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    • 4. 发明授权
    • Continuous method for separating a C4 cut
    • 用于分离C4切割的连续方法
    • US07462277B2
    • 2008-12-09
    • US10521364
    • 2003-07-22
    • Till AdrianThomas HillKlaus KindlerBernd Heida
    • Till AdrianThomas HillKlaus KindlerBernd Heida
    • C10G11/08
    • C07C7/08B01D3/141B01D3/40C07C5/22Y02P20/127C07C9/10C07C11/08
    • In a continuous process for fractionating a C4 fraction (C4) 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 (C4H10) comprising the butanes is taken off from the first region (A), a top stream (C4H8) comprising the butenes is taken off from the second region (B) and a stream (C4H6) comprising the hydrocarbons from the C4 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).
    • 在采用萃取蒸馏塔(EDK)中使用选择性溶剂(LM)的萃取蒸馏法分馏C4馏分(C4)的连续方法中,提出了在提取物中纵向安装分隔壁(TW) 从第一区域(A)取出蒸馏塔(EDK)以形成第一区域(A),第二区域(B)和下部混合塔区域(C)以及包含丁烷的顶部流(C 4 H 10) 包含丁烯的顶流(C 4 H 8)从第二区域(B)和包含来自C4馏分的烃(C4H6)的流(C4H6)比丁烷和丁烯更可溶于选择性溶剂(LM) 从下组合柱区域(C)中取出。