发明名称 |
Precooling for ethylene recovery in dual demethanizer fractionation systems |
摘要 |
Ethylene-containing feed gas to a cryogenic ethylene recovery system is cooled and condensed, prior to fractionation, by an improved method which utilizes a combination of one or more partial condensers followed by one or more dephlegmators. The improved method simplifies heat exchange equipment and reduces capital cost, and is particularly suited for processing a pressurized precooled feed gas from ethane cracking which contains less than about 1 mole % of propane plus propylene.
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申请公布号 |
US5361589(A) |
申请公布日期 |
1994.11.08 |
申请号 |
US19940191683 |
申请日期 |
1994.02.04 |
申请人 |
AIR PRODUCTS AND CHEMICALS, INC. |
发明人 |
HOWARD, LEE J.;ROWLES, HOWARD C. |
分类号 |
C07B63/00;C07C7/09;C07C11/04;C10G70/04;F25J3/02;(IPC1-7):F25J3/02 |
主分类号 |
C07B63/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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