CN216347344U - Device for realizing carbon capture and liquefaction by using ammonia crystallization method - Google Patents
Device for realizing carbon capture and liquefaction by using ammonia crystallization method Download PDFInfo
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- CN216347344U CN216347344U CN202122519253.8U CN202122519253U CN216347344U CN 216347344 U CN216347344 U CN 216347344U CN 202122519253 U CN202122519253 U CN 202122519253U CN 216347344 U CN216347344 U CN 216347344U
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2
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Abstract
本实用新型涉及一种利用结晶氨法实现碳捕集与液化的装置，属于吸收式制冷及热泵领域，包括二氧化碳捕集模块、氨气吸收器、发生器、压缩机和蒸发器，二氧化碳捕集模块的混合气体出口连接氨气吸收器的气体入口，氨气吸收器的二氧化碳出口通过压缩机连接蒸发器的二氧化碳入口，氨气吸收器的贫液入口连接发生器的贫液出口，氨气吸收器的富液出口连接发生器的富液进口，发生器的氨气出口连接蒸发器的氨进口，蒸发器用于利用氨为二氧化碳降温冷凝。本实用新型可同时实现碳捕集和二氧化碳液化，通过吸收法分离氨气和二氧化碳，有效解决了氨法捕获氨逃逸的问题，同时降低了碳氨分离过程压缩分离的能耗。
The utility model relates to a device for realizing carbon capture and liquefaction by using a crystalline ammonia method, belonging to the field of absorption refrigeration and heat pumps, comprising a carbon dioxide capture module, an ammonia absorber, a generator, a compressor and an evaporator. The mixed gas outlet of the module is connected to the gas inlet of the ammonia absorber, the carbon dioxide outlet of the ammonia absorber is connected to the carbon dioxide inlet of the evaporator through the compressor, and the lean liquid inlet of the ammonia absorber is connected to the lean liquid outlet of the generator. The rich liquid outlet of the generator is connected to the rich liquid inlet of the generator, the ammonia gas outlet of the generator is connected to the ammonia inlet of the evaporator, and the evaporator is used to use ammonia to cool and condense carbon dioxide. The utility model can realize carbon capture and carbon dioxide liquefaction at the same time, separate ammonia gas and carbon dioxide through the absorption method, effectively solve the problem of escape of ammonia captured by the ammonia method, and simultaneously reduce the energy consumption of compression and separation in the carbon and ammonia separation process.
Description
Technical Field
The utility model belongs to the field of absorption refrigeration and heat pumps, and particularly relates to a device for realizing carbon capture and liquefaction by using a crystalline ammonia method.
Background
Carbon dioxide is one of the fierce and fierce global temperature rise, and the carbon dioxide emission is definitely required to be reduced by 18% in the latest fourteen-five planning outline. Under the global trend of low carbon emission requirements, the method has important significance for the research of carbon dioxide capture and sequestration.
The chemical absorption method is the most widely used CO in the flue gas at present2The post-combustion trapping technology uses hot potash solution, alcohol amine solution and ammonia water solution as chemical absorbent. The hot potash process has wide application in ammonia synthesizing apparatus, but has the problems of strong corrosion and high energy consumption. The most widely used alcohol amine method is monoethanolamine solution, but the alcohol amine solution has the problems of easy oxidative degradation, strong corrosivity, higher regeneration energy consumption and the like. The ammonia water solution has relatively low corrosivity and good absorption capacity, and can be regenerated at a lower temperature, so that the ammonia water solution has a good application prospect. However, the ammonia process is limited in application due to the problem of ammonia escape in ammonia decarburization, the ammonia concentration is reduced due to ammonia escape, the absorption effect is affected, and meanwhile, the escaped ammonia gas causes pollution. The conventional ammonia crystallization method for capturing and separating carbon and ammonia through compression and condensation requires high energy consumption. Therefore, an apparatus for capturing and liquefying carbon by using a crystalline ammonia method is provided to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems and provide a device which has a simple structure and reasonable design and realizes carbon capture and liquefaction by using a crystal ammonia method.
The utility model realizes the purpose through the following technical scheme:
a device for realizing carbon capture and liquefaction by utilizing a crystallization ammonia method comprises a carbon dioxide capture module, an ammonia gas absorber, a generator, a compressor and an evaporator, wherein the carbon dioxide capture module is used for capturing carbon dioxide in a mixed gas containing carbon dioxide by utilizing the crystallization ammonia method to form a mixed gas of carbon dioxide and ammonia gas, a mixed gas outlet of the carbon dioxide capture module is connected with a gas inlet of the ammonia gas absorber, the ammonia gas absorber is used for separating carbon dioxide and ammonia gas, a carbon dioxide outlet of the ammonia gas absorber is connected with a carbon dioxide inlet of the evaporator through the compressor, a barren solution inlet of the ammonia gas absorber is connected with a barren solution outlet of the generator, a rich solution outlet of the ammonia gas absorber is connected with a rich solution inlet of the generator, an ammonia gas outlet of the generator is connected with an ammonia inlet of the evaporator, and the evaporator is used for cooling and condensing the carbon dioxide by utilizing ammonia, the evaporator is provided with a carbon dioxide outlet, and the ammonia outlet of the evaporator is connected with the ammonia inlet of the carbon dioxide capture module.
As a further optimization scheme of the utility model, the ammonia gas outlet of the generator is connected with the ammonia inlet of the evaporator through the precooler.
As a further optimization scheme of the utility model, a throttle valve is arranged between the precooler and the ammonia inlet of the evaporator.
As a further optimization scheme of the utility model, the rich liquid outlet of the ammonia gas absorber is connected with the rich liquid inlet of the generator through a rich liquid pump.
As a further optimization scheme of the utility model, the carbon dioxide capture module comprises an absorption tower, a crystallization separator, a desorber and an ammonia water absorber, wherein a mixed gas inlet is arranged on the lower half part of the absorption tower, a purified gas outlet is arranged at the upper end of the absorption tower, an outlet at the bottom end of the absorption tower is connected with the crystallization separator, a crystal outlet of the crystallization separator is connected with a crystal inlet of the desorber, a gas outlet of the desorber is connected with a gas inlet of the ammonia water absorber, liquid outlets of the desorber and the crystallization separator are both connected with the ammonia water absorber, an ammonia water outlet of the ammonia water absorber is connected with an ammonia water inlet at the upper end of the absorption tower, and an ammonia gas outlet of the evaporator is connected with an ammonia gas inlet of the ammonia water absorber.
As a further optimization scheme of the utility model, liquid outlets of the desorber and the crystallization separator are both connected with an ammonia water absorber through a liquid storage tank, and the ammonia water absorber is connected with an ammonia water inlet at the upper end of the absorption tower through a solution pump.
The utility model has the beneficial effects that: the device can realize carbon capture and carbon dioxide liquefaction simultaneously, and ammonia and carbon dioxide are separated by an absorption method, so that the problem of ammonia escape captured by an ammonia method is effectively solved, and the energy consumption of compression and separation in the carbon-ammonia separation process is reduced.
Drawings
FIG. 1 is a schematic flow diagram of an apparatus for capturing and liquefying carbon by a crystalline ammonia process according to the present invention.
In the figure: 1. an absorption tower; 2. a crystallization separator; 3. a desorber; 4. an ammonia gas absorber; 5. a throttle valve; 6. an evaporator; 7. an ammonia absorber; 8. a liquid storage tank; 9. a mixed gas inlet; 10. a purified gas outlet; 11. a compressor; 12. a precooler; 13. a generator; 14. a rich liquor pump; 15. a solution pump; 16. and (5) a carbon dioxide outlet.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
As shown in fig. 1, the apparatus for capturing and liquefying carbon by using a crystalline ammonia method in this embodiment includes a carbon dioxide capturing module, an ammonia gas absorber 4, a generator 13, a compressor 11 and an evaporator 6, the carbon dioxide capturing module is configured to capture carbon dioxide in a mixed gas containing carbon dioxide by using the crystalline ammonia method to form a mixed gas of carbon dioxide and ammonia gas, a mixed gas outlet of the carbon dioxide capturing module is connected to a gas inlet of the ammonia gas absorber 4, the ammonia gas absorber 4 is configured to separate carbon dioxide and ammonia gas, a carbon dioxide outlet 16 of the ammonia gas absorber 4 is connected to a carbon dioxide inlet of the evaporator 6 through the compressor 11, a lean liquid inlet of the ammonia gas absorber 4 is connected to a lean liquid outlet of the generator 13, a rich liquid outlet of the ammonia gas absorber 4 is connected to a rich liquid inlet of the generator 13 through a rich liquid pump 14, an ammonia gas outlet of the generator 13 is connected to an ammonia gas inlet of the evaporator 6 through a precooler 12, and a throttle valve 5 is arranged between the precooler 12 and the ammonia inlet of the evaporator 6, the evaporator 6 is used for cooling and condensing carbon dioxide by using ammonia, the evaporator 6 is provided with a carbon dioxide outlet 16, and the ammonia outlet of the evaporator 6 is connected with the ammonia inlet of the carbon dioxide trapping module.
The carbon dioxide entrapment module includes absorption tower 1, crystallization separator 2, desorber 3, aqueous ammonia absorber 7, 1 lower half of absorption tower is equipped with mist entry 9, the absorption tower upper end is equipped with purified gas outlet 10, 1 bottom exit linkage crystallization separator 2 of absorption tower, the crystal entry of crystal exit linkage desorber 3 of crystallization separator 2, the gas inlet of ammonia absorber 4 is connected to the gas outlet of desorber 3, the liquid outlet of desorber 3 and crystallization separator 2 all connects aqueous ammonia absorber 7 through liquid storage pot 8, the aqueous ammonia export of aqueous ammonia absorber 7 passes through the upper end aqueous ammonia import that solution pump 15 connects absorption tower 1, the ammonia outlet of evaporimeter 6 connects the ammonia import of aqueous ammonia absorber 7.
The mixed gas containing carbon dioxide enters the absorption tower 1 from the lower half part, the ammonia water solution enters from the upper end of the absorption tower 1 and is in countercurrent contact with the carbon dioxide-containing flue gas entering from the lower section of the absorption tower 1 to absorb the carbon dioxide, the absorbed product enters the crystallization separator 2, the separated liquid enters the liquid storage tank 8, the crystal enters the desorber 3, the desorbed liquid product enters the liquid storage tank 8, the mixed gas of the carbon dioxide and the ammonia gas enters the ammonia gas absorber 4, the separated carbon dioxide enters the evaporator 6 through the compressor 11, and the liquefied carbon dioxide obtained after condensation is discharged from the carbon dioxide outlet 16. Rich working medium liquid for absorbing ammonia in the ammonia absorber 4 enters the generator 13 through the rich liquid pump 14, the generated ammonia is condensed by the precooler 12 to obtain liquid ammonia, the liquid ammonia enters the evaporator 6 through the throttle valve 5, the evaporated ammonia enters the ammonia water absorber 7, the absorbed ammonia water is conveyed to the carbon dioxide absorption tower through the solution pump 15 to circularly absorb carbon dioxide, carbon capture and carbon dioxide liquefaction can be realized simultaneously, the ammonia and the carbon dioxide are separated through an absorption method, the problem of ammonia escape captured by the ammonia method is effectively solved, and the energy consumption of compression separation in the carbon-ammonia separation process is reduced.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (6)
1. A device for realizing carbon capture and liquefaction by using a ammonia crystallization method is characterized by comprising a carbon dioxide capture module, an ammonia gas absorber, a generator, a compressor and an evaporator, wherein the carbon dioxide capture module is used for capturing carbon dioxide in a mixed gas containing carbon dioxide by using the ammonia crystallization method to form a mixed gas of carbon dioxide and ammonia gas, a mixed gas outlet of the carbon dioxide capture module is connected with a gas inlet of the ammonia gas absorber, the ammonia gas absorber is used for separating carbon dioxide and ammonia gas, a carbon dioxide outlet of the ammonia gas absorber is connected with a carbon dioxide inlet of the evaporator through the compressor, a barren solution inlet of the ammonia gas absorber is connected with a barren solution outlet of the generator, a rich solution outlet of the ammonia gas absorber is connected with a rich solution inlet of the generator, an ammonia gas outlet of the generator is connected with an ammonia inlet of the evaporator, and the evaporator is used for cooling and condensing the carbon dioxide by using ammonia, the evaporator is provided with a carbon dioxide outlet, and the ammonia outlet of the evaporator is connected with the ammonia inlet of the carbon dioxide capture module.
2. The device for realizing carbon capture and liquefaction by using the ammonia crystallization method according to claim 1, wherein the ammonia gas outlet of the generator is connected with the ammonia inlet of the evaporator through a precooler.
3. The apparatus for carbon capture and liquefaction by ammonia crystallization according to claim 2, wherein a throttle valve is provided between the precooler and the ammonia inlet of the evaporator.
4. The apparatus for carbon capture and liquefaction by ammonia crystallization according to claim 1, wherein the rich liquid outlet of the ammonia gas absorber is connected with the rich liquid inlet of the generator through a rich liquid pump.
5. The device for capturing and liquefying carbon by using the ammonia crystallization method according to claim 1, wherein the carbon dioxide capturing module comprises an absorption tower, a crystallization separator, a desorber and an ammonia water absorber, the lower half part of the absorption tower is provided with a mixed gas inlet, the upper end of the absorption tower is provided with a purified gas outlet, the outlet at the bottom end of the absorption tower is connected with the crystallization separator, the crystal outlet of the crystallization separator is connected with the crystal inlet of the desorber, the gas outlet of the desorber is connected with the gas inlet of the ammonia gas absorber, the liquid outlets of the desorber and the crystallization separator are both connected with the ammonia water absorber, the ammonia water outlet of the ammonia water absorber is connected with the ammonia water inlet at the upper end of the absorption tower, and the ammonia gas outlet of the evaporator is connected with the ammonia gas inlet of the ammonia water absorber.
6. The device for realizing carbon capture and liquefaction by using the ammonia crystallization method according to claim 5, wherein the liquid outlets of the desorber and the crystallization separator are connected with an ammonia water absorber through a liquid storage tank, and the ammonia water absorber is connected with an upper ammonia water inlet of the absorption tower through a solution pump.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122519253.8U CN216347344U (en) | 2021-10-19 | 2021-10-19 | Device for realizing carbon capture and liquefaction by using ammonia crystallization method |
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| CN202122519253.8U CN216347344U (en) | 2021-10-19 | 2021-10-19 | Device for realizing carbon capture and liquefaction by using ammonia crystallization method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116078120A (en) * | 2023-01-17 | 2023-05-09 | 安徽普泛能源技术有限公司 | Carbon ammonia recovery liquefaction system and process for comprehensive energy utilization |
| CN116139672A (en) * | 2023-03-10 | 2023-05-23 | 哈尔滨工业大学 | An ammonia-based carbon capture system and carbon capture method based on solid particle synergy |
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2021
- 2021-10-19 CN CN202122519253.8U patent/CN216347344U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116078120A (en) * | 2023-01-17 | 2023-05-09 | 安徽普泛能源技术有限公司 | Carbon ammonia recovery liquefaction system and process for comprehensive energy utilization |
| CN116139672A (en) * | 2023-03-10 | 2023-05-23 | 哈尔滨工业大学 | An ammonia-based carbon capture system and carbon capture method based on solid particle synergy |
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Address after: 230000 building 6, shuimuyuan, Yanhu hi tech R & D base (Tsinghua Science and Technology City, Hefei), West Xiyou Road, North Jinxiu Avenue, Hefei Economic and Technological Development Zone, Anhui Province Patentee after: Anhui Pufan Energy Technology Co., Ltd. Country or region after: China Address before: 230000 building 6, shuimuyuan, Yanhu hi tech R & D base (Tsinghua Science and Technology City, Hefei), West Xiyou Road, North Jinxiu Avenue, Hefei Economic and Technological Development Zone, Anhui Province Patentee before: Anhui pupan Energy Technology Co.,Ltd. Country or region before: China |