Apparatus and process for removing carbon dioxide from combustion exhaust gas

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United States of America Patent

PATENT NO 5318758
SERIAL NO

07847733

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An apparatus and a process for removing CO.sub.2 from a combustion exhaust gas, by effecting counterflow contact of aqueous alkanolamine solution with the combustion exhaust gas to absorb CO.sub.2 from the gas in the alkanolamine solution and effecting a further contact of the gas with either, condensate water formed by causing condensation of the gas after removal of CO.sub.2, or condensate water formed by causing condensation of the combustion exhaust gas directly after combustion of the fuel. The apparatus includes a tower (1), a first contact section (2) in the tower through which the exhaust gas flows upwardly in counterflow contact with the aqueous alkanolamine solution dispersed by a nozzle device (7) downstream of the first contact section (2), a second contact section (3) in the tower (1) downstream of the nozzle device (7) for effecting counterflow contact of reflux water from a spent absorbent liquor regenerating tower (28) with the gas after removal of CO.sub.2. The temperature of the aqueous alkanolamine solution to be supplied to the CO.sub.2 -removing tower (1) is adjusted in such a manner that the temperature of the exhaust gas at the entrance (4) of the CO.sub.2 -removing tower and that of the treated gas at the exit (5) of the CO.sub.2 -removing tower are the same.

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Patent Owner(s)

Patent OwnerAddress
KANSAI ELECTRIC POWER CO INC THE6-16 KAKANOSHIMA 2-CHOME KITA-KU OSAKA-SHI
MITSUBISHI JUKOGYO KABUSHIKI KAISHA (50%)5-1 MARUNOUCHI 2-CHOME CHIYODA-KU TOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujii, Masumi Ikoma, JP 12 381
Hotta, Yoshitsugu Osaka, JP 8 379
Iijima, Masaki Tokyo, JP 130 1631
Karasaki, Mutsunori Tokyo, JP 10 429
Kobayashi, Kenji Osaka, JP 437 4733
Mitsuoka, Shigeaki Hiroshima, JP 34 848
Seto, Touro Hiroshima, JP 1 87
Shimojo, Shigeru Osaka, JP 19 602
Suda, Taiichiro Nara, JP 11 391
Tomikawa, Fumio Kawasaki, JP 12 351
Yoshida, Kunihiko Kyoto, JP 27 495

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