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Chemcial Industry and Engineering 2024, Vol. 41 Issue (1) :144-150    DOI: 10.13353/j.issn.1004.9533.20220843
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Study on the effect of draft tube structure on mass transfer performance of airlift loop reactor
LI Liang, HAO Runqiu, HAO Yachao, SHI Xiaoguang, ZHANG Chengkai
National Engineering & Technological research center for Industry Water Treatment, CNOOC Tianjin Chemical Research & Design Institute, Tianjin 300131, China

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Abstract The airlift loop reactor is widely used in chemical industry, environment and other fields. It is important to study the gas-liquid two-phase flow behavior in the airlift loop reactor to improve its mass transfer performance. In this study, the gas-liquid two-phase flow model and bubble population balance model were developed to investigate the effects of a single square draft tube, a single circular draft tube and six circular draft tubes on the gas-liquid two-phase flow characteristics, bubble size distribution and gas-liquid mass transfer. The results show that the airlift loop reactor with six circular draft tubes has larger average gas holdup and smaller bubble size, thus providing improved mass transfer rate. The relevant simulation results are useful for the structural optimization and scale-up of the airlift loop reactor.
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LI Liang
HAO Runqiu
HAO Yachao
SHI Xiaoguang
ZHANG Chengkai
Keywordsairlift loop reactor   computational fluid dynamics   mass transfer   numerical simulation     
Received 2022-11-04;
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LI Liang, HAO Runqiu, HAO Yachao, SHI Xiaoguang, ZHANG Chengkai.Study on the effect of draft tube structure on mass transfer performance of airlift loop reactor[J]  Chemcial Industry and Engineering, 2024,V41(1): 144-150
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