Three-dimensional full loop simulation of solids circulation in an interconnected fluidized bed

被引：27

作者：

Guan, Yanjun ^{[1
,3
]}

Chang, Jian ^{[1
]}

Zhang, Kai ^{[1
]}

Wang, Baodong ^{[2
]}

Sun, Qi ^{[2
]}

Wen, Dongsheng ^{[3
]}

机构：

[1] North China Elect Power Univ, Beijing Key Lab Emiss Surveillance & Control Ther, Beijing 102206, Peoples R China

[2] Natl Inst Clean & Low Carbon Energy, Beijing 102209, Peoples R China

[3] Univ Leeds, Sch Chem & Proc Engn, Leeds LS2 9JT, W Yorkshire, England

来源：

POWDER TECHNOLOGY | 2016年 / 289卷

基金：

国家高技术研究发展计划(863计划); 中国国家自然科学基金;

关键词：

3-D full loop; CFD simulation; Solids circulation rate; Interconnected fluidized bed; Chemical looping combustion; CFD SIMULATION; CO2; CAPTURE; COMBUSTION; REACTOR; HYDRODYNAMICS; GASIFICATION; SYSTEM; FLOW; COAL; PARAMETER;

D O I：

10.1016/j.powtec.2015.11.043

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

3-D full loop CFD simulation of solids circulation is conducted in a complicated circulating-fluidized bed, which consists of a riser, a bubbling bed, a cyclone and a loop-seal. The effects of operating gas velocity, particle size and total solids inventory on the solids circulation rate are investigated based on the system pressure balance of an interconnected fluidized bed. CFD results indicate that the gas velocity in the riser plays a dominant role in controlling the solids circulation rate, whilst the gas velocity in the pot-seal influences in a narrow operating range. The solids circulation rate is strongly influenced by particle size and total solids inventory, but becomes insensitive to the operating conditions in the bubbling bed when the gas velocity is higher than the minimum fluidization velocity. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：118 / 125

页数：8

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