A draft-tube conical spouted bed for drying fine particles

被引：89

作者：

Altzibar, H. ^{[1
]}

Lopez, G. ^{[1
]}

Alvarez, S. ^{[1
]}

Jose, M. J. San ^{[1
]}

Barona, A. ^{[1
]}

Olazar, M. ^{[1
]}

机构：

[1] Univ Basque Country, Dept Chem Engn, Bilbao 48080, Spain

来源：

DRYING TECHNOLOGY | 2008年 / 26卷 / 03期

关键词：

conical spouted bed; drying; fluidization; hydrodynamics;

D O I：

10.1080/07373930801898018

中图分类号：

TQ [化学工业];

学科分类号：

0817 [化学工程与技术];

摘要：

A study has been conducted on the performance of a draft tube conical spouted bed for drying fine particles. Batch operation has been performed with nonporous, porous, and open-sided draft tubes in order to ascertain the optimum configuration of this internal device. The nonporous draft tube requires the lowest minimum spouting velocity. Nevertheless, the solid circulation rate and the drying efficiency of the open-sided draft tube are superior to any other spouted bed configuration. Moreover, it allows for reducing the height of the fountain and, consequently, the height of the drying equipment.

引用

收藏

页码：308 / 314

页数：7

相关论文

共 27 条

[1]

Kinetics of polystyrene pyrolysis in a conical spouted bed reactor [J].

Aguado, R ;

Olazar, M ;

Gaisán, B ;

Prieto, R ;

Bilbao, J .

CHEMICAL ENGINEERING JOURNAL, 2003, 92 (1-3) :91-99

[2]

Liquid spouting of pulp fibers in a conical vessel [J].

AlJabari, M ;

vandeVen, TGM ;

Weber, ME .

CANADIAN JOURNAL OF CHEMICAL ENGINEERING, 1996, 74 (06) :867-875

[3]

Analysis of fluid dynamics behavior of conical spouted bed in presence of pastes [J].

Bacelos, MS ;

Neto, PIS ;

Silveira, AM ;

Freire, JT .

DRYING TECHNOLOGY, 2005, 23 (03) :427-453

[4]

Minimum spouting velocity of conical spouted beds [J].

Bi, HT ;

Macchi, A ;

Chaouki, J ;

Legros, R .

CANADIAN JOURNAL OF CHEMICAL ENGINEERING, 1997, 75 (02) :460-465

[5]

SPOUTING WITH A POROUS DRAFT-TUBE [J].

CLAFLIN, JK ;

FANE, AG .

CANADIAN JOURNAL OF CHEMICAL ENGINEERING, 1983, 61 (03) :356-363

[6]

Simulation of drying suspensions in spout-fluid beds of inert particles [J].

Costa, EF ;

Cardoso, M ;

Passos, ML .

DRYING TECHNOLOGY, 2001, 19 (08) :1975-2001

[7]

Hydrodynamics and stability of slot-rectangular spouted beds. Part I: Thin bed [J].

Dogan, OM ;

Freitas, LAP ;

Lim, CJ ;

Grace, JR ;

Luo, B .

CHEMICAL ENGINEERING COMMUNICATIONS, 2000, 181 :225-242

[8]

Hydrodynamics and stability of slot-rectangular spouted beds - Part II: Increasing bed thickness [J].

Freitas, LAP ;

Dogan, OM ;

Lim, CJ ;

Grace, JR ;

Luo, B .

CHEMICAL ENGINEERING COMMUNICATIONS, 2000, 181 :243-258

[9]

Gas-to-particle heat transfer in the draft tube of a spouted bed [J].

Freitas, LAP ;

Freire, JT .

DRYING TECHNOLOGY, 2001, 19 (06) :1065-1082

[10]

A comparative study of spouted and spout-fluid beds for tablet coating [J].

Kfuri, CR ;

Freitas, LAP .

DRYING TECHNOLOGY, 2005, 23 (12) :2369-2387