Portal de Periódicos da CAPES

Membrane reactor modelling, validation and simulation for the WGS reaction using metal doped silica membranes

2009; Wiley; Volume: 5; Issue: 1 Linguagem: Inglês

10.1002/apj.382

1932-2143

Scott Battersby, Bradley P. Ladewig, Mikel Duke, Victor Rudolph, João C. Diniz da Costa,

Ammonia Synthesis and Nitrogen Reduction

Abstract In this work, a Matlab Simulink © model was developed to analyse and predict the performance of a metal doped silica membrane reactor for H 2 production via both the high and low temperature water gas shift reaction. An activated transport model for mixed gas separation with combined reaction was developed to model the effects within a membrane reactor unit. The membrane reactor was modelled as a number of perfectly mixed compartments containing a catalyst bed and a gas selective membrane. The combined model provided a good fit to experimentally measured results for higher conversions up to equilibrium, which is generally the case for industrial applications. Simulation results showed that H 2 separation and H 2 recovery improved with pressure, due to the H 2 concentration driving force across the membrane. For a single stage membrane reactor unit, a maximum conversion of 93% could be achieved with a H 2 recovery rate of 95%. In addition, the membrane reactor efficiency increased at higher temperatures and lower H 2 O:CO feed ratios, allowing for CO conversion improvements by the membrane reactor. Copyright © 2009 Curtin University of Technology and John Wiley & Sons, Ltd.