Process for recovering 3,4-epoxy-1-butene
    9.
    发明授权
    Process for recovering 3,4-epoxy-1-butene 有权
    回收3,4-环氧-1-丁烯的方法

    公开(公告)号:US6018061A

    公开(公告)日:2000-01-25

    申请号:US305679

    申请日:1999-05-05

    CPC分类号: C07D303/04

    摘要: A process for recovering 3,4-epoxy-1-butene from a vapor phase catalytic oxidation reactor effluent where 1,3-butadiene is reacted with oxygen over a silver catalyst, the process includes the steps of contacting the reactor effluent with an absorbent in an absorber and vaporizing in the absorber an effective amount of a non-reactive coolant to cool the absorber to a temperature of less than about 40.degree. C. and a pressure of less than about 4 bar. Advantageously, the vaporization of the non-reactive coolant proximate to the absorber allows the absorber to be operated at lower temperatures and pressures than heretofore possible and provides a further advantage of allowing higher O.sub.2 concentrations in the feed to the epoxidation reactor.

    摘要翻译: 从气相催化氧化反应器流出物中回收3,4-环氧-1-丁烯的方法,其中1,3-丁二烯与氧在银催化剂上反应,该方法包括使反应器流出物与吸收剂接触的步骤 吸收器并在吸收器中蒸发有效量的非反应性冷却剂以将吸收器冷却至小于约40℃的温度和小于约4巴的压力。 有利地,靠近吸收器的非反应性冷却剂的蒸发允许吸收器在比迄今可能的更低的温度和压力下操作,并且提供允许进入环氧化反应器的进料中更高的O 2浓度的另外的优点。