naa a22 4500 510820697 CHVBK 20180411083530.0 cr unu---uuuuu 180411e20130401xx s 000 0 eng 10.1007/s11814-012-0221-y doi (NATIONALLICENCE)springer-10.1007/s11814-012-0221-y Hydrogen recovery from Tehran refinery off-gas using pressure swing adsorption, gas absorption and membrane separation technologies: Simulation and economic evaluation [Elektronische Daten] [Ali Mivechian, Majid Pakizeh] Hydrogen recovery from Tehran refinery off-gas was studied using simulation of PSA (pressure swing adsorption), gas absorption processes and modeling as well as simulation of polymeric membrane process. Simulation of PSA process resulted in a product with purity of 0.994 and recovery of 0.789. In this process, mole fraction profiles of all components along the adsorption bed were investigated. Furthermore, the effect of adsorption pressure on hydrogen recovery and purity was examined. By simulation of one-stage membrane process using co-current model, a hydrogen purity of 0.983 and recovery of 0.95 were obtained for stage cut of 0.7. Also, flow rates and mole fractions were investigated both in permeate and retentate. Then, effects of pressure ratio and membrane area on product purity and recovery were studied. In the simulation of the gas absorption process, gasoline was used as a solvent and product with hydrogen purity of 0.95 and recovery of 0.942 was obtained. Also, the effects of solvent flow rate, absorption temperature, and pressure on product purity and recovery were studied. Finally, these three processes were compared economically. The results showed that the PSA process with total cost of US$ 1.29 per 1 kg recovered H2 is more economical than the other two processes (feed flow rate of 115.99 kmol/h with H2 purity of 72.4 mol%). Korean Institute of Chemical Engineers, Seoul, Korea, 2013 Hydrogen Separation nationallicence PSA nationallicence Membrane nationallicence Gas Absorption nationallicence Off-gas nationallicence Mivechian Ali Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, P. O. Box 9177948974, Mashhad, Iran aut Pakizeh Majid Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, P. O. Box 9177948974, Mashhad, Iran aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/4(2013-04-01), 937-948 0256-1115 30:4<937 2013 30 11814 https://doi.org/10.1007/s11814-012-0221-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-012-0221-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mivechian Ali Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, P. O. Box 9177948974, Mashhad, Iran aut NATIONALLICENCE 700 1- Pakizeh Majid Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, P. O. Box 9177948974, Mashhad, Iran aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/4(2013-04-01), 937-948 0256-1115 30:4<937 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer