CN219168072U - High-efficiency composite low-temperature methanol washing CO 2 Recovery tower - Google Patents
High-efficiency composite low-temperature methanol washing CO 2 Recovery tower Download PDFInfo
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- CN219168072U CN219168072U CN202222570027.7U CN202222570027U CN219168072U CN 219168072 U CN219168072 U CN 219168072U CN 202222570027 U CN202222570027 U CN 202222570027U CN 219168072 U CN219168072 U CN 219168072U
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Abstract
The utility model discloses a high-efficiency composite low-temperature methanol washing CO in the technical field of low-temperature methanol washing 2 The recovery tower comprises a device body; the conveying pipe penetrates through the device body, and the conveying pipe is communicated with a conveying box positioned in the device body; the bottom of the transmission box is uniformly provided with vertical spray heads, and the outer ring of the transmission box is uniformly provided with side spray heads facing the inner wall of the device body; the inner wall of the device body is provided with a guide cylinder which is positioned below the vertical spray head, and the guide cylinder is arranged to guide the conversion gas flowing from bottom to topThe lean methanol solution sprayed by the vertical spray head is contacted with the shift gas completely, thereby improving H pair 2 S and CO 2 Is not limited, and the absorption effect of (a) is improved.
Description
Technical Field
The utility model relates to the technical field of low-temperature methanol washing, in particular to a high-efficiency composite low-temperature methanol washing CO 2 And (5) a recovery tower.
Background
Low-temperature methanol washing and recycling CO 2 At present, the method is paid attention to in the industry, low-temperature methanol washing is performed, cold methanol is used as an absorption solvent, and the acid gas in the raw material gas is removed by utilizing the excellent characteristic of extremely high solubility of the methanol to the acid gas at low temperature.
Current low temperature methanol wash CO 2 The recovery tower firstly separates the water from the shift gas by cooling through a heat exchanger, and then removes all H under the condition of lean methanol washing and absorption 2 S and CO 2 Equal components, then absorbed H 2 S and CO 2 After the methanol rich liquid is decompressed, dissolved hydrogen and a small amount of CO are flashed out in a medium-pressure flash tower 2 The equal gas, the methanol-rich solution coming out from the lower part of the medium-pressure flash tower is sent into a stripping tower/a resolving tower of the dioxide tower, and most dissolved CO is flashed out 2 CO obtained from the top of the column 2 The product is sent to the synthesis section.
Wherein all H in the shift gas is removed by absorption by methanol lean wash 2 S and CO 2 When the components are equal, because the spray pipeline adopts a direct downward spray mode at present, the spray range of a spray head on the spray pipeline is limited, and some converted air at the edge is difficult to fully contact with the poor methanol solution, so that H is treated 2 S and CO 2 The absorption effect of (2) is poor, therefore, we propose a high-efficiency compound low-temperature methanol washing CO 2 And (5) a recovery tower.
Disclosure of Invention
The utility model aims to provide a high-efficiency composite low-temperature methanol-washed CO 2 Recovery tower to solve the problems set forth in the background art above.
In order to achieve the above purpose, the present utility model provides the following technical solutions: high-efficiency composite low-temperature methanol washing CO 2 The recovery tower comprises a device body; the conveying pipe penetrates through the device body, and the conveying pipe is communicated with a conveying box positioned in the device body; the bottom of the transmission box is uniformly provided with vertical spray heads, and the outer ring of the transmission box is uniformly provided with side spray heads facing the inner wall of the device body; the inner wall of the device body is provided with a guide cylinder which is positioned on the vertical spray headThe inner diameter of the guide cylinder gradually decreases from bottom to top.
As the efficient composite low-temperature methanol washing CO 2 A preferred embodiment of the recovery column, wherein: the top of guide cylinder is provided with blocks a section of thick bamboo, the outside top that blocks a section of thick bamboo is connected with the inner wall of device body, the internal diameter that blocks a section of thick bamboo increases gradually from the bottom up.
As the efficient composite low-temperature methanol washing CO 2 A preferred embodiment of the recovery column, wherein: the inner wall of the blocking cylinder is uniformly provided with convex blocks.
As the efficient composite low-temperature methanol washing CO 2 A preferred embodiment of the recovery column, wherein: the convex blocks are in a semicircular structure.
As the efficient composite low-temperature methanol washing CO 2 A preferred embodiment of the recovery column, wherein: the conveying pipe is externally connected with a lean methanol pump.
As the efficient composite low-temperature methanol washing CO 2 A preferred embodiment of the recovery column, wherein: the conveying pipe is provided with a fixing seat connected with the device body.
Compared with the prior art, the utility model has the beneficial effects that: through arranging the guide cylinder, the conversion gas flowing from bottom to top can be guided, and then the conversion gas is fully contacted by lean methanol solution sprayed by the vertical spray nozzle, so that the conversion gas is improved in H 2 S and CO 2 Is a natural absorption effect; after passing through the guide cylinder, the converted gas flows upwards and flows towards the edge under the blocking of the transmission box, and can be acted on again through the lean methanol solution sprayed out of the side spray head, thereby further improving the H ratio 2 S and CO 2 The absorption effect of the device is achieved by compounding the guide cylinder and the side spray head, and the lean methanol solution is enabled to be in contact with and ventilate for the second time, so that the absorption efficiency of the shift gas is greatly improved.
Drawings
FIG. 1 shows a high-efficiency composite low-temperature methanol washing CO according to the utility model 2 The overall structure of the recovery tower is schematically shown;
FIG. 2 shows a high-efficiency composite low-temperature methanol-washing CO according to the utility model 2 The partial structure of the recovery tower is schematically shown in cross section.
In the figure: 1. a device body; 2. a delivery tube; 3. a transfer box; 4. a vertical shower nozzle; 5. a side nozzle; 6. a guide cylinder; 7. a blocking cylinder; 8. a bump; 9. a fixing seat.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
Referring to fig. 1-2, a high efficiency composite low temperature methanol wash CO 2 The recovery tower comprises a device body 1, wherein the device body 1 is the same as the prior art;
a conveying pipe 2 for conveying the lean methanol solution is penetrated through the device body 1, and a transmission box 3 positioned in the device body 1 is communicated with the conveying pipe 2;
the bottom of the transmission box 3 is uniformly provided with vertical spray heads 4, and the outer ring of the transmission box 3 is uniformly provided with side spray heads 5 facing the inner wall of the device body 1;
the inner wall of the device body 1 is provided with a guide cylinder 6, the guide cylinder 6 is positioned below the vertical spray head 4, the inner diameter of the guide cylinder 6 gradually decreases from bottom to top, after the shift gas enters the device body 1, the shift gas flows in the guide cylinder 6 from bottom to top, and because the cross section area of the top of the guide cylinder 6 is small, the lean methanol solution sprayed by the vertical spray head 4 can fully contact the shift gas, thereby improving H in the shift gas 2 S and CO 2 After passing through the guide cylinder 6, the converted gas continues to flow upwards, flows to the edge close to the device body 1 under the blocking of the transmission box 3, and then the lean methanol solution sprayed out by the side spray nozzle 5 acts again, thereby further improving the H-phase ratio 2 S and CO 2 Thereby the absorption effect of the guide cylinder 6 and the side spray nozzle 5 are combined together for use, the absorption efficiency of the converted air is greatly improved, and the subsequent CO 2 The recovery step of (2) is the same as in the prior art.
The top of the guide cylinder 6 is provided with a blocking cylinder 7, the outer top of the blocking cylinder 7 is connected with the inner wall of the device body 1, the inner diameter of the blocking cylinder 7 is gradually increased from bottom to top, so that the conversion gas can flow to the edge, and the fallen solution can flow downwards through the guide cylinder 6 after being blocked by the blocking cylinder 7.
The conveying pipe 2 is externally connected with a lean methanol pump, lean methanol solution can be introduced into the conveying pipe 2, and a fixing seat 9 connected with the device body 1 is arranged on the conveying pipe 2 and used for fixing the conveying pipe 2.
Example 2
Referring to fig. 2, the inner wall of the blocking cylinder 7 is uniformly provided with projections 8, and the projections 8 are in a semicircular structure, so that the dropped solution can be dispersed into small droplets after striking on the projections 8, and the contact range is enlarged, so that H in the converted gas can be conveniently changed 2 S and CO 2 And (5) re-absorbing.
The rest of the structure is the same as in embodiment 1.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein 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 (6)
1. High-efficiency composite low-temperature methanol washing CO 2 Recovery tower, its characterized in that: comprising the steps of (a) a step of,
a device body (1);
a conveying pipe (2) penetrates through the device body (1), and a transmission box (3) positioned in the device body (1) is communicated with the conveying pipe (2);
the bottom of the transmission box (3) is uniformly provided with vertical spray heads (4), and the outer ring of the transmission box (3) is uniformly provided with side spray heads (5) facing the inner wall of the device body (1);
the inner wall of the device body (1) is provided with a guide cylinder (6), the guide cylinder (6) is positioned below the vertical spray head (4), and the inner diameter of the guide cylinder (6) is gradually reduced from bottom to top.
2. An efficient composite low temperature methanol wash CO as in claim 1 2 Recovery tower, its characterized in that: the top of guide cylinder (6) is provided with blocks a section of thick bamboo (7), the outside top that blocks section of thick bamboo (7) is connected with the inner wall of device body (1), the internal diameter that blocks section of thick bamboo (7) increases gradually from the bottom up.
3. An efficient composite low temperature methanol wash CO as in claim 2 2 Recovery tower, its characterized in that: the inner wall of the blocking cylinder (7) is uniformly provided with convex blocks (8).
4. A high efficiency composite low temperature methanol wash CO according to claim 3 2 Recovery tower, its characterized in that: the protruding blocks (8) are of semicircular structures.
5. An efficient composite low temperature methanol wash CO as in claim 1 2 Recovery tower, its characterized in that: the conveying pipe (2) is externally connected with a lean methanol pump.
6. An efficient composite low temperature methanol wash CO as in claim 1 2 Recovery tower, its characterized in that: the conveying pipe (2) is provided with a fixing seat (9) connected with the device body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222570027.7U CN219168072U (en) | 2022-09-27 | 2022-09-27 | High-efficiency composite low-temperature methanol washing CO 2 Recovery tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222570027.7U CN219168072U (en) | 2022-09-27 | 2022-09-27 | High-efficiency composite low-temperature methanol washing CO 2 Recovery tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219168072U true CN219168072U (en) | 2023-06-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222570027.7U Active CN219168072U (en) | 2022-09-27 | 2022-09-27 | High-efficiency composite low-temperature methanol washing CO 2 Recovery tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219168072U (en) |
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- 2022-09-27 CN CN202222570027.7U patent/CN219168072U/en active Active
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