Simulation study of water gas shift reaction in a membrane reactor

摘要: Abstract The water gas shift (WGS) reaction is an important step of hydrogen production in industrial cycles for upgrading H2 rich streams by CO conversion present syngas mixtures. WGS was studied a Pd-alloy membrane reactor (MR) means non-isothermal mathematical model using, as main parameter, Damkohler's number (Da), the ratio characteristic times flow rate and reaction, temperature range 220–320 °C. Two different reactant equimolecular feed were considered: one containing only H2O, other also CO2 higher interest. permeation driving force generated pressure ranging 200–1500 kPa which allows good recovery index (up to 95%) retentate stream 80%) CO2. No sweep used; therefore, pure obtained permeate. conversion, its partial are variables used analysing MR performance showing advantages with respect TR large range. In addition, volume introduced first time proposed simple tools reduction or improved shown MRs; both lead catalyst amount size being reduced. two new indexes engineering open window on analysis MRs separation process intensification strategy. This paper describes modelling packed-bed involving dense Pd–Ag commercial permselective membrane.