naa a22 4500 510819338 CHVBK 20180411083523.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s11814-013-0028-5 doi (NATIONALLICENCE)springer-10.1007/s11814-013-0028-5 Optimal oxygen concentration strategy through an isothermal oxidative coupling of methane plug flow reactor to obtain a high yield of C2 hydrocarbons [Elektronische Daten] [Amideddin Nouralishahi, Hassan Pahlavanzadeh, Mohammadmehdi Choolaei, Elaheh Esmaeili, Amir Yadegari] An optimal oxygen concentration trajectory in an isothermal OCM plug flow reactor for maximizing C2 production was determined by the algorithm of piecewise linear continuous optimal control by iterative dynamic programming (PLCOCIDP). The best performance of the reactor was obtained at 1,085 K with a yield of 53.9%; while, at its maximum value, it only reached 12.7% in case of having no control on the oxygen concentration along the reactor. Also, the effects of different parameters such as reactor temperature, contact time, and dilution ratio (N2/CH4) on the yield of C2 hydrocarbons and corresponding optimal profile of oxygen concentration were studied. The results showed an improvement of C2 production at higher contact times or lower dilution ratios. Furthermore, in the process of oxidative coupling of methane, controlling oxygen concentration along the reactor was more important than controlling the reactor temperature. In addition, oxygen feeding strategy had almost no effect on the optimum temperature of the reactor. Finally, using the optimal oxygen strategy along the reactor has more effect on ethylene selectivity compared to ethane. Korean Institute of Chemical Engineers, Seoul, Korea, 2013 Oxidative Coupling of Methane (OCM) nationallicence Modelling nationallicence Optimization nationallicence Reaction Engineering nationallicence Optimal Control nationallicence Nouralishahi Amideddin Catalysis and Nanostructured Materials Research Laboratory, School of Chemical Engineering, University of Tehran, P. O. Box 11155/4563, Tehran, Iran aut Pahlavanzadeh Hassan Chemical Engineering Department, Tarbiat Modares University, Tehran, Iran aut Choolaei Mohammadmehdi Carbon Nanotechnology and Energy Institute, Tehran, Iran aut Esmaeili Elaheh Catalysis and Nanostructured Materials Research Laboratory, School of Chemical Engineering, University of Tehran, P. O. Box 11155/4563, Tehran, Iran aut Yadegari Amir Catalysis and Nanostructured Materials Research Laboratory, School of Chemical Engineering, University of Tehran, P. O. Box 11155/4563, Tehran, Iran aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/6(2013-06-01), 1213-1221 0256-1115 30:6<1213 2013 30 11814 https://doi.org/10.1007/s11814-013-0028-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-013-0028-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nouralishahi Amideddin Catalysis and Nanostructured Materials Research Laboratory, School of Chemical Engineering, University of Tehran, P. O. Box 11155/4563, Tehran, Iran aut NATIONALLICENCE 700 1- Pahlavanzadeh Hassan Chemical Engineering Department, Tarbiat Modares University, Tehran, Iran aut NATIONALLICENCE 700 1- Choolaei Mohammadmehdi Carbon Nanotechnology and Energy Institute, Tehran, Iran aut NATIONALLICENCE 700 1- Esmaeili Elaheh Catalysis and Nanostructured Materials Research Laboratory, School of Chemical Engineering, University of Tehran, P. O. Box 11155/4563, Tehran, Iran aut NATIONALLICENCE 700 1- Yadegari Amir Catalysis and Nanostructured Materials Research Laboratory, School of Chemical Engineering, University of Tehran, P. O. Box 11155/4563, Tehran, Iran aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/6(2013-06-01), 1213-1221 0256-1115 30:6<1213 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer