燃料化学学报2017，Vol.45Issue(11)：1281-1288,8.
吡啶萃取对烟煤热解过程焦油生成特性的影响
Effect of pyridine extraction on the tar characteristics during pyrolysis of bituminous coal
摘要
Abstract
Extensive research has shown that coal has an extractable small molecular compound, which was associated with non-covalent bonding coal molecules. In addition, the reactivity of coal extract and residue is different. In this work, a bituminous coal was acid washed and extracted by pyridine to destroy the electrostatic interactions and hydrogen bonds. The pyrolysis behavior of the extracts and residue was studied by thermogravimetry ( TG) and a fixed bed reactor. The H/C atomic ratio for the pyridine extract was significantly higher than that of raw coal, indicating hydrogen-rich components. The pyridine extract ( E1 ) gave a higher tar yield of 44. 41%, as well as more gas, while the tar yield of residue (R1) was lower than raw coal in an N2 atmosphere. However, the residue gave more than two times the amount of tar under H2 than that of N2 because developed porous structure was formed by pyridine extraction, which would facilitate hydrogen diffusion into the pore structure and reduce the polycondensation reaction.关键词
煤/萃取/热解/焦油/非共价键Key words
coal/extraction/pyrolysis/tar/non-covalent bonding分类
化学化工引用本文复制引用
骆安琪,张丹,朱平,曲旋,张金利,张建树..吡啶萃取对烟煤热解过程焦油生成特性的影响[J].燃料化学学报,2017,45(11):1281-1288,8.基金项目
The project was supported by the National Natural Science Foundation of China (21566033, 21106087) and the Start-Up Foundation for Young Scientists of Shihezi University (rczx201013).国家自然科学基金(21566033, 21106087)和石河子大学高层次人才科研启动资金专项(rczx201013)资助 （21566033, 21106087）
