Effect of the jet direction of gas nozzle on the residence time distribution of solids in circulating fluidized bed risers

被引：17
|
作者：
Yoo, Hoanju [1 ]
Moon, Hokyu [2 ]
Choi, Seungyeong [3 ]
Park, Yong-Ki [4 ]
Cho, Hyung Hee [3 ]
机构：
[1] Korea Aerosp Ind LTD, Aircraft Res & Dev Div, 78,Gongdan 1 Ro, Sacheon 52529, Gyeongnam, South Korea
[2] Natl Fus Res Inst, Tokamak Engn Dept, 169-168 Gwahak Ro, Daejeon 34133, South Korea
[3] Yonsei Univ, Dept Mech Engn, 50 Yonsei Ro, Seoul 03722, South Korea
[4] Korea Res Inst Chem Technol, Green Chem Proc Res Div, Ganjeongro 141, Daejeon 34114, South Korea
来源：
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS | 2017年 / 71卷
关键词：
Circulating fluidized bed; Gas nozzle; Jet direction; Solid residence time distribution; Numerical simulation; CFD SIMULATION; COEFFICIENT CORRELATIONS; MODEL; INLET; FLOW;
D O I：
10.1016/j.jtice.2016.12.018
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The authors investigate the effects of the direction of the gas jet on the solid residence time distribution in a CFB riser. Tracer technique was employed to calculate the RTD of solids. A Eulerian-Eulerian model with kinetic theory of granular flow and species transport was used to simulate the motion of tracer particles in a CFB riser. For a comparative analysis of the direction of the gas jet, simulations of vertical, horizontal and hybrid jets were carried out. The direction of the gas jet significantly influenced the axial and radial structure of bed, and hence affected the RTD for solid particles. The mean residence time of solids was changed, and the results showed that 16.3 s, 14.8 s, and 11.4 s with vertical, horizontal and hybrid jets nozzles, respectively. (C) 2016 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：235 / 243
页数：9
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