CN216630236U

CN216630236U - Improved molecular sieve of cryogenic air separation device

Info

Publication number: CN216630236U
Application number: CN202122600364.1U
Authority: CN
Inventors: 李伟国; 曹青; 周国庆; 严斌; 赵健
Original assignee: Changzhou Yingde Gas Co ltd
Current assignee: Changzhou Yingde Gas Co ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-05-31
Anticipated expiration: 2031-10-28

Abstract

The utility model discloses an improved molecular sieve of a cryogenic air separation device, which comprises a heating box, a base and a barrel, wherein the barrel is installed on one side of the top end of the base through an installation frame, a cover plate is installed on the top end of the barrel, a rotating shaft is installed in the middle of the bottom end of the cover plate, a molecular sieve barrel is installed at the bottom end of the rotating shaft, a connecting pipe is installed at the bottom end of the molecular sieve barrel, a three-way pipe is installed at the bottom end of the connecting pipe, the heating box is installed on one side, away from the barrel, of the top end of the base, a regeneration air pipe is installed on the position, close to the top end, of the outer side of the heating box, and a control panel is installed on the front surface of the heating box, close to the top end. The utility model can ensure the temperature stability of the molecular sieve regeneration gas, thereby ensuring the regeneration efficiency of the molecular sieve and reducing the energy consumption.

Description

Improved molecular sieve of cryogenic air separation device

Technical Field

The utility model relates to the technical field of molecular sieve regeneration, in particular to an improved molecular sieve of a cryogenic air separation device.

Background

The molecular sieve is a kind of synthetic hydrated aluminosilicate (zeolite) or natural zeolite with the function of screening molecules. It has many pore channels with uniform pore diameter and regularly arranged pores, and molecular sieves with different pore diameters separate molecules with different sizes and shapes. It has high adsorption capacity, high selectivity and high temperature resistance. It is widely used in organic chemical industry and petrochemical industry, and is also an excellent adsorbent for gas dehydration. Has been increasingly emphasized in exhaust gas purification.

Through mass retrieval, a molecular sieve regeneration system in the prior art is found, such as a molecular sieve regeneration system disclosed in the publication number CN213943159U, and the molecular sieve regeneration system is provided.

In the heating stage of molecular sieve regeneration of the cryogenic air separation device, high-temperature regeneration gas is required to heat the molecular sieve, the currently used heat source is steam heating, and the temperature of the regeneration gas after heat exchange is carried out between steam as the heat source and the regeneration gas is unstable due to the unstable temperature of low-pressure saturated steam pressure, so that the regeneration efficiency of the molecular sieve is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an improved molecular sieve of a cryogenic air separation device, which has the advantages of ensuring the temperature stability of molecular sieve regeneration gas so as to ensure the regeneration efficiency of the molecular sieve and simultaneously reducing the energy consumption, and solves the problem that the regeneration gas temperature after heat exchange between steam as a heat source and the regeneration gas is unstable due to the unstable steam pressure of low-pressure saturated steam when the heat source used at present is steam heating, so that the regeneration efficiency of the molecular sieve is reduced because the high-temperature regeneration gas is required to heat the molecular sieve in the heating stage of the molecular sieve regeneration of the cryogenic air separation device.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an improved generation molecular sieve of cryrogenic air separation plant, includes heating cabinet, base and barrel, the barrel is installed through the mounting bracket in base top one side, the apron is installed on the barrel top, apron bottom intermediate position department installs the pivot, a molecular sieve section of thick bamboo is installed to the pivot bottom, the connecting pipe is installed to molecular sieve section of thick bamboo bottom, the three-way pipe is installed to the connecting pipe bottom, the heating cabinet is installed to one side that the base top deviates from the barrel, the heating cabinet outside is close to top position department and installs regeneration trachea, the heating cabinet front surface is close to top position department and installs control panel.

Preferably, the middle position of the top end of the cover plate is provided with a rotating motor, and the output end of the rotating motor is connected with the top end of the rotating shaft.

Preferably, an input pipe is installed on one side, deviating from the heating box, of the top end of the cover plate, and an input valve is installed at the top end of the input pipe.

Preferably, an output valve is installed on one side of the three-way pipe, which is far away from the heating box, and an output pipe is installed on one side of the output valve, which is far away from the three-way pipe.

Preferably, the air inlet valve is installed to one side that the three-way pipe is close to the heating cabinet, the check valve is installed to one side that the air inlet valve deviates from the three-way pipe, the intake pipe is installed to one side that the check valve deviates from the air inlet valve, and intake pipe end-to-end connection is close to bottom position department in the heating cabinet inboard.

Preferably, the outlet duct is installed to one side that the barrel top is close to the heating cabinet, the air outlet valve is installed on the outlet duct top, the muffler is installed on air outlet valve top, and muffler end-to-end connection is on the heating cabinet top.

Preferably, the heating cabinet outside is located the position department below the regeneration trachea and installs the steam input tube, the heat exchange tube is installed to steam input tube end, and the heat exchange tube is located inside the heating cabinet, the steam output pipe is installed to the heat exchange tube end.

Preferably, the heating rod is installed to inside bottom intermediate position department of heating cabinet, temperature sensor is installed to one side that the inside bottom of heating cabinet is close to the barrel.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, by arranging the heating rod, the heat exchange tube, the rotating motor and the temperature sensor, the temperature stability of the molecular sieve regeneration gas can be ensured, so that the regeneration efficiency of the molecular sieve is ensured, and the energy consumption is reduced.

2. The utility model achieves the effects of facilitating the regeneration of the molecular sieve, saving the regeneration time of the molecular sieve and improving the production efficiency by arranging the air inlet valve, the air outlet valve, the input valve and the output valve, external cold air enters the barrel through the input pipe, is selectively adsorbed by the molecular sieve barrel and then is discharged through the three-way pipe and the output pipe, and when the molecular sieve barrel needs to be regenerated, the input valve and the output valve are closed, the air inlet valve and the air outlet valve are opened, and the molecular sieve barrel is heated and regenerated.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of A of FIG. 1;

FIG. 3 is a schematic front view of the present invention;

FIG. 4 is a partial schematic front view structure diagram of the three-way pipe of the utility model;

fig. 5 is a partial front view structural schematic diagram of the cylinder body of the utility model.

In the figure: 1. an air return pipe; 2. a heating box; 3. a control panel; 4. a base; 5. an output pipe; 6. a mounting frame; 7. a cylinder body; 8. a cover plate; 9. rotating the motor; 10. an air outlet valve; 11. an air outlet pipe; 12. an input tube; 13. an input valve; 14. regenerating the trachea; 15. a steam input pipe; 16. a heat exchange tube; 17. a heating rod; 18. a steam output pipe; 19. a temperature sensor; 20. a three-way pipe; 21. a molecular sieve cylinder; 22. an output valve; 23. an intake valve; 24. an air inlet pipe; 25. a one-way valve; 26. a rotating shaft; 27. and (4) connecting the pipes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 5, the present invention provides an improved molecular sieve for a cryogenic air separation plant: an improved molecular sieve of a cryogenic air separation device comprises a heating box 2, a base 4 and a barrel 7, wherein the barrel 7 is installed on one side of the top end of the base 4 through an installation frame 6, an air outlet pipe 11 is installed on one side, close to the heating box 2, of the top end of the barrel 7, an air outlet valve 10 is installed on the top end of the air outlet pipe 11, an air return pipe 1 is installed on the top end of the air outlet valve 10, the tail end of the air return pipe 1 is connected to the top end of the heating box 2, a cover plate 8 is installed on the top end of the barrel 7, a rotating motor 9 is installed at the middle position of the top end of the cover plate 8, the output end of the rotating motor 9 is connected with the top end of a rotating shaft 26, the rotating motor 9 works to drive a molecular sieve barrel 21 to rotate in the regeneration process of the molecular sieve barrel 21 so that the molecular sieve barrel 21 rotates and fully contacts with molecular sieve regenerated air, an input pipe 12 is installed on one side, which is far away from the heating box 2, an input valve 13 is installed on the top end of the input pipe 12, a rotating shaft 26 is installed at the middle position of the bottom end of the cover plate 8, a molecular sieve section of thick bamboo 21 is installed to pivot 26 bottom, connecting pipe 27 is installed to a molecular sieve section of thick bamboo 21 bottom, three-way pipe 20 is installed to connecting pipe 27 bottom, output valve 22 is installed to one side that three-way pipe 20 deviates from heating cabinet 2, output valve 22 is installed to one side that output valve 22 deviates from three-way pipe 20, admission valve 23 is installed to one side that three-way pipe 20 is close to heating cabinet 2, admission valve 23 deviates from one side of three-way pipe 20 and installs check valve 25, inside setting up of check valve 25 guaranteed that the molecular sieve regeneration gas after the heating enters into a molecular sieve section of thick bamboo 21 through intake pipe 24, intake pipe 24 is installed to one side that check valve 25 deviates from admission valve 23, and intake pipe 24 end-to-end connection is close to bottom position department in heating cabinet 2 inboard.

The heating box 2 is arranged on one side of the top end of the base 4, which is far away from the cylinder 7, the steam input pipe 15 is arranged at the position, which is arranged below the regeneration air pipe 14, on the outer side of the heating box 2, the heat exchange pipe 16 is arranged at the tail end of the steam input pipe 15, the heat exchange pipe 16 is arranged inside the heating box 2, the steam output pipe 18 is arranged at the tail end of the heat exchange pipe 16, the heating rod 17 is arranged at the middle position of the bottom end inside the heating box 2, the temperature sensor 19 is arranged on one side, which is close to the cylinder 7, of the bottom end inside the heating box 2, the molecular sieve regeneration air enters the heating box 2 through the regeneration air pipe 14 and then exchanges heat with the steam inside the heat exchange pipe 16 to improve the temperature, the molecular sieve regeneration air entering the air inlet pipe 24 is measured by the temperature sensor 19, the heating rod 17 is controlled to work, the temperature of the molecular sieve regeneration air is ensured to reach a preset value, the regeneration of the molecular sieve cylinder 21 is favorable for regeneration, the regeneration air pipe 14 is arranged at the position, which is close to the top end of the outer side of the heating box 2, the front surface of the heating box 2 is provided with a control panel 3 near the top end.

The working principle is as follows: the utility model is arranged at a place needing to be used, external cold air enters a cylinder body 7 through an input pipe 12, is selectively adsorbed by a molecular sieve cylinder 21 and then is discharged through a three-way pipe 20 and an output pipe 5, when the molecular sieve cylinder 21 needs to be regenerated, an input valve 13 and an output valve 22 are closed, an air inlet valve 23 and an air outlet valve 10 are opened, molecular sieve regenerated gas enters a heating box 2 through a regenerated air pipe 14 and then exchanges heat with steam inside a heat exchange pipe 16 to improve the temperature, the molecular sieve regenerated gas entering an air inlet pipe 24 is measured by a temperature sensor 19 to control a heating rod 17 to work, the temperature of the molecular sieve regenerated gas is ensured to reach a preset value, meanwhile, a motor 9 is rotated to work to drive the molecular sieve cylinder 21 to rotate, and the molecular sieve regenerated gas heats and regenerates the molecular sieve cylinder 21, thus the working flow of the utility model is completed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an improved generation molecular sieve of cryrogenic air separation plant, includes heating cabinet (2), base (4) and barrel (7), its characterized in that: barrel (7) are installed through mounting bracket (6) in base (4) top one side, apron (8) are installed on barrel (7) top, pivot (26) are installed to apron (8) bottom intermediate position department, a molecular sieve section of thick bamboo (21) are installed to pivot (26) bottom, connecting pipe (27) are installed to molecular sieve section of thick bamboo (21) bottom, three-way pipe (20) are installed to connecting pipe (27) bottom, heating cabinet (2) are installed to one side that base (4) top deviates from barrel (7), heating cabinet (2) outside is close to top position department and installs regeneration trachea (14), control panel (3) are installed near top position department to heating cabinet (2) front surface.

2. The improved molecular sieve of claim 1 in a cryogenic air separation plant, wherein: the middle position of the top end of the cover plate (8) is provided with a rotating motor (9), and the output end of the rotating motor (9) is connected with the top end of the rotating shaft (26).

3. The improved molecular sieve of claim 1 in a cryogenic air separation plant, wherein: input tube (12) are installed to one side that apron (8) top deviates from heating cabinet (2), input valve (13) are installed on input tube (12) top.

4. The improved molecular sieve of claim 1 in a cryogenic air separation plant, wherein: an output valve (22) is installed on one side of the three-way pipe (20) deviating from the heating box (2), and an output pipe (5) is installed on one side of the output valve (22) deviating from the three-way pipe (20).

5. The improved molecular sieve of claim 1 in a cryogenic air separation plant, wherein: air intake valve (23) are installed to one side that three-way pipe (20) are close to heating cabinet (2), check valve (25) are installed to one side that air intake valve (23) deviate from three-way pipe (20), air intake pipe (24) are installed to one side that check valve (25) deviate from air intake valve (23), and air intake pipe (24) end-to-end connection is close to bottom position department in heating cabinet (2) inboard.

6. The improved molecular sieve of claim 1 in a cryogenic air separation plant, wherein: the heating cabinet is characterized in that an air outlet pipe (11) is installed on one side, close to the heating cabinet (2), of the top end of the barrel body (7), an air outlet valve (10) is installed on the top end of the air outlet pipe (11), an air return pipe (1) is installed on the top end of the air outlet valve (10), and the end of the air return pipe (1) is connected to the top end of the heating cabinet (2).

7. The improved molecular sieve of claim 1 in a cryogenic air separation plant, wherein: the utility model discloses a steam heating device, including heating cabinet (2), regeneration trachea (14), heat exchange tube (16) are installed to the position department below being located in heating cabinet (2) outside, steam input tube (15) end is installed heat exchange tube (16), and inside heat exchange tube (16) were located heating cabinet (2), steam output pipe (18) are installed to heat exchange tube (16) end.

8. The improved molecular sieve of claim 1 in a cryogenic air separation plant, wherein: heating rod (17) are installed to inside bottom intermediate position department of heating cabinet (2), temperature sensor (19) are installed to one side that the inside bottom of heating cabinet (2) is close to barrel (7).