发明名称 |
PROCESS FOR THE SEPARATION OF BUTANES AND BUTENES BY EXTRACTIVE DISTILLATION |
摘要 |
For the separation of butanes and butenes by extractive distillation, a charge mainly containing butanes and butenes is contacted in an extractive distillation column under pressure with a polar solvent (e.g., dimethyl formamide), the butanes being collected at the head. The solvent containing the butenes passes into a second column under pressure, where the butenes are partly desorbed and collected at the head. The solvent still containing butenes is purified in a third column under atmospheric pressure and the solvent-containing vapor distillate thereof is returned, after compression, to the lower part of the second column.
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申请公布号 |
US5242550(A) |
申请公布日期 |
1993.09.07 |
申请号 |
US19920840976 |
申请日期 |
1992.02.26 |
申请人 |
INSTITUT FRANCAIS DU PETROLE |
发明人 |
ASSELINEAU, LIONEL;MIKITENLO, PAUL |
分类号 |
C07C7/08;C07C9/10;C07C11/08 |
主分类号 |
C07C7/08 |
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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