Process for producing propylene and hexene from C4 olefin streams
    1.
    发明公开
    Process for producing propylene and hexene from C4 olefin streams 审中-公开
    Verfahren zur Herstellung von Propylen und Hexen aus C4-Olefinströmen

    公开(公告)号:EP2157071A2

    公开(公告)日:2010-02-24

    申请号:EP09014595.4

    申请日:2003-03-07

    IPC分类号: C07C6/04

    摘要: A C 3 to C 6 hydrogen cut from a cracking unit is processed for the conversion of olefins to propylene and hexene via autometathesis. The autometathesis (16) of a mixed normal butenes feed (10) in the presence of a metathesis catalyst operates without any ethylene in the feed mix to the metathesis reactor. Some fraction of the 2-butene feed may be isomerized to 1-butene and the 1-butene formed plus the 1-butene in the feed react rapidly with the 2-butene to form propylene and 2-pentene. The feed to the reactor also includes the recycle of the 2-pentene (14) formed in the reactor with unreacted butenes to simultaneously form additional propylene and hexene. Some or all (34) of the 3-hexene (26) formed in the reaction is isomerized to 1-hexene (46). In one embodiment, some portion (72) of the 3-hexene (26) produced in the main metathesis reaction is reacted with ethylene to produce 1-butene (96) without the need for superfractionation.

    摘要翻译: 处理从裂化装置切割的C 3至C 6氢气,以通过自动化将烯烃转化为丙烯和己烯。 在复分解催化剂存在下,混合的正丁烯进料(10)的自动化(16)在进料混合物中没有任何乙烯运行到复分解反应器。 2-丁烯进料的一部分可以异构化为1-丁烯,并且进料中形成的1-丁烯加上1-丁烯与2-丁烯快速反应形成丙烯和2-戊烯。 反应器的进料还包括在反应器中形成的2-戊烯(14)与未反应的丁烯循环,以同时形成另外的丙烯和己烯。 在反应中形成的3-己烯(26)中的一些或全部(34)异构化为1-己烯(46)。 在一个实施方案中,在主复分解反应中产生的3-己烯(26)的一部分(72)与乙烯反应以生产1-丁烯(96),而不需要超分级。