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    • 1. 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。
    • 2. 发明授权
    • Method for working up crude 1,3-butadiene
    • 处理粗1,3-丁二烯的方法
    • US07393992B2
    • 2008-07-01
    • US10522194
    • 2003-07-23
    • Thomas HillKlaus KindlerBernd Heida
    • Thomas HillKlaus KindlerBernd Heida
    • C07C7/08
    • C07C7/08Y02P20/127C07C11/167C07C11/08
    • Sudstituted the abstract with a new abstract as follows: The invention relates to a continuous process for separation a mixture of hydrocarbons which has beenobtained by extractive distillation of C4 fraction useing a selective solvent and the hydrocarbons from the fraction C4 which are more readily soluble in the selective solvent than are the butanes and the butenes. The mixture is fed into a first distillation column in which it is separated into a steam which is taken off at the top and comprises 1,3-butadiene, propyne, possibly further low boilers and possibly water and a bottom stream comprising 1,3-butadiene, 1,2-butadiene, acetylenes and possibly further high boilers, with the proportion of 1,3-butadiene in the bottom stream from the distillatin column being regulated in such a way that it is at least sufficiently high to dilute the acetylenes to outside the range in which there is a risk of spontaneous decomposition. The stream taken off from the top of the first distillation column is fed to a second distillation column and is separated into a steam which is taken off at the top and comprises propyne, possibly further low boilers and possibly water and a bottom stream comprising pure 1,3-butadiene in the second distillation column.
    • 摘要摘要摘要如下:本发明涉及一种使用选择性溶剂萃取蒸馏得到的烃混合物和来自馏分的烃分离的连续方法 其比丁烷和丁烯更容易溶于选择性溶剂。 将混合物进料到第一蒸馏塔中,其中它被分离成蒸汽,其在顶部被除去,并且包含1,3-丁二烯,丙炔,可能还有更低的锅炉和可能的水, 丁二烯,1,2-丁二烯,乙炔和可能更高的锅炉,来自蒸馏塔的塔底物流中的1,3-丁二烯的比例被调节,使得至少足以使乙炔稀释至 在有自发分解风险的范围之外。 从第一蒸馏塔的顶部排出的料流被供给到第二蒸馏塔,并被分离成蒸汽,该蒸汽在顶部被除去,并且包含丙炔,可能还有更低的低锅炉和可能的水以及包含纯的1 在第二蒸馏塔中的3-丁二烯。