非均匀布风对流化床密相床区燃烧温度的影响  

Effects on Dense-Phase Zone Temperature of Fluidized Bed with Uneven Air Distribution

作　　者：田文栋[1] 魏小林[1] 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,北京100080

出　　处：《燃烧科学与技术》2002年第3期216-219,共4页Journal of Combustion Science and Technology

基　　金：国家重点基础研究发展项目 (H1 9990 2 2 1 0 1 );国家自然科学基金资助项目 (597760 2 3);中国科学院重点课题资助项目 (KY95T- 0 3- 0 2 )

摘　　要：由于采用非均匀布风 ,内旋流流化床的移动区空气量不足 ,导致燃烧不充分 ,温度较低。当移动区未流化时 ,密相区内存在较明显的温度不均匀性。随着移动区流速的提高 ,温度差迅速减小。当移动区流速超过 2 .0 umf后 ,密相区温度基本均匀一致。流动区流速对密相区温度均匀有一定的影响 ,流速越高 。Because of the uneven distribution of the fluidized air the air in the moving-bed zone of ICFB is lower than the needed amount of combustion,and the combustion in this zone is insufficient and the temperature is lower than that in the flowing-bed zone.The temperature in the dense-phase zone is uneven when the moving bed is not fluidized.The temperature difference in the moving-bed zone and flowing-bed zone is rapidly shortened with increasing the fluidized velocity in the moving-bed zone.The temperature in the dense-phase zone is invariable when the air velocity of the moving-bed zone is over 2.0 u mf,The velocity of moving-bed zone has some effects on combustion stability.the higher the velocity the more stable the combustion.

关 键 词：非均匀布风 流化床 焚烧 温度 混合 城市固体废弃物 

分 类 号：TK227.1[动力工程及工程热物理—动力机械及工程]