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    • 4. 发明授权
    • Isolation of 1,3-butadiene from a C4-hydrocarbon mixture
    • 从C4烃混合物中分离出1,3-丁二烯
    • US4277314A
    • 1981-07-07
    • US40283
    • 1979-05-18
    • Alfred LindnerKlaus VolkamerUlrich Wagner
    • Alfred LindnerKlaus VolkamerUlrich Wagner
    • C07C7/08C07C1/00C07C7/00C07C7/05C07C11/167C07C67/00B01D3/40
    • C07C7/005C07C7/05
    • A process for isolating 1,3-butadiene by means of a selective solvent from a C.sub.4 -hydrocarbon mixture which contains 1,3-butadiene, propyne, hydrocarbons which are more soluble than 1,3-butadiene in the selective solvent and hydrocarbons which are less soluble than 1,3-butadiene in the selective solvent, wherein the C.sub.4 -hydrocarbon mixture is separated, using one or more extractive distillation zones, into a distillate containing the less soluble hydrocarbons, a stream of 1,3-butadiene and a stream containing the more soluble hydrocarbons, and the propyne is separated off either by distillation of the C.sub.4 -hydrocarbon mixture in a distillation zone upstream of the extractive distillation zone or zones or by distillation of the stream of 1,3-butadiene, obtained from the extractive distillation zone or zones, in a downstream distillation zone, giving a stream of hydrocarbons containing propyne and 1,3-butadiene, which stream is fed to an additional distillation zone, while at the same time a second stream of liquid or gaseous hydrocarbons is fed to the additional distillation zone, and the bottom product from the additional distillation zone is recycled to the extractive distillation.
    • 通过选择性溶剂从含有1,3-丁二烯,丙炔,在选择性溶剂中比1,3-丁二烯更可溶的烃的C 4烃混合物分离1,3-丁二烯的方法和烃,其为 在选择性溶剂中比1,3-丁二烯更难溶解,其中使用一个或多个萃取蒸馏区将C4-烃混合物分离成含有较不溶性烃的馏出物,1,3-丁二烯流和流 含有较多的可溶性烃,丙炔通过在萃取蒸馏区或蒸馏区上游的蒸馏区中蒸馏出C4烃混合物,或通过蒸馏萃取物获得的1,3-丁二烯来分离。 蒸馏区或区域,在下游蒸馏区中,产生含有丙炔和1,3-丁二烯的烃流,该料流被供给到另外的蒸馏区,同时a 液体或气态烃的第二流进料到另外的蒸馏区,并且来自附加蒸馏区的底部产物被再循环至萃取蒸馏。
    • 10. 发明授权
    • Removal of condensable aliphatic hydrocarbons and acidic gases from
natural gas
    • 从天然气中去除可冷凝的脂族烃和酸性气体
    • US4414004A
    • 1983-11-08
    • US356721
    • 1982-03-10
    • Eckhart WagnerUlrich WagnerKlaus VolkamerWolfgang Vodrazka
    • Eckhart WagnerUlrich WagnerKlaus VolkamerWolfgang Vodrazka
    • B01D53/14C07C7/11C10G5/04
    • C10G5/04B01D53/1456B01D53/1487B01D53/1493C07C7/11C10G2300/1025
    • A process for removing condensable aliphatic hydrocarbons and acidic gases such as H.sub.2 S, CO.sub.2 and COS from natural gas containing these, wherein the natural gas is initially treated with polyethylene glycol dialkyl ethers, as the solvent, in a first absorption stage to effect absorption of the condensable aliphatic hydrocarbons; the natural gas drawn off from the first absorption stage is then treated with polyethylene glycol dialkyl ethers, as the solvent, under superatmospheric pressure in a second absorption stage, the acidic gases being completely or partly absorbed; the solvent charged with the condensable aliphatic hydrocarbons which is obtained from the first absorption stage is treated with water in an extraction stage, to form a hydrocarbon phase containing the condensable aliphatic hydrocarbons and an aqueous dialkyl ether phase, and the hydrocarbon phase is separated from the aqueous dialkyl ether phase. The solvent charged with acid gases which is obtained from the second absorption stage is regenerated by expansion and/or stripping in a regeneration stage and the regenerated solvent is recycled to the absorption.
    • 从含有这些的天然气中除去可冷凝的脂族烃和酸性气体如H 2 S,CO 2和COS的方法,其中在第一吸收阶段天然气首先用聚乙二醇二烷基醚作为溶剂处理,以实现吸收 可缩合的脂族烃; 然后在第二吸收阶段的超大气压下,用作为溶剂的聚乙二醇二烷基醚处理从第一吸收阶段排出的天然气,酸性气体被完全或部分吸收; 在萃取阶段用水处理从第一吸收阶段得到的可冷凝脂肪族烃的溶剂,形成含有可冷凝脂族烃和二烷基醚水相的烃相,将烃相与 二烷基醚相水相。 通过在再生阶段中的膨胀和/或汽提再生从第二吸收阶段获得的装有酸性气体的溶剂,并将再生的溶剂再循环至吸收。