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    • 35. 发明授权
    • Preparation of C5-/C6-olefins
    • 制备C5- / C6-烯烃
    • US06538168B1
    • 2003-03-25
    • US09610942
    • 2000-07-06
    • Peter SchwabMichael SchulzRalf SchulzSylvia Huber
    • Peter SchwabMichael SchulzRalf SchulzSylvia Huber
    • C07C602
    • C07C7/14891C07C7/005C07C7/10C07C7/163C07C11/06C07C11/10C07C11/107C07C2521/04C07C2521/08C07C2523/36Y02P20/52
    • A process for preparing C5/C6-olefins from an olefinic starting stream comprising C4-hydrocarbons comprises a) carrying out a metathesis reaction in the presence of a metathesis catalyst so as to convert the 1-butene, 2-butene and isobutene present in the starting stream into a mixture of C2-C6-olefins and butanes, b) firstly fractioning the resulting product stream by distillation to give a low boiler fraction A comprising C2-C4-olefins and butanes or C2-C3-olefins, which is discharged, and a high boiler fraction comprising C4-C8-olefins and butanes, c) fractioning the high boiler fraction from b) by distillation to give a low boiler fraction B comprising butenes and butanes, an intermediate boiler fraction C comprising pentene and methylbutene and a high boiler fraction D comprising hexane and methylpentene, d) where all or part of the fraction B and/or C are recirculated to the process step a) and the fraction D is discharged as product.
    • 从包含C 4烃的烯烃原料流制备C5 / C6-烯烃的方法包括:a)在复分解催化剂存在下进行复分解反应,以便转化起始中存在的1-丁烯,2-丁烯和异丁烯 流入C2-C6-烯烃和丁烷的混合物中,b)首先通过蒸馏对所得产物流进行分馏,得到包含C2-C4-烯烃和排出的丁烷或C2-C3-烯烃的低沸点馏分A,以及 包含C4-C8-烯烃和丁烷的高沸点馏分,c)通过蒸馏从b)中分馏高沸点馏分,得到包含丁烯和丁烷的低沸点馏分B,包含戊烯和甲基丁烯的中间锅炉馏分C和高锅炉 馏分D包括己烷和甲基戊烯,d)其中全部或部分馏分B和/或C再循环到方法步骤a),馏分D作为产物排出。