燃料化学学报（中英文）2025，Vol.53Issue(6)：819-826,8.DOI:10.3724/2097-213X.2025.JFCT.0003
不同氢源作用下煤直接液化过程的自由基反应行为研究
Investigation on free radicals reaction behaviors during direct coal liquefaction under different hydrogen donating conditions
摘要
Abstract
In order to elucidate the mechanism of direct coal liquefaction,the product distributions and free radicals reaction behaviors under different hydrogen donating conditions was investigated,and the correlation between product yields and free radical concentrations was established.The results indicated that the free radicals reaction behaviors were influenced by the interaction of solvent properties,atmosphere and catalyst activity,etc.The yields of residue and asphaltene correlated significantly with free radical concentrations,with an approximate positive trend under all three hydrogen donating conditions,but with notable differences in trends.When the activated hydrogen from solvent or H2,the oil and water yields exhibited a negative correlation with the free radical concentration of asphaltenes.In contrast,when activated hydrogen from solvent and H2,the oil and water yields showed a positive correlation with free radical concentration of asphaltene.At the same free radical concentration of asphaltene,the oil and water yields followed the order of:activated hydrogen from solvent and H2＞activated hydrogen from solvent＞activated hydrogen from H2.Activated hydrogen from solvent can effectively stabilized the macromolecular free radicals generated from coal pyrolysis to produce asphaltene,and to promote the conversion of asphaltene into oil and water.Conversely,gaseous hydrogen exhibited relatively weak ability to stabilize free radicals generated by coal and to promote the conversion of asphaltenes to oil and water.The activated hydrogen from solvent and H2 demonstrated a significant synergistic effect,enhancing the conversion of coal into oil,gas and water.关键词
煤直接液化/自由基/供氢溶剂/缩聚反应Key words
direct coal liquefaction/free radicals/hydrogen-donating solvents/condensation分类
化学工程引用本文复制引用
田佳欣,张园林,陈海涛,黄胜,吴诗勇,吴幼青,高晋生..不同氢源作用下煤直接液化过程的自由基反应行为研究[J].燃料化学学报（中英文）,2025,53(6):819-826,8.基金项目
The project was supported by National Key R&D Program of China(2022YFB4101300)and National Natural Science Foundation of China(22378129). 国家重点研发计划(2022YFB4101300)和国家自然科学基金(22378129)资助 （2022YFB4101300）
