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    • 5. 发明申请
    • Method For Producing Propene From 2-Butene And Isobutene-Rich Feeding Flows
    • 从2-丁烯和异丁烯丰富的进料流中生产丙烯的方法
    • US20080200745A1
    • 2008-08-21
    • US11817250
    • 2006-02-24
    • Marcus SiglMarkus SchubertJurgen StephanFrank Poplow
    • Marcus SiglMarkus SchubertJurgen StephanFrank Poplow
    • C07C2/00
    • C07C11/02C07C6/04C07C2521/04C07C2523/30C07C2523/36Y02P30/464
    • Process for preparing a stream consisting essentially of ethene (stream C2=), a stream consisting essentially of propene (stream C3=), a stream consisting essentially of isobutene and possibly other olefins having 4 carbon atoms (stream C4=) and a stream consisting essentially of 2-methyl-2-butene and possibly 2-butene (stream C5=), and, if appropriate, a stream which comprises other hydrocarbons (stream Cx) and may consist of a plurality of separate substreams, which comprises a metathesis step in which a C4-hydrocarbon stream comprising at least 15% by weight of 2-butenes, at least 5% by weight of isobutene and not more than 5% by weight of 1-butene (feed stream) is brought into contact with ethene in the presence of a customary metathesis catalyst and the resulting hydrocarbon stream is fractionated to give the streams C2=, C3=, C4= and, if appropriate, Cx and all or part of the stream C5= is recirculated to the metathesis step.
    • 用于制备基本上由乙烯(料流C 2 H 2)组成的料流的方法,基本上由丙烯(料流C 3 H 3) =基本上由异丁烯和可能的具有4个碳原子的其它烯烃(流C 4 H 4)组成的料流)和基本上由2-甲基 -2-丁烯和可能的2-丁烯(流C 5 H 5),以及如果合适的话,包含其它烃(流C 1 H 2 O) SUB>),并且可以由多个单独的子流组成,其包括复分解步骤,其中包含至少15重量%的2-丁烯的C 4 - 烃烃流,至少5%的 在常规复分解催化剂的存在下,异丁烯的重量和不超过5%(重量)的1-丁烯(进料流)与乙烯接触,并将所得烃流分馏,得到料流C 2, / SUB> = ,C 3 = 并且如果合适的话,C> x>和全部或部分流C< 5>< / SUP>再循环到复分解步骤。