A system and a method for preparing cycloalkanone are provided. The method includes the steps of: (a) oxidizing cycloalkane to form a mixture containing ketone, alcohol and unreacted cycloalkane; (b) adding to the mixture alkali metal hydroxide or alkali metal carbonate to form a first mixed solution; (c) separating the first mixed solution into a first organic phase solution and a first aqueous phase solution; and (d) extracting the first organic phase solution by water to obtain a second organic phase solution and a second aqueous phase solution; and (e) distilling the second organic phase to separate out cycloalkanone. The method performs phase separation after a mixing step, and then performs water extraction, thereby effectively lowering the contents of the metal salts in the organic phases. Compared with acid-water extraction, the method not only provides better cooling effects but also reduces equipment corrosion, and therefore has the advantage of decreasing the need for sewage treatments.
提供了一种制备环烷酮的系统和方法。该方法包括以下步骤:(a) 氧化环
烷烃以形成含有酮、醇和未反应环
烷烃的混合物;(b) 向混合物中添加碱
金属氢氧化物或碱
金属
碳酸盐以形成第一混合溶液;(c) 将第一混合溶液分离为第一有机相溶液和第一
水相溶液;(d) 通过
水提取第一有机相溶液以获得第二有机相溶液和第二
水相溶液;和 (e) 蒸馏第二有机相以分离出环烷酮。该方法在混合步骤后执行相分离,然后进行
水提取,有效降低有机相中
金属盐的含量。与酸
水提取相比,该方法不仅提供更好的冷却效果,还减少了设备腐蚀,因此具有减少污
水处理需求的优势。