化学工程2013，Vol.41Issue(1)：46-49,4.DOI:10.3969/j.issn.1005-9954.2013.01.011
密相输运床径向颗粒体积分数分布的研究
Radical solids volume fraction profiles in dense transport bed
摘要
Abstract
The radical solids volume fraction profiles were investigated in a dense transport bed (0.102 m in ID × 17 m in height) with the silica sand belonging to Group B. The results show that the radial solids volume fraction profiles are non-uniform; solids volume fraction is low and almost the same near the riser center (r/R = 0-0. 7) ; solids volume fraction increases significantly in the adjacent zone (r/R =0. 7-0. 9) ; solids volume fraction becomes the highest near the wall (r/R = 0. 9-0. 97). As the solids circulation rates increase or the riser air volume decreases, solids volume fraction increases at each radical position. The increase of solids volume fraction is the largest near the wall and relatively small near the riser center. At last, a correlation for predicting radical solids volume fraction profiles was proposed. The predictions of the correlation can work well for both Group A and Group B particles.关键词
密相输运床/气固二相流/径向颗粒体积分数分布Key words
dense transport bed/ gas-solid two-phase flow/ radical solids volume fraction profiles分类
能源科技引用本文复制引用
王圣典,阳绍军,赵凯,曾鑫,徐祥,肖云汉..密相输运床径向颗粒体积分数分布的研究[J].化学工程,2013,41(1):46-49,4.基金项目
国家高技术研究发展计划项目(863项目)(2006AA05A103) （863项目）
中国科学知识创新重要方向性项目课题(KGCX2-YW-348) （KGCX2-YW-348）
