Situating the high-density circulating fluidized bed

被引：124

作者：

Grace, JR ^{[1
]}

Issangya, AS

Bai, DR

Bi, HT

Zhu, JX

机构：

[1] Univ British Columbia, Dept Chem & Bioresource Engn, Vancouver, BC V6T 1Z4, Canada

[2] Univ Western Ontario, Dept Chem & Biochem Engn, London, ON N6A 5B9, Canada

来源：

AICHE JOURNAL | 1999年 / 45卷 / 10期

关键词：

D O I：

10.1002/aic.690451009

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Gas-solid flow in high-density circulating fluidized-bed risers differs significantly from that in conventional flow regimes, including fast fluidization and pneumatic conveying. It is shown that when there is no downward flux at the wall at high suspension densities, and hence no core/annulus structure, the flow corresponds to a dense suspension up-flow regime. This flow regime is explained, and ifs key properties given. A lower boundary is also proposed for this new flow regime based on available data.

引用

页码：2108 / 2116

页数：9

共 50 条

[1]

AZZI M, 1991, CIRCULATING FLUIDIZE, V3, P189

[2]

Bader R., 1988, CIRCULATING FLUIDIZE, P123

[3] Characteristics of gas-fluidized beds in different flow regimes [J].

Bai, D ;

Issangya, AS ;

Grace, JR .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1999, 38 (03) :803-811

[4] Characterization of gas fluidization regimes using pressure fluctuations [J].

Bai, D ;

Shibuya, E ;

Nakagawa, N ;

Kato, K .

POWDER TECHNOLOGY, 1996, 87 (02) :105-111

[5]

Bai D. R., 1993, Chemical Engineering Technology: Industrial Chemistry-Plant Equipment-Process Engineering-Biotechnology, V16, P307

[6] SATURATION CARRYING-CAPACITY OF GAS AND FLOW REGIMES IN CFB [J].

BAI, DL ;

KATO, K .

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 1995, 28 (02) :179-185

[7] TYPES OF CHOKING IN VERTICAL PNEUMATIC SYSTEMS [J].

BI, HT ;

GRACE, JR ;

ZHU, JX .

INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 1993, 19 (06) :1077-1092

[8] Annular wall layer thickness in circulating fluidized bed risers [J].

Bi, HT ;

Zhou, J ;

Qin, SZ ;

Grace, JR .

CANADIAN JOURNAL OF CHEMICAL ENGINEERING, 1996, 74 (05) :811-814

[9] STATIC INSTABILITY ANALYSIS OF CIRCULATING FLUIDIZED-BEDS AND CONCEPT OF HIGH-DENSITY RISERS [J].

BI, HT ;

ZHU, JX .

AICHE JOURNAL, 1993, 39 (08) :1272-1280

[10]

BI HT, 1995, CHEM ENG RES DES, V73, P154

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