loading page

Gas phase hydrodynamics in a surface-aerated tank with a long-short blades agitator
  • +1
  • Yongjun Wu,
  • Jian Wang,
  • Pan You,
  • Peicheng Luo
Yongjun Wu
Southeast University

Corresponding Author:[email protected]

Author Profile
Jian Wang
Beijing Institute of System Engineering
Author Profile
Pan You
Southeast University
Author Profile
Peicheng Luo
Southeast University
Author Profile

Abstract

This work aims to study the gas phase hydrodynamics in a stirred tank with a surface-aerated long-short blades agitator by the Eulerian‒Eulerian approach coupled with population balance model. Predicted local gas holdup and bubble size distribution agree well with those measured by a conductivity probe technique. The predictions demonstrate that the pressure depression in the center is the main driving force for gas suction and the downward flow carries the bubbles down to redistribute in the whole tank. The gas phase has higher gas holdup with large bubble size in the upper part and lower gas holdup but with small bubble size in the lower part of the tank. The predicted gas-liquid mass transfer coefficients agree well with our previous experimental results and just depends on the power consumption per unit volume when the aspect ratio of the liquid height to the tank diameter varies from 1.1 to 2.0.
30 Aug 2021Submitted to AIChE Journal
31 Aug 2021Assigned to Editor
31 Aug 2021Submission Checks Completed
05 Sep 2021Reviewer(s) Assigned
30 Nov 2021Editorial Decision: Revise Major
29 Dec 20211st Revision Received
29 Dec 2021Assigned to Editor
29 Dec 2021Submission Checks Completed
30 Dec 2021Reviewer(s) Assigned
18 Feb 2022Editorial Decision: Revise Minor
20 Feb 20222nd Revision Received
20 Feb 2022Submission Checks Completed
20 Feb 2022Assigned to Editor
05 Mar 2022Editorial Decision: Accept
13 Mar 2022Published in AIChE Journal. 10.1002/aic.17680