Study on Flow Characteristics and Mass Transfer Mechanism of Kettle Taylor Flow Reactor

Li Ye, Tengfei Wan, Xiaohui Xie and Lin Hu
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Li Ye: School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
Tengfei Wan: School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
Xiaohui Xie: School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
Lin Hu: School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

Energies, 2022, vol. 15, issue 6, 1-16

Abstract: A scheme of a gas–liquid mixed jet is designed by installing gas distributor at the bottom of a stirred tank reactor to generate Taylor vortex. The eddy flow characteristics and mass transfer mechanism in the reactor are analyzed by numerical simulation and experiment. The results show that the evolution law of Taylor vortex in a stirred tank reactor with a rotating Reynolds number is similar to that in a conventional Taylor reactor. The Taylor vortex generated in the stirred tank reactor creates a partial plug flow region in the original complete mixing flow pattern, which reduces back mixing, the plug flow area expands with the increase of rotating Reynolds number. Under the condition of a critical rotating Reynolds number (Re cr ), the gas phase homogeneity of the reactor is increased by 28% and the dissolved oxygen rate is increased by about 5 times, which effectively improves the flow condition in the reactor and strengthens the mass transfer efficiency between the gas and liquid. The research results provide a theoretical basis for breaking through the limitation of small reaction space of conventional Taylor flow reactor and expanding production scale. The refit of kettle reactor is universal and easy to operate.

Keywords: Taylor vortex; reactor; numerical simulation; fluid dynamics; mass transfer mechanism (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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