Gas dispersion and solid suspension in a three-phase stirred tank with triple impellers

Hanbin Wang; Zhengming Gao; Bingjie Wang; Yuyun Bao; Ziqi Cai

doi:10.1016/j.cjche.2019.09.013

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Gas dispersion and solid suspension in a three-phase stirred tank with triple impellers

Fluid Dynamics and Transport Phenomena | Updated：2026-01-06

- Gas dispersion and solid suspension in a three-phase stirred tank with triple impellers
- Chinese Journal of Chemical Engineering Vol. 28, Issue 5, Pages: 1195-1202(2020)
- Affiliations：
  
  State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology,Beijing,China,100029
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2019.09.013
  CLC：
- Published：2020
- Accepted：
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Hanbin Wang, Zhengming Gao, Bingjie Wang, Yuyun Bao, Ziqi Cai. Gas dispersion and solid suspension in a three-phase stirred tank with triple impellers[J]. Chinese Journal of Chemical Engineering, 2020, 28(5): 1195-1202.
DOI：

Hanbin Wang, Zhengming Gao, Bingjie Wang, Yuyun Bao, Ziqi Cai. Gas dispersion and solid suspension in a three-phase stirred tank with triple impellers[J]. Chinese Journal of Chemical Engineering, 2020, 28(5): 1195-1202. DOI： 10.1016/j.cjche.2019.09.013.

摘要

Abstract

The hydrodynamics is still not fully understood in the three-phase stirred tank equipped with multi-impeller due to the intensive interaction between phases. In this work

the solid critical suspension speed (

JSG

)

relative power demand (RPD) and overall gas holdup (

) were measured in an air-water-glass beads stirred tank equipped with multi-impeller

which consists of a parabolic blade disk turbine below two down-pumping hydrofoils. Results show that either the

JSG

or the specific power consumption increases when increasing the volumetric solid concentration or superficial gas velocity. RPD changes less than 10% when solid volumetric concentration ranges from 0 to 15%.

decreases with the increase of solid concentration

and increases with the increase of both superficial gas velocity and the total specific power consumption. The quantitative correlations of

JSG

RPD and

were regressed as the function of superficial gas velocity

specific power consumption

Froude number and gas flow number

in order to provide the reference in the design of such three-phase stirred tank with

similar multi-impellers.

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