燃料化学学报（中英文）2024，Vol.52Issue(4)：525-535,11.DOI:10.1016/S1872-5813(23)60393-7
TG-FTIR研究煤油共热解产物逸出行为
TG-FTIR study on escape behavior of products from co-pyrolysis of coal and residuum
摘要
Abstract
Coal and residuum are first co-pyrolyzed,and then hydrogenated into small molecule products during co-liquefaction.Therefore,clarifying influence of residuum on coal pyrolysis performance is an important thermochemical basis for regulating the process.The co-pyrolysis behavior of atmospheric residuum(AR)and Naomaohu coal(NMH)were investigated by TG,TG-FTIR and distributed activation energy model.The results showed that the peak temperature of the maximum rate of weight loss for the co-pyrolysis process was reduced by 7 ℃ compared with the theoretical value calculated by weighted average of AR and NMH pyrolysis alone,while the weight loss increased by 3％,the average activation energy decreased by 23.6 kJ/mol.In addition,the peak area of alkyl O-containing functional groups such as alcohols and ethers increased,whereas those of CO and CO2 decreased,suggesting that AR had a positive effect on NMH pyrolysis.Meanwhile,alkyl radicals from AR decomposition would combine with O-containing radicals generated from coal pyrolysis,thus resulting in a decrease of CO and CO2 by inhibiting breakage of carboxyl groups.This work will provide a scientific evaluation basis for revealing the influence of residuum on composition of coal liquefaction product during co-liquefaction.关键词
塔河渣油/淖毛湖煤/共热解/含氧官能团/诱导促进Key words
Tahe residuum/Naomaohu coal/co-pyrolysis/O-containing functional groups/promotion effect分类
化学化工引用本文复制引用
周晓东,吴浩,刘景梅,黄雪莉,刘婷,钟梅,马凤云..TG-FTIR研究煤油共热解产物逸出行为[J].燃料化学学报（中英文）,2024,52(4):525-535,11.基金项目
The project was supported by the Special Project for State Key Laboratory of Chemistry and Utilization of Carbon-Based Energy Resources,National Natural Science Foundation of China(22279110),and Special Fund Project for the Local Development of Science and Technology Guiding by the Central Government.碳基能源资源化学与利用国家重点实验室重点专项,国家自然科学基金(22279110)和中央引导地方科技发展专项资助 （22279110）
