CN216799295U - Trapping device of post-combustion CO2 - Google Patents
Trapping device of post-combustion CO2 Download PDFInfo
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- CN216799295U CN216799295U CN202122404559.9U CN202122404559U CN216799295U CN 216799295 U CN216799295 U CN 216799295U CN 202122404559 U CN202122404559 U CN 202122404559U CN 216799295 U CN216799295 U CN 216799295U
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Abstract
The utility model discloses a post-combustion CO2The trapping device of (1). The device comprises a first absorption tower, wherein the bottom of the first absorption tower is connected with a flue gas pretreatment system for sulfur removal and dust removal, and the first absorption tower and a second absorption tower form gas-liquid circulation; and a water washing module is arranged at the top of the second absorption tower, water supplement and MEA supplement exist in the device to ensure the liquid circulation in the whole device, and an air compressor is arranged at the top of the stripping tower. The device will burn the CO2The trapping device absorbs CO at high pressure and low temperature through MEA solvent2Low pressure high temperature CO desorption2Mechanism (C) of (C) CO2Separated from the flue gas, solves the problem that the emission of coal-fired power plants contains a large amount of CO2The smoke pollutes the environment, and the MEA solution of the prior trapping device is excessively consumed and the trapping efficiency is low.
Description
Technical Field
The utility model relates to the field of energy chemical industry, belongs to the technical field of carbon capture, and particularly relates to post-combustion CO2The trapping device of (1).
Background
Since the industrial revolution, atmospheric CO2The annual increase of the content leads to the enhancement of the greenhouse effect, and then a system of global average temperature rise, polar sea ice melting, sea level rise and the like is triggeredIn the case of frequent climatic problems, the human living environment faces serious challenges and threats. CO22Emissions are a major source of greenhouse gases, and reducing them is an effective means to cope with climate change and global warming, and therefore CO2Capture and utilization techniques are receiving increasing attention. CO22Mainly from the combustion of fossil fuels, and in particular coal-fired power plants are recognized as emitting large amounts of CO2Gases, sources that exacerbate the greenhouse effect, capture and recovery of CO2Is a key measure for effective emission reduction.
CO of practical significance2The capture technology becomes the focus of global environmental engineering in recent years, is a great breakthrough for the interactive combination of the existing environmental protection, energy technology and process control, has great influence on reducing greenhouse gas emission, improving energy efficiency and purifying environment, and has great influence on CO2The control study of the trapping system was thus developed.
Among the various carbon dioxide capture processes today, post combustion carbon dioxide capture (PCC) based on ethanolamine solvent (MEA) chemical absorption is considered the most mature, viable and promising process because it is less costly and can be easily retrofitted to existing power plants. Specific post-combustion C02The capture device is shown in FIG. 1, and the chemical equilibrium reactions involved in the device are shown in formulas (1) to (7):
2H2O H3O++OH- (1)
MEA+H3O+ MEAH++H2O (2)
CO2+2H2O H3O++HCO3 - (3)
HCO3 -+H2O H3O++CO3 2- (4)
MEA+HCO3 - MEACOO-+H2O (5)
the kinetic reversible reactions involved can be expressed as:
CO2+OH- HCO3 - (6)
MEA+CO2+H2O MEACOO-+H3O+ (7)
disclosure of Invention
The utility model aims to provide CO after combustion2The trapping device of (1). The device can fully capture CO in the flue gas2And the method also has the aims of reducing the consumption of MEA solvent in the trapping process and reducing the trapping cost.
To achieve the above object, the present invention provides a post-combustion CO2The trapping device comprises a first absorption tower, wherein the first absorption tower is respectively connected with a flue gas pretreatment system, a second absorption tower and a lean-rich liquid heat exchanger; the top of the second absorption tower is provided with a flue gas water washing tank, and the second absorption tower is sequentially connected with a lean-rich liquid heat exchanger, a stripping tower and a second condenser through a first cooler;
the flue gas pretreatment system comprises a flue gas cooling tank, and the flue gas cooling tank is connected with a flue gas pipe from a coal-fired power plant through a flue gas booster pump;
the second condenser is sequentially connected with a gas compressor and compressed pure CO2An exhaust duct;
the stripping tower is connected with a reboiler, and the reboiler is respectively connected with a hot steam exhaust pipe and a hot steam input pipe.
The bottom of the flue gas cooling tank is connected with a NaOH circulating regeneration solution pipe; the middle upper part of the flue gas cooling tank is connected with a NaOH solution pipe; a desulfurized flue gas pipe is arranged at the top of the flue gas cooling tank; the middle lower part of the flue gas cooling tank is respectively connected with mixed flue gas of a coal-fired power plant, a flue gas cooling water inlet pipe and a flue gas cooling water outlet pipe;
the NaOH solution pipe and the NaOH circulation regeneration solution pipe are connected with a first mixer, and the first mixer is connected with a NaOH solution supplementing pipe.
The middle lower part of the first absorption tower is connected with a desulfurized flue gas pipe; the top of the first absorption tower is connected with low CO2A flue gas pipe; the bottom of the first absorption tower is connected with a cold rich liquid pipe; the middle upper part of the first absorption is connected with a first cold lean liquid pipe.
The top of the second absorption tower is connected with a flue gas pipe containing a small amount of MEA after treatment; the middle upper part of the second absorption tower is respectively connected with a regenerated MEA solution pipe and a second cold lean liquid pipe; the middle lower part of the second absorption tower is connected with low CO2A flue gas pipe; the bottom of the second absorption tower is connected with a first cold lean liquid pipe.
And the lean-rich liquid heat exchanger is respectively connected with a fourth cold lean liquid pipe, a rich liquid input pipe, a hot rich liquid pipe and a first hot lean liquid pipe.
The top of the stripping tower is connected with CO containing water vapor2A gas pipe; the middle upper part of the stripping tower is connected with a hot rich liquid pipe and a condensed water circulating pipe; the middle lower part of the stripping tower is connected with a fourth hot lean liquid pipe; the bottom of the stripping tower is connected with a third hot lean liquid pipe; stripping tower passing CO containing water vapor2The gas pipe and the condensed water circulating pipe are connected with a second condenser; the second condenser is respectively connected with a second cooling water outlet pipe and a second cooling water inlet pipe; the top of the second condenser is sequentially connected with pure CO2Gas pipe, gas compressor, compressed pure CO2An exhaust duct 31; the stripping tower is connected with a reboiler through a third hot lean liquid pipe and a fourth hot lean liquid pipe; a second hot lean liquid pipe is connected to the reboiler.
A first cooler and a second mixer are sequentially arranged between the second cold lean solution and the fourth cold lean solution pipe; the first cooler is connected with the second mixer through a mixing pipe; and the second mixer is respectively connected with a water replenishing pipe and an MEA solution replenishing pipe.
And a rich liquid booster pump is arranged between the cold rich liquid pipe and the rich liquid input pipe.
The flue gas water washing tank is respectively connected with a washed regenerated MEA solution pipe, a flue gas pipe containing a small amount of MEA after treatment, a washing water pipe and a flue gas pipe after treatment.
A first valve is arranged on the desulfurized flue gas pipe; a second valve is arranged on the flue gas pipe after the treatment, a third valve is arranged on the water replenishing pipe, a fourth valve is arranged on the MEA solution replenishing pipe, and the compressed pure CO2A fifth valve is arranged on the pipe, a sixth valve is arranged on the second cooling water inlet pipe,A seventh valve is arranged on the condensed water circulating pipe, and an eighth valve is arranged on the hot steam input pipe.
The utility model provides a post-combustion CO2The trapping device has the advantages that: the device enables the flue gas from a coal-fired power plant to enter a flue gas cooling tank through pressurization of a flue gas booster pump through a flue gas pretreatment system arranged at the bottom of a first absorption tower, NaOH solution formed by circulating regeneration of NaOH solution at the bottom of the flue gas cooling tank and supplement of the NaOH solution is fed into the flue gas cooling tank through a mixer to be subjected to desulphurization treatment, and cooling water at the bottom flows in and out to remove particle dust impurities, so that the flue gas is subjected to pretreatment, dust removal and ash removal; the gas after the flue gas pretreatment enters a first absorption tower, passes through the first absorption tower and a second absorption tower and is respectively composed of flue gas, cold barren solution and low CO2The flue gas and the cold barren solution are in reverse full contact at high pressure and low temperature to generate carbon absorption chemical reaction, so that full implementation of the carbon absorption reaction is ensured, and the absorption efficiency is improved; through the flue gas water washing tank arranged at the top of the second absorption tower, because of the volatility of the MEA solution, the treated flue gas containing a small amount of MEA flows into the water washing tank, and flows into the water washing tank from the upper part of the water washing tank, and the flue gas is reversely in full contact with the flue gas to absorb the volatilized MEA to form a washed regenerated MEA solution and flows into the second absorption tower 1, so that the consumption of the MEA is reduced, the cost is saved, and the treated flue gas can directly flow into the air from the top without polluting the environment; cold rich liquid flows out from the bottom of the first absorption tower, flows into the lean-rich liquid heat exchanger through the rich liquid booster pump, exchanges heat with hot lean liquid from a reboiler in the lean-rich liquid heat exchanger, and the exchanged cold lean liquid, water supplement and MEA supplement pass through a mixer and a cooler, so that cold lean liquid with proper temperature is formed, a second absorption tower carries out carbon absorption reaction, and the proper hot rich liquid enters a stripping tower for carbon desorption reaction; on the other hand, the hot rich liquid in the stripping tower and the hot water vapor from the reboiler at the bottom react chemically to produce pure CO containing water vapor at high temperature and low pressure2The gas enters a condenser, and condensed water circulates to enter a stripping tower, so that the water circulation is ensured, and pure CO is obtained2Gas (es)Enters a compressor to obtain compressed pure CO2Thereby being capable of being transported, stored and utilized.
Drawings
FIG. 1 shows a post-combustion CO proposed by the present invention2The structural schematic diagram of the trapping device;
in the figure: 101: a first absorption tower; 102: a second absorption tower; 103: a stripping column; 2: NaOH solution replenishment tube, 201: a flue gas cooling tank; 202: a water washing tank; 203: a first cooler; 204: a lean-rich liquor heat exchanger; 205: a second condenser; 206: a gas compressor; 207: a reboiler; 301: a rich liquor booster pump; 302: a barren liquor booster pump; 303: a flue gas booster pump; 401: first mixer, 402: a second mixer; 501 a first valve, 502 a second valve, 503 a third valve, 504 a fourth valve, 505 a fifth valve, 506 a sixth valve, 507 a seventh valve, 508 an eighth valve;
1-flue gas pipe, 2-NaOH solution replenishing pipe, 3-NaOH cyclic regeneration solution pipe, 4-NaOH solution pipe, 5-mixed flue gas of a coal-fired power plant, 6-desulfurized flue gas pipe, 7-flue gas cooling water inlet pipe, 8-flue gas cooling water outlet pipe and 9-low CO2Flue gas pipe, 10-cold rich liquid pipe, 11-first cold lean liquid pipe, 12-regenerated MEA solution pipe, 13-flue gas pipe containing a small amount of MEA, 14-washing water pipe, 15-treated flue gas pipe, 16-second cold lean liquid pipe, 17-mixing pipe, 18-water supplement pipe, 19-MEA solution supplement pipe, 20-fourth cold lean liquid pipe, 21-hot rich liquid pipe, 22-rich liquid input pipe, 23-first hot lean liquid pipe, 24-second hot lean liquid pipe, 25-third hot lean liquid pipe, 26-fourth hot lean liquid pipe, 27-hot steam exhaust pipe, 28-hot steam input pipe, 29-CO containing water vapor2Gas pipe, 30-pure CO2Gas pipe, 31-pure CO2An exhaust pipeline, 32-a second cooling water outlet pipe, 33-a second cooling water inlet pipe and 34-a condensed water circulating pipe.
Detailed Description
Example 1
The utility model relates to a post-combustion CO2The capture device comprises a first absorption tower 101, wherein the first absorption tower 101 is respectively connected with a flue gas pretreatment system, a second absorption tower 102 and a lean-rich liquid heat exchanger204 connection; a flue gas water washing tank 202 is arranged at the top of the second absorption tower 102, and the second absorption tower 102 is sequentially connected with a lean-rich liquid heat exchanger 204, a stripping tower 103 and a second condenser 205 through a first cooler 203;
the flue gas pretreatment system comprises a flue gas cooling tank 201, and the flue gas cooling tank 201 is connected with a flue gas 1 pipe from a coal-fired power plant through a flue gas booster pump 303;
the second condenser 205 is connected with a gas compressor 206 and compressed pure CO in sequence2An exhaust duct 31;
the stripping tower 103 is connected with a reboiler 207, and the reboiler 207 is respectively connected with a hot steam exhaust pipe 27 and a hot steam input pipe 28.
The bottom of the flue gas cooling tank 201 is connected with a NaOH circulating regeneration solution 3 pipe; the middle upper part of the flue gas cooling tank 201 is connected with a NaOH solution 4 pipe; the top of the flue gas cooling tank 201 is provided with a desulfurized flue gas 6 pipe; the middle lower part of the flue gas cooling tank 201 is respectively connected with mixed flue gas 5 of a coal-fired power plant, a flue gas cooling water inlet pipe 7 and a flue gas cooling water outlet pipe 8;
the 4 pipes of the NaOH solution and the 3 pipes of the NaOH circulation regeneration solution are connected with a first mixer 401, and the first mixer 401 is connected with a 2 pipe of the NaOH solution supplement.
The middle lower part of the first absorption tower 101 is connected with a desulfurized flue gas 6 pipe; the top of the first absorption tower 101 is connected with low CO 29 pipes of flue gas; the bottom of the first absorption tower 101 is connected with a cold rich liquid 10 pipe; the first cold lean liquid 11 pipe is connected to the middle-upper part of the first absorption tower 101.
The top of the second absorption tower 102 is connected with a flue gas 13 pipe containing a small amount of MEA after treatment; the middle upper part of the second absorption tower 102 is respectively connected with a regenerated MEA solution 12 pipe and a second cold lean solution 16 pipe; the middle lower part of the second absorption tower 102 is connected with low CO 29 pipes of flue gas; the bottom of the second absorption tower 102 is connected to a first cold lean liquid 11 pipe.
The lean-rich liquid heat exchanger 204 is connected to the fourth cold lean liquid 20 pipe, the rich liquid input 22 pipe, the hot rich liquid 21 pipe, and the first hot lean liquid 23 pipe, respectively.
The top of the stripping tower 103 is connected with CO containing water vapor2A gas 29 tube; stripping tower 1The middle upper part of 03 is connected with a hot rich liquid 21 pipe and a condensed water circulating 34 pipe; the middle lower part of the stripping tower 103 is connected with a fourth hot barren liquor 26 pipe; the bottom of the stripping tower 103 is connected with a third hot barren liquor 25 pipe; stripping column 103 CO with steam2The gas 29 pipe and the condensed water circulating 34 pipe are connected with a second condenser 205; the second condenser 205 is connected with a second cooling water outlet 32 pipe and a second cooling water inlet 33 pipe respectively; the top of the second condenser 205 is connected with pure CO in sequence2Gas 30 pipe, gas compressor 206, compressed pure CO2An exhaust duct 31; the stripping tower 103 is connected with a reboiler 207 through a third hot barren liquor 25 pipe and a fourth hot barren liquor 26 pipe; the reboiler 207 is also connected to a second hot lean solution 24 line.
A first cooler 203 and a second mixer 402 are sequentially arranged between the second cold lean liquid 16 and the fourth cold lean liquid 20; the first cooler 203 is connected with the second mixer 402 through a mixing pipe 17; a water supplement 18 pipe and an MEA solution supplement 19 pipe are connected to the second mixer 402, respectively.
And a rich liquid booster pump 301 is arranged between the cold rich liquid 10 pipe and the rich liquid input 22 pipe.
The flue gas water washing tank 202 is respectively connected with a washed regenerated MEA solution 12 pipe, a treated flue gas 13 pipe containing a small amount of MEA, a washing water 14 pipe and a treated flue gas 15 pipe.
A first valve 501 is arranged on the desulfurized flue gas 6 pipe; a second valve 502 is arranged on a treated flue gas 15 pipe, a third valve 503 is arranged on a water supplementing 18 pipe, a fourth valve 504 and pure CO are arranged on an MEA solution supplementing 19 pipe2A fifth valve 505 is arranged on the exhaust pipeline 31, a sixth valve 506 is arranged on the second cooling water inlet 33 pipe, a seventh valve 507 is arranged on the condensed water circulating pipe 34, and an eighth valve 508 is arranged on the hot steam input pipe 28.
During the use, flue gas pretreatment systems is equipped with to first absorption tower 101 bottom: flue gas 1 from a coal-fired power plant enters a flue gas cooling tank 201 through pressurization of a flue gas booster pump 303, NaOH solution 4 consisting of NaOH solution circulation regeneration 3 and NaOH solution supplement 2 at the bottom of the flue gas cooling tank 201 enters the flue gas cooling tank 201 through a mixer 401Carrying out sulfur removal treatment, wherein the bottom of the sulfur removal treatment tower is provided with a cooling water inflow 7 and a cooling water outflow 8 for removing particle dust impurities, and gas 6 pretreated by flue gas enters a first absorption tower 101; in the first absorption tower 101 and the second absorption tower 102, low CO is respectively generated by the flue gas 7 and the cold barren liquor 112The flue gas 9 and the cold barren solution 16 are reversely and fully contacted under high pressure and low temperature to generate carbon absorption chemical reaction, a flue gas water washing tank 202 is arranged at the top of the second absorption tower 102, because of the volatility of the MEA solution, the treated flue gas 13 containing a small amount of MEA flows into the water washing tank 202, the washing water 14 flows in from the upper part, the flue gas 13 reversely and fully contacts to absorb the volatilized MEA to form washed regenerated MEA solution 12, and the treated flue gas 15 directly flows into the air from the top; the cold rich liquid 10 flows out of the bottom of the first absorption tower 101, flows into a lean-rich liquid heat exchanger 204 through a rich liquid booster pump 10, exchanges heat with the hot lean liquid 24 from a reboiler 207 in the lean-rich liquid heat exchanger 204 through the lean liquid booster pump 10, and forms a cold lean liquid 16 with a proper temperature through a mixer 402 and a cooler 203 with a water supplement 18 and an MEA supplement 19 to enter the second absorption tower 102 from the top; on the other hand, the hot rich liquid 21 enters the stripping tower 103, and in the stripping tower 103, the hot rich liquid 21 and the hot water steam 26 from the reboiler 207 at the bottom undergo a carbon desorption chemical reaction at high temperature and low pressure to generate pure CO containing water vapor2Passing gas through CO containing water vapour2The gas pipe 29 enters the condenser 205 and then enters the stripping tower 103 through the condensed water circulating pipe 34, and pure CO is obtained2The gas pipe 30 enters the compressor 206 to obtain compressed pure CO2And carrying out transportation, storage and utilization.
Claims (10)
1. Post combustion CO2The capture device of (2) comprises a first absorption tower (101), and is characterized in that: the first absorption tower (101) is respectively connected with the flue gas pretreatment system, the second absorption tower (102) and the lean-rich liquid heat exchanger (204); the top of the second absorption tower (102) is provided with a flue gas water washing tank (202), and the second absorption tower (102) is sequentially connected with a lean-rich liquid heat exchanger (204), a stripping tower (103) and a second condenser (205) through a first cooler (203);
the flue gas pretreatment system comprises a flue gas cooling tank (201), wherein the flue gas cooling tank (201) is connected with a flue gas pipe (1) from a coal-fired power plant through a flue gas booster pump (303);
the second condenser (205) is sequentially connected with a gas compressor (206) and the compressed pure CO2An exhaust duct (31);
the stripping tower (103) is connected with a reboiler (207), and the reboiler (207) is respectively connected with a hot steam exhaust pipe (27) and a hot steam input pipe (28).
2. Post combustion CO according to claim 12The collecting device of (1), characterized in that: the bottom of the flue gas cooling tank (201) is connected with a NaOH circulating regeneration solution pipe (3); the middle upper part of the flue gas cooling tank (201) is connected with a NaOH solution pipe (4); a desulfurized flue gas pipe (6) is arranged at the top of the flue gas cooling tank (201); the middle lower part of the flue gas cooling tank (201) is respectively connected with mixed flue gas (5) of a coal-fired power plant, a flue gas cooling water inlet pipe (7) and a flue gas cooling water outlet pipe (8);
the NaOH solution pipe (4) and the NaOH circulation regeneration solution pipe (3) are connected with a first mixer (401), and the first mixer (401) is connected with a NaOH solution supplementing pipe (2).
3. Post combustion CO according to claim 22The collecting device of (1), characterized in that: the middle lower part of the first absorption tower (101) is connected with a desulfurized flue gas pipe (6); the top of the first absorption tower (101) is connected with low CO2A flue gas pipe (9); the bottom of the first absorption tower (101) is connected with a cold rich liquid pipe (10); the middle upper part of the first absorption tower (101) is connected with a first cold lean liquid pipe (11).
4. Post combustion CO as claimed in claim 32The collecting device of (1), characterized in that: the top of the second absorption tower (102) is connected with a flue gas pipe (13) which contains a small amount of MEA after treatment; the middle upper part of the second absorption tower (102) is respectively connected with a regenerated MEA solution pipe (12) and a second cold lean liquid pipe (16); the middle lower part of the second absorption tower (102) is connected with low CO2A flue gas pipe (9); the bottom of the second absorption tower (102) is connected with a first cold lean liquid pipe (11).
5. A post combustion CO2 capture device according to claim 4, wherein: the lean-rich liquid heat exchanger (204) is respectively connected with a fourth cold lean liquid pipe (20), a rich liquid input pipe (22), a hot rich liquid pipe (21) and a first hot lean liquid pipe (23).
6. A post combustion CO2 capture device according to claim 5, wherein: the top of the stripping tower (103) is connected with CO containing water vapor2A gas pipe (29); the middle upper part of the stripping tower (103) is connected with a hot rich liquid pipe (21) and a condensed water circulating pipe (34); the middle lower part of the stripping tower (103) is connected with a fourth hot lean liquid pipe (26); the bottom of the stripping tower (103) is connected with a third hot lean liquid pipe (25); stripping column (103) passes CO containing water vapor2The gas pipe (29) and the condensed water circulating pipe (34) are connected with the second condenser (205); the second condenser (205) is respectively connected with a second cooling water outlet pipe (32) and a second cooling water inlet pipe (33); the top of the second condenser (205) is connected with pure CO in sequence2A gas pipe (30), a gas compressor (206), compressed pure CO2An exhaust duct (31); the stripping tower (103) is connected with a reboiler (207) through a third hot lean liquid pipe (25) and a fourth hot lean liquid pipe (26); the reboiler (207) is also connected with a second hot lean liquid pipe (24).
7. A post combustion CO as claimed in claim 62The collecting device of (1), characterized in that: a first cooler (203) and a second mixer (402) are sequentially arranged between the second cold lean liquid pipe (16) and the fourth cold lean liquid pipe (20); the first cooler (203) is connected with the second mixer (402) through a mixing pipe (17); the second mixer (402) is connected with a water replenishing pipe (18) and an MEA solution replenishing pipe (19) respectively.
8. Post combustion CO as claimed in claim 72The collecting device of (1), characterized in that: and a rich liquid booster pump (301) is arranged between the cold rich liquid pipe (10) and the rich liquid input pipe (22).
9. As in claimA post combustion CO as set forth in claim 82The collecting device of (1), characterized in that: the flue gas water washing tank (202) is respectively connected with a washed regenerated MEA solution pipe (12), a flue gas pipe (13) containing a small amount of MEA after treatment, a washing water pipe (14) and a flue gas pipe (15) after treatment.
10. A post combustion CO as claimed in claim 92The collecting device of (1), characterized in that: a first valve (501) is arranged on the desulfurized flue gas pipe (6); a second valve (502) is arranged on the flue gas pipe (15) after the treatment is finished, a third valve (503) is arranged on the water replenishing pipe (18), a fourth valve (504) is arranged on the MEA solution replenishing pipe (19), and the compressed pure CO is2A fifth valve (505) is arranged on the exhaust pipeline (31), a sixth valve (506) is arranged on the second cooling water inlet pipe (33), a seventh valve (507) is arranged on the condensed water circulating pipe (34), and an eighth valve (508) is arranged on the hot steam input pipe (28).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115337756A (en) * | 2022-08-17 | 2022-11-15 | 清华大学 | Absorption device, carbon dioxide capture system, and carbon dioxide capture method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115337756A (en) * | 2022-08-17 | 2022-11-15 | 清华大学 | Absorption device, carbon dioxide capture system, and carbon dioxide capture method |
| CN115337756B (en) * | 2022-08-17 | 2024-02-09 | 清华大学 | Absorption device, carbon dioxide capturing system, and carbon dioxide capturing method |
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