[특허]Process for removing carbon dioxide from combustion exhaust gas

Process for removing carbon dioxide from combustion exhaust gas 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C01B-031/20
출원번호	US-0002830 (1993-01-15)
우선권정보	JP-0006468 (1992-01-17)
발명자 / 주소	Fujii Masumi (Osaka JPX) Suda Taiichiro (Osaka JPX) Hotta Yoshitsugu (Osaka JPX) Kobayashi Kenji (Osaka JPX) Yoshida Kunihiko (Amagasaki JPX) Shimojo Shigeru (Amagasaki JPX) Karasaki Mutsunori (Tokyo
출원인 / 주소	The Kansai Electric Power Co., Inc. (Osaka JPX 03) Mitsubishi Jukogyo Kabushiki Kaisha (Tokyo JPX 03)
인용정보	피인용 횟수 : 110 인용 특허 : 0

초록 ▼

A process for removing carbon dioxide (CO2) from a combustion exhaust gas of a boiler (1) which generates steam for driving high (3), intermediate (7), and low (8) pressure turbines. The process comprises the steps of removing CO2 in the combustion exhaust gas by absorption with a CO2-absorbing liquid (19), liquefying the removed CO2 (28) by compression (42) and cooling (48), storing (52) the CO2, and regenerating the CO2-absorbing liquid by a CO2-absorbing liquid regeneration column (24) equipped with a reboiler (30). In the process, a part (40) of steam discharged from the high pressure turbine (3) is used to drive turbines (41, 43) for compressors (42, 44) that compress the CO2, and a refrigerant for cooling the CO2, and steam (45) discharged from the compressor turbines is supplied as a heating source to the reboiler (30) for the regeneration of the CO2-absorbing liquid. A decrease in the overall power plant efficiency due to the removal of carbon dioxide from the exhaust gas can be reduced.

대표청구항 ▼

A process for removing carbon dioxide (CO2) from a combustion exhaust gas of a boiler generating steam conducted to a first high pressure turbine, a second intermediate pressure turbine operating at a pressure lower than said first turbine, and a third low pressure turbine operating at a pressure lower than said second turbine for driving said turbines, comprising: removing CO2 in said combustion exhaust gas by absorbing said CO2 in a CO2-absorbing liquid; providing a CO2-absorbing liquid regeneration column having a reboiler; conducting said CO2-absorbing liquid through said absorbing liquid regeneration column for regenerating said CO2-absorbing liquid; providing a fourth turbine operatively connected to a first compressor for driving said first compressor thereby; providing a fifth turbine operatively connected to a second compressor for driving said second compressor thereby; conducting a part of steam discharged from said first turbine to said fourth and fifth turbines; driving said fourth and fifth turbines by said part of steam discharged from said first turbine; driving said first and second compressors by said fourth and fifth turbines, respectively; conducting said removed CO2 to said first compressor and compressing said removed CO2 therein; conducting said compressed CO2 from said first compressor to a cooler; passing a refrigerant through said second compressor and through said cooler for cooling and liquifying said compressed CO2; storing said liquified CO2; and conducting steam discharged from said first and second compressor turbines to said reboiler as a heating source for said reboiler for regeneration of said CO2-absorbing liquid.

이 특허를 인용한 특허 (110)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Process for removing carbon dioxide from combustion exhaust gas 원문보기

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이 특허를 인용한 특허 (110)

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Process for removing carbon dioxide from combustion exhaust gas 원문보기

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