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1.发明公开Process for removal of hydroxyacetone from phenol 审中-公开Verfahren zur Entfernung von Hydroxyaceton aus Phenol
公开(公告)号：EP1847522A1
公开(公告)日：2007-10-24
申请号：EP06007957.1
申请日：2006-04-18
发明人： Schnurr, Otto , Weber, Manfred , Weber, Markus
CPC分类号： C07C409/10 , C07C37/08 , C07C37/685 , C07C37/72 , C07C37/74 , C07C37/86 , C07C45/53 , C07C407/00 , C07C49/08 , C07C39/04
摘要： The present invention relates to method for producing phenol comprising:
a) oxidizing cumene to form an oxidation product containing cumene hydroperoxide;
b) cleaving said oxidation product using an acidic catalyst to form a cleavage product containing phenol, acetone and impurities;
c) neutralizing and washing said cleavage product with a basic aqueous medium to obtain a neutralized cleavage product;
d) separating said neutralized cleavage product by at least one distillation step into at least a phenol containing fraction and an aqueous fraction comprising hydroxyacetone;
e) treating said aqueous fraction with an oxidizing agent in presence of a base to obtain a basic aqueous medium reduced in hydroxyacetone;
f) recycling at least a portion of said basic aqueous medium to the neutralizing and washing step c); and
g) recovering phenol from said phenol containing fraction obtained in step d).摘要翻译： 本发明涉及生产苯酚的方法，包括：a）氧化枯烯以形成含有氢过氧化枯烯的氧化产物; b）使用酸性催化剂裂解所述氧化产物以形成含有苯酚，丙酮和杂质的裂解产物; c）用碱性水性介质中和洗涤所述裂解产物以获得中和的裂解产物; d）将所述中和的裂解产物通过至少一个蒸馏步骤分离成至少含苯酚的级分和包含羟基丙酮的水性级分; e）在碱的存在下用氧化剂处理所述含水级分以获得羟基丙酮还原的碱性水性介质; f）将至少一部分所述碱性水性介质再循环至中和和洗涤步骤c）; 和g）从在步骤d）中获得的所述含苯酚馏分中回收苯酚。
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公开(公告)号：EP1847523A1
公开(公告)日：2007-10-24
申请号：EP06007950.6
申请日：2006-04-18
发明人： Lohmer, Gunther , Schnurr, Otto , Weber, Manfred , Weber, Markus
摘要： The present invention relates to a continuous method for treating a crude phenol stream comprising methylbenzofuran and hydroxyacetone by passing the crude phenol stream through at least two reactors connected in series the reactors containing an acidic ion exchange resin, whereby the temperature in successive reactors decreases in flow direction of the phenol stream so that the temperature in the first reactor in flow direction of the phenol stream is between 100°C and 200°C and the temperature in the last reactor in flow direction of the phenol stream is between 50°C and 90°C without a thermal separation step between any of two successive reactors and to the use of this method in a process for making phenol.
摘要翻译： 本发明涉及通过将粗苯酚流通过至少两个连续串联含有酸性离子交换树脂的反应器的反应器来处理包含甲基苯并呋喃和羟基丙酮的粗苯酚流的连续方法，由此连续反应器中的温度降低流动 苯酚流的方向使得苯酚流的流动方向上的第一反应器中的温度在100℃和200℃之间，并且苯酚流的流动方向上的最后一个反应器中的温度在50℃和90℃之间 ℃，而没有两个连续反应器中的任一个之间的热分离步骤，以及在制备苯酚的方法中使用该方法。
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