Separation rectifying tower for preparing MTBE (methyl tert-butyl ether) from liquefied gas

Abstract

The separation rectifying tower comprises a tower body, a reflux pump, a reflux pipe, a connecting pipe, a supporting cylinder, a toothed plate, a supporting ring and an elastic cylinder, the bottom end of the supporting cylinder is fixedly connected with a plurality of supporting columns, the reflux pump is located on one side of the tower body, the reflux pipe is communicated with the top end of the tower body, the connecting pipe is communicated with the bottom end of the tower body, and the supporting columns are fixedly connected with the toothed plate. And telescopic pipes are communicated between the reflux pipe and the reflux pump and between the connecting pipe and the reflux pump. According to the separation rectifying tower for preparing MTBE from liquefied gas, MTBE can be conveniently prepared and separated through cooperation of the tower body, the reflux pump, the reflux pipe and the connecting pipe, and meanwhile, substances such as formaldehyde and isobutene in the reflux pipe and the connecting pipe can be conveniently subjected to vibration cleaning through cooperation of a supporting cylinder, a driving assembly, a toothed plate, a supporting ring, an elastic cylinder and an elastic seat; therefore, the influence of substances such as formaldehyde and isobutene on the reflux efficiency of the reflux pipe and the connecting pipe is reduced, and the influence of the reflux efficiency on the MTBE preparation and separation effect is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of distillation towers, in particular to a separation distillation tower for preparing MTBE from liquefied gas. Background Art

[0002] The process of preparing MTBE from liquefied gas is that liquefied gas (C4) is separated and distilled to obtain butene, butene is converted into isobutylene under the action of catalyst, and isobutylene and methanol are converted into MTBE under the action of catalyst. In the process of preparing MTBE from liquefied gas, separation work needs to be carried out through a distillation tower;

[0003] For example, the utility model with patent publication number CN205287681U discloses an energy-saving and consumption-reducing MTBE azeotropic distillation tower device, wherein the mixed raw material is fed into a filter, and the filtered mixed material is fed into an azeotropic distillation tower, an acidic ion exchange resin catalyst is added into the azeotropic distillation tower, and the temperature of the first layer of the azeotropic distillation tower kettle is controlled between 60°C and 65°C, and the temperature of the second layer of the sensitive point ranges between 65°C and 75°C. A reflux pump refluxes formaldehyde, isobutylene and other substances in the mixture discharged from the top of the tower into the azeotropic distillation tower. The isobutylene and methanol in the mixed C4 undergo etherification reaction under the action of an acidic ion exchange resin catalyst to generate MTBE, and the purity of the generated MTBE can be detected by a purity detector. Although it is convenient for preparing MTBE, when substances such as formaldehyde and isobutylene flow back into the distillation tower through a reflux pump, substances such as formaldehyde and isobutylene are easy to adhere to the inner wall of the pipeline. After long-term reflux, more and more substances such as formaldehyde and isobutylene adhere to the pipeline, thereby reducing the reflux efficiency, and then easily affecting the separation effect of the distillation tower. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a separation distillation tower for preparing MTBE from liquefied gas, so as to solve the problem in the background art that low reflux efficiency easily affects the separation effect of the distillation tower.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: A separation and distillation tower for preparing MTBE from liquefied gas, comprising a tower body, a reflux pump, a reflux pipe, a connecting pipe, a support cylinder, a tooth plate, a support ring and an elastic cylinder;

[0008] The reflux pump is located on one side of the tower body;

[0009] The reflux pipe is connected to the top of the tower body;

[0010] The connecting pipe is connected to the bottom end of the tower body, and a telescopic pipe is connected between the reflux pipe and the connecting pipe and the reflux pump;

[0011] The support cylinder is located on one side of the tower body;

[0012] The tooth plates are provided in two pieces, and the two tooth plates are both penetrated and slidably provided on the support tube through the driving assembly;

[0013] The support ring is provided in two pieces, and the two support rings are respectively fixedly connected between the two tooth plates and the return pipe and the connecting pipe;

[0014] The elastic tubes are provided in two numbers, the two elastic tubes are respectively sleeved on the return pipe and the connecting pipe, and an elastic seat is installed in the elastic tube.

[0015] Preferably, the driving assembly comprises:

[0016] A motor, wherein the motor is installed in the support tube;

[0017] A rotating rod, the rotating rod is fixedly connected to the output end of the motor, and the rotating rod is rotatably connected to the inner side wall of the supporting tube;

[0018] A rotating bar, the rotating bar is rotatably mounted on the inner top wall of the supporting tube, and the rotating rod and the rotating bar are respectively provided with a main gear and a driven wheel, the main gear meshes with the driven wheel;

[0019] The rotating gear is provided with two rotating gears, the two rotating gears are respectively fixedly connected with the rotating rod and the rotating bar, and the tooth plate is provided with tooth grooves matching with the rotating gears.

[0020] Furthermore, the elastic seat comprises:

[0021] A compression spring, wherein the compression spring is provided in plurality and the plurality of compression springs are all fixedly connected to the inner side wall of the elastic tube;

[0022] The elastic plate is provided in two pieces, and the two elastic plates are respectively fixedly connected between the plurality of compression springs.

[0023] As a further solution of the present application, two through openings are provided on the support tube, and the two tooth plates are respectively slidably installed in the through openings.

[0024] Based on the above solution, a support frame is fixedly connected between the two elastic tubes and the support tube.

[0025] It should also be noted that a plurality of support columns are fixedly connected to the bottom end of the support tube.

[0026] (III) Beneficial effects

[0027] Compared with the prior art, the utility model provides a separation and distillation tower for preparing MTBE from liquefied gas, which has the following beneficial effects:

[0028] 1. In the utility model, the tower body facilitates the preparation and separation of MTBE, and the tower body, the reflux pump, the reflux pipe and the connecting pipe cooperate to reflux and circulate MTBE for separation;

[0029] 2. In the utility model, the two tooth plates are slid by the cooperation of the support tube and the driving assembly, so that the two tooth plates drive the return pipe and the connecting pipe to move through the two support rings, so as to shake off the formaldehyde, isobutylene and other substances in the return pipe and the connecting pipe, thereby reducing the residue and blockage of the formaldehyde, isobutylene and other substances in the return pipe and the connecting pipe;

[0030] 3. In the utility model, through the cooperation of two elastic tubes and two elastic seats, it is convenient to elastically impact the return pipe and the connecting pipe again while supporting them, so as to shake off and clean the formaldehyde, isobutylene and other substances in the return pipe and the connecting pipe while ensuring the connection stability of the return pipe and the connecting pipe;

[0031] 4. Therefore, compared with the problem of low reflux efficiency that is easily affected by the separation effect of the distillation tower proposed in the prior art, the separation distillation tower for preparing MTBE from liquefied gas is convenient for preparing and separating MTBE through the cooperation of the tower body, reflux pump, reflux pipe and connecting pipe. At the same time, it is convenient to vibrate and clean the substances such as formaldehyde and isobutylene in the reflux pipe and the connecting pipe through the cooperation of the support cylinder, drive assembly, tooth plate, support ring, elastic cylinder and elastic seat, so as to reduce the influence of substances such as formaldehyde and isobutylene on the reflux efficiency of the reflux pipe and the connecting pipe, thereby reducing the influence of the reflux efficiency on the preparation and separation effect of MTBE. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the overall three-dimensional structure of this application;

[0033] Figure 2 This is a schematic diagram of the three-dimensional structure of the supporting ring, elastic tube and supporting frame of the present application;

[0034] Figure 3 This is a schematic cross-sectional view of the supporting cylinder, tooth plate and rotating rod of the present application;

[0035] Figure 4 This is a schematic cross-sectional structure diagram of the elastic tube, compression spring and elastic plate of the present application.

[0036] In the figure: 1. tower body; 2. reflux pump; 3. reflux pipe; 4. connecting pipe; 5. telescopic pipe; 6. support tube; 7. tooth plate; 8. support ring; 9. elastic tube; 10. motor; 11. rotating rod; 12. rotating bar; 13. main gear; 14. driven wheel; 15. rotating gear; 16. compression spring; 17. elastic plate; 18. support frame; 19. support column. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] See also Figures 1 to 4 A separation and distillation tower for preparing MTBE from liquefied gas comprises a tower body 1, a reflux pump 2, a reflux pipe 3, a connecting pipe 4, a support cylinder 6, a tooth plate 7, a support ring 8 and an elastic cylinder 9. The bottom end of the support cylinder 6 is fixedly connected with a plurality of support columns 19 for stably supporting the support cylinder 6. The reflux pump 2 is located at one side of the tower body 1. The reflux pipe 3 is connected to the top of the tower body 1. The connecting pipe 4 is connected to the bottom of the tower body 1. The reflux pipe 3 and the connecting pipe 4 are both connected to the reflux pump 2 by a telescopic pipe 5. The telescopic pipe 5 will expand or contract with the movement of the reflux pipe 3 and the connecting pipe 4. The support cylinder 6 is located at one side of the tower body 1. The tooth plate 7 is set to two, and the two tooth plates 7 are slidably set on the support tube 6 through the driving component. The support tube 6 is provided with two through holes, and the two tooth plates 7 are slidably installed in the through holes respectively, and the sliding of the tooth plates 7 can be limited. The support ring 8 is set to two, and the two support rings 8 are respectively fixedly connected between the two tooth plates 7 and the return pipe 3 and the connecting pipe 4. The elastic tube 9 is set to two, and the two elastic tubes 9 are respectively mounted on the return pipe 3 and the connecting pipe 4, and an elastic seat is installed in the elastic tube 9. The two elastic tubes 9 are fixedly connected to the support tube 6 with a support frame 18, which is convenient for stably supporting the two elastic tubes 9.

[0039] See also Figures 1 to 4The driving assembly includes a motor 10, a rotating rod 11, a rotating bar 12 and a rotating gear 15. The motor 10 is installed in the support tube 6. The motor 10 is set to automatically perform forward and reverse movements. The forward and reverse angles can be set according to actual conditions. The rotating rod 11 is fixedly connected to the output end of the motor 10, and the rotating rod 11 is rotatably connected to the inner side wall of the support tube 6. The rotating bar 12 is rotatably installed on the inner top wall of the support tube 6, and the rotating rod 11 and the rotating bar 12 are respectively provided with a main gear 13 and a driven wheel 14, and the main gear 13 is meshed with the driven wheel 14. The rotating gear 15 is set to two, and the two rotating gears 15 are respectively fixedly connected to the rotating rod 11 and the rotating bar 12, and a tooth groove matching the rotating gear 15 is opened on the tooth plate 7;

[0040] By rotating the rotating rod 11 through the motor 10, the rotating rod 11 can rotate the rotating bar 12 through the cooperation of the main gear 13 and the driven wheel 14. Through the cooperation of the rotating gear, the rotating bar 12 and the two rotating gears 15, the two tooth plates 7 can be moved on the supporting tube 6, so that the return pipe 3 and the connecting pipe 4 can be slightly moved through the two supporting rings 8, so that the formaldehyde, isobutylene and other substances in the return pipe 3 and the connecting pipe 4 can be shaken, thereby facilitating and reducing the blockage of formaldehyde, isobutylene and other substances in the return pipe 3 and the connecting ring.

[0041] See also Figures 1 to 4 The elastic seat includes a compression spring 16 and an elastic plate 17. The compression spring 16 is provided in plurality, and the plurality of compression springs 16 are fixedly connected to the inner wall of the elastic tube 9. The elastic plate 17 is provided in two, and the two elastic plates 17 are respectively fixedly connected between the plurality of compression springs 16.

[0042] The two elastic plates 17 can be supported by the cooperation of multiple compression springs 16. When the return pipe 3 or the connecting pipe 4 slightly collides with the elastic plate 17, the elastic plate 17 will move through the compression spring 16 to facilitate a slight elastic impact on the return pipe 3 or the connecting ring, thereby shaking out and cleaning substances such as formaldehyde and isobutylene in the return pipe 3 and the connecting pipe 4.

[0043] In summary, the separation and distillation tower for preparing MTBE from liquefied gas is convenient for preparing and separating MTBE through the tower body 1. Through the cooperation of the tower body 1, the reflux pump 2, the reflux pipe 3 and the connecting pipe 4, MTBE can be refluxed and separated. When it is necessary to clean the formaldehyde, isobutylene and other substances in the reflux pipe 3 and the connecting ring, the rotating bar 12 is rotated through the cooperation of the motor 10, the rotating rod 11, the main gear 13 and the driven wheel 14. At the same time, the two tooth plates 7 are moved in the support tube 6 through the cooperation of the rotating rod 11, the rotating bar 12 and the two rotating gears 15, so as to facilitate the movement of the reflux pipe 3 and the connecting pipe 4 through the two supporting rings 8. At the same time, through the cooperation of the compression spring 16 and the elastic plate 17, the reflux pipe 3 and the connecting pipe 4 can be elastically supported, so as to facilitate the shaking and cleaning of the formaldehyde, isobutylene and other substances in the reflux pipe 3 and the connecting pipe 4, thereby reducing the influence of the blockage of the reflux pipe 3 and the connecting pipe 4 on the MTBE preparation and separation effect.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A separation and distillation tower for preparing MTBE from liquefied gas, characterized in that: include: Tower body(1); A reflux pump (2), wherein the reflux pump (2) is located on one side of the tower body (1); A reflux pipe (3), the reflux pipe (3) being connected to the top of the tower body (1); A connecting pipe (4), the connecting pipe (4) being connected to the bottom end of the tower body (1), and a telescopic pipe (5) being connected between the reflux pipe (3) and the connecting pipe (4) and the reflux pump (2); A support tube (6), wherein the support tube (6) is located on one side of the tower body (1); A tooth plate (7), wherein two tooth plates (7) are provided, and the two tooth plates (7) are both penetrated and slidably provided on the support tube (6) through a driving assembly; A support ring (8), wherein two support rings (8) are provided, and the two support rings (8) are respectively fixedly connected between the two tooth plates (7) and the return pipe (3) and the connecting pipe (4); The elastic tube (9) is provided in two pieces, the two elastic tubes (9) are respectively mounted on the return pipe (3) and the connecting pipe (4), and an elastic seat is installed in the elastic tube (9).

2. A separation and distillation tower for preparing MTBE from liquefied gas according to claim 1, characterized in that: The drive assembly comprises: A motor (10), wherein the motor (10) is installed in the support tube (6); A rotating rod (11), the rotating rod (11) being fixedly connected to the output end of the motor (10), and the rotating rod (11) being rotatably connected to the inner side wall of the supporting tube (6); a rotating bar (12), the rotating bar (12) being rotatably mounted on the inner top wall of the supporting tube (6), and the rotating rod (11) and the rotating bar (12) are respectively provided with a main gear (13) and a driven wheel (14), the main gear (13) being meshed with the driven wheel (14); The rotating gear (15) is provided with two rotating gears (15), the two rotating gears (15) are respectively fixedly connected to the rotating rod (11) and the rotating bar (12), and the tooth plate (7) is provided with tooth grooves matching the rotating gears (15).

3. A separation and distillation tower for preparing MTBE from liquefied gas according to claim 2, characterized in that: The elastic seat comprises: A compression spring (16), wherein the compression spring (16) is provided in plurality, and the plurality of compression springs (16) are all fixedly connected to the inner wall of the elastic tube (9); An elastic plate (17), wherein two elastic plates (17) are provided, and the two elastic plates (17) are respectively fixedly connected between the plurality of compression springs (16).

4. A separation and distillation tower for preparing MTBE from liquefied gas according to claim 3, characterized in that: The support tube (6) is provided with two through openings, and the two tooth plates (7) are respectively slidably mounted in the through openings.

5. A separation and distillation tower for preparing MTBE from liquefied gas according to claim 4, characterized in that: A support frame (18) is fixedly connected between the two elastic cylinders (9) and the support cylinder (6).

6. A separation and distillation tower for preparing MTBE from liquefied gas according to claim 5, characterized in that: A plurality of support columns (19) are fixedly connected to the bottom end of the support tube (6).

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