聚碳级双酚A结晶精制过程的研究  

Process of preparing PC-grade bisphenol A by crystallization

作　　者：张宗礼[1] 吕惠生[1] 肖观秀[1] 李永辉[1] 

机构地区：[1]天津大学石油化工技术开发中心,天津300072

出　　处：《化学工程》2005年第6期14-17,共4页Chemical Engineering(China)

基　　金：中石化委托研发项目(401079)

摘　　要：研究了以甲苯为溶剂,从双酚A-苯酚的加合物晶体中,用结晶方法制备双酚A的精制工艺,讨论了加合物晶体中苯酚的质量分数、结晶终温、结晶时间、溶剂比对双酚A的结晶收率、产品熔点和产品色号的影响,得出了用甲苯溶剂结晶法从加合物晶体中提纯具有特殊用途的聚碳级双酚A晶体的适宜工艺条件为溶剂摩尔比0∶1,结晶终温38℃,结晶时间190 m in。The technological process of purifying bisphenol A from the adducts crystal of bisphenol A-phenol by crystallization with toluene as solvent was studied. The effect of mass fraction of phenol in adducts crystal, terminal crystallizing temperature, crystallizing period and the ratio of solvent on the yield of bisphenol A, the melt point of bisphenol A and the color sign was discussed. The suitable technological conditions of purifying PC-grade bisphenol A from the adducts crystal with crystallization process were gained, i.e. solvent ratio 2. 0： 1, final crystallizing temperature 38℃ crystallizing period 190min.

关 键 词：双酚A 苯酚 加合物晶体 甲苯 溶剂结晶法 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]