专利名称：PROCESS FOR PURIFYING ACRYLONITRILE 发明人：MONICAL, Valerie, S.,STEINMEYER, Daniel,
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E.,WARD, Gregory
申请号：EP97912812.0
申请日：19971017
公开号：EP0938469A1
公开日：
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摘要：PURPOSE: Provided are recovery and purification of acrylonitrile made by catalytic ammoxidation of propylene. CONSTITUTION: In a process for purifying acrylonitrile, an ammoxidation reactor effluent containing acrylonitrile and impurities is contacted in a quench system with an aqueous quench liquid; the improvement characterized in that the quench liquid contains less than 5000 ppm by weight high boiling organic compounds. In process for purifying acrylonitrile, the process compris contacting an ammoxidation reactor effluent containing acrylonitrile and impurities in a quench system with an aqueous quench liquid; removing a gaous effluent from the quench system and absorbing the gaous effluent in water in an absorption column to form an aqueous solution; feeding the aqueous solution to an extractive distillation column having a plurality of trays; introducing water above the feed point of the aqueous solution and performing an extractive distillation to produce an overhead stream containing acrylonitrile and a bottom stream containing water and impurities; feeding the bottom stream from the extractive distillation column to a stripper column containing a plurality of stripper trays, removing water and high boiling organic compounds as a bottom stream from the stripper column, removing a water containing distillate as an
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overhead stream from the stripper column, and recycling distillate water to the quench column, the improvement characterized in that the recycled distillate contains less than 5000 ppm by weight high boiling organic compounds.
申请人：Solutia Inc.
地址：10300 Olive Boulevard St. Louis, MO 63141 US
国籍：US
生蚝清洗方法代理机构：Kraus, Walter, Dr.
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