废弃物颗粒在非均匀布风流化床中的横向扩散特性  

Characteristic of Lateral Diffusion of Waste Particles in Fluidized Bed with Uneven Air Distribution

作　　者：魏小林[1] 田文栋[2] 黎军[1] 吴东垠[1] 盛宏至[1] 

机构地区：[1]中国科学院力学研究所能源与环境工程研究室,北京100080 [2]中国科学院工程热物理研究所,北京100080

出　　处：《燃烧科学与技术》2001年第4期290-293,共4页Journal of Combustion Science and Technology

基　　金：中国科学院重点项目 (KY95T- 0 3- 0 2 );国家自然科学基金资助项目 (597760 2 3)

摘　　要：在试验基础上 ,分析了非均匀布风流化床中废弃物的横向扩散系数。表明配风方式对于燃料颗粒的扩散有很大影响 ,Λ字型布风板的横向扩散系数最大 ,V字型布风板较小 ,鼓泡床最小。同时发现内旋流床中沿床宽的扩散系数值有较大不同 。The characteristics of lateral diffusion of waste particles in fluidized bed with uneven air distrituion is analyzed based on the experimental results.The results indicate that the pattern of air distribution has strong influence on the diffusion of fuel particle.The lateral diffusion coefficients of “Λ” type of air distributor are the greatest and those of “V” type of air distributor are less and those of bubbling bed are the least.It s found that the diffusion coefficients are very different along the bed width in the internal circulating fluidized bed,and the lateral diffusion coefficients equations are induced for waste particles in fluidized bed with different patterns of air distribution.

关 键 词：内旋流 流化床 废弃物 扩散 

分 类 号：O359[理学—流体力学]