Modeling of Packed Bed Reactors: Hydrogen Production by the Steam Reforming of Methane and GlycerolA. Dixon, B. MacDonald, A. Olm
Department of Chemical Engineering, Worcester Polytechnic Institute, Worcester, MA, USA
The conventional route to hydrogen production is by steam reforming of methane (MSR) in a multitubular packed bed. With the increasing use of biodiesel as a renewable fuel, interest has grown in steam reforming of the excess glycerol produced as a side product (GSR).
We use COMSOL Multiphysics® software to model a tubular packed bed reactor, solving a single pellet model at each point. The two reforming reactions involve significant changes in moles. The impact of the mole changes in the absence of heat effects in a one-dimensional tube model with a coupled single particle model is presented. The equations are formulated in terms of mole fractions, and then equations for the evolution of the mean molar mass are included.