Recovery and purification of 3,4-epoxy-1-butene
    1.
    发明授权
    Recovery and purification of 3,4-epoxy-1-butene 失效
    3,4-环氧-1-丁烯的回收和纯化

    公开(公告)号:US06395913B1

    公开(公告)日:2002-05-28

    申请号:US09910359

    申请日:2001-07-20

    IPC分类号: C07D30132

    CPC分类号: C07D301/32 C07D301/10

    摘要: Disclosed is a method of recovering and purifying 3,4-epoxy-1-butene (epoxybutene) from a reaction product gas, obtained by the vapor phase catalytic partial oxidation of 1,3-butadiene with oxygen over a silver catalyst. The recovery and purification comprises absorption of the epoxybutene into a water-miscible solvent followed by separation of the absorbed epoxybutene from the absorbent by extraction into a water-immiscible solvent. A method of recovering and purifying epoxybutene from the extraction solvent and other reaction by-products by a novel combination of distillation and decantation steps also is disclosed.

    摘要翻译: 公开了一种通过在银催化剂上用氧气气相催化部分氧化1,3-丁二烯而获得的反应产物气体中3,4-环氧-1-丁烯(环氧丁烯)的回收和纯化方法。 回收和纯化包括将环氧丁烯吸收到水混溶性溶剂中,然后通过萃取与水不混溶的溶剂将吸收的环氧丁烯从吸收剂中分离出来。 公开了一种通过蒸馏和倾析步骤的新组合从提取溶剂和其它反应副产物中回收和纯化环氧丁烯的方法。