Study on the characteristics of micro-interface intensified oxidation of ammonium sulfite |
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| Authors: | Guoqiang YANG Wei ZENG Huaxun LUO Gaodong YANG Zhibing ZHANG |
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| Affiliation: | School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, Jiangsu, China |
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| Abstract: | The process intensification of interfacial area and reaction conditions in multi-phase systems are important issues in industrially scaled reactors. In order to investigate the intensifying effect of micro-interface system on gas-liquid mass transfer and reaction rate, the ammonium sulfite oxidation was selected as the research object. A systematic air forced oxidation experiment was carried out through the micro-interface intensification reactor (MIR) and the traditional bubble column reactor (BCR) under the same experiment platform and operating conditions. The bubble size distribution and overall gas holdup were measured by high-speed camera technology and differential pressure measurement, respectively. The experimental results showed that MIR obtained higher gas holdup because of the micro-interface structure, the interfacial area was increased by more than 10 times, the reaction rate increased by 56.8% averagely compared with BCR. The experimental conclusions provide certain data support for the industrial application of the multiphase reaction system of the micro-interface intensification reactor. |
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| Keywords: | interfacial area gas-liquid mass transfer process intensification bubble size distribution ammonium sulfite oxidation |
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