摘要
针对一实际尺寸的分解炉建立数学模型,采用简化的PDF反应模型对3种不同煤质煤粉在分解炉内的燃烧过程进行了数值模拟。数值计算结果直观地展现了煤粉在炉内运动过程中的颗粒轨迹、挥发份释放速率、焦炭燃烧速率的详细情况,并对不同煤质煤粉进行了对比研究,为进一步研究分解炉内煤粉燃烧和碳酸钙分解的耦合作用提供了参考,为分析煤质与分解炉结构的适应性问题提供了理论依据。
Aiming at a calciner with true size, three kinds of pulverized coal particles combustion in calciner of cement kiln were modeled by using PDF chemical model with method of numerical simulation. The particles tracks were given, the devolatilization rate of volatile was shown, and the coal char burnout rate was anatomized. Also the comparing study about different kinds of coal was conducted. The results provided a theory foundation of analyzing the effect to pulverized coal particles combustion of outside physical condition and inside coal features.
出处
《武汉理工大学学报》
EI
CAS
CSCD
北大核心
2005年第8期20-22,共3页
Journal of Wuhan University of Technology
基金
国家"863"项目(2002AA335050)
国家自然科学基金(50276045)
关键词
分解炉
煤燃烧
数值模拟
PDF反应模型
calciner
coal particles combustion
numerical simulation
PDF chemical model
