An experimental study for H2S and CO2 removal via caustic scrubbing system |
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| Institution: | 1. TÜB?TAK Marmara Research Center Energy Institute, P.O. Box 21, 41470 Gebze, Kocaeli, Turkey;2. Kocaeli University, Mechanical Engineering Department, Kocaeli, Turkey;1. Université de Toulouse, Mines Albi, CNRS, Centre RAPSODEE, Campus Jarlard, Route de Teillet, F.81013 Albi Cedex09, France;2. IMT Atlantique, GEPEA UMR CNRS 6144, Université Bretagne Loire, 4 rue A. Kastler, CS 20722, 44307 Nantes Cedex 03, France;1. Center for Microbial Ecology and Technology (CMET), Ghent University, Coupure Links 653, 9000, Gent, Belgium;2. CAPTURE, www.capture-resources.be, Belgium;3. Concawe, Boulevard du Souverain, 165 B-1160, Brussels, Belgium;1. College of Architecture and Environment, Sichuan University, Chengdu 610065, People’s Republic of China;2. National Engineering Research Center for Flue Gas Desulfurization, Chengdu 610065, People’s Republic of China;3. College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People’s Republic of China;1. Department of Agriculture and Fisheries (DAF), 203 Tor Street, P.O. Box 102, Toowoomba, Qld 4350, Australia;2. National Institute of Water and Atmospheric Research (NIWA), Hamilton 3216, New Zealand;3. Advanced Water Management Centre, University of Queensland, St Lucia, Qld 4072, Australia;1. Center of Excellence for Occupational Health and Research Center for Health Sciences, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran;2. Center of Excellence for Occupational Health and Occupational Health and Safety Research Center, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran;3. Department of Physics, Faculty of Scinece, Bu-Ali Sina University, Hamedan, Iran;4. Department of Biostatistics, School of Public Health, Hamadan University of Medical Sciences, Hamadan, 65175-4171, Iran |
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| Abstract: | In this study, removal of hydrogen sulfide (H2S) and carbon dioxide (CO2) from simulated syngas has been studied on one column scrubbing system. Gas flow rate as a measure of gas residence time and superficial gas velocity, gas composition, inlet H2S load, flow modes (countercurrent and cocurrent) and packing geometry were the parameters in the design and/or operation of an acid gas scrubber system. Better H2S scrubbing efficiencies have been obtained in countercurrent flow mode than that of cocurrent flow mode. When accordingly designed, static mixer with its superior performance on H2S removal overweighed to structured packings. The coexistence of CO2 and H2S has been shown to increase the sodium hydroxide (NaOH) consumption along the scrubber column thereby decreasing the H2S removal efficiency at higher H2S loads. The gas residence time as changing with the gas velocity was found to be more dominant on acid gas removal efficiency than the effect of superficial gas velocity within the experimented range. A gas residence times of equal or above 3 s were seemed to be closer to the optimum point. |
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| Keywords: | Gas clean up Packed bed gas scrubbers Hydrogen sulfide removal NaOH Static mixer |
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