中国电机工程学报2012，Vol.32Issue(2)：87-92,6.
超低浓度煤层气在流化床燃烧过程中相间的传热传质特性
Heat and Mass Transfer During Ultra-low Concentration Coal-bed Methane Combustion in a Fluidized Bed
摘要
Abstract
It is significant to study heat and mass transfer between bubble and emulsion phases during ultra-low concentration coal bed methane combustion in a fluidized bed. A mathematic model based on heat and mass balance was established. The characteristic of heat and mass transfer was studied combining with the model and kinetic experiments. The effects of bed temperature, particle size, bubble diameter and inlet methane concentration on inter-phase heat and mass transfer were analyzed. The results show that increasing either the bed temperature or particle size result in the heat transfer coefficient decreasing, mass transfer coefficient increasing and dimensionless methane concentration decreasing at the outlet. The critical bubble diameter, at which the heat transfer coefficient reaches the maximum, was decreasing with particle size growing. The dimensionless methane concentration at the outlet increases when the particle size is added. The inlet methane concentration has little influence on heat and mass transfer.关键词
煤层气/流化床/燃烧/传热/传质Key words
coal bed methane/fluidized bed/combustion/heat transfer/mass transfer分类
能源科技引用本文复制引用
杨仲卿,张力,唐强..超低浓度煤层气在流化床燃烧过程中相间的传热传质特性[J].中国电机工程学报,2012,32(2):87-92,6.基金项目
重庆市自然科学基金重点项目f2009BA6067):中央高校基本科研业务费项目(CDJZR10140006). （CDJZR10140006）
