Using stereo XPTV to determine cylindrical particle distribution and velocity in a binary fluidized bed

被引：35

作者：

Chen, Xi ^{[1
]}

Zhong, Wenqi ^{[1
]}

Heindel, Theodore J. ^{[2
]}

机构：

[1] Southeast Univ, Key Lab Energy Thermal Convers & Control, Minist Educ, Sch Energy & Environm, Nanjing 210096, Jiangsu, Peoples R China

[2] Iowa State Univ, Dept Mech Engn, Ames, IA 50011 USA

来源：

AICHE JOURNAL | 2019年 / 65卷 / 02期

基金：

美国国家科学基金会;

关键词：

binary fluidized bed; cylindrical particle fluidization; particle velocity; X-ray particle tracking velocimetry; DIRECT NUMERICAL-SIMULATION; BIOMASS PARTICLES; NONSPHERICAL PARTICLES; PRESSURE-DROP; SIZE SEGREGATION; TERNARY MIXTURES; SAND; FLOW; ORIENTATION; POROSITY;

D O I：

10.1002/aic.16485

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Nonspherical particles are commonly found when processing biomass or municipal solid waste. In this study, cylindrical particles are used as generic nonspherical particles and are co-fluidized with small spherical particles. X-ray particle tracking velocimetry is used to track the three-dimensional particle position and velocity of a single tagged cylindrical particle over a long time period in the binary fluidized bed. The effects of superficial gas velocity (u(f)), cylindrical particle mass fraction (), particle sphericity (phi), and bed material size on the cylindrical tracer particle location and velocity are investigated. Overall, the cylindrical particles are found in the near-wall region more often than in the bed center region. Increasing the superficial gas velocity u(f) provide a slight improvement in the uniformity of the vertical and horizontal distributions. Increasing the cylindrical particle mass fraction causes the bed mixing conditions to transition from complete mixing into partial mixing. (c) 2018 American Institute of Chemical Engineers AIChE J, 65: 520-535, 2019

引用

页码：520 / 535

页数：16

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