Citrate process for SO2 recovery: Vapour-liquid data and correlation |
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| Affiliation: | 1. Georessources laboratory, Université de Lorraine, CNRS, BP 70239, F-54506 Vandœuvre-lès-Nancy, France;2. IFP Energies nouvelles, 1 et 4 avenue de Bois-Préau, 92852 Rueil-Malmaison, France;1. National Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;2. Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;3. School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 101408, China;4. HeBei Zhongke Tongchuang Vanadium & Titanium Technology Co., Ltd, Hengshui 053000, China;1. University of Novi Sad, Faculty of Technology Novi Sad, Laboratory for Chemical Contaminants and Sustainable Development, Bulevar cara Lazara 1, 21000 Novi Sad, Serbia;2. Institute of Environmental Assessment and Water Research, Consejo Superior de Investigaciones Científicas, Barcelona, Spain |
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| Abstract: | Precise knowledge of the quantitative data of equilibrium vapour pressure of SO2 over aqueous sodium citrate solution is of considerable technological importance for the design of both absorber and regenerator. The absence of such data prompted a series of measurements to determine them. The ranges of experimental conditions used for measurements of vapour-liquid equilibrium data were: gas flow rate, 1.60–1.701 min−1; SO2 concentration in inlet gases, 0.50–6.00 vol%; temperature, 40–70°C at atmospheric pressure and citrate buffer with the molar ratio CNaOH/CH3Ci of 0.50/1 .00, 1 .00/1 .00 and 2.00/1.00. The equilibrium vapour-liquid data were correlated by the extended two-parameter model. Good agreement between experimental results and those predicted by the suggested model was obtained for the whole investigated region of interest for SO2 absorption. |
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