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1. 发明申请

WO1993005005A1 ACETOPHENONE REMOVED FROM PHENOL PURIFICATION RESIDUES 审中-公开
标题翻译：从酚醛清除剂中除去乙炔
公开(公告)号：WO1993005005A1
公开(公告)日：1993-03-18
申请号：PCT/US1992007310
申请日：1992-08-28
申请人： ALLIED-SIGNAL INC.
发明人： ALLIED-SIGNAL INC. , CHAN, Chong, Hui , CRESCENTINI, Lamberto , HINTON, Everett, Hawthorne, Jr. , BALINT, Laszlo, Joseph +di
IPC分类号： C07C37/80
CPC分类号： C07C45/82 , C07C37/685 , C07C37/74 , Y10S203/20 , C07C49/78 , C07C39/04
摘要： In a process for separating phenol obtained by the decomposition of cumene hydroperoxide from high boiling impurities, the improvement comprising: a) feeding phenol rectification bottoms comprising phenol, acetophenone, cumylphenol, alpha-methylstyrene dimers and high boiler residues to a first phenol freeing distillation column A; b) feeding concentrated bottoms with substantially reduced phenol content from column A to a second residue concentration distillation column B; c) withdrawing a stream rich in compounds boiling between phenol and residue, particularly cumylphenol, from said column B from a point below the feed and returning at least a portion of said stream to said column A at a point above the feed; d) recovering overheads from column A comprising at least 95 weight percent phenol; and e) recovering acetophenone-rich overheads from column B comprising at least 70 weight percent acetophenone.
摘要翻译：在通过氢过氧化枯烯分解得到的苯酚从高沸点杂质中分离的方法中，改进包括：a）将苯酚，苯乙酮，枯基苯酚，α-甲基苯乙烯二聚体和高锅炉残余物的苯酚精馏塔底物送入第一酚释放蒸馏塔一个; b）将具有基本上降低的苯酚含量的浓缩塔底物从塔A进料到第二残余物浓缩蒸馏塔B; c）在进料下方从所述柱B中取出富含苯酚和残留物之间沸腾的化合物特别是枯基苯酚的物流，并将至少一部分所述物流返回到所述塔A上方的一点; d）从包含至少95重量％苯酚的塔A回收塔顶馏出物; 和e）从包含至少70重量％苯乙酮的柱B回收富含苯乙酮的塔顶馏出物。

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