副产硫磺提纯技术的开发与应用  

Development and Application of Purification Technology for By-product Sulfur

作　　者：郑茂红 李惠跃 章建新 路培超 孟祥利 ZHENG Mao-hong;LI Hui-yue;ZHANG Jian-xin;LU Pei-chao;MENG Xiang-li(Zhejinag Avilive Chemical Co.,Ltd.,Jinhua,Zhejiang 322118,China;Shandong Avilive Chemical Co.,Ltd.,Linyi,Shandong 270026,China)

机构地区：[1]浙江埃森化学有限公司,浙江金华322118 [2]山东埃森化学有限公司,山东临沂270026

出　　处：《浙江化工》2020年第1期8-13,共6页Zhejiang Chemical Industry

摘　　要：研究了一种新的乙基氯化物副产硫磺的提纯方法,采用溶解、中和、萃取分层、重结晶、过滤、脱溶、精馏的方法,提纯副产硫磺。比较合适的工艺条件是:溶剂采用二甲苯,中和剂采用液碱,溶解温度控制在100℃~110℃,结晶温度控制在0℃~5℃,溶剂循环次数为5次,经处理后的硫磺含量大于99.0%,符合国标合格品要求。A new purification method of by-product sulfur from O,O-diethyl chlorothiophosphate.The by-product sulfur was purified by means of dissolution,neutralization,extraction,stratification,recrystallization,filtration,desolution and distillation.The appropriate technological conditions were as follows:dimethylbenzene as solvent,liquid caustic soda as neutralizer,dissolution temperature was controlled at 100℃~110℃,crystallization temperature was controlled at 0℃~5℃,the number of solvent cycles was 5 times.After treatment,the sulfur content is more than 99.0%,agreeing with the requirements of the national standard for qualified products.

关 键 词：乙基氯化物 副产硫磺 提纯 溶剂 二甲苯 

分 类 号：TQ125.11[化学工程—无机化工]