煤系中间相沥青的制备与分离研究  

Preparation and separation of mesophase pitch from coal tar pitch

作　　者：孙鹏溟 赵雪飞[1] 赖仕全[1] 高丽娟[1] 

机构地区：[1]辽宁科技大学化学工程学院辽宁省先进煤焦化重点实验室辽宁省煤化工工程技术中心,辽宁鞍山114051

出　　处：《炭素技术》2015年第3期55-58,共4页Carbon Techniques

基　　金：国家自然科学基金(U1361126);教育部博士点基金(20132120110001);辽宁省教育厅创新团队资助项目(LT2010053);辽宁省煤化工工程技术中心开放基金(2013-05)

摘　　要：以精制煤焦油沥青为原料,采用常压热聚合法进行中间相转化。根据产物中中间相沥青与母体沥青之间的密度差,将中间相沥青分离出来。系统考察了热聚合温度和恒温停留时间对中间相沥青的收率、软化点、族组成和光学显微形态的影响,采用FT-IR分析技术分析了中间相沥青的官能团结构。实验结果表明:聚合温度430℃,聚合时间4 h,中间相沥青的软化点为316℃,w(QI)为74.62%,w(TI)为73.81%,收率为12.5%。The mesophase pitch was prepared from the refined coal tar pitch by thermal polymerization under normal pressure. According to the density difference between mesophase pitch and matrix pitch, the mesophase pitch in the product was separated out.The influence of thermal polymerization temperature and thermostatic residence time on the mesophase pitch yield, softening point,component and optical morphology were studied, and the functional groups of mesophase pitch was analyzed by FT-IR technique.The results indicated that the mesophase pitch with the softening point of 316 ℃, QI of 74.62%, TI of 73.81% and yield of 12.5%was obtained under the polymerization temperature of 430 ℃ for 4 h.

关 键 词：中间相沥青 热聚合 分离 

分 类 号：TQ522.65[化学工程—煤化学工程]