Extending the EMMS-bubbling model to fluidization of binary particle mixture: Parameter analysis and model validation

被引：23

作者：

Ahmad, Nouman ^{[1
]}

Tong, Ying ^{[1
,2
]}

Lu, Bona ^{[1
,2
,3
]}

Wang, Wei ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Sinodanish Coll, Beijing 100049, Peoples R China

[3] Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China

来源：

CHEMICAL ENGINEERING SCIENCE | 2019年 / 200卷

基金：

中国国家自然科学基金;

关键词：

Binary mixture; Fluidization; EMMS; Segregation; Drag; CFD; GAS-SOLID FLOWS; SIZE DISTRIBUTION; CFD SIMULATIONS; SEGREGATION; BED; DRAG; RISERS; HYDRODYNAMICS; EXTENSION;

D O I：

10.1016/j.ces.2019.02.016

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Bubbling fluidized beds with binary particle mixture have broad industrial applications. The difference in particle size/density leads to segregation phenomenon thus should be taken into account in modeling. In this work, we propose a binary EMMS-bubbling drag model by considering such difference and formation of bubbles which are associated with solid segregation. The model is validated through simulation of two fluidized beds with different binary particle mixtures. The new drag model is found to enable capturing the pronounced movement of bubbles, thus well predicts the segregation behavior, while using conventional drag leads to over-mixing of different particles. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：257 / 267

页数：11

共 52 条

[1] Extending the EMMS/bubbling model to fluidization of binary particle mixture: Formulation and steady-state validation [J].