内构件对高密度提升管内流体力学及径向气体混合的影响

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内构件对高密度提升管内流体力学及径向气体混合的影响

杨艳辉; 贾新莉; 魏飞; 金涌

Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2001-09-28 发布日期:2001-09-28
通讯作者: 杨艳辉

Hydrodynamics and Lateral Gas Dispersion in a High-Density Circulating Fluidized Bed
Reactor with Bluff Internals

YANG Yanhui; JIN Yong; WEI Fei; JIA Xinli

Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

Received:1900-01-01 Revised:1900-01-01 Online:2001-09-28 Published:2001-09-28
Contact: YANG Yanhui

摘要/Abstract

摘要： Effect of bluff internals on the hydrodynamics and lateral gas mixing was studied in a
0.186m ID high-density riser. With the bluff internals, the extremely non-uniform radial
profiles of solid fraction and particle velocity become flat and the dense downflow layer
near the wall disappears, indicating the significant enhancement of solid turbulence
introduced by the internals. The fluctuation velocity and solid fraction transient signal
analysis indicates a significant increase in fluctuation intensity near the wall region.
The length influenced by the internals on the flow structure is about 1 meter. The lateral
gas dispersion coefficient increases significantly as the bluff internals exist in the
riser.

关键词: high-density riser;bluff internal;solid fraction;particle velocity;transient analysis; gas mixing;gas dispersion model

Abstract: Effect of bluff internals on the hydrodynamics and lateral gas mixing was studied in a
0.186m ID high-density riser. With the bluff internals, the extremely non-uniform radial
profiles of solid fraction and particle velocity become flat and the dense downflow layer
near the wall disappears, indicating the significant enhancement of solid turbulence
introduced by the internals. The fluctuation velocity and solid fraction transient signal
analysis indicates a significant increase in fluctuation intensity near the wall region.
The length influenced by the internals on the flow structure is about 1 meter. The lateral
gas dispersion coefficient increases significantly as the bluff internals exist in the
riser.

Key words: high-density riser, bluff internal, solid fraction, particle velocity, transient analysis, gas mixing

杨艳辉, 贾新莉, 魏飞, 金涌. 内构件对高密度提升管内流体力学及径向气体混合的影响[J]. CIESC Journal.

YANG Yanhui, JIN Yong, WEI Fei, JIA Xinli. Hydrodynamics and Lateral Gas Dispersion in a High-Density Circulating Fluidized Bed
Reactor with Bluff Internals[J]. .

参考文献

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内构件对高密度提升管内流体力学及径向气体混合的影响

Hydrodynamics and Lateral Gas Dispersion in a High-Density Circulating Fluidized Bed
Reactor with Bluff Internals

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内构件对高密度提升管内流体力学及径向气体混合的影响

Hydrodynamics and Lateral Gas Dispersion in a High-Density Circulating Fluidized Bed Reactor with Bluff Internals

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Hydrodynamics and Lateral Gas Dispersion in a High-Density Circulating Fluidized Bed
Reactor with Bluff Internals