摘要
简要介绍了１０ｋｇ／次煤焦油溶剂萃取分离系统的流程及特点，并在此萃取分离系统中考察了对煤焦油中２－４环芳香族化合物的分离效果．研究结果表明，用工业酒精∶焦油重量比约１∶１，转速为１５０ｒ／ｍｉｎ，每次搅拌３０ｍｉｎ，静置３０ ｍｉｎ，进行５次萃取分离，即可将煤焦油中的１－４环化合物完全萃取出，从而得到软化点达１１０℃的沥青，显示该系统具有较好的萃取分离效果．
The techno1ogical process and character of solvents extraction separation system self-designed of coal tar, which can extract coal tar 10 kg one-pot, were introduced in this paper. The separation effectiveness of 1-4 ring aromatic hydrocarbons from coal tar was examed using this system. The tests show that 1-4 ring aromatics can be completely extracted from coal tar by 5-6 times extraction using equivalent ethanol for industrial use as extraction solvent, obtaining coal tar pitch with soften point as high as 110 ℃.
出处
《煤炭转化》
CAS
CSCD
北大核心
2001年第4期13-15,共3页
Coal Conversion
基金
国家重点基础研究发展规划项目(G1999022101)
煤炭工业科技发展基金资助项目(97-312).
关键词
煤焦油
多环芳烃
溶剂萃取
分离系统
coal tar, polycyclic aromatic hydrocarbons, extraction, separation system
