复合溶剂液-液相萃取分离煤焦油中酚类物质工艺研究  

Study of Phenolic Compounds from Coal Tar Via LLE Separation Using Compound Solvent

作　　者：任海伦 王启超 李伟宏 Ren Hailun;Wang Qichao;Li Weihong(Tianjin Ren'ai College,Tianjin,301636;The Yellow River Delta Chambroad Institute Co.,Ltd.,Shandong,256600;Tianjin Shuang'an Safety Rubber Co.,Ltd.,Tianjin,300221)

机构地区：[1]天津仁爱学院,天津301636 [2]黄河三角洲京博化工研究院有限公司,山东256600 [3]天津双安劳保橡胶有限公司,天津300221

出　　处：《当代化工研究》2022年第17期1-5,共5页Modern Chemical Research

摘　　要：酚类化合物广泛应用于化工领域。传统工艺中使用强酸和强碱从煤焦油中提取酚类化合物,对环境危害较大。本研究在对复合溶剂(环己烷-二乙二醇-水)体系对苯酚-正十一烷-萘模拟组分的LLE(液-液相萃取)数据实验研究基础上,开展了复合溶剂对煤焦油中酚类化合物萃取效果的连续性实验验证。结果表明:复合溶剂体系(环己烷-二乙二醇-水)煤焦油中分离酚类化合物是可行的,其适宜操作工艺条件为:操作温度80℃、操作压力110kPa、溶剂比2.5、理论板数5以及复合溶剂(环己烷、二乙二醇、水)的质量比为10:85:5,该条件下苯酚和萘的萃取率达99.5%和99.0%。Phenolic compounds are widely used in chemical industry.The traditional process,which uses strong acid and alkaline to extract phenolic compounds from coal tar,is harmful to the environment.Based on LLE (Liquid-Liquid extraction) data of phenol-n-undecane-naphthalene,continuous experimental verification was carried out.The results show that it is feasible to separate phenolic compounds from coal tar with the compound solvent (cyclohexane-diethylene glycol-water).The optimum conditions are as follows:operating temperature is 80 ℃,operating pressure is 110 kPa,solvent ratio is 2.5,theoretical stages are 5 and mass ratio of composite solvent (cyclohexane:diethylene glycol:water) is 10:85:5,and the removal efficiencies of phenol and naphthalene are 99.5% and 99.0%,respectively.

关 键 词：复合溶剂 煤焦油 萃取 二乙二醇 

分 类 号：O642.42[理学—物理化学]