CN215505940U

CN215505940U - Multistage gas-liquid separator for tetrahydrofuran rectification

Info

Publication number: CN215505940U
Application number: CN202121289016.0U
Authority: CN
Inventors: 高建明; 张明
Original assignee: Tianjin Diester Energy Saving Equipment Technology Co ltd
Current assignee: Tianjin Diester Energy Saving Equipment Technology Co ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2022-01-14
Anticipated expiration: 2031-06-09

Abstract

The utility model provides a multi-stage gas-liquid separator for tetrahydrofuran rectification, which comprises a tank body, wherein the lower end of the side wall of the tank body is provided with a first-stage inlet, the top of the tank body is provided with a gas outlet, and the bottom of the tank body is provided with a liquid outlet; an inner shell is arranged inside the tank body; the bottom of the inner shell is provided with a liquid outlet, and the upper end of the side wall is provided with a secondary inlet; a baffle plate is arranged between the outer side wall of the inner shell and the inner side wall of the tank body; the inner cavity of the inner shell is provided with a centrifugal separation device, and the centrifugal separation device comprises an inner column and a helical blade; the inner part of the inner column is hollow, the top part of the inner column is connected with the inner shell, the gas outlet is communicated with the inner cavity of the inner column, and the lower end of the inner column is provided with a gas inlet; the helical blade is arranged on the outer side wall of the inner column. The multi-stage gas-liquid separator for tetrahydrofuran rectification disclosed by the utility model adopts a multi-stage separation mode, and has the advantages of good separation effect, high efficiency and wide application range.

Description

Multistage gas-liquid separator for tetrahydrofuran rectification

Technical Field

The utility model relates to the field of chemical equipment, in particular to a multistage gas-liquid separator for tetrahydrofuran rectification.

Background

Tetrahydrofuran is an important organic synthetic raw material and a solvent with excellent performance, and is widely applied in the fields of chemical industry, pharmacy and the like. Tetrahydrofuran requires a gas-liquid separator during the rectification. During the cooling or pressurizing process of saturated gas, a part of condensable gas components can form small droplets and flow together with the gas, and the gas-liquid separator is used for treating the gas containing the condensate to realize the recovery of the condensate or the purification of the gas. The gas-liquid separator has various types, such as a gravity settling separator, a baffling separator, a centrifugal separator, a filler separator, a wire mesh separator, a microporous filtering separator and the like, and each gas-liquid separator has respective advantages and disadvantages, such as the baffling gas-liquid separator, simple structure, low manufacturing cost and wide application, but also has the problems of low separation efficiency and poor effect; the separation efficiency and the separation effect of the centrifugal gas-liquid separator are superior to those of baffling separation, but when the gas-liquid flow speed is too high, separated liquid is easily taken away again.

Disclosure of Invention

The utility model aims to solve the technical problems and provides a multi-stage gas-liquid separator for tetrahydrofuran rectification, which effectively improves the separation efficiency and effect and improves the separation load range in a multi-stage separation mode.

In order to solve the technical problems, the utility model adopts the technical scheme that:

a multi-stage gas-liquid separator for tetrahydrofuran rectification comprises a tank body, wherein a first-stage inlet is formed in the lower end of the side wall of the tank body, a gas outlet is formed in the top of the tank body, and a liquid outlet is formed in the bottom of the tank body; an inner shell suspended in the inner cavity of the tank body is arranged in the tank body; a liquid outlet is formed in the bottom of the inner shell, and a secondary inlet is formed in the upper end of the side wall of the inner shell; a baffle plate is arranged between the outer side wall of the inner shell and the inner side wall of the tank body; the inner cavity of the inner shell is provided with a centrifugal separation device, and the centrifugal separation device comprises an inner column and a helical blade; the inner column is hollow, the top of the inner column is connected with the inner shell, the gas outlet is communicated with the inner cavity of the inner column, and the lower end of the inner column is provided with a gas inlet; the helical blade is arranged on the outer side wall of the inner column and forms a helical channel.

Furthermore, a plurality of baffle plates are arranged between the outer side wall of the inner shell and the inner side wall of the tank body in a staggered manner; the baffle is positioned between the primary inlet and the secondary inlet.

Furthermore, the inner shell is fixed with the inner wall of the tank body through a support piece.

Furthermore, a liquid outlet pipe which extends downwards to the liquid outlet is arranged at the liquid outlet.

Furthermore, the gas inlet at the lower end of the inner column is positioned below the helical blade and is of a wire mesh structure.

Furthermore, the bottom of the inner column is provided with a bottom plate of a silk screen structure, and the vertical section of the bottom plate is V-shaped.

Furthermore, a vertically downward liquid guide plate is arranged at the bottom of the V-shaped structure of the bottom plate.

The utility model has the advantages and positive effects that:

(1) the two-stage separation mode is adopted, the first stage adopts a baffling separation mode, the baffle plate firstly performs first-stage separation on the entering gas and liquid, the second stage adopts a centrifugal separation mode, and the centrifugal separation device performs second-stage separation on the gas and liquid after the first-stage separation, so that the separation effect and the separation efficiency are effectively improved; meanwhile, due to the existence of the primary separation, the entering gas and liquid collide with the baffle plate firstly, the flow velocity of the gas and the liquid is reduced, the gas with the excessively high flow velocity is prevented from flowing into the secondary separation part, the centrifugal separation effect is prevented from being influenced, and the separation load range is enlarged.

(2) Liquid separated by the baffle plate is collected at a liquid outlet at the bottom of the tank body, and liquid separated by centrifugation is collected at the liquid outlet through a liquid outlet pipe at the bottom of the inner shell, so that the separated liquid can be conveniently collected; the gas inlet of the inner column of the centrifugal separation device is of a wire mesh structure, and materials after centrifugal separation can be separated again through the wire mesh, so that the separation effect is further optimized; the bottom plate at the bottom of the inner column is of a V-shaped structure, so that liquid can be collected to the center of the bottom plate and then is left by the liquid guide plate, and separated liquid can be discharged in time.

Drawings

FIG. 1 is a schematic structural view of a multistage gas-liquid separator for tetrahydrofuran rectification according to the present invention.

In the figure:

1. a tank body; 2. a primary inlet; 3. a gas outlet; 4. a liquid outlet; 5. an inner shell; 6. a secondary inlet; 7. a baffle plate; 8. an inner column; 9. a helical blade; 10. a gas inlet; 11. a support member; 12. a liquid outlet pipe; 13. a base plate; 14. a liquid guide plate.

Detailed Description

The following detailed description of specific embodiments of the utility model refers to the accompanying drawings.

As shown in fig. 1, a multi-stage gas-liquid separator for tetrahydrofuran rectification comprises a tank body 1, a bracket for supporting the tank body 1, and an inner shell 5 arranged inside the tank body 1;

wherein, the lower end of the side wall of the tank body 1 is provided with a primary inlet 2, the top is provided with a gas outlet 3, and the bottom is provided with a liquid outlet 4;

the inner shell 5 is suspended in the inner cavity of the tank body 1 through a supporting piece 11, the bottom of the inner shell 5 is provided with a liquid outlet, and the liquid outlet is provided with a liquid outlet pipe 12 which extends downwards to the liquid outlet 4; the upper end of the side wall of the inner shell 5 is provided with a secondary inlet 6;

a baffle plate 7 is arranged between the outer side wall of the inner shell 5 and the inner side wall of the tank body 1; a plurality of baffle plates 7 are arranged between the outer side wall of the inner shell 5 and the inner side wall of the tank body 1 in a staggered way; the baffle plate 7 is positioned between the primary inlet 2 and the secondary inlet 6;

the inner cavity of the inner shell 5 is provided with a centrifugal separation device, and the centrifugal separation device comprises an inner column 8 and a helical blade 9; the inner part of the inner column 8 is hollow, the top part of the inner column is connected with the inner shell 5, the gas outlet 3 is communicated with the inner cavity of the inner column 8, and the lower end of the inner column 8 is provided with a gas inlet 10; the helical blade 9 is arranged on the outer side wall of the inner column 8 and forms a helical channel; the gas inlet 10 at the lower end of the inner column 8 is positioned below the helical blade 9 and is of a wire mesh structure; the bottom of inner column 8 is equipped with the bottom plate 13 of silk screen structure, and the vertical cross-section of bottom plate 13 is the V type, and the bottom of the V type structure of bottom plate 13 is equipped with vertical decurrent drain board 14.

The working process of the multistage gas-liquid separator for tetrahydrofuran rectification comprises the following steps:

gas-liquid to be separated entering through the primary inlet 2 rises to meet the baffle plate 7, primary gas-liquid separation is carried out through the baffle plate 7, collected liquid falls into the bottom of the tank body 1, unseparated gas-liquid enters the inner shell 5 through the secondary inlet 6, and rotary motion is carried out under the action of the helical blades 9, different centrifugal forces are generated due to the difference of the mass of the gas and the mass of the liquid, the liquid with large mass is thrown to the outer ring by the large centrifugal force, the gas with small mass is positioned in the inner ring by the small centrifugal force, so that the liquid and the liquid are separated, and the liquid sinks to the bottom of the inner shell 5 under the action of gravity and flows out through the liquid outlet pipe 12; the gas enters the inner cavity of the inner column 8 through the gas inlet of the wire mesh structure on the inner column 8 and is finally discharged through the gas outlet 3.

The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.

Claims

1. The utility model provides a multistage vapour and liquid separator is used in tetrahydrofuran rectification, includes a jar body (1), the lateral wall lower extreme of jar body (1) is equipped with one-level import (2), and the top is equipped with gas outlet (3), and the bottom is equipped with liquid outlet (4), its characterized in that: an inner shell (5) suspended in the inner cavity of the tank body (1) is arranged in the tank body (1); a liquid outlet is formed in the bottom of the inner shell (5), and a secondary inlet (6) is formed in the upper end of the side wall; a baffle plate (7) is arranged between the outer side wall of the inner shell (5) and the inner side wall of the tank body (1); the inner cavity of the inner shell (5) is provided with a centrifugal separation device, and the centrifugal separation device comprises an inner column (8) and a helical blade (9); the inner part of the inner column (8) is hollow, the top of the inner column is connected with the inner shell (5), the gas outlet (3) is communicated with the inner cavity of the inner column (8), and the lower end of the inner column (8) is provided with a gas inlet (10); the helical blade (9) is arranged on the outer side wall of the inner column (8) and forms a helical channel.

2. The multi-stage gas-liquid separator for tetrahydrofuran rectification according to claim 1, wherein: a plurality of baffle plates (7) are arranged between the outer side wall of the inner shell (5) and the inner side wall of the tank body (1) in a staggered manner; the baffle plate (7) is positioned between the primary inlet (2) and the secondary inlet (6).

3. The multi-stage gas-liquid separator for tetrahydrofuran rectification according to claim 1, wherein: the inner shell (5) is fixed with the inner wall of the tank body (1) through a support piece (11).

4. The multi-stage gas-liquid separator for tetrahydrofuran rectification according to claim 1, wherein: and a liquid outlet pipe (12) extending downwards to the liquid outlet (4) is arranged at the liquid outlet.

5. The multistage gas-liquid separator for the rectification of tetrahydrofuran according to any one of claims 1 to 4, wherein: the gas inlet (10) at the lower end of the inner column (8) is positioned below the helical blade (9) and is of a wire mesh structure.

6. The multi-stage gas-liquid separator for tetrahydrofuran rectification according to claim 5, wherein: the bottom of the inner column (8) is provided with a bottom plate (13) of a silk screen structure, and the vertical section of the bottom plate (13) is V-shaped.

7. The multi-stage gas-liquid separator for tetrahydrofuran rectification according to claim 6, wherein: and a vertically downward liquid guide plate (14) is arranged at the bottom of the V-shaped structure of the bottom plate (13).