CN113230835A - Wet carbon trapping device - Google Patents
Wet carbon trapping device Download PDFInfo
- Publication number
- CN113230835A CN113230835A CN202110603438.9A CN202110603438A CN113230835A CN 113230835 A CN113230835 A CN 113230835A CN 202110603438 A CN202110603438 A CN 202110603438A CN 113230835 A CN113230835 A CN 113230835A
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- carbon dioxide
- communicated
- outlet
- absorption tower
- sodium carbonate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1425—Regeneration of liquid absorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1456—Removing acid components
- B01D53/1475—Removing carbon dioxide
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a wet carbon capture device, which comprises a carbon dioxide absorption tower, an analyzer, a pregnant solution pump, a sodium carbonate storage tank and a barren solution pump, wherein the carbon dioxide absorption tower is arranged on the front end of the carbon dioxide absorption tower; the outlet of the conversion gas input pipeline is communicated with the inlet of the distributor in the bottom of the carbon dioxide absorption tower, the outlet of the top of the carbon dioxide absorption tower is communicated with the crude hydrogen output pipeline, the slurry outlet of the bottom of the carbon dioxide absorption tower is communicated with the slurry inlet of the analyzer, the carbon dioxide outlet of the analyzer is communicated with the carbon dioxide output pipeline, the sodium carbonate solution outlet of the analyzer is communicated with the inlet of the sodium carbonate storage tank, the outlet of the sodium carbonate storage tank is communicated with the spraying layer inlet on the inner side of the top of the carbon dioxide absorption tower, the device can absorb and remove carbon dioxide in the conversion gas, and meanwhile, the device is low in cost and simple to operate.
Description
Technical Field
The invention belongs to the technical field of carbon capture, and relates to a wet-process carbon capture device.
Background
In the technical field of carbon capture, carbon dioxide in the shift gas is generally absorbed by an amine method, however, when the method is operated, the problem of absorbent decomposition loss often occurs, so that an absorbent needs to be continuously added into a system, and the treatment cost is increased.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a wet-method carbon capture device which can absorb and remove carbon dioxide in conversion gas, and has low cost and simple operation.
In order to achieve the aim, the wet carbon capture device comprises a carbon dioxide absorption tower, a resolver and a sodium carbonate storage tank;
the outlet of the transformed gas input pipeline is communicated with the inlet of a distributor in the bottom of the carbon dioxide absorption tower, the outlet of the top of the carbon dioxide absorption tower is communicated with the crude hydrogen output pipeline, the slurry outlet of the bottom of the carbon dioxide absorption tower is communicated with the slurry inlet of a resolver, the carbon dioxide outlet of the resolver is communicated with the carbon dioxide output pipeline, the sodium carbonate solution outlet of the resolver is communicated with the inlet of a sodium carbonate storage tank, and the outlet of the sodium carbonate storage tank is communicated with the spray layer inlet on the inner side of the top of the carbon dioxide absorption tower.
A packing layer is arranged in the carbon dioxide absorption tower, wherein the packing layer is positioned between the spraying layer and the distributor.
The device also comprises a sodium carbonate storage tank, and an outlet of the sodium carbonate storage tank is communicated with a sodium carbonate storage tank.
The low-pressure steam pipeline and the low-pressure steam condensate pipeline are also included; the low-pressure steam pipeline is communicated with a heat release side inlet of the resolver, and a heat release side outlet of the resolver is communicated with the low-pressure steam condensate pipeline.
The low-pressure steam pipeline is provided with a first valve.
And a second valve is arranged on the low-pressure steam condensate pipeline.
The outlet of the sodium carbonate storage tank is communicated with the inlet of the spraying layer in the carbon dioxide absorption tower through a barren liquor pump.
An outlet at the bottom of the carbon dioxide absorption tower is communicated with a slurry inlet of the resolver through a pregnant solution pump.
The invention has the following beneficial effects:
when the wet carbon capture device is specifically operated, the desulfurized conversion gas is sent into the carbon dioxide absorption tower to flow from bottom to top, and is fully contacted with the sodium carbonate solution sprayed from the spraying layer to react in the flowing process to generate the sodium bicarbonate solution so as to absorb the carbon dioxide in the conversion gas, then the sodium bicarbonate solution is sent into the analyzer to be heated and analyzed, and is directly analyzed into barren solution, and finally, the barren solution is recycled, so that various problems caused by secondary analysis are avoided, meanwhile, the loss of the absorbent can be avoided, the operation is simple, and the cost is low.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Wherein, 1 is a carbon dioxide absorption tower, 2 is a resolver, 3 is a pregnant solution pump, 4 is a sodium carbonate storage tank, and 5 is a barren solution pump.
Detailed Description
In order to make the technical solutions of the present invention better understood, 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, not all of the embodiments, and are not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. 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.
There is shown in the drawings a schematic block diagram of a disclosed embodiment in accordance with the invention. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
Referring to fig. 1, the wet carbon capture device according to the present invention includes a carbon dioxide absorption tower 1, a resolver 2, a rich solution pump 3, a sodium carbonate storage tank 4, and a barren solution pump 5;
an outlet of the shifted gas input pipeline is communicated with an inlet of a distributor in the bottom of the carbon dioxide absorption tower 1, an outlet in the top of the carbon dioxide absorption tower 1 is communicated with a crude hydrogen output pipeline, and an outlet in the bottom of the carbon dioxide absorption tower 1 is communicated with a slurry inlet of the analyzer 2 through a rich liquid pump 3;
a carbon dioxide outlet of the analyzer 2 is communicated with a carbon dioxide output pipeline, and a sodium carbonate solution outlet of the analyzer 2 is communicated with an inlet of a sodium carbonate storage tank 4;
an outlet of the sodium carbonate storage tank 4 is communicated with a spraying layer inlet in the top of the carbon dioxide absorption tower 1 through a barren liquor pump 5;
an outlet of the sodium carbonate storage tank is communicated with a sodium carbonate storage tank 4, a low-pressure steam pipeline is communicated with a heat release side inlet of the analyzer 2, and a heat release side outlet of the analyzer 2 is communicated with a low-pressure steam condensate pipeline;
the low-pressure steam pipeline is provided with a first valve, and the low-pressure steam condensate pipeline is provided with a second valve.
A packing layer is arranged in the carbon dioxide absorption tower 1, wherein the packing layer is positioned between the spraying layer and the distributor.
The working process of the invention is as follows:
the desulfurized shift gas contains carbon dioxide and hydrogen, the shift gas enters the carbon dioxide absorption tower 1 and flows from bottom to top through the distributor, simultaneously, the carbon dioxide in the converted gas fully contacts and reacts with the sodium carbonate solution sprayed from the spraying layer in the top of the carbon dioxide absorption tower 1 to generate sodium bicarbonate solution, the converted gas after absorption enters a crude hydrogen output pipeline through an outlet in the top of the carbon dioxide absorption tower 1, the slurry at the bottom of the carbon dioxide absorption tower 1 enters a resolver 2 through a pregnant solution pump 3, and is heated and decomposed into carbon dioxide, sodium carbonate and water through low-pressure steam, wherein, the decomposed carbon dioxide enters a carbon dioxide output pipeline through an outlet at the top of the analyzer 2, the decomposed sodium carbonate and water form a sodium carbonate solution, then enters a sodium carbonate storage tank 4 and is finally sent into a spraying layer in the top of the carbon dioxide absorption tower 1 through a barren liquor pump 5 for recycling.
The invention is characterized in that: the sodium carbonate absorbent reacts with carbon dioxide to generate sodium bicarbonate, and the sodium bicarbonate is heated and decomposed into carbon dioxide and sodium carbonate, so that the capture of the carbon dioxide and the regeneration circulation of the absorbent are realized, the problem of absorbent decomposition loss in the traditional amine absorption is avoided, the traditional two-stage absorption of semi-barren solution and barren solution is not needed, the flow is shortened, and the operation is simple.
Claims (8)
1. The wet carbon capture device is characterized by comprising a carbon dioxide absorption tower (1), a resolver (2) and a sodium carbonate storage tank (4);
the outlet of the conversion gas input pipeline is communicated with the inlet of a distributor in the bottom of the carbon dioxide absorption tower (1), the outlet of the top of the carbon dioxide absorption tower (1) is communicated with the crude hydrogen output pipeline, the slurry outlet of the bottom of the carbon dioxide absorption tower (1) is communicated with the slurry inlet of the analyzer (2), the carbon dioxide outlet of the analyzer (2) is communicated with the carbon dioxide output pipeline, the sodium carbonate solution outlet of the analyzer (2) is communicated with the inlet of a sodium carbonate storage tank (4), and the outlet of the sodium carbonate storage tank (4) is communicated with the spray layer inlet on the inner side of the top of the carbon dioxide absorption tower (1).
2. The wet carbon capture device according to claim 1, wherein a packing layer is arranged in the carbon dioxide absorption tower (1), wherein the packing layer is positioned between the spray layer and the distributor.
3. The wet carbon capture device according to claim 1, further comprising a sodium carbonate storage tank, an outlet of the sodium carbonate storage tank being in communication with the sodium carbonate storage tank (4).
4. The wet carbon capture device of claim 1, further comprising a low pressure steam line and a low pressure steam condensate line; the low-pressure steam pipeline is communicated with a heat release side inlet of the resolver (2), and a heat release side outlet of the resolver (2) is communicated with the low-pressure steam condensate pipeline.
5. The wet carbon capture device of claim 4, wherein the low pressure steam line is provided with a first valve.
6. The wet carbon capture device of claim 5 wherein the low pressure steam condensate line is provided with a second valve.
7. The wet carbon capture device according to claim 1, wherein the outlet of the sodium carbonate storage tank (4) is communicated with the spray level inlet in the carbon dioxide absorption tower (1) via a barren liquor pump (5).
8. The wet carbon capture device according to claim 1, wherein the outlet at the bottom of the carbon dioxide absorption tower (1) is communicated with the slurry inlet of the resolver (2) through a pregnant solution pump (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110603438.9A CN113230835A (en) | 2021-05-31 | 2021-05-31 | Wet carbon trapping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110603438.9A CN113230835A (en) | 2021-05-31 | 2021-05-31 | Wet carbon trapping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113230835A true CN113230835A (en) | 2021-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110603438.9A Pending CN113230835A (en) | 2021-05-31 | 2021-05-31 | Wet carbon trapping device |
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| CN (1) | CN113230835A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114159952A (en) * | 2021-09-29 | 2022-03-11 | 北京百利时能源技术股份有限公司 | Ammonia water method carbon trapping device |
| CN115463523A (en) * | 2022-11-02 | 2022-12-13 | 中国华能集团清洁能源技术研究院有限公司 | Absorption tower and carbon capture system |
-
2021
- 2021-05-31 CN CN202110603438.9A patent/CN113230835A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114159952A (en) * | 2021-09-29 | 2022-03-11 | 北京百利时能源技术股份有限公司 | Ammonia water method carbon trapping device |
| CN114159952B (en) * | 2021-09-29 | 2024-05-24 | 北京源碳环境股份有限公司 | Ammonia water method carbon trapping device |
| CN115463523A (en) * | 2022-11-02 | 2022-12-13 | 中国华能集团清洁能源技术研究院有限公司 | Absorption tower and carbon capture system |
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