CN217527418U

CN217527418U - Gas-liquid mass transfer device

Info

Publication number: CN217527418U
Application number: CN202221269282.1U
Authority: CN
Inventors: 田义群; 曹杰; 彭春雪; 刘三六; 张锐; 覃华龙; 黄明华; 赵信文
Original assignee: Hubei Taisheng Chemical Co Ltd
Current assignee: Hubei Taisheng Chemical Co Ltd
Priority date: 2022-05-25
Filing date: 2022-05-25
Publication date: 2022-10-04
Anticipated expiration: 2032-05-25

Abstract

A gas-liquid mass transfer device comprises a main body structure consisting of a lower end enclosure, an upper end enclosure and a plurality of sections of tower sections, wherein a tower section partition plate is arranged at the joint of two adjacent sections of tower sections, a gas riser is arranged on the top surface of the tower section partition plate, a bell jar is covered outside the gas riser, and a plurality of circles of vent holes are arranged on the bell jar; a U-shaped overflow pipe is arranged on the tower section partition plate in a penetrating way; the side wall of the lower end socket is provided with an air inlet, and the bottom of the lower end socket is provided with a liquid outlet pipe; the side wall of the upper seal head is provided with an air outlet, and the top of the upper seal head is provided with a liquid inlet pipe. The utility model adopts the above structure, make the double-phase abundant contact of gas-liquid in order to improve its mass transfer effect, be suitable for the tail gas purification processing process in the double-phase mass transfer process and the environmental protection engineering in the various chemical production.

Description

Gas-liquid mass transfer device

Technical Field

The utility model relates to a mass transfer technical field, specific is a gas-liquid mass transfer device.

Background

The traditional gas-liquid mass transfer equipment mainly comprises a sieve plate tower, a float valve tower, a bubble cap tower, a packed tower and the like, and is widely applied to gas-liquid two-phase mass transfer operations such as distillation, absorption and the like, and is generally used for enabling the gas-liquid two phases to be in close contact so as to improve the mass transfer effect. Its advantages are high mass transfer efficiency, high absorption effect and high stability.

The traditional gas-liquid mass transfer equipment has the following defects:

1. the operation flexibility is small, and improper air speed control can cause liquid leakage and liquid foam entrainment, worsen the operation, reduce efficiency.

2. Due to material scaling, sieve holes of a sieve plate tower are easy to block, a float valve of a float valve tower is inflexible to rise and fall, gaps among filler towers are blocked, the materials which are easy to scale and have high viscosity are not suitable to be treated, and scaling post-treatment is difficult.

3. For the packed tower, in order to ensure the wetting rate of the packing, the packing in the tower needs to be arranged in sections and a distributor needs to be additionally arranged to ensure that the liquid is uniformly distributed, so that the investment is increased.

4. The float valve of the float valve tower is relatively complex to manufacture and install and is difficult to operate and maintain.

5. The gas flow passage in the sieve plate tower is tortuous, the installation and the maintenance are troublesome, and the pressure drop of the tower plate is large.

Disclosure of Invention

The utility model aims to solve the technical problem that a gas-liquid mass transfer device is provided, make the double-phase abundant contact of gas-liquid in order to improve its mass transfer effect, be suitable for the tail gas purification processing process in the double-phase mass transfer process and the environmental protection engineering in the various chemical production.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a gas-liquid mass transfer device comprises a main body structure consisting of a lower end enclosure, an upper end enclosure and a plurality of sections of tower sections, wherein a tower section partition plate is arranged at the joint of two adjacent sections of tower sections, a riser is arranged on the top surface of the tower section partition plate, a bell jar is covered outside the riser, and a plurality of circles of air vents are arranged on the bell jar;

and a U-shaped overflow pipe is arranged on the tower section partition plate in a penetrating way.

In the preferred scheme, the side wall of the lower end socket is provided with an air inlet, and the bottom of the lower end socket is provided with a liquid outlet pipe;

the side wall of the upper end enclosure is provided with an air outlet, and the top of the upper end enclosure is provided with a liquid inlet pipe.

In the preferred scheme, two adjacent tower sections are connected through flange plates at the upper end and the lower end of the side wall of the tower section, and a tower section partition plate is clamped between the two flange plates at the joint.

In a preferable scheme, the tower section partition plate is provided with a liquid dripping hole.

In a preferred scheme, the height of the upper end of the U-shaped overflow pipe is lower than that of the upper end of the gas rising pipe.

In a preferred scheme, the height of the group of vent holes positioned at the uppermost part in the plurality of circles of vent holes is lower than the height of the upper end of the U-shaped overflow pipe.

The utility model provides a gas-liquid mass transfer device through adopting above-mentioned structure, has following beneficial effect:

(1) The device is suitable for various different media, and the problem of blockage cannot occur;

(2) The mass transfer effect is improved by fully contacting the gas phase and the liquid phase, so that the method can be applied to a two-phase mass transfer process in various chemical unit operations and can also be applied to a tail gas purification and absorption treatment process in environmental protection engineering;

(3) The liquid-gas ratio range is large, the operation is convenient, and the operation is stable and reliable.

Drawings

The invention will be further explained with reference to the following figures and examples:

fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the intermediate tower segment partition plate and the related accessories of the present invention.

Fig. 3 is a schematic diagram of the gas-liquid flow direction in the operation process of the present invention.

In the figure: the tower comprises a lower seal head 1, a tower section 2, a flange plate 3, a tower section partition plate 4, a riser 5, a bell jar 6, a vent hole 7, an upper seal head 8, an air inlet 9, an air outlet 10, a liquid inlet pipe 11, a liquid outlet pipe 12, a 'U' -shaped overflow pipe 13, a liquid dropping hole 14 and a sight glass 15.

Detailed Description

As shown in fig. 1-2, a gas-liquid mass transfer device comprises a main body structure consisting of a lower end enclosure 1, an upper end enclosure 8 and a plurality of sections of tower sections 2, wherein a tower section partition plate 4 is arranged at the joint of two adjacent sections of tower sections 2, a gas lift pipe 5 is arranged on the top surface of the tower section partition plate 4, a bell jar 6 is covered outside the gas lift pipe 5, and a plurality of circles of vent holes 7 are arranged on the bell jar 6;

and a U-shaped overflow pipe 13 is arranged on the tower section partition plate 4 in a penetrating way.

In a preferred scheme, the side wall of the lower end socket 1 is provided with an air inlet 9, and the bottom of the lower end socket is provided with a liquid outlet pipe 12;

the side wall of the upper end enclosure 8 is provided with an air outlet 10, and the top of the upper end enclosure is provided with a liquid inlet pipe 11.

In the preferred scheme, two adjacent tower sections 2 are connected through flange plates 3 at the upper end and the lower end of the side wall of the tower section 2, and a tower section partition plate 4 is clamped between the two flange plates 3 at the connection part.

In a preferable scheme, the tower section partition plate 4 is provided with a liquid dropping hole 14.

In a preferred scheme, the height of the upper end of the U-shaped overflow pipe 13 is lower than that of the upper end of the gas lift pipe 5.

In a preferred scheme, the height of the uppermost group of the vent holes 7 in the plurality of circles of vent holes 7 is lower than the height of the upper end of the U-shaped overflow pipe 13.

The utility model provides a gas-liquid mass transfer device, when carrying out gas-liquid mass transfer (waste gas absorption treatment):

as shown in fig. 1 and 3 (in fig. 3, the dotted line indicates the gas flow direction, and the solid line indicates the liquid flow direction):

the gas enters from a gas inlet 9 on a lower end socket 1 at the bottom of the device, rises into a bell jar 6 through a gas riser 5, passes through a liquid seal layer from a vent hole 7 on the bell jar 6 under the action of pressure and enters into an upper tower section 2, and the gas sequentially enters into the multi-stage tower sections 2 and is finally discharged from a gas outlet 10.

Liquid enters from a liquid inlet pipe 11 of an upper seal head 8 on the top of the tower, is gathered in a gap between a cylinder body of the tower section 2 on the top and the bell jar 6, overflows to the tower section 2 on the lower layer from a U-shaped overflow pipe 13 after the liquid is accumulated to a certain height, and enters the multi-stage tower section 2 for a time by the same principle and is finally discharged from a liquid outlet pipe 12.

When gas passes through the liquid seal layer from the vent hole 7 and enters the upper tower section under the action of pressure, the gas phase and the liquid phase are fully contacted, and the purpose of mass transfer is achieved.

In the actual operation in-process, dropping liquid phenomenon can continuously take place for dropping liquid hole 14, but the dropping liquid speed is lower can not influence normal operation, accomplishes the mass transfer operation after, during equipment shut down, dropping liquid hole 14 lasts the dropping liquid, discharges the liquid part that remains in tower section 2.

Claims

1. A gas-liquid mass transfer device is characterized in that: the tower comprises a main body structure consisting of a lower end socket (1), an upper end socket (8) and a plurality of sections of tower sections (2), wherein a tower section partition plate (4) is arranged at the joint of two adjacent sections of tower sections (2), a gas lift pipe (5) is arranged on the top surface of the tower section partition plate (4), a bell jar (6) is covered outside the gas lift pipe (5), and a plurality of circles of vent holes (7) are arranged on the bell jar (6);

and a U-shaped overflow pipe (13) is arranged on the tower section partition plate (4) in a penetrating manner.

2. A gas-liquid mass transfer device according to claim 1, characterized in that: the side wall of the lower end enclosure (1) is provided with an air inlet (9), and the bottom of the lower end enclosure is provided with a liquid outlet pipe (12);

the side wall of the upper end enclosure (8) is provided with an air outlet (10), and the top of the upper end enclosure is provided with a liquid inlet pipe (11).

3. A gas-liquid mass transfer device according to claim 1, characterized in that: the adjacent two tower sections (2) are connected through flange plates (3) at the upper end and the lower end of the side wall of the tower section (2), and a tower section partition plate (4) is clamped between the two flange plates (3) at the joint.

4. A gas-liquid mass transfer device according to claim 1, characterized in that: and the tower section partition plate (4) is provided with a liquid dropping hole (14).

5. A gas-liquid mass transfer device according to claim 1, characterized in that: the height of the upper end of the U-shaped overflow pipe (13) is lower than that of the upper end of the riser pipe (5).

6. A gas-liquid mass transfer device according to claim 1, characterized in that: among the plurality of circles of vent holes (7), the height of the group of vent holes (7) positioned at the uppermost part is lower than the height of the upper end of the U-shaped overflow pipe (13).