发明名称 |
RECOVERY OF ETHYLENE FROM METHANOL TO OLEFINS PROCESS |
摘要 |
Olefins may be recovered from a methanol to olefins reactor effluent by initially feeding the effluent to an absorber demethanizer to contact the effluent with an absorbent to recover an overheads including methane and ethylene and a bottoms including the absorbent, ethylene, and ethane. The bottoms are separated to recover an ethylene fraction and an ethane fraction. The overheads are cooled and partially condensed in a first heat exchanger to a temperature of -40°C or greater. The resulting stream, or a portion thereof, may be further cooled and condensed via indirect heat exchange with a mixed refrigerant to a temperature of less than -40°C. The non-condensed vapors are separated from the condensed liquids to form a liquid fraction and a methane fraction. The liquid fraction is fed to the absorber demethanizer as reflux, and the methane and ethane fractions combined to form the mixed refrigerant. |
申请公布号 |
WO2014077998(A1) |
申请公布日期 |
2014.05.22 |
申请号 |
WO2013US65042 |
申请日期 |
2013.10.15 |
申请人 |
LUMMUS TECHNOLOGY INC. |
发明人 |
KUZMA, PETER DANIEL, JR.;DE HAAN, STEPHEN;BAUMBACH, DANIEL LEE |
分类号 |
C07C7/04;C07B63/00;C07C7/12;C07C9/06;C07C11/04 |
主分类号 |
C07C7/04 |
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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