摘要
在循环流化床冷态试验台架上．以空气为流化介质．砂子（０．１～０．４５ｍｍ）为床料．采用反射式光导纤维探针．分别测定了沿轴向和径向的颗粒浓度分布．特别是考察了矩形截面循环床边角对气固两相流动的影响．对径向颗粒浓度分布的影响．考察了壁面附近的气固流动．引入了时序分析方法对采样数据建立了参数模型。实验结果对加深循环流化床内气固两相流动的理解具有重要意义．
With air serving as fluidized medium and samd(0.1-0.45mm)as bed material tile conccntralon distribution of axial and radial Particles has been separately determined on a circulating fluldlzed bed cold-state test rig through tile use of a reflexive optical fiber probe. A spedal study is conducted of the effect of the rectangular section circulating bed edge angle on the gas-solid dual-phase flow and the radial porticle conecntration distribution. Also studied is tile gas-solid flow in the neighborhood of tile wall surface. An sequcntial analysis method hsa been introduced to establish a parameter model for the sampled data. The experimental re-suits can play a significant role in achieving an in-depth understanding of the gassolid dual-phase flow in the circulating fluidized bed.
出处
《热能动力工程》
CAS
CSCD
北大核心
1995年第3期144-148,共5页
Journal of Engineering for Thermal Energy and Power
基金
湖北省自然科学基金
关键词
循环流化床
流动性能
颗粒浓度
二相流动
circulating fluidized bed,rectangular section,perticle concentration, AR model
