内构件存在时提升管内流动及颗粒混合行为研究

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内构件存在时提升管内流动及颗粒混合行为研究

刘会娥; 魏飞; 杨艳辉; 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:2003-08-28 发布日期:2003-08-28
通讯作者: 刘会娥

Hydrodynamics and Solids Mixing Behavior in a Riser with Blunt Internals

LIU Hui'e; WEI Fei; YANG Yanhui; JIN Yong

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

Received:1900-01-01 Revised:1900-01-01 Online:2003-08-28 Published:2003-08-28
Contact: LIU Hui'e

摘要/Abstract

摘要： The hydrodynamics and solids mixing behavior in a riser with blunt internals are studied. A
uniformradial distribution for solids fraction and particle velocity achieves near the
internals. The turbulent velocityof particles near the wall increases with the addition of
the internals, with the lateral solids mixing enhancedsignificantly. Probability density
distribution of particle velocity is bimodal in the riser with internals, which issimilar
to that in the conventional riser, indicating that no significant difference in the micro
flow structure existsbetween the riser with internals and the conventional riser. At the
same time, the axial solids mixing behaviorchanges insignificantly with the addition of
internals. These results indicate that the micro flow structure in theriser is very stable,
which changes insignificantly with the change of the bed structure.

关键词: riser;internal;hydrodynamics;solids;mixing behavior

Abstract: The hydrodynamics and solids mixing behavior in a riser with blunt internals are studied. A
uniformradial distribution for solids fraction and particle velocity achieves near the
internals. The turbulent velocityof particles near the wall increases with the addition of
the internals, with the lateral solids mixing enhancedsignificantly. Probability density
distribution of particle velocity is bimodal in the riser with internals, which issimilar
to that in the conventional riser, indicating that no significant difference in the micro
flow structure existsbetween the riser with internals and the conventional riser. At the
same time, the axial solids mixing behaviorchanges insignificantly with the addition of
internals. These results indicate that the micro flow structure in theriser is very stable,
which changes insignificantly with the change of the bed structure.

Key words: riser, internal, hydrodynamics, solids, mixing behavior

刘会娥, 魏飞, 杨艳辉, 金涌. 内构件存在时提升管内流动及颗粒混合行为研究

[J]. CIESC Journal.

LIU Hui'e, WEI Fei, YANG Yanhui, JIN Yong. Hydrodynamics and Solids Mixing Behavior in a Riser with Blunt Internals[J]. .

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内构件存在时提升管内流动及颗粒混合行为研究

Hydrodynamics and Solids Mixing Behavior in a Riser with Blunt Internals

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