The separation of quinoline insolubles from the coal tar pitch as raw material by solutioning in coking solvent, filtration and rectification, etc., purification process was describled.

• 介绍了以煤焦油沥青为原料，采用焦化溶剂溶解、过滤和精馏等净化工艺，分离其中的喹啉不溶物。