Vacuum rectifying tower

Abstract

The utility model belongs to the technical field of rectifying equipment, and particularly relates to a vacuum rectifying tower which comprises a rectifying tower main body which comprises a plurality of tower sections which are sequentially connected from top to bottom; the vacuum device is arranged on one side of the rectifying tower main body and is used for vacuumizing the interior of the rectifying tower main body; the feeding hole is formed in the top of the rectifying tower main body; the vacuum sealing device comprises an outer sealing cover used for sealing the joint of the two tower sections; wherein the vacuum sealing device is arranged between the upper tower section and the lower tower section which are adjacent to each other, and compared with the prior art, the vacuum rectifying tower has the advantage that the sealing stability of the vacuum rectifying tower is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of distillation equipment, in particular to a vacuum distillation tower. Background Art

[0002] A vacuum distillation tower is a device that uses vacuum technology to lower the boiling point of liquids for separation. It can distill mixtures that cannot be effectively separated under normal pressure under low-pressure conditions, reducing the risk of thermal decomposition and decomposition. The tower is equipped with packing or trays to increase the contact area between liquid and vapor, thereby improving separation efficiency. A vacuum distillation tower generally consists of a tower body composed of several tower sections and a vacuum device. For example, the patent application number CN201610467648.9 discloses a segmented packed distillation tower. The distillation tower includes a detachable section and a fixed section. The detachable section and the fixed section are connected by a detachable structure. A vacuum pipe is provided at the top of the distillation tower, and the bottom is connected to a reactor.

[0003] During use of this existing vacuum distillation tower, the sealing effect of the connection between the tower sections is not stable enough, which leads to the unstable vacuum degree of the vacuum distillation tower, making it easy for the separation efficiency to be reduced during the vacuum distillation operation. Therefore, it is necessary to make improvements. Utility Model Content

[0004] The purpose of the utility model is to provide a vacuum distillation tower in order to improve the vacuum stability of the vacuum distillation tower and improve the separation efficiency.

[0005] In view of this, the present invention provides a vacuum distillation tower, comprising:

[0006] A distillation tower body, the distillation tower body comprising a plurality of tower sections connected in sequence up and down;

[0007] A vacuum device is provided on one side of the distillation tower body for evacuating the interior of the distillation tower body;

[0008] A feed inlet, the feed inlet being arranged at the top of the distillation tower body;

[0009] Also includes:

[0010] A vacuum sealing device, comprising an outer sealing cover for sealing the connection between the two tower sections;

[0011] Wherein, the vacuum sealing device is arranged between two upper and lower adjacent tower sections.

[0012] In this technical solution, during the assembly process of the vacuum distillation tower, a plurality of tower sections connected in sequence up and down are combined into a distillation tower body. The outer sealing cover in the vacuum sealing device can effectively seal the connection between the two tower sections, thereby improving the sealing stability of the connection between the two tower sections and reducing the occurrence of reduced separation efficiency during vacuum distillation operations.

[0013] In the above technical solution, further, the outer sealing cover also includes:

[0014] An upper cover body, the upper cover body being arranged above the connection between the two tower sections, and the bottom of the upper cover body having an upper extension edge inclined toward the outside of the tower sections;

[0015] A lower cover body, the lower cover body is arranged below the connection between the two tower sections, and the bottom of the lower cover body has a lower extension edge inclined toward the outside of the tower sections;

[0016] Among them, the upper cover body and the lower cover body are both annular, the upper extension and the lower extension are both skirt-shaped, the top end of the upper cover body and the bottom end of the lower cover body are welded to the side wall of the tower section, and the end of the upper extension away from the tower section is welded to the end of the lower extension away from the tower section.

[0017] In the above technical solution, further, the outer sealing cover also includes:

[0018] The sensor group includes an air pressure sensor and a flow rate sensor arranged on the inner side of the outer sealing cover.

[0019] In the above technical solution, further, the vacuum sealing device also includes:

[0020] A connecting seat, the connecting seat is arranged at the connecting end of the tower section, and a sealing groove is provided on the connecting surface of the connecting seat;

[0021] A sealing ring, the sealing ring being arranged in the sealing groove;

[0022] Wherein, two adjacent connecting seats are respectively provided with a positioning groove and a positioning block.

[0023] In the above technical solution, further, the sealing ring also includes:

[0024] A sealing body, wherein a cavity is provided in the sealing body, an opening extending along the circumference of the sealing body is provided on the outer wall of the sealing body, and the cross section of the sealing body is in an inverted C shape;

[0025] The sealing convex ring has two sealing convex rings and is symmetrically arranged at the upper and lower ends of the sealing body. The sealing convex ring is concentric with the sealing body.

[0026] In the above technical solution, further, the sealing ring also includes:

[0027] The sealing sub-body is arranged on the inner side of the sealing main body and connected to the inner wall of the sealing main body. The sealing sub-body is provided with a plurality of sealing protrusions.

[0028] The beneficial effects of the utility model are:

[0029] 1. The setting of the external sealing cover can effectively seal the connection between the two tower sections, improve the sealing stability of the connection between the two tower sections, and reduce the phenomenon of reduced separation efficiency during vacuum distillation operation;

[0030] 2. The upper and lower extensions in the outer sealing cover can effectively cope with the stress between tower sections caused by heat, further improving the sealing stability of the distillation tower body;

[0031] 3. Through the setting of the sealing ring, the sealing ring and the outer sealing cover cooperate to form a double seal, which further improves the sealing stability of the distillation tower body. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0033] Figure 1 It is a structural schematic diagram of a specific implementation method of the present utility model.

[0034] Figure 2 This is a schematic diagram of the structure of the outer sealing cover of the utility model.

[0035] Figure 3 This is a structural diagram of the connecting seat of the utility model.

[0036] Figure 4 This is a schematic diagram of the sealing ring structure of the utility model.

[0037] Figure 5 This is a schematic diagram of the cross-sectional structure of the sealing ring of the utility model.

[0038] The marks in the figure are:

[0039] 1. Distillation tower body; 100. Tower section; 2. Vacuum device; 3. Feed inlet; 4. Vacuum sealing device; 40. Outer sealing cover; 401. Upper cover body; 402. Upper extension; 403. Lower cover body; 404. Lower extension; 41. Air pressure sensor; 42. Flow rate sensor; 43. Connecting seat; 44. Sealing groove; 45. Sealing ring; 450. Sealing body; 451. Cavity; 452. Opening; 453. Sealing convex ring; 454. Sealing sub-body; 455. Sealing protrusion; 46. Positioning groove; 47. Positioning block. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] In the description of this application, it should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0042] Example 1:

[0043] The embodiment of the present application provides a vacuum distillation tower, comprising: a distillation tower body 1, the distillation tower body 1 including a plurality of tower sections 100 connected in sequence up and down; a vacuum device 2, the vacuum device 2 being disposed on one side of the distillation tower body 1 for evacuating the interior of the distillation tower body 1; and a feed port 3, the feed port 3 being disposed on the top of the distillation tower body 1.

[0044] It also includes: a vacuum sealing device 4, the vacuum sealing device 4 includes an outer sealing cover 40 for sealing the connection between the two tower sections 100;

[0045] The vacuum sealing device 4 is arranged between two upper and lower adjacent tower sections 100 .

[0046] Moreover, the vacuum device 2 is a conventional vacuum device 2, including a vacuum pump, a vacuum connecting pipe, a box body and other structures, and the vacuum distillation tower also includes a conventional control unit.

[0047] In this embodiment, during the assembly process of the vacuum distillation tower, a plurality of tower sections 100 connected in sequence up and down are combined into a distillation tower body 1. The outer sealing cover 40 in the vacuum sealing device 4 can effectively seal the connection between the two tower sections 100, thereby improving the sealing stability of the connection between the two tower sections 100 and reducing the occurrence of reduced separation efficiency during the vacuum distillation operation.

[0048] Example 2:

[0049] This embodiment provides a vacuum distillation tower. In addition to the technical solutions of the above embodiments, it also has the following technical features: the outer sealing cover 40 further includes: an upper cover body 401, which is arranged above the connection between the two tower sections 100, and the bottom of the upper cover body 401 has an upper extension 402 inclined toward the outside of the tower section 100; a lower cover body 403, which is arranged below the connection between the two tower sections 100, and the bottom of the lower cover body 403 has a lower extension 404 inclined toward the outside of the tower section 100;

[0050] Among them, the upper cover body 401 and the lower cover body 403 are both annular, the upper extension 402 and the lower extension 404 are both skirt-shaped, the top end of the upper cover body 401 and the bottom end of the lower cover body 403 are welded to the side wall of the tower section 100, and the end of the upper extension 402 away from the tower section 100 is welded to the end of the lower extension 404 away from the tower section 100.

[0051] Moreover, the welding between the upper cover body 401, the lower cover body 403 and the side wall of the tower section 100 is conventional sealing welding, and the welding between the upper extension 402 and the lower extension 404 is also conventional sealing welding. The cross-section of the upper cover body 401, the upper extension 402 and the lower cover body 403, the lower extension 404 after welding is conical barrel-shaped.

[0052] In this embodiment, the outer sealing cover 40 connects the two adjacent tower sections 100 together and welds them through the upper cover body 401 and the lower cover body 403, the upper extension 402 and the lower extension 404, thereby effectively sealing the connection between the two tower sections 100, improving the sealing stability of the vacuum distillation tower. At the same time, the upper extension 402 and the lower extension 404 can effectively eliminate the stress generated when the distillation tower main body 1 is heated, further improving the stability of the distillation tower main body 1 during operation, thereby improving the sealing stability of the connection between the two tower sections 100.

[0053] Example 3:

[0054] This embodiment provides a vacuum distillation tower, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the outer sealing cover 40 also includes: a sensor group, the sensor group includes an air pressure sensor 41 and a flow rate sensor 42 arranged on the inner side of the outer sealing cover 40.

[0055] Moreover, the air pressure sensor 41 and the flow rate sensor 42 in the sensor group are conventional sensors, and preferably wireless sensors. The air pressure sensor 41 and the flow rate sensor 42 can be connected to the control unit of the vacuum distillation column.

[0056] In this embodiment, by setting up the air pressure sensor 41 and the flow rate sensor 42, the air pressure and gas flow rate inside the outer sealing cover 40 can be effectively monitored. When the sealing failure occurs, the air pressure and gas flow rate inside the outer sealing cover 40 change. The air pressure sensor 41 and the flow rate sensor 42 can monitor the changes in time and provide feedback to remind the staff, so that the staff can carry out maintenance and repairs in time.

[0057] Example 4:

[0058] This embodiment provides a vacuum distillation tower. In addition to the technical solutions of the above embodiments, it also has the following technical features: the vacuum sealing device 4 further includes: a connecting seat 43, the connecting seat 43 is arranged at the connecting end of the tower section 100, and a sealing groove 44 is provided on the connecting surface of the connecting seat; a sealing ring 45, the sealing ring 45 is arranged in the sealing groove 44;

[0059] Two adjacent connecting seats 43 are respectively provided with a positioning groove 46 and a positioning block 47 .

[0060] The sealing ring 45 also includes: a sealing body 450, a cavity 451 is provided in the sealing body 450, an opening 452 extending circumferentially along the sealing body 450 is provided on the outer wall of the sealing body 450, and the cross-section of the sealing body 450 is an inverted C-shape; a sealing convex ring 453, which has two sealing convex rings 453 and is symmetrically arranged at the upper and lower ends of the sealing body 450, and the sealing convex ring 453 is concentric with the sealing body 450.

[0061] The sealing ring 45 further includes a sealing sub-body 454 . The sealing sub-body 454 is disposed on the inner side of the sealing main body 450 and connected to the inner wall of the sealing main body 450 . A plurality of sealing protrusions 455 are disposed on the sealing sub-body 454 .

[0062] In this embodiment, by setting the sealing ring 45, the sealing ring 45 cooperates with the outer sealing cover 40 to form a double seal, which further improves the sealing stability of the distillation tower main body 1. At the same time, the sealing body 450 of the sealing ring 45 has a cavity 451 and an opening 452, so that during the operation of the sealing ring 45, the surface of the sealing body 450 can be tightly attached to the inner wall of the sealing groove 44 under the action of the internal and external pressure difference, thereby improving the sealing stability of the sealing surface of the sealing ring 45. The sealing convex ring 453 can further form a sealing surface to ensure the sealing effect of the sealing body 450. At the same time, through the setting of the sealing sub-body 454, the several sealing protrusions 455 on the sealing sub-body 454 can further cooperate with the sealing groove 44 to form multiple sealing surfaces, thereby improving the sealing stability of the distillation tower main body 1.

[0063] The embodiments of the present application are described above in conjunction with the accompanying drawings. Unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A vacuum distillation tower comprising: A distillation tower body (1), the distillation tower body (1) comprising a plurality of tower sections (100) connected in sequence up and down; A vacuum device (2), the vacuum device (2) being arranged on one side of the distillation tower body (1) and used for evacuating the interior of the distillation tower body (1); A feed inlet (3), the feed inlet (3) being arranged at the top of the distillation tower body (1); It is characterized by further comprising: A vacuum sealing device (4), comprising an outer sealing cover (40) for sealing a connection between two tower sections (100); The vacuum sealing device (4) is arranged between two upper and lower adjacent tower sections (100).

2. A vacuum distillation tower according to claim 1, characterized in that, The outer sealing cover (40) further comprises: An upper cover body (401), the upper cover body (401) being arranged above the connection point of the two tower sections (100), and the bottom of the upper cover body (401) having an upper extension edge (402) inclined toward the outside of the tower section (100); A lower cover body (403), the lower cover body (403) being arranged below the connection point of the two tower sections (100), and the bottom of the lower cover body (403) having a lower extension edge (404) inclined toward the outside of the tower section (100); The upper cover body (401) and the lower cover body (403) are both annular, the upper extension (402) and the lower extension (404) are both skirt-shaped, the top end of the upper cover body (401) and the bottom end of the lower cover body (403) are both welded to the side wall of the tower section (100), and the end of the upper extension (402) away from the tower section (100) is welded to the end of the lower extension (404) away from the tower section (100).

3. A vacuum distillation tower according to claim 2, characterized in that, The outer sealing cover (40) further comprises: A sensor group, comprising an air pressure sensor (41) and a flow rate sensor (42) arranged inside an outer sealing cover (40).

4. A vacuum distillation tower according to claim 1, characterized in that: The vacuum sealing device (4) further comprises: A connecting seat (43), the connecting seat (43) being arranged at a connecting end of the tower section (100), and a sealing groove (44) being arranged on a connecting surface of the connecting seat (43); A sealing ring (45), wherein the sealing ring (45) is disposed in the sealing groove (44); Wherein, two adjacent connecting seats (43) are respectively provided with a positioning groove (46) and a positioning block (47).

5. A vacuum distillation tower according to claim 4, characterized in that: The sealing ring (45) further comprises: A sealing body (450), wherein a cavity (451) is provided in the sealing body (450), an opening (452) extending along the circumference of the sealing body (450) is provided on the outer wall of the sealing body (450), and the cross section of the sealing body (450) is in an inverted C shape; The sealing convex ring (453) has two sealing convex rings (453) and is symmetrically arranged at the upper and lower ends of the sealing body (450). The sealing convex ring (453) is concentric with the sealing body (450).

6. A vacuum distillation tower according to claim 5, characterized in that: The sealing ring (45) further comprises: A sealing sub-body (454) is provided on the inner side of the sealing main body (450) and connected to the inner wall of the sealing main body (450). A plurality of sealing protrusions (455) are provided on the sealing sub-body (454).

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