煤炭转化2024，Vol.47Issue(3)：103-112,10.DOI:10.19726/j.cnki.ebcc.202403010
生物质添加对脱油沥青气化的影响及动力学研究
Effect of biomass addition on gasification of deoiled asphalt and kinetics study
摘要
Abstract
Using gasification technology to convert the deoiled asphalt into synthesis gas is an environmentally friendly and efficient method to enhance its added value.However,the gas-ification reaction activity of deoiled asphalt is low,and the amount of carbon black generated dur-ing gasification is large.The alkali metal elements in biomass can effectively catalyze the gasifica-tion reaction of fossil fuels.Therefore,co-gasification of straw(RS)and deoiled asphalt was se-lected to improve its gasification reaction rate.An atmospheric thermogravimetric analyzer(TGA)was employed to investigate the co-gasification reaction characteristics of DOA and RS at different mixing ratios(mDOA∶mRS is 9∶1,8∶2,7∶3,1∶1,3∶7 respectively).The results were then compared with those obtained when only DOA was used.Scanning electron microscopy with energy-dispersive X-ray spectroscopy(SEM-EDS)was used to characterize the microstruc-ture and elemental distribution of co-gasification products,and the Coats-Redfern method was se-lected in conjunction with Malek's most probable mechanism function to calculate the co-gasifica-tion kinetic parameters and kinetic equations.The results show that RS mainly catalyzes gasifica-tion reactions through potassium elements in the ash.During co-gasification,potassium is trans-ferred from RS to the surface of DOA,and the gasification reaction active sites are increased on the surface of DOA by expanding pores and forming new pores;The synergistic effect of co-gasi-fication is most significant when the mixing ratio of DOA and RS is 3∶7,and the activation ener-gy is reduced by approximately 94.7 kJ/mol compared to DOA gasification alone.关键词
脱油沥青/生物质/气化/协同效应/动力学Key words
deoiled asphalt/biomass/gasification/synergistic effect/kinetics分类
化学化工引用本文复制引用
田朕,韩洋,代正华,周峰,王辅臣..生物质添加对脱油沥青气化的影响及动力学研究[J].煤炭转化,2024,47(3):103-112,10.基金项目
国家重点研发计划项目(2022YFB4101504)、新疆维吾尔自治区自然科学基金重点项目(2023D01D02)和上海市2021年科技创新行动计划项目(21DZ1209003). （2022YFB4101504）
