高校化学工程学报2024，Vol.38Issue(4)：586-597,12.DOI:10.3969/j.issn.1003-9015.2023.00.008
中低温煤焦油在不同氢初压下重质组分组成结构的变化规律
The variation of composition and structure of heavy components of medium and low temperature coal tar under different initial hydrogen pressures
摘要
Abstract
Heavy components such as asphaltenes have a great influence on the hydrogenation conversion of medium-low temperature coal tar.In order to clarify the composition and structure of heavy components during the hydrogenation process of medium-low temperature coal tar,an improved four-component separation method was used to investigate the hydrogenation conversion of heavy components of coal tar under different hydrogen initial pressures from the perspectives of component content,heteroatom distribution and evolution mechanism of polar functional groups.The results showed that with the increase of hydrogen initial pressure,the component content,relative molecular mass and heteroatom content,hydrogen bond functional group and C—O group content of asphaltene and resin decreased and the molar ratio of H to C increased gradually.Compared with resins,asphaltenes had higher heteroatom content and more complex surface heteroatoms to remove difficultly.In addition,the content and distribution of characteristic functional groups in heavy components prove that hydrogen bonds and acid-base interactions caused by heteroatoms are the main forces for the association of heavy components in coal tar.关键词
重质组分/氢初压/组成结构/加氢转化Key words
heavy component/hydrogen initial pressure/composition structure/hydroconversion分类
化学化工引用本文复制引用
刘涛,金喆,于福帅,何婷,田丰,刘姣姣,崔楼伟,李冬..中低温煤焦油在不同氢初压下重质组分组成结构的变化规律[J].高校化学工程学报,2024,38(4):586-597,12.基金项目
国家自然科学基金(21978237) （21978237）
陕西省自然科学基础研究计划(2021JLM-19) （2021JLM-19）
陕西省创新能力支撑计划(2020TD-028) （2020TD-028）
陕煤-秦岭基础科学研究行动计划(SMY.TY20220130). （SMY.TY20220130）
