燃料化学学报2012，Vol.40Issue(1)：21-28,8.
高温下渣熔融对煤焦-CO2气化反应特性的影响
Effects of molten slag on coal gasification reaction with CO2 at elevated temperature
摘要
Abstract
The CO2 gasification reactivity of coal chars blended with different proportions of coarse slag were investigated by using an STA449F3 thermo-balance in the isothermal mode at the temperature range from 900 °C to 1 380 °C. The thermal behavior of the sample was studied using thermo-gravimetric analysis and differential scanning calorimetry (TG-DSC), and the two regions (I. E. The low temperature region and the high temperature region) for the gasification reactivity and carbon conversion of coal chars were defined according to the flow temperature of coal ash fusion. The gasification reactivity and carbon conversion of coal chars with coarse slag added are improved in the low temperature region. But the addition of coarse slag decreases the carbon conversion, and the gasification reactivity of coal chars blended with coarse slag to certain ratio also decreases in the high temperature region. It is indicated that the initial gasification reaction of coal chars is chemically controlled in the low temperature region, and diffusively controlled in the high temperature region.关键词
等温热重/煤气化/气化反应性/碳转化率/TG-DSC/粗渣Key words
isothermal thermo-gravimetric analysis/ coal gasification/ gasification reactivity/ carbon conversion/ TG-DSC/ coarse slag分类
化学化工引用本文复制引用
吴加奇,许慎启,周志杰,于广锁,王辅臣..高温下渣熔融对煤焦-CO2气化反应特性的影响[J].燃料化学学报,2012,40(1):21-28,8.基金项目
国家重点基础研究发展规划(973计划,2004CB217700) （973计划,2004CB217700）
国家自然科学基金(20876048) （20876048）
国家高技术研究发展计划(863计划,2009AA04Z159). （863计划,2009AA04Z159）
