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Received July 12, 2011
Accepted October 1, 2011
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PLS-based kinetics modeling and optimization of the oxidative coupling of methane over Na2WO4/Mn/SiO2 catalyst
Department of Chemical Engineering, Ajou University, Suwon 443-749, Korea 1Clean Energy Center, Korea Institute of Science and Technology, Seoul 136-791, Korea 2Department of Chemical Engineering, Hanyang University, Seoul 133-791, Korea
mjpark@ajou.ac.kr
Korean Journal of Chemical Engineering, November 2011, 28(11), 2142-2147(6), 10.1007/s11814-011-0253-8
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Abstract
Reactor modeling for the oxidative coupling of methane over Na2WO4/Mn/SiO2 catalyst was addressed in the present study. The catalyst loading part was designed to be thicker than the inlet and outlet parts to reduce the rates of side reactions in the gas phase, and the optimal aspect ratio (L to D ratio) for no pressure drop and minimum side reactions was determined in experimental studies. Experiments were also conducted under a variety of operating conditions such as gas hourly space velocity (GHSV), CH4/O2 ratio and reaction temperature, and partial least-squares model was applied to predict the performance of the reactor. The validity of the developed model was corroborated by the comparison with experimental data, and normalized parametric sensitivity analysis was carried out. Finally, the genetic algorithm (GA) was applied to determine the optimal conditions for maximum production of ethane and ethylene.
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References
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