Boreskov Institute of Catalysis of the Siberian Branch of Russian ...

OP-V-16EFFECT OF MICROREACTOR GEOMETRY IN PERFORMANCEOF CATALYTIC MICROREACTOR OF HYDROGEN PRODUCTIONBY CFD MODELINGFazeli A., Behnam M., Fatemi Sh., Mortazavi Y., Khodadadi A.A.Department of Chemical Engineering, Faculty of Engineering,University of Tehran, Tehran, IranAbstract Hydrogen production from steam reforming of methanol for fuel cell applicationwas modeled in a wall coated micro channel reactor by CFD approach. Heat of steamreforming was supplied from catalytic total oxidation (TOX) of methanol in neighboringchannel of steam reforming (SR) channel and conduct from TOX to SR channel throughmetal divider wall of the channels. Heat integration was compared in zigzag and straightgeometry of microreactor by CFD modeling. The model is 2 dimensional, steady state andcontaining five zones: TOX fluid, TOX catalyst layer, steel wall of the channel, SR catalystlayer, SR fluid. Set of partial differential equations (PDEs) including x and y momentumbalance, continuity, partial mass balances and energy balance was solved by finite volumemethod. And stiff reaction rates were considered for methanol total oxidation (TOX),methanol steam reforming (SR), water gas shift (WGS) and methanol decomposition (MD)reactions, in the model. The results show that zigzag geometry is beeter than straightgeometry because of increasing of heat and mass transfer, mixing. Keywords: Wall CoatedCatalytic Micro Channel Reactor, Microreactor, CFD Modeling, Methanol Steam Reforming,Hydrogen Production, zigzag geometry.199