FINE SOLIDS MIXING IN A BINARY-SOLID RISER（I）──AXIAL SOLIDS MIXING

Wei Fei; Cheng Yi; Jin Yong; Yu Zhiqing(Department of Chemical Engineering

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FINE SOLIDS MIXING IN A BINARY-SOLID RISER（I）──AXIAL SOLIDS MIXING

更新时间：2025-12-16

- FINE SOLIDS MIXING IN A BINARY-SOLID RISER（I）──AXIAL SOLIDS MIXING
- CIESC Journal Issue 5, (1996)
- 作者机构：
  
  清华大学化工系!北京100084,清华大学化工系!北京100084,清华大学化工系!北京100084,清华大学化工系,北京,100084
- 作者简介：
- 基金信息：
- DOI：
  CLC： Q02
- Online First：25 October 1996，
  
  Published：25 October 1996
- 稿件说明：
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Wei Fei, Cheng Yi, Jin Yong, et al. FINE SOLIDS MIXING IN A BINARY-SOLID RISER（I）──AXIAL SOLIDS MIXING[J]. CIESC Journal, 1996, (5).
DOI：

Wei Fei, Cheng Yi, Jin Yong, et al. FINE SOLIDS MIXING IN A BINARY-SOLID RISER（I）──AXIAL SOLIDS MIXING[J]. CIESC Journal, 1996, (5). DOI：

摘要

利用磷光颗粒示踪技术对双颗粒提升管中细颗粒的轴向混合行为进行了研究测得反映细颗粒轴向扩散的停留时间分布曲线呈双峰分布，这表明细颗粒存在两种类型的扩散形式：弥散颗粒扩散和颗粒团扩散本文提出的一维两组分扩散模型可较好地描述停留时间分布曲线的双峰分布.实验结果表明细颗粒的两种轴向混合行为有较大的差别，而总包Peclet数几乎不随操作条件及床内粗细颗粒比例变化

Abstract

Experimental results for the axial mixing of fine particles in a binary-solid riser are presented.The measured bimodal RTD demonstrates two types of the axial dispersion of fine par ticles:the dispersion of dispersed particles and the dispersion of clusters.A proposed one-dimen sional two component dispersion model describes the bimodal RTDs very well.The axial Peclet number of the fine particle changes little at the different fractions of coarse particles

gas velocity and solids flux.

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