燃料化学学报2016，Vol.44Issue(12)：1422-1429,8.
负载碳酸钠煤焦催化气化反应特性研究
Investigation on catalytic gasification reaction characteristics of coal char with Na2 CO3
摘要
Abstract
The coal char gasification experiments with Na2 CO3 as catalyst was investigated on TGA. The pore structure and apparent structure evolution characteristics of char were studied by scanning electron microscopy and pore structure and specific surface area analyzer. The influence of temperature (650-800℃) , gasification agent (steam, CO2) and sodium carbonate loadings (Na+loading amounts 2. 2%, 4. 4%, 6. 6%) on the gasification reactivity of Shenfu bituminous coal ( SF) and Zunyi anthracite ( ZY) were investigated. The results show that the loading of Na2 CO3 stimulates the development of pore structure in pyrolysis process. In the atmosphere of CO2 , there was a saturated catalyst capacity for SF and excessive catalyst loading could block internal pore structure of coal, leading to the decrease of gasification reactivity. ZY gasification reactivity increases with catalyst loading, and both SF and ZY gasification reactivity increase with the increase of temperature. In the atmosphere of steam, both SF and ZY gasification reactivity increase with the rise of catalyst loading and temperature. Na2 CO3 is favorable for the decrease of reaction temperature and activation energy under the desired gasification rate.关键词
碳酸钠/催化气化/孔隙结构/反应活性Key words
Na2 CO3/catalytic gasification/pore structure/reactivity分类
化学工程引用本文复制引用
李献宇,郭庆华,丁路,于广锁..负载碳酸钠煤焦催化气化反应特性研究[J].燃料化学学报,2016,44(12):1422-1429,8.基金项目
The project was supported by the National Natural Science Foundation of China (21376081).国家自然科学基金(21376081)资助 （21376081）
