煤焦油热解制备中间相炭微球  

PREPARATION OF MESOCARBON MICROBEADS FROM COAL TARS

作　　者：吕永根[1] 凌立成[1] 吴东[1] 刘朗[1] 张碧江[1] 

机构地区：[1]中国科学院山西煤炭化学研究所

出　　处：《燃料化学学报》1998年第5期463-467,共5页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金

摘　　要：含有３．７％吡啶不溶物的煤焦油和经热过滤去除吡啶不溶物的净化焦油在自升压下聚合，产物经热过滤去除母液，滤饼用吡啶抽提至无色得中间相炭微球。在偏光显微镜下观察聚合产物的结构，在扫描电镜下观察中间相炭微球的形貌。结果表明，由于聚合产物粘度较低，所产生的ＭＣＭＢ易于从母液中分离出来；原料中的吡啶不溶物有利于阻止ＭＣＭＢ的融并，在一定程度上可起到控制球径的作用；对无吡啶不溶物煤焦油高温短时间聚合后骤冷有利于阻止中间相炭微球的融并。A coal tar with 3 7% PI and its refined tar by heating filtration were polymerized in a sealed reactor The polymerizates were filtered at 150℃ to remove the matrix, and the residues were extracted by pyridine in Soxhelt apparatus The polymerizates and MCMB or secondary PI were observed respectively under a polarized optical microscope and a SEM microscope The crystalline parameters of the MCMB were examined by XRD

关 键 词：煤焦油 中间相炭微球 热解 MCMB 制备 

分 类 号：TQ522.63[化学工程—煤化学工程]