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Circulating Jet for Enhancing the Mass Transfer in a Gas-liquid Stirred Tank Reactor
  • +2
  • Lei Wang,
  • Xiao Xu,
  • Hualin Wang,
  • HongLai Liu,
  • Qiang Yang
Lei Wang
East China University of Science and Technology
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Xiao Xu
East China University of Science and Technology
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Hualin Wang
East China University of Science and Technology
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HongLai Liu
East China University of Science and Technology
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Qiang Yang
East China University of Science and Technology
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Abstract

A gas-liquid stirred tank reactor (STR) has some problems, such as low mass transfer efficiency, high exhaust gas oxygen concentration, and low product conversion rate, due to limitations of stirring speed and input power. This article proposes a method to enhance the gas-liquid mass transfer in a STR using circulating jet internals. When a circulating jet is added, the average bubble size in the reactor is reduced to 1.26 mm, and the overall gas holdup is increased to 8.23%, which is an increase of 3.62 times of the original STR. The gas-liquid volumetric mass transfer coefficient is increased to 0.05556 s-1, which is 4.84 times of the original STR. The unit volume power is increased by only 1.4 times. These data provide references for the design and scale-up of new jet STRs.

Peer review status:ACCEPTED

05 Feb 2021Submitted to AIChE Journal
10 Feb 2021Submission Checks Completed
10 Feb 2021Assigned to Editor
16 Feb 2021Reviewer(s) Assigned
29 Mar 2021Editorial Decision: Revise Major
23 Apr 20211st Revision Received
03 May 2021Assigned to Editor
03 May 2021Submission Checks Completed
04 May 2021Reviewer(s) Assigned
18 May 2021Editorial Decision: Revise Minor
16 Jun 20212nd Revision Received
20 Jun 2021Submission Checks Completed
20 Jun 2021Assigned to Editor
28 Jun 2021Reviewer(s) Assigned
18 Jul 2021Editorial Decision: Accept