Behavior of mixtures of nano-particles in magnetically assisted fluidized bed

被引：56

作者：

Zeng, Ping ^{[1
]}

Zhou, Tao ^{[1
]}

Yang, Jingsi ^{[1
]}

机构：

[1] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Peoples R China

来源：

CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION | 2008年 / 47卷 / 01期

基金：

中国国家自然科学基金;

关键词：

magnetic fluidized bed; nano-particles; mixture; coarse magnets; terminal velocity;

D O I：

10.1016/j.cep.2007.08.009

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Gas-fluidization of nano-particle mixtures in magnetically assisted fluidized bed (MAFB) has been investigated. Nano-particles undergoing fluidization exhibit two types of behavior: agglomerate particulate fluidization (APF) and agglomerate bubbling fluidization (ABF). Fluidization of sole SiO2 or ZnO nano-particles exhibits APF and ABF, respectively, but mixtures of them can be fluidized stably and almost homogenously. Stable fluidization of nano-particle mixtures can be achieved by variations in both the field intensity and the initial mixture content. Simple analytical model is developed to predict the apparent terminal velocity of the mixture of APF and ABF nano-particles, and the calculated values are in agreement with the experimental data. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：101 / 108

页数：8

共 23 条

[1] BEHAVIOR OF GAS-FLUIDIZED BEDS OF FINE POWDERS .1. HOMOGENEOUS EXPANSION [J].

ABRAHAMSEN, AR ;

GELDART, D .

POWDER TECHNOLOGY, 1980, 26 (01) :35-46

[2]

[Anonymous], POWDER HANDL PROCESS

[3]

[Anonymous], INT POWDER BULK SOLI

[4] FLUIDIZATION OF COHESIVE POWDERS [J].

GELDART, D ;

HARNBY, N ;

WONG, AC .

POWDER TECHNOLOGY, 1984, 37 (JAN-) :25-37

[5] Aggregation behavior of nanoparticles in fluidized beds [J].

Hakim, LF ;

Portman, JL ;

Casper, MD ;

Weimer, AW .

POWDER TECHNOLOGY, 2005, 160 (03) :149-160

[6] Magnetic field assisted fluidization a unified approach - Part 1. Fundamentals and relevant hydrodynamics of gas-fluidized beds (batch solids mode) [J].

Hristov, J .

REVIEWS IN CHEMICAL ENGINEERING, 2002, 18 (4-5) :295-509

[7] Magnetic field assisted fluidization - Dimensional analysis addressing the physical basis [J].

Hristov, Jordan .

CHINA PARTICUOLOGY, 2007, 5 (1-2) :103-110

[8]

Hristov J, 2006, REV CHEM ENG, V22, P195

[9]

Jin Y., 2001, Fluidization Engineering Principles

[10]

LI H, 2002, PARTICULATIZATION GA

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