Mass transfer performance of structured packings in a CO2 absorption tower |
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| Authors: | Wei Yang Xiaodan Yu Jianguo Mi Wanfu Wang Jian Chen |
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| Affiliation: | 1.State Key laboratory of Chemical Engineering, Tsinghua University, Beijing 100084, China;2.State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China;3.CNPC Research Institute of Safety & Environment Technology, Beijing 102206, China |
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| Abstract: | This paper studies the mass transfer performance of structured packings in the absorption of CO2 from air with aqueous NaOH solution. The Eight structured packings tested are sheet metal ones with corrugations of different geometry parameters. Effective mass transfer area and overall gas phase mass transfer coefficient have been measured in an absorption column of 200 mm diameter under the conditions of gas F-factor in 0.38-1.52 Pa0.5 and aqueous NaOH solution concentration of 0.10-0.15 kmol·m-3. The effects of gas/liquid phase flow rates and packing geometry parameters are also investigated. The results show that the effective mass transfer area changes not only with packing geometry parameters and liquid load, but also with gas F-factor. A new effective mass transfer area correlation on the gas F-factor and the liquid load was proposed, which is found to fit experiment data very well. |
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| Keywords: | Separation Absorption Mass transfer Packed bed Structured packing Carbon dioxide |
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