发明名称 |
Continuous method for separating a c4 cut |
摘要 |
In a continuous process for fractionating a C<SUB>4 </SUB>fraction (C<SUB>4</SUB>) by extractive distillation using a selective solvent (LM) in an extractive distillation column (EDK), it is proposed that a dividing wall (TW) is installed in the longitudinal direction in the extractive distillation column (EDK) to form a first region (A), a second region (B) and a lower combined column region (C) and a top stream (C<SUB>4</SUB>H<SUB>10</SUB>) comprising the butanes is taken off from the first region (A), a top stream (C<SUB>4</SUB>H<SUB>8</SUB>) comprising the butenes is taken off from the second region (B) and a stream (C<SUB>4</SUB>H<SUB>6</SUB>) comprising the hydrocarbons from the C<SUB>4 </SUB>fraction which are more soluble in the selective solvent (LM) than are the butanes and the butenes is taken off from the lower combined column region (C).
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申请公布号 |
US2006021911(A1) |
申请公布日期 |
2006.02.02 |
申请号 |
US20050521364 |
申请日期 |
2005.01.14 |
申请人 |
ADRIAN TILL;HILL THOMAS;KINDLER KLAUS;HEIDA HERND |
发明人 |
ADRIAN TILL;HILL THOMAS;KINDLER KLAUS;HEIDA HERND |
分类号 |
C10G11/08;B01D3/40;C07C5/22;C07C7/08 |
主分类号 |
C10G11/08 |
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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