文献类型：期刊文献

中文题名：减压蒸馏处理对煤液化沥青基泡沫炭孔结构的影响

英文题名：Effects of Vacuum Distillation Treatment on Pore Structure of Coal Liquefaction Asphalt-based Carbon Foam

作者：张智淼[1];吴诗勇[1];李欢[1];吴幼青[1];黄胜[1];高晋生[1]

机构：[1]华东理工大学资源与环境工程学院能源化工系,上海200237

年份：2020

卷号：43

期号：3

起止页码：81

中文期刊名：煤炭转化

外文期刊名：Coal Conversion

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：国家自然科学基金资助项目(2197080732,21878096);国家重点研发专项项目(2018YFB0604602)。

语种：中文

中文关键词：煤沥青;减压蒸馏;族组成;泡沫炭;孔结构

外文关键词：coal tar pitch;vacuum distillation;group composition;carbon foam;pore structure

摘要：对煤沥青进行减压蒸馏处理进而发泡制备泡沫炭,探究了减压蒸馏温度对煤沥青的族组成、元素组成和热解性能以及对制得泡沫炭性能的影响。结果表明:减压蒸馏可以有效减少煤沥青中甲苯可溶物(TS),增加喹啉不溶物(QI),使煤沥青的n(C)∶n(H)增大、热稳定性增加。减压蒸馏后,泡沫炭的泡孔更加均匀,数量增加,孔径减小;煤沥青在减压蒸馏温度为335℃、压力为-0.095 MPa条件下蒸馏10 min,得到的沥青AS335 QI质量分数为98.06%,沥青AS335在发泡温度为450℃、压力为2 MPa条件下发泡2 h,得到泡沫炭的泡孔形状为椭圆形,孔径范围为130μm^540μm,平均孔径为320μm,总孔率为74.99%,质量密度为0.3646 g/cm3,压缩强度为5.47 MPa。在此条件下,泡沫炭的泡孔较均匀,孔型较好。
Coal tar pitch was subjected to vacuum distillation and then foamed to prepare carbon foam.The effects of vacuum distillation temperature on the group composition,elemental composition and pyrolysis performance of coal tar pitch and properties of carbon foam prepared from this coal tar pitch were studied.The result shows that vacuum distillation can effectively reduce the toluene solubles(TS)component,increase quinoline insoluble(QI)component,increase n(C)∶n(H)and thermal stability of the asphalt.After vacuum distillation,the pores of carbon foam prepared from the coal tar pitch are more uniform,the number of pore increases,and the pore size decreases.The coal tar pitch was distilled in the conditions of vacuum distillation temperature of 335℃and pressure of-0.095 MPa for 10 min to obtain asphalt AS335 with mass fraction of QI is 98.06%.Asphalt AS335 is foamed for 2 h in the conditions of foaming temperature of 450℃and pressure of 2 MPa.The cell shape of carbon foam is elliptical,with a pore size range of 130μm-540μm,an average pore size of 320μm,a total porosity of 74.99%and mass density of 0.3646 g/cm3 and compressive strength of 5.47 MPa.In this condition,carbon foam has relatively uniform pores and better pore shapes.