Research on the gas-liquid dispersion characteristics of self-inducing Venturi impeller

YANG Huiming; YOU Zhonghao; LI Hui; SONG Zijie; LUO Xinyu; LUO Peicheng

doi:10.11949/0438-1157.20260565

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Research on the gas-liquid dispersion characteristics of self-inducing Venturi impeller

更新时间：2026-06-04

- Research on the gas-liquid dispersion characteristics of self-inducing Venturi impeller
- CIESC Journal (2026)
- 作者机构：
  
  1.东南大学化学化工学院，江苏南京 211100
  2.南京大学化工学院，江苏南京 210046
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20260565
  CLC： TQ027
- Received：20 April 2026，
  
  Revised：2026-05-25，
  
  Accepted：04 June 2026，
- 稿件说明：
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YANG Huiming, YOU Zhonghao, LI Hui, et al. Research on the gas-liquid dispersion characteristics of self-inducing Venturi impeller[J/OL]. CIESC Journal, 2026.
DOI：

YANG Huiming, YOU Zhonghao, LI Hui, et al. Research on the gas-liquid dispersion characteristics of self-inducing Venturi impeller[J/OL]. CIESC Journal, 2026. DOI： 10.11949/0438-1157.20260565.

摘要

针对传统自吸式搅拌桨在气泡粒径调控方面的不足，提出一种新型自吸式文丘里搅拌桨，采用照相法等实验方法研究了不同功率消耗下文丘里搅拌桨的临界吸气、气含率、气泡尺寸分布、气液传质系数等气液分散和传质特性。结果表明：相较于传统圆盘式自吸桨，文丘里搅拌桨通过其特有的缩颈−扩径结构，在喉管处形成的负压是文丘里搅拌桨的自吸气推动力，同时在喉管处形成的高强度湍流场，强化了气液的高效分散。约85%的气泡直径分布在2.00 mm以下，其中40%的气泡尺寸有效控制在百微米级，粒径分布曲线呈现明显的单峰窄分布特征，气泡具有较高的均匀性。该新型文丘里搅拌桨在气泡粒径调控方面具有明显优势，为提高气液相搅拌釜内的气液传质性能提供了一种有效的技术方案。

Abstract

To address the limitations of traditional self-inducing impellers in bubble size regulation

a self-inducing Venturi impeller is proposed. Experimental methods such as imaging method are employed to investigate the gas-liquid dispersion and mass transfer characteristics of the Venturi impeller under different power consumptions

including critical self-inducing speed

gas holdup

bubble size distribution and gas−liquid mass transfer coefficient. The results show that

compared with the conventional disk-type self-inducing impeller

the Venturi impeller utilizes its unique necking-expanding structure to generate negative pressure in the throat

which serves as the driving force for self-inducing. Meanwhile

the high-intensity turbulent flow field formed in the throat significantly enhances gas-liquid dispersion. Approximately 85% of the bubble diameters are below 2.00 mm

among which 40% are effectively controlled within the hundred-micrometer range. The bubble size distribution exhibits a distinct unimodal narrow distribution

indicating high bubble uniformity. The Venturi impeller shows clear advantages in bubble size regulation

providing an effective technical solution for improving gas-liquid mass transfer performance in stirred tanks.

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references

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