Single compression system and process for capturing carbon dioxide
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01D-045/16
B01D-053/04
B01J-020/04
B01J-020/08
B01J-020/34
B01D-053/10
B01D-053/02
출원번호
US-0027345
(2014-09-29)
등록번호
US-10166502
(2019-01-01)
우선권정보
IN-3190/MUM/2013 (2013-10-09)
국제출원번호
PCT/IN2014/000628
(2014-09-29)
국제공개번호
WO2015/052726
(2015-04-16)
발명자
/ 주소
Amte, Vinay
Das, Asit Kumar
Sengupta, Surajit
Yadav, Manoj
Mandal, Sukumar
Pal, Alok
Gupta, Ajay
Bhujade, Ramesh
Akuri, Satyanarayana Reddy
Dongara, Rajeshwer
출원인 / 주소
RELIANCE INDUSTRIES LIMITED
대리인 / 주소
Westman, Champlin & Koehler, P.A.
인용정보
피인용 횟수 :
0인용 특허 :
16
초록
The present disclosure provides a single compression system and a process for capturing carbon dioxide (CO2) from a flue gas stream containing CO2. The disclosure also provides a process for regeneration of the carbon dioxide capture media.
대표청구항▼
1. A single compression process for capturing carbon dioxide (CO2) from a flue gas stream containing CO2; said process comprising the following steps: i. directing the flow of the flue gas stream through a first blower to obtain a pressurized flue gas stream with elevated temperature;ii. extracting
1. A single compression process for capturing carbon dioxide (CO2) from a flue gas stream containing CO2; said process comprising the following steps: i. directing the flow of the flue gas stream through a first blower to obtain a pressurized flue gas stream with elevated temperature;ii. extracting the heat from the pressurized flue gas stream in a first heat exchanger using circulating thermic fluid to obtain a heated thermic fluid and a cooled pressurized flue gas stream;iii. directing the cooled pressurized flue gas stream to a CO2 adsorber;iv. passing in the adsorber a fluidized lean CO2 capture media to generate a stream comprising rich capture media and flue gas devoid of CO2;v. separating in a first cyclone said rich capture media and said stream of flue gas devoid of CO2;vi. directing the separated stream of flue gas devoid of CO2 to a stack for further treatment;vii. leading said separated rich capture media to a second heat exchanger where it is heated to near regeneration temperature, at least partially, using said heated thermic fluid to obtain a heated rich capture media;viii. feeding said heated rich capture media to a desorber;ix. heating the heated rich capture media in the desorber by circulating said heated thermic fluid to desorb CO2 from the heated rich capture media to generate a mixture of hot lean capture media and CO2 gas;x. separating CO2 gas from the hot lean capture media; andxi. cooling the separated hot and lean capture media in a third heat exchanger for adsorption in the adsorber for reiteration of the process to provide cooled lean capture media. 2. The process as claimed in claim 1, wherein a portion of the cooled pressurized flue gas stream is used for fluidizing said separated capture media in the third heat exchanger. 3. The process as claimed in claim 1, wherein the temperature of the adsorber is controlled with the help of external cold water circulating through the adsorber during the process of adsorption of the CO2 on the cool and lean capture media. 4. The process as claimed in claim 1, wherein said capture media is at least one selected from the group consisting of supported alkali metal carbonate, supported alkali metal oxide and supported amine. 5. The process as claimed in claim 1, wherein the rich capture media emerging from the adsorber after separation from the flue gas stream devoid of CO2 is recycled via the first cyclone to the adsorber. 6. The process as claimed in claim 1, wherein, in the second heat exchanger, said rich capture media is heated by a circulating thermic fluid leaving the desorber to obtain a warm thermic fluid leaving the second heat exchanger. 7. The process as claimed in claim 1, wherein said adsorber and said desorber are circulating interconnected fluidized bed reactors operating in at least one regime selected from the group consisting of dense, bubbling, entrained, turbulent and fast fluidization. 8. The process as claimed in claim 1, wherein the warm thermic fluid leaving the second heat exchanger is cooled before storing in a thermic fluid storage tank for further circulation in the process. 9. The process as claimed in claim 1, wherein a portion of the CO2 generated in the desorber is pressurized for feeding to the desorber, as stream, and optionally to the second heat exchanger as stream, for fluidization of the rich capture media. 10. The process as claimed in claim 1, wherein the CO2 is separated from the hot and lean capture media in a second cyclone and a portion of the separated CO2 is cooled in the fifth heat exchanger for downstream use. 11. The process as claimed in claim 1, wherein the thermic fluid is pressurized by means of a pump before feeding to said first heat exchanger. 12. The process as claimed in claim 1, wherein the hot and lean capture media is cooled in the third heat exchanger with the help of a supply of externally provided cold water to obtain cooled lean capture media. 13. The process as claimed in claim 1, wherein a stream of make-up capture media is introduced in said cooled lean capture media before entering the adsorber. 14. A single compression system for capturing carbon dioxide (CO2) from a flue gas stream containing CO2; said system comprising: i. a first blower adapted to receive the flue gas stream and pressurize said flue gas stream to generate a pressurized flue gas stream with elevated temperature;ii. a first heat exchanger adapted to receive said pressurized flue gas stream and thermic fluid and transfer heat from said pressurized flue gas stream to said thermic fluid to obtain heated thermic fluid and a cooled pressurized flue gas stream;iii. an adsorber adapted to receive said cooled pressurized flue gas stream, fluidized cool and lean capture media and cooled lean capture media emerging from a third heat exchanger, said capture media adapted to adsorb CO2 to generate a rich capture media and a stream of flue gas devoid of CO2;iv. a second heat exchanger adapted to receive said rich capture media and heat said rich capture media to near a predefined regeneration temperature, to obtain a heated rich capture media;v. a desorber adapted to receive said heated rich capture media and further heat said heated rich capture media to desorb CO2 to generate a hot and lean capture media and CO2 gas;vi. a thermic fluid circulating system adapted to circulate said thermic fluid through said first heat exchanger, said desorber and said second heat exchanger, said thermic fluid circulating system including a thermic fluid storage tank and a pump; andvii. a third heat exchanger adapted to cool said hot and lean capture media to generate cooled lean capture media for the adsorption in said adsorber. 15. The system as claimed in claim 14, wherein said capture media is at least one selected from the group consisting of supported alkali metal carbonate, supported alkali metal oxide and supported amine. 16. The system as claimed in claim 14, wherein said adsorber and said desorber are circulating interconnected fluidized bed reactors operating in at least one regime selected from the group consisting of dense, bubbling, entrained, turbulent and fast fluidization. 17. The system as claimed in claim 14, which further includes a first cyclone adapted to separate said rich capture media and said stream of flue gas devoid of CO2; a second cyclone adapted to separate said lean capture media and CO2 gas; and a second blower adapted to receive CO2 gas from said second cyclone and supply the pressurized CO2 gas to said desorber, as stream, and optionally to said second heat exchanger, as stream. 18. The system as claimed in claim 14, which further includes a cold water source adapted to supply cold water to said adsorber, said third heat exchanger and said thermic fluid circulating system. 19. The system as claimed in claim 14, wherein said thermic fluid circulating system includes a diverter adapted to divert a portion of the thermic fluid stream exiting the desorber and going to the thermic fluid storage tank, to flow to the tank via the second heat exchanger. 20. The system as claimed in claim 14, wherein a make-up capture media stream is introduced in said cooled lean capture media exiting the third heat exchanger before entering the adsorber.
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이 특허에 인용된 특허 (16)
Henry W. Pennline ; James S. Hoffman, Carbon dioxide capture process with regenerable sorbents.
Gaffney Thomas Richard ; Golden Timothy Christopher ; Mayorga Steven Gerard ; Brzozowski Jeffrey Richard ; Taylor Fred William, Carbon dioxide pressure swing adsorption process using modified alumina adsorbents.
Deckman, Harry W.; Kelley, Bruce T.; Hershkowitz, Frank; Chance, Ronald R.; Northrop, Paul S.; Corcoran, Jr., Edward W., Temperature swing adsorption of CO.
Kelley, Bruce T.; Deckman, Harry W.; Hershkowitz, Frank; Northrop, Paul S.; Ravikovitch, Peter I., Temperature swing adsorption of CO2 from flue gas utilizing heat from compression.
Cioffi Lawrence (2166 Morrow Ave. Niskayuna NY 12309) Cowles Harold R. (9355 N. 91st St. ; #120 Scottsdale AZ 85258), VOC control/solvent recovery system.
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