CN114028903A - System for catching carbon dioxide in flue gas - Google Patents
System for catching carbon dioxide in flue gas Download PDFInfo
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- CN114028903A CN114028903A CN202111234921.0A CN202111234921A CN114028903A CN 114028903 A CN114028903 A CN 114028903A CN 202111234921 A CN202111234921 A CN 202111234921A CN 114028903 A CN114028903 A CN 114028903A
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 130
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 110
- 239000003546 flue gas Substances 0.000 title claims abstract description 110
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 65
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 65
- 239000003463 adsorbent Substances 0.000 claims abstract description 149
- 239000007789 gas Substances 0.000 claims abstract description 87
- 238000001179 sorption measurement Methods 0.000 claims abstract description 66
- 230000008929 regeneration Effects 0.000 claims abstract description 47
- 238000011069 regeneration method Methods 0.000 claims abstract description 47
- 239000000498 cooling water Substances 0.000 claims description 86
- 238000006243 chemical reaction Methods 0.000 claims description 58
- 238000001816 cooling Methods 0.000 claims description 28
- 239000000428 dust Substances 0.000 claims description 24
- 238000004891 communication Methods 0.000 claims description 13
- 239000012716 precipitator Substances 0.000 claims description 5
- 239000002594 sorbent Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 28
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
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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
- B01D53/02—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 adsorption, e.g. preparative gas chromatography
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/62—Carbon oxides
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/96—Regeneration, reactivation or recycling of reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
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Abstract
The application discloses a system for capturing carbon dioxide in flue gas, in the disclosed system, a flue gas fan is communicated with an adsorption device, a first-state adsorbent is arranged in the adsorption device, the first-state adsorbent is used for reacting with the first-state flue gas, the adsorption device is communicated with a first inlet of a first separator, a discharge device is communicated with a first gas discharge port of the first separator, and a regeneration device is communicated with the first adsorbent discharge port of the first separator; the first circulating fan is communicated with the adsorption device, the first central air of the first circulating fan can convey the second-state adsorbent and the second-state flue gas to the first inlet, and the regeneration device is communicated with the adsorption device. The technical scheme can solve the problem that the material circulation rate of the system for capturing the carbon dioxide in the flue gas in the background technology is low.
Description
Technical Field
The application belongs to the design field of environmental protection equipment, and particularly relates to a system for collecting carbon dioxide in flue gas.
Background
With the rapid development of economy and industry, fossil energy is consumed in large quantities, which makes the emission of carbon dioxide huge. The excessive discharge of carbon dioxide can cause problems of greenhouse effect, increase of dissolved acid in seawater and the like, which have great influence on the ecological environment.
Carbon capture, utilization and sealing are important means for reducing carbon emission and constructing ecological civilization in China in the future, but the problem of low material circulation rate of a capture system for capturing and sealing carbon dioxide in flue gas exists, so that the application and popularization of the carbon capture technology are restricted.
Disclosure of Invention
The embodiment of the application aims to disclose a system for capturing carbon dioxide in flue gas, which can solve the problem that the system for capturing carbon dioxide in flue gas in the background art is low in material circulation rate.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application discloses a system for capturing carbon dioxide in flue gas, the disclosed system includes an adsorption device, a flue gas fan, a first circulation fan, an exhaust device, a regeneration device, and a first separator, wherein:
the flue gas fan is communicated with the adsorption device and is used for conveying the flue gas in a first state into the adsorption device, a first-state adsorbent is arranged in the adsorption device and is used for reacting with the flue gas in the first state to obtain a second-state adsorbent and a second-state flue gas,
the adsorbent means being in communication with the first inlet of the first separator, the exhaust means being in communication with the first gas exhaust of the first separator, and the regeneration means being in communication with the first adsorbent exhaust of the first separator;
the first circulating fan is communicated with the adsorption device, the first central air of the first circulating fan can convey the second-state adsorbent and the second-state flue gas to the first inlet, the regeneration device is communicated with the adsorption device, and the regeneration device is used for converting the second-state adsorbent into the first-state adsorbent.
The technical scheme adopted by the application can achieve the following beneficial effects:
the system of carbon dioxide in entrapment flue gas that this application embodiment discloses is through improving the structure of the system among the correlation technique, sets up first state adsorbent in adsorption equipment to carry to adsorption equipment in through the first state flue gas of flue gas fan, make first state adsorbent and first state flue gas can react and obtain second state flue gas and second state adsorbent in adsorption equipment, and the mixture of second state flue gas and second state adsorbent can be transported to first separator under the effect of first central wind of first circulating fan.
Under the condition that the mixture of the second-state flue gas and the second-state adsorbent enters the first separator, the first separator can separate the mixture of the second-state flue gas and the second-state adsorbent, separate the second-state adsorbent into the regeneration device, separate the second-state flue gas into the exhaust device, further enable the second-state adsorbent to be converted into the first-state adsorbent in the regeneration device, finally enable the first-state adsorbent to be transported into the adsorption device, enable the adsorbent to be converted among different states in the system, and enable the first-state adsorbent capable of reacting with carbon dioxide to return to the adsorption device in the state of the first-state adsorbent after being converted in different states so as to realize the cyclic utilization of the first-state adsorbent in the system. The technical scheme adopted by the embodiment of the application can solve the problem that the material circulation rate of the system for capturing the carbon dioxide in the flue gas is low in the background technology.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a system for capturing carbon dioxide in flue gas, which is disclosed in the embodiment of the application.
Description of reference numerals:
100-an adsorption device, 110-a first reaction section, 120-a second reaction section and 130-a first material returning device;
200-a flue gas fan;
310-a first circulating fan, 320-a second circulating fan, 330-a third circulating fan;
400-a discharge device;
500-a regeneration device;
610-first separator, 620-second separator, 630-third separator;
710-riser, 720-second return pipe, 730-third return pipe;
810-a first precipitator, 820-a second precipitator, 830-a third precipitator;
900-a cooling device;
1010-gas storage device, 1011-gas heat exchanger, 1012-gas induced draft fan, 1013-gas storage, 1020-second vent pipe, 1030-third vent pipe, 1040-second return feeder, 1050-third return feeder, 1060-first vent pipe, 1071-first cooling water inlet, 1072-first cooling water outlet, 1081-second cooling water inlet, 1082-second cooling water outlet, 1091-third cooling water inlet and 1092-third cooling water outlet.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. 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 application.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one.
The system for capturing carbon dioxide in flue gas provided by the embodiments of the present application is described in detail with reference to the accompanying drawings by specific embodiments and application scenarios thereof.
As shown in fig. 1, the embodiment of the present application discloses a system for capturing carbon dioxide in flue gas, and the disclosed system includes an adsorption device 100, a flue gas blower 200, a first circulation blower 310, an exhaust device 400, a regeneration device 500, and a first separator 610.
The first state adsorbent can obtain second state adsorbent and second state flue gas after reacting with first state flue gas, and the second state adsorbent in this application is the adsorbent after reacting with carbon dioxide, and the second state flue gas is the flue gas that does not contain carbon dioxide basically.
The adsorption device 100 is communicated with a first inlet of the first separator 610, the discharge device 400 is communicated with a first gas discharge port of the first separator 610, the regeneration device 500 is communicated with a first adsorbent discharge port of the first separator 610, the first circulating fan 310 is communicated with the adsorption device 100, so that a first central wind of the first circulating fan 310 can transport the second-state adsorbent and the second-state flue gas to the first separator 610 through the first inlet, after the first circulating fan 310 starts to operate, parameters such as wind quantity, wind speed and the like of the first central wind are stable, so that the transport of the first central wind to materials is stable, the stability of the whole system during operation is improved, the first separator 610 can separate a mixture of the second-state adsorbent and the second-state flue gas, so that the first separator 610 can separate the second-state adsorbent to the regeneration device 500 through the first adsorbent discharge port, the first separator 610 is also capable of separating the second state flue gas to the exhaust 400 through the first gas exhaust port such that the small solid particles of the second state sorbent can be separated from the second state flue gas containing substantially no carbon dioxide, thereby enabling the second state flue gas to be exhausted through the exhaust 400 without environmental damage.
The regeneration device 500 can be used as a reaction device for the second-state adsorbent, the regeneration device 500 is used for converting the second-state adsorbent into the first-state adsorbent, the regeneration device 500 is communicated with the adsorption device 100, so that the first-state adsorbent obtained by reaction in the regeneration device 500 can be conveyed into the adsorption device 100, and the first-state adsorbent used for adsorbing carbon dioxide in the adsorption device 100 can still return to the adsorption device 100 after being converted in different states to be used as the first-state adsorbent capable of reacting with the first-state flue gas, that is, the first-state adsorbent can realize material and function circulation in the system, so that the problem of low material circulation rate of the system for capturing carbon dioxide in flue gas in the background art can be solved.
The system for capturing carbon dioxide in flue gas disclosed in the embodiment of the present application improves the structure of the system in the related art, and a first-state adsorbent is disposed in the adsorption device 100, and the flue gas in the first state is conveyed to the adsorption device 100 by the flue gas fan 200, so that the first-state adsorbent and the first-state flue gas can react in the adsorption device 100 and obtain a second-state flue gas and a second-state adsorbent, and a mixture of the second-state flue gas and the second-state adsorbent can be conveyed to the first separator 610 under the conveying action of the first central wind of the first circulating fan 310.
In the case where the mixture of the second state flue gas and the second state sorbent enters the first separator 610, the first separator 610 is capable of separating a mixture of the second state flue gas and the second state sorbent, and can separate the second-state adsorbent into the regeneration device 500, the second-state flue gas into the exhaust device 400, thereby enabling the second-state adsorbent to be switched to the first-state adsorbent in the regeneration device 500, and finally enabling the first-state adsorbent to be transported to the adsorption device 100, enabling the adsorbent to be switched between different states in the system, and enables the first-state adsorbent available for reaction with carbon dioxide to be returned to the adsorption device 100 after undergoing a different state transition, again in the state of the first-state adsorbent, for recycling of the first-state adsorbent in the system. The technical scheme adopted by the embodiment of the application can solve the problem that the material circulation rate of the system for capturing the carbon dioxide in the flue gas is low in the background technology.
In the system for capturing carbon dioxide in flue gas disclosed in the embodiment of the present application, the adsorption device 100 may include a first reaction section 110 and a second reaction section 120, the first reaction section 110 is communicated with the second reaction section 120, a first-state adsorbent is disposed in the first reaction section 110, the flue gas fan 200 and the first circulation fan 310 are both communicated with the first reaction section 110, and the first inlet of the first separator 610 and the regeneration device 500 are both communicated with the second reaction section 120.
Under the above condition, since the flue gas blower 200 and the first circulating fan 310 are both communicated with the first reaction section 110, the first reaction section 110 can firstly introduce the first-state flue gas, so that the first-state adsorbent disposed in the first reaction section 110 can firstly react with the first-state flue gas, that is, the first reaction section 110 can firstly obtain the second-state flue gas and the second-state adsorbent after reaction. Meanwhile, the first-state flue gas which does not have to react in the first reaction section 110 can enter the second reaction section 120, so that the first-state adsorbent in the second reaction section 120 can continue to react with the first-state flue gas, and the first-state adsorbent is also used for obtaining the second-state flue gas and the second-state adsorbent.
When the system initially operates, the second reaction section 120 may also be provided with a first-state adsorbent, which is used to fill up the first-state adsorbent that has not been regenerated in the second reaction section 120, so that the first-state flue gas can also react in the second reaction section 120, and the first-state flue gas entering the adsorption device 100 can react with the first adsorbent in both the first reaction section 110 and the second reaction section 120. Divide into the setting of first reaction section 110 and second reaction section 120 with adsorption equipment 100, increased the contact time of adsorption equipment 100 with first state flue gas, increased the contact time of the carbon dioxide of first state adsorbent in the adsorption equipment 100 with first state flue gas promptly for the reaction of first state adsorbent and carbon dioxide can be more abundant, thereby can promote the adsorption rate of first state adsorbent to carbon dioxide.
In the above case, the first central wind of the first circulation fan 310 can transport the materials and the gases in the first reaction section 110 and the second reaction section 120 to the first inlet of the first separator 610, so as to facilitate the separation of the adsorbent and the gases by the first separator 610. The first-state sorbent obtained by the reaction in the regeneration device 500 can be transported to the second reaction section 120 first, so that the reaction with the first-state flue gas can be realized in the second reaction section 120.
In this application, for the convenience of placing the first state adsorbent in first reaction section 110 and second reaction section 120, all can be provided with the grid plate in first reaction section 110 and second reaction section 120, the grid plate can support the material, the grid plate can support the first state adsorbent promptly, make the first state adsorbent can be more for evenly distributed on the grid plate, also can make the first state flue gas that gets into among the adsorption equipment 100 comparatively even simultaneously, thereby can further be favorable to first state flue gas and first state adsorbent contact reaction, and then be favorable to promoting the adsorption efficiency of first state adsorbent.
In a further technical solution, the adsorption device 100 may further include a first material returning device 130, two ends of the first material returning device 130 are respectively communicated with the first reaction section 110 and the second reaction section 120, so that the first-state adsorbent in the second reaction section 120 can be transported to the first reaction section 110 through the first material returning device 130, and thus the first-state adsorbent starts to react from the first reaction section 110 and finally returns to the material circulation in the first reaction section 110.
In the system for capturing carbon dioxide in flue gas disclosed in the embodiment of the present application, the system may further include a riser 710, two ends of the riser 710 are respectively communicated with the second reaction section 120 and the first inlet of the first separator 610, in this case, under the driving of the first circulation fan 310, the first central wind may transport the second-state adsorbent and the second-state flue gas obtained after the reaction to the first separator 610 along the riser 710, so that the first separator 610 may conveniently perform gas-solid separation on the mixture of the second-state adsorbent and the second-state flue gas.
In the system for capturing carbon dioxide in flue gas disclosed in the embodiment of the present application, the system may further include a first dust collector 810 and a first vent pipe 1060, the first dust collector 810 is disposed between the first separator 610 and the exhaust device 400, one end of the first vent pipe 1060 is disposed between the first dust collector 810 and the exhaust device 400, and the other end of the first vent pipe 1060 is communicated with the first circulation fan 310.
In the above case, the first scrubber 810 may communicate with the first gas discharge port of the first separator 610, so that the second state flue gas separated by the first separator 610 can be conveyed into the first scrubber 810. Because the adsorbent can collide among device and the pipeline when being transported in the system, make a small part of adsorbent can become powdered, and this powdered adsorbent can be followed the second state flue gas and be separated the first gas outlet department to first separator 610 together, make powdered adsorbent also can get into first dust remover 810, thereby make first dust remover 810 can reject powdered adsorbent, and then can avoid powdered adsorbent to follow the second state flue gas and be discharged to the external environment by discharging device 400 together, can avoid the pollution that powdered adsorbent caused the external environment promptly.
Meanwhile, as the first ventilation pipe 1060 is further arranged in the first dust collector 810 and the discharge device 400, part of the second-state flue gas coming out of the first dust collector 810 can return to the first circulating fan 310 through the first ventilation pipe 1060 to provide the first central air for the first circulating fan 310, so that the second-state flue gas can also be recycled, which is beneficial to improving the economic benefit of the system.
In order to reduce the temperature of the adsorption device 100 and obtain the environmental temperature more suitable for the reaction in the adsorption device 100, the system may further include a first cooling water circulating device, the first cooling water circulating device includes a first cooling water pipe, a first cooling water inlet 1071 and a first cooling water outlet 1072, the first cooling water inlet 1071 and the first cooling water outlet 1072 are respectively disposed at two ends of the first cooling water pipe, the adsorption device 100 is provided with the first cooling water pipe, so that the cooling water can enter the first cooling water pipe from the first cooling water inlet 1071, and because the first cooling water pipe is disposed in the adsorption device 100, the first cooling water pipe can absorb the heat in the adsorption device 100, and the cooling water after absorbing heat can get back to the first cooling water circulating device from the first cooling water outlet 1072, so that the cooling water absorbing heat can be used in other places in the system where it is needed, thereby realizing the cyclic utilization of one heat in the system and being beneficial to improving the heat utilization rate of the system.
As described above, in the adsorption device 100, the first state adsorbent releases heat when reacting with the first state flue gas, and in the regeneration device 500, the second state adsorbent absorbs heat when switching to the first state adsorbent, and also in order to facilitate the switching of the second state adsorbent in the regeneration device 500, the system may further include a heating device connected to the regeneration device 500, so that the second state adsorbent in the regeneration device 500 can be switched to the first state adsorbent when the heating device heats. The heating device in the embodiment of the present application may be a device for delivering saturated hot steam, and may also be another heating device capable of helping the second-state adsorbent to realize conversion, and the embodiment of the present application does not limit a specific heating manner of the heating device.
In a further technical solution, when the second-state adsorbent is converted into the first-state adsorbent in the regeneration device 500, the carbon dioxide adsorbed in the second-state adsorbent is released, and in order to collect and store the released carbon dioxide, the system may further include a second circulation fan 320, a second separator 620, and a gas storage device 1010, wherein second inlets of the second circulation fan 320 and the second separator 620 are both communicated with the regeneration device 500, the gas storage device 1010 is communicated with a second gas discharge port of the second separator 620, and the regeneration device 500 is communicated with a second adsorbent discharge port of the second separator 620.
In the above case, the second central air in the second circulation fan 320 may transport the first-state adsorbent and the carbon dioxide gas in the regeneration device 500 to the second separator 620 through the second inlet, and the second separator 620 may separate the first-state adsorbent and the carbon dioxide gas, so as to save the step of collecting and storing the carbon dioxide gas in the gas storage device 1010, and at the same time, in order to prevent the purity of the carbon dioxide gas from decreasing, the carbon dioxide gas may be directly introduced into the second circulation fan 320 as the second central air to transport the adsorbent.
In a further scheme, the system may further include a second return pipe 720, two ends of the second return pipe 720 are respectively communicated with the second adsorbent discharge port and the regeneration device 500, so that the first-state adsorbent separated in the second separator 620 may be transported to the regeneration device 500 through the second return pipe 720, the second return pipe 720 serves as a pipeline specially used for returning, and it is possible to avoid pollution of other substances to the adsorbent in the returning process, thereby enabling the regeneration device 500 to obtain a relatively pure first-state adsorbent.
In order to further improve the purity of the carbon dioxide in the gas storage device 1010, the system may further include a second dust remover 820, the second dust remover 820 is disposed between the second gas discharge port of the second separator 620 and the gas storage device 1010, so that the second dust remover 820 can remove the adsorbent which is changed into powder due to transportation collision, and powder particles containing the adsorbent in the carbon dioxide gas collected by the gas storage device 1010 can be avoided, thereby ensuring the purity of the carbon dioxide in the gas storage device 1010.
In comparatively concrete scheme, gas storage device 1010 can include gas heat exchanger 1011, gaseous draught fan 1012 and gas storage ware 1013, in above-mentioned scheme, can set up second dust remover 820, gas heat exchanger 1011, gaseous draught fan 1012 and gas storage ware 1013 communicate in proper order, thereby make carbon dioxide gas after rejecting powdered adsorbent through second dust remover 820, carbon dioxide gas can let in and reduce temperature in the gas heat exchanger 1011, and carbon dioxide gas after the reduction temperature can let in gas draught fan 1012, make gas draught fan 1012 can transport carbon dioxide gas to gas storage ware 1013 smoothly in, be used for realizing that gas storage ware 1013 stores the collection of carbon dioxide.
In order to further realize the recycling of the gas, the system may further include a second vent pipe 1020, one end of the second vent pipe 1020 is disposed between the second dust remover 820 and the gas storage device 1010, and the other end of the second vent pipe 1020 is communicated with the second circulation fan 320, so that part of the carbon dioxide gas from which the powdered adsorbent has been removed can be directly introduced into the second circulation fan 320 from the second dust remover 820, thereby enabling the carbon dioxide gas to be recycled in the system.
The gas heat exchanger 1011 can be used for absorbing heat carried by carbon dioxide gas, in order to improve the efficiency of the gas heat exchanger 1011, the system can further comprise a second cooling water circulating device, the second cooling water circulating device can further comprise a second cooling water pipe, a second cooling water inlet 1081 and a second cooling water outlet 1082, the second cooling water inlet 1081 and the second cooling water outlet 1082 are respectively arranged at two ends of the second cooling water pipe, the second cooling water pipe is arranged in the gas heat exchanger 1011, so that cooling water in the second cooling water circulating device can enter the second cooling water pipe through the second cooling water inlet 1081, due to the second cooling water pipe arranged in the gas heat exchanger 1011, the second cooling water pipe can absorb heat in the gas heat exchanger 1011, and cooling water after absorbing heat can flow back to the second cooling water circulating device through the second cooling water outlet 1082, so as to further realize the recycling of heat in the system.
In the system for capturing carbon dioxide in flue gas disclosed in the embodiment of the application, the system may further include a cooling device 900, the cooling device 900 is disposed between the regeneration device 500 and the adsorption device 100, and two ends of the cooling device 900 are respectively communicated with the regeneration device 500 and the adsorption device 100, in this case, the first-state adsorbent in the regeneration device 500 may be transported to the cooling device 900 first, and the cooling device 900 may cool the first-state adsorbent at a higher temperature, so that the temperature of the first-state adsorbent may be lowered to a temperature suitable for the first-state adsorbent to react with the first-state flue gas, thereby the reaction efficiency of the first-state adsorbent may be improved, and the first-state adsorbent cooled by the cooling device 900 may enter the adsorption device 100 to react with the first-state flue gas.
In a further technical solution, in order to facilitate the transportation of the first-state adsorbent between the regeneration device 500 and the cooling device 900 and between the cooling device 900 and the adsorption device 100, the system may further include a second material returning device 1040 and a third material returning device 1050, the second material returning device 1040 is disposed between the regeneration device 500 and the cooling device 900, and the third material returning device 1050 is disposed between the cooling device 900 and the adsorption device 100, so that the first-state adsorbent in the regeneration device 500 may be transported to the cooling device 900 through the second material returning device 1040, and the first-state adsorbent in the cooling device 900 may be transported to the adsorption device 100 through the third material returning device 1050. The second material returning device 1040 and the third material returning device 1050 are disposed to assist the material in the regeneration device 500, i.e. the first-state adsorbent can be transported to the cooling device 900 more regularly and finally to the adsorption device 100. The second material returning device 1040 and the third material returning device 1050 are used as special material returning structures, which can reduce the collision of the first-state adsorbent during transportation, thereby reducing the ratio of the first-state adsorbent to the powdery adsorbent, and further reducing the consumption of the adsorbent when circulating in the whole system.
The cooling device 900 is for absorbing the excess heat in the first state adsorbent, and when the temperature of the first state adsorbent is reduced, the system can further use a cooling water circulation device to achieve the utilization rate of the heat by the system. A third cooling water circulation device may be provided, the third cooling water circulation device may further include a third cooling water pipe, a third cooling water inlet 1091 and a third cooling water outlet 1092, the third cooling water inlet 1091 and the third cooling water outlet 1092 are respectively provided at two ends of the third cooling water pipe, and a third cooling water pipe is provided in the cooling device 900, so that the cooling water in the third cooling water circulation device may enter the third cooling water pipe through the third cooling water inlet 1091, and after absorbing heat, the cooling water returns to the third cooling water circulation device through the third cooling water outlet 1092 again, so as to achieve the cyclic utilization of the heat in the system.
In the system for capturing carbon dioxide in flue gas disclosed in the embodiment of the present application, the system may further include a third circulation fan 330 and a third separator 630, the third circulation fan 330 is in communication with the cooling device 900, a third inlet of the third separator 630 is in communication with the cooling device 900, a third gas exhaust port of the third separator 630 is in communication with the third circulation fan 330, and a third adsorbent exhaust port of the third separator 630 is in communication with the cooling device 900, in which case, a third central wind in the third circulation fan 330 may transport the first-state adsorbent in the cooling device 900 to the third separator 630 through the third inlet, the third separator 630 may separate the relatively intact first-state adsorbent to the third adsorbent exhaust port, so that the relatively intact first-state adsorbent may be returned to the cooling device 900 again, and at the same time, a third central wind in the third circulation fan 330 may be separated to the third gas exhaust port, so that the third central wind coming out of the third circulation fan 330 can be returned to the third circulation fan 330 through the third gas discharge port for recycling the third central wind.
In the embodiment of the present application, the third central wind introduced into the third circulation fan 330 is to avoid reacting with the first-state adsorbent, so as to ensure the functionality of the first-state adsorbent. The gas introduced into the third circulation fan 330 may be nitrogen gas, or may also be inert gas such as helium gas and argon gas, and the embodiment of the present application does not specifically limit the type of the gas introduced into the third circulation fan 330.
In a further embodiment, in order to improve convenience of transporting the first-state adsorbent separated by the third separator 630 to the third adsorbent discharge port to the cooling device 900, the system may further include a third return pipe 730, and two ends of the third return pipe 730 are respectively communicated with the third adsorbent discharge port of the third separator 630 and the cooling device 900, in this case, when the third separator 630 separates the first-state adsorbent to the third adsorbent discharge port, the third return pipe 730 may transport the first-state adsorbent located at the third adsorbent discharge port to the cooling device 900.
The system for capturing carbon dioxide in flue gas disclosed in the embodiment of the present application may further include a third gas exhaust pipe 1030, and the third gas exhaust port of the third separator 630 and the third circulation fan 330 are respectively communicated with two ends of the third gas exhaust pipe 1030, so that the third gas exhaust pipe 1030 can transport the gas separated by the third separator 630 to the third gas exhaust port to the third circulation fan 330.
In order to remove the powdered adsorbent entering the third separator 630, the system may further include a third dust collector 830, the third dust collector 830 is disposed between the third gas outlet and the third gas pipe 1030, and is communicated with the gas outlet and the third gas pipe 1030, so that the gas separated to the third gas outlet can first enter the third dust collector 830, and thus the third dust collector 830 can remove the powdered adsorbent mixed in the gas, so as to ensure that the gas in the third dust collector 830 can smoothly enter the third circulating fan 330 through the third gas pipe 1030, and the powdered adsorbent does not obstruct the third gas pipe 1030 or the pipeline in the third circulating fan 330.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A system for capturing carbon dioxide in flue gas, comprising an adsorption device (100), a flue gas fan (200), a first circulation fan (310), an exhaust device (400), a regeneration device (500), and a first separator (610), wherein:
the flue gas fan (200) is communicated with the adsorption device (100) and is used for conveying the flue gas in a first state to the adsorption device (100), a first-state adsorbent is arranged in the adsorption device (100) and is used for reacting with the flue gas in the first state to obtain a second-state adsorbent and a second-state flue gas,
said adsorption means (100) being in communication with a first inlet of said first separator (610), said exhaust means (400) being in communication with a first gas exhaust of said first separator (610), said regeneration means (500) being in communication with a first adsorbent exhaust of said first separator (610);
the first circulating fan (310) is communicated with the adsorption device (100), the first central air of the first circulating fan (310) can convey the second-state adsorbent and the second-state flue gas to the first inlet, the regeneration device (500) is communicated with the adsorption device (100), and the regeneration device (500) is used for converting the second-state adsorbent into the first-state adsorbent.
2. The system for capturing carbon dioxide in flue gas according to claim 1, wherein the adsorption device (100) comprises a first reaction section (110) and a second reaction section (120), the first reaction section (110) and the second reaction section (120) are communicated, the first reaction section (110) is provided with the first-state adsorbent, the flue gas fan (200) and the first circulating fan (310) are both communicated with the first reaction section (110), and the first inlet of the first separator (610) and the regeneration device (500) are both communicated with the second reaction section (120).
3. The system for capturing carbon dioxide in flue gas according to claim 1, further comprising a first dust collector (810) and a first vent pipe (1060), wherein the first dust collector (810) is disposed between the first separator (610) and the discharging device (400), one end of the first vent pipe (1060) is disposed between the first dust collector (810) and the discharging device (400), and the other end of the first vent pipe (1060) is communicated with the first circulation fan (310).
4. The system for capturing carbon dioxide in flue gas according to claim 1, further comprising a first cooling water circulation device, wherein the first cooling water circulation device comprises a first cooling water pipe, a first cooling water inlet (1071) and a first cooling water outlet (1072), the first cooling water inlet (1071) and the first cooling water outlet (1072) are respectively arranged at two ends of the first cooling water pipe, and the first cooling water pipe is arranged in the adsorption device (100).
5. The system for capturing carbon dioxide in flue gas according to claim 1, further comprising a second recycle fan (320), a second separator (620) and a gas storage device (1010), wherein the second inlets of the second recycle fan (320) and the second separator (620) are both in communication with the regeneration device (500), the gas storage device (1010) is in communication with the second gas discharge of the second separator (620), and the regeneration device (500) is in communication with the second sorbent discharge of the second separator (620).
6. The system for capturing carbon dioxide in flue gas according to claim 5, further comprising a second precipitator (820), the second precipitator (820) being disposed between the second separator (620) and the gas storage device (1010).
7. The system for capturing carbon dioxide in flue gas according to claim 6, wherein the gas storage device (1010) comprises a gas heat exchanger (1011), a gas induced draft fan (1012) and a gas storage (1013), and the second dust collector (820), the gas heat exchanger (1011), the gas induced draft fan (1012) and the gas storage (1013) are communicated in sequence.
8. The system for capturing carbon dioxide in flue gas according to claim 7, further comprising a second cooling water circulation device, wherein the second cooling water circulation device comprises a second cooling water pipe, a second cooling water inlet (1081) and a second cooling water outlet (1082), the second cooling water inlet (1081) and the second cooling water outlet (1082) are respectively arranged at two ends of the second cooling water pipe, and the second cooling water pipe is arranged in the gas heat exchanger (1011).
9. The system for capturing carbon dioxide in flue gas according to claim 1, further comprising a cooling device (900), wherein the cooling device (900) is arranged between the regeneration device (500) and the adsorption device (100), and two ends of the cooling device (900) are respectively communicated with the regeneration device (500) and the adsorption device (100).
10. The system for capturing carbon dioxide in flue gas according to claim 9, further comprising a third cooling water circulation device, wherein the third cooling water circulation device comprises a third cooling water pipe, a third cooling water inlet (1091) and a third cooling water outlet (1092), the third cooling water inlet (1091) and the third cooling water outlet (1092) are respectively arranged at two ends of the third cooling water pipe, and the third cooling water pipe is arranged in the cooling device (900).
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