燃料化学学报（中英文）2025，Vol.53Issue(1)：70-81,12.DOI:10.1016/S1872-5813(24)60483-4
复配生物质灰催化煤焦气化反应性及其赋存形态迁移规律
Catalytic effects of simulated biomass ashes on coal gasification reactivity and the transformation evolution of minerals during gasification process
摘要
Abstract
The influence of key components in biomass ash on the gasification reactivity of coal,the migration patterns of typical biomass ash components and the structural evolution characteristics of coal during gasification process were deeply investigated by using a simulated biomass ash.The results indicate that gasification temperature and Si element content are the key factors affecting the gasification reactivity of coal.When the Si/K mass ratio is 0.5 and 1.0,the gasification reactivity of the composite coal sample is larger than that of raw coal,while the Si/K mass ratio is 1.5,the gasification reactivity is less than that of raw coal.Under the experimental conditions,the composite coal sample with a Si/K mass ratio of 0.5 and a Ca/K mass ratio of 0.4 shows the greatest reactivity.The gasification reactivity index is 1.35 times higher than that of raw coal.Compared to potassium-containing minerals,the calcium-containing minerals have stronger catalysis and are more likely to react with silicates to form calcium-containing silicates,such as calcium zeolites(CaO·Al2O3·2SiO2·4H2O),thereby avoiding the reaction between potassium-containing minerals and silicates to form non-catalytic minerals,which allows potassium to fully exert its catalytic effects.Dynamic analysis implies that the shrinking core model well describes the gasification process of deashing coal catalyzed by simulated biomass ash.When the Si/K mass ratio is 0.5 and the Ca/K mass ratio is 0.4,the gasification reaction activation energy of composite coal is reduced to 174.39 kJ/mol,which is 14.32%lower than that of raw coal.关键词
煤/生物质/催化气化/碱金属/碱土金属/气化反应性Key words
coal/biomass/catalytic gasification/alkali metal/alkaline earth metal/gasification reactivity分类
化学化工引用本文复制引用
李晓,董睿,朱超超,张如梦,黄婷婷,刘开蓉,张兴闯,李佩..复配生物质灰催化煤焦气化反应性及其赋存形态迁移规律[J].燃料化学学报（中英文）,2025,53(1):70-81,12.基金项目
The project was supported by National Natural Science Foundation of China(52374283)and China University of Mining and Technology(CUMT)Open Sharing Fund for Large-scale Instruments and Equipment(DYGX-2024-76).国家自然科学基金(52374283)和中国矿业大学大型仪器设备开放共享基金(DYGX-2024-76)资助 （52374283）
