高校化学工程学报2016，Vol.30Issue(5)：1127-1133,7.DOI:10.3969/j.issn.1003-9015.2016.05.020
高通量循环流化床提升管内Geldart B类颗粒团聚特性研究
Cluster Properties of Geldart B Particles in a High-Flux Circulating Fluidized Bed Riser
摘要
Abstract
Cluster properties including cluster concentration, duration time and frequency of Geldart B groups (silica sand) were experimentally investigated in a high-flux CFB (circulating fluidized bed) riser (60 mm ID and 5.5 m height) using wavelet decomposition of solid concentration signal measured by a fiber optic probe. The results indicate that the distribution of particle clusters is non-uniform inside the riser, which depends on operating conditions and riser position. The riser center region shows lower cluster concentration, shorter duration time and higher frequency. However, the near-wall zone exhibits the opposite feature. The cluster concentration and duration time increase with the increase of the solid circulation rate but decrease with the increase of the superficial gas velocity. The cluster frequency shows the opposite tendency, which increases first and then decreases with the increase of the solid circulation rate at low gas velocities.关键词
高通量/提升管/Geldart B颗粒/团聚物/小波分解Key words
high-flux/riser/Geldart B/particle cluster/wavelet decomposition分类
化学化工引用本文复制引用
邵珠海,常剑,陈宏刚,张锴..高通量循环流化床提升管内Geldart B类颗粒团聚特性研究[J].高校化学工程学报,2016,30(5):1127-1133,7.基金项目
国家自然科学基金(51476085，91434120)。 （51476085，91434120）
