发明名称 |
Method for recovery of ethylene oxide |
摘要 |
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.
|
申请公布号 |
US4875909(A) |
申请公布日期 |
1989.10.24 |
申请号 |
US19870127488 |
申请日期 |
1987.12.01 |
申请人 |
NIPPON SHOKUBAI KASAKU KOGYO CO., LTD.;ATOCHEM |
发明人 |
KAKIMOTO, YUKIHIKO;SAWADA, MASAYUKI;KAJIMOTO, YOSHIAKI;KIGUCHI, DECEASED, ISAMU |
分类号 |
C07D301/32 |
主分类号 |
C07D301/32 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|