Mass transfer with complex chemical reactions: Simultaneous absorption of H2S and CO2 in solutions of alkanolamines |
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| Affiliation: | 1. Department of Aqualife Medicine, Chonnam National University, Republic of Korea;2. Department of Marine Life Sciences, Jeju National University, Republic of Korea;3. IBMC, Miguel Hernandez University, Elche, Spain;1. Aquatic Animal Health Management Research Unit, Department of Fisheries, Faculty of Agriculture, Rajamangala University of Technology Srivijaya, Nakhon Si Thammarat, 80110, Thailand;2. Aquatic Animal Health Research Center, Department of Aquatic Science, Faculty of Natural Resources, Prince of Songkla University, Songkhla, 90110, Thailand;3. Department of Biochemistry, Faculty of Science, Prince of Songkla University, Songkhla, 90110, Thailand;4. Department of Marine Biology and Environmental Sciences, Faculty of Agriculture, University of Miyazaki, 889-2192, Japan;1. State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Qingdao 266101, PR China;2. Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China;3. Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China;1. U.S. Department of Energy, National Energy Technology Laboratory, 3610 Collins Ferry Road, P.O. Box 880, Morgantown, WV 26507-0880, United States;2. Department of Chemical Engineering, West Virginia University, 395 Evansdale Drive, Morgantown, WV 26505, United States;3. Oak Ridge Institute for Science and Education, P.O. Box 117, Oak Ridge, TN 37831, United States;1. College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China;2. Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan 430070, China |
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| Abstract: | An absorption model has been developed which is able to calculate the simultaneous absorption rates (and corresponding enhancement factors) of two gaseous components into a reactive liquid. In the liquid phase multiple complex parallel reversible reactions may take place. This model, for example, can be used for design and development of gas-treating processes for the selective removal of hydrogen sulphide. Due to the implementation of an additional transformation of the spatial coordinate, the required computational time could be reduced substantially without loss of accuracy. The present model can be incorporated into an overall absorption module for column design and simulation. Experimentally determined simultaneous absorption rates of H2S and CO2 in aqueous solutions of alkanolamines and mixtures of alkanolamines can be predicted satisfactorily well for the conditions where both gases have a mutual interaction on the respective rates. The experiments were carried out in a stirred vessel with a flat surface over a wide range of process conditions. |
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