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CN101421212B 从酚中除去羟基丙酮的方法 有权

从酚中除去羟基丙酮的方法
摘要：
本发明涉及生产酚的方法，其包括：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酚、丙酮和杂质的裂解产物；c)使用碱性水介质中和并洗涤所述裂解产物以获得中和的裂解产物；d)通过至少一个蒸馏步骤将所述中和的裂解产物分离成至少含酚馏分和包含羟基丙酮的含水馏分；e)在存在碱的条件下，使用氧化剂处理所述含水馏分以获得羟基丙酮减少的碱性水介质；f)将至少一部分所述碱性水介质再循环至所述中和并洗涤步骤c)；和g)从在步骤d)中获得的所述含酚馏分中回收酚。
摘要（英）：

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).

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