高纯度双酚S的精制工艺研究  

Process for production of high-purity 4,4'-dihydroxydiphenylsulfone

作　　者：张天永[1,2,3] 朱佳佑[1] 李彬[1,2,4] 姜爽[1] 陈松[1,3] 王树华 

机构地区：[1]天津大学化工学院,天津300072 [2]天津市应用催化科学与工程重点实验室,天津300072 [3]天津市绿色橡胶助剂企业重点实验室(筹),天津300270 [4]大连理工大学精细化工国家重点实验室,辽宁大连116024 [5]科迈化工股份有限公司,天津300270

出　　处：《现代化工》2014年第2期113-116,共4页Modern Chemical Industry

基　　金：国家自然科学基金(21103121;21276187);教育部高等学校博士学科点专项科研基金(20110032120011);天津市应用基础与前沿技术研究计划(13JCQNJC05800);精细化工国家重点实验室开放基金(KF1101)

摘　　要：将双酚S粗品在氨水-活性炭体系中脱色提纯得到初精制产品,再置于苯甲醚溶剂中回流萃取去除异构体2,4'-二羟基二苯砜,得到高纯度精制产品。较好的工艺条件为:m(粗品)∶m(ω=3%氨水)=1∶10,m(粗品)∶m(糖用活性炭)=10∶1,搅拌脱色1 h,过滤后滤液酸析得初精制产品,纯度为98.30%,收率为88.4%;m(初精制产品)∶m(苯甲醚)=1∶20,回流搅拌1 h,降温过滤得精制产品,纯度为99.93%,收率为94.5%。该工艺精制产品纯度高,经济环保,操作简便,易于工业化。Crude 4,4＇-dihydroxydiphenylsulfone is decolored and purified by the ammonia-activated carbon system to obtain primary purified product.Then the primary purified product is refluxed and extracted in boiling anisole to remove isomer 2,4＇-dihydroxydiphenylsulfone to obtain the high-purity product.The improved process is applied as follow：1 ∶ 10 of m（crude product） ∶ m （ω =3％ ammonia）,10∶1 of m （crude product） ∶ m （activated carbon for sugar industry） and 1 hour of decoloration.Then the primary purified product is precipitated out by adding sulfuric acid to the filtrate after activated carbon is filtered off.The purity of primary product reaches 98.30％ and the yield is 88.4％.When the ratio of m （the primary purified product） and m （anisole） is 1 ∶ 20,and the mixture is stirred at refluxing temperature for 1 hour,the high-purity can be obtained by cooling and being filtered.The purity of final product can reach 99.93％ and the yield is 94.5％.The product purity obtained by the process is high.The improved process is relatively cost-effective and environmental benign,and is easy to be operated and industrialized.

关 键 词：双酚S 精制 氨水 活性炭 苯甲醚 

分 类 号：TQ612.1[化学工程—精细化工]