摘要
本文通过建立单颗粒焦炭粒子燃烧的数学模型并利用计算机求解，探明了焦炭粒子中含碳量随粒径变化呈峰值特征这一现象的物理本质。结果表明：粒径越小，其温度越接近于床内环境温度，而且燃尽时间随粒径变化的曲线将出现峰值。本文还讨论了分离器性能、燃烧室中燃料的内循环和燃烧室高度对燃尽过程的影响。
Mathematical model of single char particle combustion in circulating fluidized bed combustor (CFBC) is developed. Numerical solution of it in operating conditions of CFBC verifies the nature of a phenomenon that the distribution of carbon content of char particles has a peak value versus their diameters. The results show that the temperature of the smaller char particle is close to the bed temperature, and there also exists a peak value for the burn-out time of char particles versus their diameters. In addition, the influence of recycle separator performance, internal circulation of particles in the combustor and combustor height on burning processes of char particles is discussed.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
1995年第1期106-110,共5页
Journal of Engineering Thermophysics
基金
国家攀登计划资助
关键词
循环流化床锅炉
燃烧
锅炉
circulating fluidized bed combustor (CFBC), combustion.
