摘要
建立了描述炭粒气化过程的移动火焰锋面模型(MFF-G模型),模型考虑了颗粒边界层气相反应(CO燃烧和水煤气置换反应)的影响,以及CO和H2对气化的抑制作用、颗粒孔隙变化的影响等.新模型被用于气流床气化炉的一维数值计算中,预报结果显示在燃烧/气化的连续过程中炭粒与环境之间有着明显的温度差异,考虑颗粒边界层气相反应有助于更准确地预报颗粒温度和气化产物.
The moving flame front model for gasification （MFF-G model）was built to predict char gasification process. The influence of homogeneous reactions in the particle boundary layer （i.e. CO combuStion and water-gas shift reaction）, the inhibiting effects of monoxide and hydrogen and the effect of pore structure were taken into account. The MFF-G model was used in one-dimensional gasification simulation for the entrained flow gasifier. The results show that distinct temperature difference actually exists between char particles and ambient gas in the continuous process from combustion to gasification. With homogeneous reactions in the particle boundary layer. More accurate predictions of particle temperature and gasification products will be made.
出处
《燃烧科学与技术》
EI
CAS
CSCD
北大核心
2011年第1期49-55,共7页
Journal of Combustion Science and Technology
基金
国家自然科学基金资助项目(50736006)
国家重点基础研究发展计划(973计划)资助项目(2004CB217703
2006CB200303)
关键词
炭粒
燃烧
气化
气相反应
char particle
combustion
gasification
homogeneous reaction
