尿素-溴化钙联用分离制高纯度间甲酚  

High Purity m-Cresol Obtained by Combination of Urea and Calcium Bromide Method

作　　者：侯颖[1] 眭贤明 杨立荣[1] 吴坚平[1] 徐刚[1] 

机构地区：[1]浙江大学化工系,浙江杭州310027 [2]江苏康泰氟化工有限公司,江苏常州213200

出　　处：《化学反应工程与工艺》2011年第2期178-182,共5页Chemical Reaction Engineering and Technology

基　　金：国家重点基础研究发展计划资助(973计划,2011CB710800);国家自然科学基金重点项目(20936002);国家科技支撑计划重点项目(2008BAI63B07)

摘　　要：以物质的量之比为66.8:33.2的间甲酚和对甲酚的混酚为原料,采用尿素络合法分离间甲酚。以与间甲酚等物质的量的甲苯为溶剂,在尿素与间甲酚物质的量之比为1.4的条件下分离后,间甲酚回收率为65%,纯度为99%。采用溴化钙络合法对尿素法分离间甲酚所产生的废液进行再次分离,得到混酚原料,然后采用尿素法进一步分离,间甲酚的回收率可由65%提高至85%左右。The urea complex method was used to separate m-cresol from the mixture of m-cresol and p-cresol （molar ratio of m-cresol to p-cresol was 66.8：33.2）. The recovery of m-cresol reached 65% and the purity of m-cresol was above 99% when the molar ratio of urea to m-cresol was 1.4 and the same amount of toluene as m-cresol was used as solvent. The filtrate from above process was treated by calcium bromide method and was suitable for separation by the urea complex method. After being separated by the urea complex method again, the total recovery of m-cresol could increase from 65% to 85%.

关 键 词：间甲酚 尿素 澳化钙 

分 类 号：TQ028.8[化学工程]