Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1987-12-01
1989-10-24
Spitzer, Robert
Gas separation
Means within gas stream for conducting concentrate to collector
55 48, 55 50, 55 51, 549538, B01D 5314
Patent
active
048759090
ABSTRACT:
In the recovery of ethylene oxide from the gas resulting from catalytic gas-phase oxidation of ethylene with a molecular oxygen-containing gas and consequently containing ethylene oxide, a method which comprises subjecting the bottom liquid of an ethylene oxide stripper to a flashing treatment thereby separating the bottom liquid into a vapor-phase part and a liquid-phase part, introducing the vapor-phase part in a compressed state into the bottom of the ethylene oxide stripper, and circulating the liquid-phase part to the absorber. The liquid-phase part, after exchanging heat with the bottom of the ethylene oxide absorber, is caused by a heat pump to liberate thermal energy and generate steam. Further, the liquid-phase part can be used as a heat source for the ethylene oxide refiner and/or the light ends stripper. Moreover, the gas from the top of the ethylene oxide stripper can be used as a heat source for the ethylene oxide refiner.
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Kajimoto Yoshiaki
Kakimoto Yukihiko
Kiguchi, deceased Isamu
Sawada Masayuki
Atochem
Behr Omri M.
Nippon Shokubai Kasaku Kogyo Co., Ltd.
Spitzer Robert
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