CN211753813U

CN211753813U - Methane decarbonization and impurity removal device

Info

Publication number: CN211753813U
Application number: CN201922284681.XU
Authority: CN
Inventors: 穆云飞; 龚晓科; 穆晓郞; 尹湘; 成蔚帆
Original assignee: Ningxia Kai Tian Gas Development Co ltd
Current assignee: Ningxia Kai Tian Gas Development Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-10-27
Anticipated expiration: 2029-12-18

Abstract

The utility model discloses a methane decarbonization edulcoration device relates to the chemical processing field, including lower shell, the bottom of shell is provided with the air inlet down, the outside of shell is provided with the electrothermal tube down, the top of shell is provided with the shell down, the vacuum pump passes through the vacuum tube and is connected with one side of shell down, the inside of shell is provided with organic amine solution down. The utility model discloses an electrothermal tube that sets up, the vacuum pump, valve and mist export, carbon dioxide in organic amine solution and the methane mist takes place to absorb the reaction and carries out decarbonization purification methane, the decarbonization solution that absorbs the dioxygen carbon becomes rich liquid, heat rich liquid through the electrothermal tube, the vacuum pump is the low pressure with the device internal air pressure drop, rich liquid takes place reverse analytic reaction under the condition of low-pressure high temperature, release high-purity carbon dioxide gas, discharge from the mist export, rich liquid obtains regenerating simultaneously, the difficult problem of dismantling of integral type has effectively been solved.

Description

Methane decarbonization and impurity removal device

Technical Field

The utility model relates to a chemical processing field specifically is methane decarbonization edulcoration device.

Background

The static mixer is a high-efficiency mixing device without moving parts, the basic working mechanism of the static mixer is to change the flowing state of fluid in a pipe by using a mixing unit body fixed in the pipe so as to achieve the purposes of good dispersion and full mixing of different fluids, methane is also a flowing gas, and when the methane is mixed, the methane needs to be filtered to remove impurities in the methane so as to improve the quality of the mixture.

Present methane decarbonization edulcoration device in market today, the physical and chemical absorption characteristic of generally adopting organic amine solution and carbon dioxide realizes the separation of carbon dioxide in the methane, but need change new solution with the organic amine solution discharge in the device behind the carbon dioxide of organic amine solution absorption capacity, efficiency is not high like this, easily cause the waste, and the inside catalyst that adds of device is basically in the direct addition solution, be unfavorable for the later stage to retrieve, pollute organic amine solution easily, and the device is the integral type basically, be not convenient for maintain internals.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problems that the organic amine solution is required to be continuously replaced after being saturated, the catalyst is not easily recycled in the solution directly, and the integrated device is not easy to disassemble, the methane decarburization and impurity removal device is provided.

In order to achieve the above object, the utility model provides a following technical scheme: the methane decarburization impurity removal device comprises a lower shell, wherein an air inlet is formed in the bottom end of the lower shell, an electric heating pipe is arranged on the outer side of the lower shell, an upper shell is arranged above the lower shell, a connecting threaded column is arranged on the outer side of the upper shell, a clamping groove is formed in the inner side of the connecting threaded column, threads are arranged on the inner side of the connecting threaded column, which is located at the bottom end of the clamping groove, an activated carbon layer is arranged inside the upper shell, a clamping ring is arranged on the outer side of the upper shell, a fixing column is arranged at the top end inside the lower shell, a catalyst adding basket is arranged at the bottom end of the fixing column, a plurality of groups of filter screens are arranged on the inner wall of the catalyst adding basket, a methane outlet is formed in the top end of the upper shell, a mixed gas outlet is formed in, the vacuum pump is arranged on one side of the lower shell, the vacuum pipe is arranged on one side of the vacuum pump, the vacuum pump is connected with one side of the lower shell through the vacuum pipe, and the organic amine solution is arranged inside the lower shell.

Preferably, the top outside of shell is provided with the screw thread with screw thread assorted down, connecting thread post passes through screw thread and lower shell fixed connection, connecting thread post passes through the draw-in groove and is connected with the snap ring rotation.

Preferably, the vacuum tube extends to the inside of the lower casing through one side of the lower casing, and the connection position of the vacuum tube and the lower casing is positioned above the organic amine solution.

Preferably, the outer side of the activated carbon layer is provided with a positioning ring, and the activated carbon layer is fixedly connected with the upper shell through the positioning ring.

Preferably, the fixing columns extend to the inside of the organic amine solution through the activated carbon layer, and the catalyst addition basket is located inside the organic amine solution.

Preferably, the top end of the air inlet is provided with a one-way valve.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses an electrothermal tube, vacuum pump, valve and the mist export of setting, the carbon dioxide in organic amine solution and the methane gas mixture takes place to absorb the reaction and carries out decarbonization purification methane, and the decarbonization solution that absorbs the dioxygen carbon becomes rich liquid, and the reaction sequence is:

for reversible reaction, the methane outlet is closed through a valve, the mixed gas outlet is opened, the rich liquid is heated through an electric heating tube, the air pressure in the device is reduced to low pressure by a vacuum pump, the rich liquid is subjected to reverse analytic reaction under the conditions of low pressure and high temperature, high-purity carbon dioxide gas is released and is discharged from the mixed gas outlet, and meanwhile, the rich liquid is regenerated, has the capacity of absorbing carbon dioxide again, does not need to be replaced by an organic amine solution, and effectively solves the problem that the organic amine solution needs to be replaced continuously after being saturated;

2. the solid catalyst is placed in the catalyst adding basket through the arranged catalyst adding basket and the fixed columns, the catalyst is fixed, the catalyst is prevented from being scattered in a solution and is not convenient to collect and replace, and the outer wall of the adding basket is provided with a plurality of groups of filter screens, so that a gas mixed solution can enter the adding basket, the catalysis process is facilitated, and the problem that the catalyst is not easy to recover when being directly added into the solution is effectively solved;

3. through the last shell, lower shell and the connecting thread post that set up, when needs overhauld the device, rotate the connecting thread post, make go up shell and shell separation down, can directly carry out the inspection maintenance to the spare part of device inside and change, reduced the takedown time, improved work efficiency, effectively solved the difficult problem of dismantling of integral type.

Drawings

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

FIG. 2 is a schematic structural view of a catalyst adding basket according to the present invention;

FIG. 3 is a schematic structural view of an activated carbon layer according to the present invention;

FIG. 4 is a schematic view of the structure of the threaded column with connection of the present invention;

fig. 5 is a partially enlarged schematic view of the present invention.

In the figure: 1. a lower housing; 2. an organic amine solution; 3. an air inlet; 4. a vacuum pump; 5. an electric heating tube; 6. fixing a column; 7. a catalyst addition basket; 8. a vacuum tube; 9. an activated carbon layer; 10. an upper housing; 11. a valve; 12. a mixed gas outlet; 13. a methane outlet; 14. connecting the threaded columns; 15. filtering with a screen; 16. a positioning ring; 17. a card slot; 18. a thread; 19. a snap ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The vacuum pump (model: XD-020) mentioned in the utility model can be obtained by market or private ordering.

Example 1

Referring to fig. 1-5, a methane decarburization and impurity removal device comprises a lower housing 1, an air inlet 3 is arranged at the bottom end of the lower housing 1, an electric heating tube 5 is arranged at the outer side of the lower housing 1, an upper housing 10 is arranged above the lower housing 1, a connecting threaded column 14 is arranged at the outer side of the upper housing 10, a clamping groove 17 is arranged at the inner side of the connecting threaded column 14, a thread 18 is arranged at the bottom end of the clamping groove 17 at the inner side of the connecting threaded column 14, an activated carbon layer 9 is arranged inside the upper housing 10, a clamping ring 19 is arranged at the outer side of the upper housing 10, a fixed column 6 is arranged at the top end inside the lower housing 1, a catalyst addition basket 7 is arranged at the bottom end of the fixed column 6, a plurality of sets of filter screens 15 are arranged on the inner wall of the catalyst addition basket 7, a methane outlet 13 is arranged at the top end of the upper housing 10, a, one side of lower shell 1 is provided with vacuum pump 4, and one side of vacuum pump 4 sets up and vacuum tube 8, and vacuum pump 4 passes through vacuum tube 8 to be connected with one side of lower shell 1, and the inside of lower shell 1 is provided with organic amine solution 2.

Example 2

Please refer to fig. 1 and 4, the outer side of the top end of the lower housing 1 is provided with a thread matching with the thread 18, the connecting threaded column 14 is fixedly connected with the lower housing 1 through the thread 18, and the connecting threaded column 14 is rotatably connected with the snap ring 19 through the snap groove 17, so that the upper housing 10 can be separated from the lower housing 1, and the maintenance of the components in the device is facilitated.

Please refer to fig. 1, the vacuum tube 8 penetrates one side of the lower housing 1 and extends to the inside of the lower housing 1, the connection point of the vacuum tube 8 and the lower housing 1 is located above the organic amine solution 2, the organic amine solution 2 does not enter the vacuum pump 4 through the vacuum tube 8, and the damage of the vacuum pump 4 is prevented.

Please refer to fig. 1, a positioning ring 16 is disposed outside the activated carbon layer 9, the activated carbon layer 9 is fixedly connected to the upper housing 10 through the positioning ring 16, and the positioning ring 16 can fix the activated carbon layer 9 in the device, so as to facilitate the absorption of hydrogen sulfide, sulfur dioxide, and other substances in the methane gas mixture.

Please refer to fig. 1 and fig. 3, the fixing column 6 penetrates the activated carbon layer 9 and extends to the inside of the organic amine solution 2, and the catalyst adding basket 7 is located inside the organic amine solution 2, so that the catalyst in the catalyst adding basket 7 can contact with the organic amine solution and the mixed gas together, thereby increasing the absorption rate of the organic amine solution to the carbon dioxide.

Referring to fig. 1, the top of the gas inlet 3 is provided with a check valve, which can prevent the organic amine solution from reaching the outside through the gas inlet 3, causing solution leakage and damaging other devices.

The working principle is as follows: firstly, the device is connected with an external power supply to enable the device to operate normally, firstly, a proper amount of catalyst is added into a catalyst adding basket 7, the device is closed through a connecting threaded column 14, a mixed gas outlet 12 is closed through a valve, a methane outlet 13 is opened, methane mixed gas is introduced into the device through an air inlet 3, a one-way valve arranged in the air inlet 3 can prevent a solution from flowing back into the air inlet 3, meanwhile, a vacuum pump 4 is started, the device is pressurized through a vacuum tube 8, organic amine solution absorbs carbon dioxide in the methane mixed gas under the conditions of pressurization and normal temperature, the catalyst accelerates the absorption rate of the carbon dioxide, the rest mixed gas continuously rises, most impurities in the mixed gas are absorbed through an activated carbon layer 9, the methane has small volume and cannot be absorbed by the activated carbon layer 9, the rest gas is pure methane and is discharged out of the device through the methane outlet 13, after filtering for a certain time, the organic amine solution is saturated to form a rich solution, at the moment, air intake is stopped, the methane outlet 13 is closed, the mixed gas outlet 12 is opened, the electric heating tube 5 is electrified to heat the organic amine solution, the vacuum pump 4 works reversely, the air pressure in the device is reduced through the vacuum tube 8, the rich solution is subjected to reverse analytic reaction under the conditions of low pressure and high temperature, pure carbon dioxide gas is released, the pure carbon dioxide gas is discharged out of the device through the mixed gas outlet 12, the rich solution is regenerated into the organic amine solution, the carbon dioxide gas can be absorbed again until the organic amine solution fails, the organic amine solution is replaced, after the device is saturated with the organic amine solution, the new solution does not need to be replaced, the solution can be repeatedly used for many times, the working efficiency is improved, the production cost is also saved, when the device runs for a period, the device needs to be checked and maintained, the upper shell 10 is separated from the lower shell 1, the interior of the device is opened, parts in the device are convenient to inspect, maintain and replace, the disassembly time is shortened, and the working efficiency is improved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. Methane decarbonization edulcoration device, including lower shell (1), its characterized in that: the bottom of the lower shell (1) is provided with an air inlet (3), the outer side of the lower shell (1) is provided with an electric heating tube (5), an upper shell (10) is arranged above the lower shell (1), the outer side of the upper shell (10) is provided with a connecting thread column (14), the inner side of the connecting thread column (14) is provided with a clamping groove (17), the inner side of the connecting thread column (14) is provided with a thread (18) at the bottom end of the clamping groove (17), an active carbon layer (9) is arranged inside the upper shell (10), the outer side of the upper shell (10) is provided with a clamping ring (19), the top end of the inner part of the lower shell (1) is provided with a fixing column (6), the bottom end of the fixing column (6) is provided with a catalyst adding basket (7), the inner wall of the catalyst adding basket (7) is provided with a plurality of groups of filter screens (15), and, the methane tank is characterized in that a mixed gas outlet (12) is formed in one side, located at a methane outlet (13), of the top end of the upper shell (10), valves (11) are arranged inside the mixed gas outlet (12) and the methane outlet (13), a vacuum pump (4) is arranged on one side of the lower shell (1), a vacuum pipe (8) is arranged on one side of the vacuum pump (4), the vacuum pump (4) is connected with one side of the lower shell (1) through the vacuum pipe (8), and an organic amine solution (2) is arranged inside the lower shell (1).

2. The methane decarburization and impurity removal device according to claim 1, which is characterized in that: the top outside of lower shell (1) is provided with the screw thread with screw thread (18) assorted, connecting thread post (14) pass through screw thread (18) and lower shell (1) fixed connection, connecting thread post (14) are connected with snap ring (19) rotation through draw-in groove (17).

3. The methane decarburization and impurity removal device according to claim 2, characterized in that: the vacuum tube (8) penetrates through one side of the lower shell (1) and extends into the lower shell (1), and the joint of the vacuum tube (8) and the lower shell (1) is positioned above the organic amine solution (2).

4. The methane decarburization and impurity removal device according to claim 2 or 3, characterized in that: the outer side of the activated carbon layer (9) is provided with a positioning ring (16), and the activated carbon layer (9) is fixedly connected with the upper shell (10) through the positioning ring (16).

5. The methane decarburization and impurity removal device according to claim 4, characterized in that: the fixing columns (6) penetrate through the activated carbon layer (9) and extend to the inside of the organic amine solution (2), and the catalyst adding basket (7) is located inside the organic amine solution (2).

6. The methane decarburization and impurity removal device according to claim 1, which is characterized in that: the top end of the air inlet (3) is provided with a one-way valve.