Influence of carrier filling rate on gas–liquid–solid flow characteristics and oxygen transfer performance

XU Bin; REN Jiehui; ZHANG Tao; PENG Qian; HAN Liubing; XI Jiayao; CHENG Wen

doi:10.11949/0438-1157.20260220

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Influence of carrier filling rate on gas–liquid–solid flow characteristics and oxygen transfer performance

更新时间：2026-05-04

- Influence of carrier filling rate on gas–liquid–solid flow characteristics and oxygen transfer performance
- CIESC Journal (2026)
- 作者机构：
  
  1.西安理工大学旱区水工程生态环境全国重点实验室，陕西西安710048
  2.西安理工大学生态环境与化工学院，陕西西安710048
  3.中国电建集团西北勘测设计研究院有限公司，陕西西安710065
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20260220
  CLC： TQ021.1
- Received：12 February 2026，
  
  Revised：2026-04-29，
  
  Accepted：04 May 2026，
- 稿件说明：
移动端阅览
XU Bin, REN Jiehui, ZHANG Tao, et al. Influence of carrier filling rate on gas–liquid–solid flow characteristics and oxygen transfer performance[J/OL]. CIESC Journal, 2026.
DOI：

XU Bin, REN Jiehui, ZHANG Tao, et al. Influence of carrier filling rate on gas–liquid–solid flow characteristics and oxygen transfer performance[J/OL]. CIESC Journal, 2026. DOI： 10.11949/0438-1157.20260220.

摘要

基于欧拉三流体模型、颗粒动力学理论、群体平衡模型（population balance model

PBM）等建立了气-液-固三相CFD-PBM耦合模型，并结合曝气充氧性能实验，探索了载体填充率对气液固流动特性及氧传质效能的影响机制。结果表明，载体填充率显著影响了多相湍动参数分布与传质性能。在填充率为20%条件下流化速度和湍动能均较高，使得固相分布较为均匀，流化性能最佳；载体填充率与气泡平均直径呈显著负相关关系（R=-0.787），而与小气泡（0.27~1.02 mm）占比呈显著正相关关系（R=0.991），最高占比可达79.15%；随着载体填充率增加，氧传质参数（

、

STOE、E

等）均呈降低趋势，其中

由（15.05±0.24）h

-1

降至（11.39±0.26）h

-1

。综合表明，20%~30%填充率条件系统传质性能与流化性能均最佳，为反应器设计与运行提供重要依据。

Abstract

A gas-liquid-solid three-phase CFD-PBM coupled model was developed based on the Eulerian three-fluid model

the kinetic theory of granular flow and the population balance model (PBM). Combined with aeration oxygenation performance experiments

this study investigated the influence mechanism of carrier filling rate on flow characteristics and oxygen mass transfer efficiency. The results indicate that the carrier filling rate significantly affects the distribution of multiphase turbulent parameters and mass transfer performance. At a filling rate of 20%

both the fluidization velocity and turbulent kinetic energy are relatively high

resulting in the most uniform solid-phase distribution and the best fluidization performance. A significant negative correlation was observed between the carrier filling rate and the average bubble diameter (R=-0.787)

while a significant positive correlation was found between filling rate and the proportion of small bubbles (0.27~1.02mm) (R=0.991). with the highest proportion reaching 79.15%. As the carrier filling rate increased

oxygen mass transfer parameters (

STOE

etc.) showed a decreasing trend; specifically

decreased from (15.05±0.24) h

-1

to (11.39±0.26) h

-1

. In summary

a filling rate of 20%~30% achieves the optimal balance between mass transfer and fluidization performance

providing an important basis for reactor design and operation.

关键词

Keywords

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