wall of the tower inner wall 2 and slides downwards. Part of the water or chemical liquid directly flows into the tower inner wall 2 through multiple top holes 11 in the diversion channel 10. At the same time, by turning on the motor 3, the driving rod 4 drives multiple connecting rods 5 and the spiral plate 6 to rotate, and the circumferential rotation of the brush 7 on the outer side wall of the spiral plate 6 is used to thoroughly clean the scale on the inner wall of the chemical distillation column 1, avoiding the problem of dead corners that cannot be cleaned. Part of the water or chemical liquid discharged through the multiple top holes 11 falls on the rotating multiple connecting rods 5 and the spiral plate 6, realizing the flushing of the scale impurities brushed on the multiple connecting rods 5 and the spiral plate 6. After that, by turning on the electric valve 17, the cleaned sewage flows through the drain pipe 16 into the collection tank 15, and the collection tank 15 collects the cleaned sewage for subsequent unified treatment.

[0028] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chemical production distillation tower, comprising a chemical distillation tower (1), characterized in that: The chemical distillation tower (1) is provided with an inner wall (2), a spiral plate (6) is installed in the inner wall (2) through a cleaning drive mechanism, a brush (7) is provided on the side wall of the spiral plate (6) close to the inner wall (2), and the brush (7) is attached to the inner wall (2). A top chamber (8) and an annular groove (9) are provided at the top of the chemical distillation tower (1), a plurality of diversion channels (10) are provided in communication between the top chamber (8) and the annular groove (9), and a plurality of top holes (11) are provided on the inner wall of the bottom side of the diversion channel (10), a water supply mechanism for the top chamber (8) is provided on one side of the chemical distillation tower (1), and a sewage collection mechanism is provided on the other side of the chemical distillation tower (1).

2. A distillation tower for chemical production according to claim 1, characterized in that: The cleaning drive mechanism comprises a motor (3), a driving rod (4) and a connecting rod (5); the motor (3) is fixedly mounted at the bottom of a chemical distillation tower (1); one end of the driving rod (4) is fixedly mounted on the output shaft of the motor (3); the other end of the driving rod (4) is rotatably extended into the tower inner wall (2) and is respectively fixedly mounted with a plurality of connecting rods (5); the plurality of connecting rods (5) are fixedly connected to a spiral plate (6).

3. A distillation tower for chemical production according to claim 1, characterized in that: The annular groove (9) is located below the top chamber (8), and the annular groove (9) is connected to the tower inner wall (2).

4. A distillation tower for chemical production according to claim 3, characterized in that: The plurality of flow diversion channels (10) between the top chamber (8) and the annular groove (9) are distributed in a circumferential array, and the plurality of top holes (11) on the flow diversion channels (10) are arranged at equal distances.

5. A distillation tower for chemical production according to claim 1, characterized in that: The water supply mechanism comprises a water tank (12), a pump (13) and a water pumping pipe (14); the water tank (12) is located on one side of the chemical distillation tower (1); the top of the chemical distillation tower (1) is provided with a pump (13); the water pumping end of the pump (13) is provided with one end of the water pumping pipe (14); the other end of the water pumping pipe (14) extends into the water tank (12); the water discharge end of the pump (13) is connected to the top chamber (8).

6. A distillation tower for chemical production according to claim 1, characterized in that: The sewage collection mechanism comprises a collection box (15), a drainage pipe (16) and an electric valve (17); the collection box (15) is located on one side of the chemical distillation tower (1); the drainage end of the chemical distillation tower (1) is connected to one end of the drainage pipe (16); the other end of the drainage pipe (16) extends into the collection box (15); and the drainage pipe (16) is provided with an electric valve (17).

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