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    • 42. 发明授权
    • Process for producing diisopropyl ether from propane
    • 从丙烷生产二异丙醚的方法
    • US5750800A
    • 1998-05-12
    • US556117
    • 1995-11-09
    • Terry L. MarkerBrian S. MuldoonBryan K. GloverBipin V. Vora
    • Terry L. MarkerBrian S. MuldoonBryan K. GloverBipin V. Vora
    • C07C5/333C07C41/05C07C41/00
    • C07C41/05C07C5/333Y02P20/125
    • An integrated process to produce diisopropyl ether from propane has been developed. In a first reaction zone the propane in a feedstock, after any hydrocarbons containing four or more carbon atoms are removed from the feedstock via fractionation, is dehydrogenated in the presence of a dehydrogenation catalyst to form propylene. After removing hydrogen, the propane and propylene mixture generated in the first reaction zone is separated into a propane enriched stream and a propylene enriched stream where the propylene enriched stream contains at least 65 mass % propylene. The propane enriched stream is recycled to the feedstock fractionation unit, and the propylene of the propylene enriched stream is reacted with water in a second reaction zone in the presence of an acidic catalyst to form isopropyl alcohol which is concurrently reacted with propylene to produce diisopropyl ether. A portion of the second reaction zone effluent is recycled to the second reaction zone, and the remainder may be collected or further separated to provide a high purity diisopropyl ether product. A variant to produce high purity propylene as well as diisopropyl ether is also discussed.
    • 已经开发了从丙烷生产二异丙醚的综合方法。 在第一反应区中,原料中的丙烷在含有四个或更多个碳原子的烃通过分馏从原料中除去后,在脱氢催化剂存在下脱氢形成丙烯。 除去氢气后,在第一反应区产生的丙烷和丙烯混合物分离成富丙烷流和富丙烯流,其中富含丙烯的料流含有至少65质量%的丙烯。 将富丙烷流再循环至原料分馏装置,在酸性催化剂存在下,使丙烯富集物流的丙烯与第二反应区中的水反应形成异丙醇,同时与丙烯反应产生二异丙醚 。 第二反应区流出物的一部分再循环至第二反应区,其余部分可以被收集或进一步分离以提供高纯度的二异丙醚产物。 还讨论了生产高纯度丙烯以及二异丙基醚的变体。