粗蒽精制工艺研究  

Technological Study of Refining of Crude Anthracene

作　　者：吕早生[1] 叶莉莉[1] 王李峰[1] 

机构地区：[1]武汉科技大学化学工程与技术学院,湖北武汉430081

出　　处：《化学与生物工程》2008年第10期12-15,共4页Chemistry & Bioengineering

基　　金：湖北省教委科研基金资助项目(2002A01015);湖北省科技厅自然科研基金项目(2003ABA076);湖北省教育厅大学企业合作基金项目(2003BC4)

摘　　要：在强极性溶剂N，N-二甲基甲酰胺（DMF）、非极性溶剂甲苯和辅助溶剂乙醇的三元混合溶剂体系中，采用萃取沉淀法从蒽含量（质量分数，下同）为38．78％的粗蒽中提取得到纯度〉90％的精蒽，回收率〉75％。当粗蒽：总溶剂（g：mL）在15：（25～45）之间时，得到的精蒽纯度为81．34％～94．66％，回收率为90．21％～64．53％；溶解温度在30～70℃时，得到的精蒽纯度为68．34％～94．31％，回收率为85．32％～78．24％；此外，混合溶剂中DMF的比例越高，精蒽的纯度会越高，V（DMF）：V（甲苯）为4：1时，精蒽纯度达到94．73％。在V（DMF）：V（甲苯）为2：1、粗蒽：总溶剂（g：mL）为15：35、溶解温度为70℃的最优条件下，可得到纯度为92；70％的精蒽，回收率为80．61％。With mixed solvent extraction and precipitation method, refined anthracene with purity of 90% and recovery of 〉75% could be obtained from crude anthracene whose mass fraction of anthracene was 38.78%,in the ternary mixtures of strong polar solvent DMF, non-polar solvent toluene and auxiliary solvent ethanol. When the proportion of crude anthracene and solvents （g ： mL） changed from 15 ： （25-45）, the purity of refined anthracene changed from 81.34% to 94. 66%, and the recovery changed from 90.21% to 64.53%. When the temperature changed from 30℃ to 70℃, the purity of refined anthracene changed from 68.34% to 94.31%, and the recovery changed from 85.32% to 78.24 % . In addition, The higher the proportion of DMF in the mixed solvents, the higher the purity of refined anthracene. Under the optimum conditions,including volume ratio of DMF to toluene of 2 ： 1 ,ratio of crude anthracene to total solvent （g ： mL） of 15 ： 35 and the temperature of 70℃ ,the refined anthracene was obtained with purity of 92.70% and the recovery of 80. 61%.

关 键 词：蒽 精制 溶剂 萃取 

分 类 号：TQ522.64[化学工程—煤化学工程]