Comprehensive Modeling of Sorption-Enhanced Steam Reforming of Coke Oven Gas in a Fluidized Bed Membrane Reactor

Abstract

Integration of membrane hydrogen separation and carbon dioxide capture with fuel steam reforming efficiently promote hydrogen production and feedstock conversion. In this study, catalytic steam reforming of coven oven gas in a sorption-enhanced fluidized bed membrane reactor (MA-SE-SRCOG) was simulated using a reactive three-fluid model under Euler framework. The numerical studies provided insights into details about interactions of multi-scale sub-processes, including hydrogen permeation, carbon dioxide adsorption, catalytic reforming and multiphase flow dynamics, during MA-SE-SRCOG. Concentration polarization caused by hydrogen separation was also examined. Meanwhile, impacts of several operating parameters, such as reaction pressure, steam concentration, membrane position and reactor scale, on the performances of MA-SE-SRCOG were evaluated in terms of CH4 conversion, CO selectivity, hydrogen recovery factor and CO2 fix factor. The simulation results demonstrated that membrane hydr...