Flow reversal of reaction mixture in a fixed catalyst bed - a way to increase the efficiency of chemical processes |
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| Affiliation: | 1. Department of Energy, Environmental & Chemical Engineering, Washington University in St. Louis, St. Louis, Missouri, 63130, USA;2. Department of Thermal Engineering, Tsinghua University, Beijing, 100084, China;3. Department of Thermal Engineering, Xi''an Jiaotong University, Xi''an, Shaanxi, 710049, China;1. Textile School, Zhongyuan University of Technology, Zhengzhou 450007, Henan Province, China;2. Zhongyuan University of Technology Science Park, Zhengzhou 450007, Henan Province, China;1. NEXT ENERGY – EWE Research Centre for Energy Technology, Carl-von-Ossietzky-Str. 15, 26129 Oldenburg, Germany;2. Carl von Ossietzky University of Oldenburg, School of Mathematics and Natural Sciences, Centre of Interface Science, Department of Chemistry, 26111 Oldenburg, Germany;1. Department of Energy, Environmental and Chemical Engineering, Consortium for Clean Coal Utilization, Washington University in St. Louis, 1 Brookings Drive, St. Louis, MO 63130, USA;2. Department of Electronics and Information Systems, Ghent University, Krijgslaan 281, S8, Ghent B-9000, Belgium |
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| Abstract: | Various methods for increasing the efficiency of heterogeneous catalytic processes carried out in the forced unsteady-state regime are discussed. Increase in the efficiency may be caused by the influence of reaction medium on the catalyst and by the dynamic properties of the converter. Unsteady-state conditions can be created, e.g. when the direction of the reaction mixture flow is periodically reversed. In this case, temperature and concentration fields are formed in the catalyst fixed bed which are close to theoretical optimum values for a number of processes of great practical importance. Experimental data are reported which prove the efficiency of process performance (SO2 oxidation on vanadium catalysts) in unsteady-state conditions. |
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