发明授权
US07226527B2 Method for recovering crude 1,3-butadiene by extractive distillation from a C4 cut 有权
通过萃取蒸馏从C4馏分回收粗1,3-丁二烯的方法

Method for recovering crude 1,3-butadiene by extractive distillation from a C4 cut
摘要:
A process for recovering crude 1,3-butadiene from a C4 fraction by extractive distillation using a selective solvent in a dividing wall column (TK) in which a dividing wall (T) is arranged in the longitudinal direction of the column to form a first subregion (A), a second subregion (B) and a lower common column region (C) and which is preceded by an extractive scrubbing column (K) is proposed.
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