RESEARCH ON CHARACTERISTICS OF PARTICLE-GAS TWO-PHASE FLOW INSIDE THE COAL-POWDER EXHAUSTER

LI Jian-feng1; LU Jun-fu2; ZHANG Hai2; LIU Qing2; YUE Guang-xi21.Technical Consulting Center of China Electricity Council

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RESEARCH ON CHARACTERISTICS OF PARTICLE-GAS TWO-PHASE FLOW INSIDE THE COAL-POWDER EXHAUSTER

Thermal Power Generation Vol. 38, Issue 5, Pages: 29-34(2009)

更新时间：2025-09-28

- RESEARCH ON CHARACTERISTICS OF PARTICLE-GAS TWO-PHASE FLOW INSIDE THE COAL-POWDER EXHAUSTER
- 作者机构：
  
  1. 中国电力企业联合会科技服务中心
  2. 清华大学热科学与动力工程教育部重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK223.26
- Published：2009
- 稿件说明：
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LI Jian-feng1, LU Jun-fu2, ZHANG Hai2, et al. RESEARCH ON CHARACTERISTICS OF PARTICLE-GAS TWO-PHASE FLOW INSIDE THE COAL-POWDER EXHAUSTER[J]. Thermal Power Generation, 2009, 38(5): 29-34.
DOI：

LI Jian-feng1, LU Jun-fu2, ZHANG Hai2, et al. RESEARCH ON CHARACTERISTICS OF PARTICLE-GAS TWO-PHASE FLOW INSIDE THE COAL-POWDER EXHAUSTER[J]. Thermal Power Generation, 2009, 38(5): 29-34. DOI：

摘要

采用通用计算流体力学软件Fluent对某9-26型排粉机内部气固两相流在出口风速不均匀条件下进行了三维数值模拟。结果表明

排粉机出口固相浓度的不均匀性与相同条件下实际测量结果基本一致;排粉机本身的离心力以及蜗壳内气流的夹带导致固体颗粒向排粉机蜗壳的外侧面、后侧面聚集

该现象可以用于改善排粉机出口的颗粒分离。

Abstract

The particle-gas two-phase flow in the high-pressure centrifugal blower of 9-26 type was simulated three dimensionally with computational fluid dynamics Fluent at the condition of non-uniform air speed on the outlet of the fan.The result of the simulation showed the inhomogeneity of particle concentration at outlet of the exhauster

which agrees well with the measurement results at the same condition.Particles enrichment near the outside and rear side of the volute casing is caused by the centrifugal force and the flow entrainment according to the simulation prediction.This phenomenon could be used to improve the particles separation at the outlet of fan.

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