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Mathematical Modeling of Reverse Water‐Gas Shift Reaction in a Fixed‐Bed Reactor
Author(s) -
Ghodoosi Fatemeh,
Khosravi-Nikou Mohammad Reza,
Shariati Ahmad
Publication year - 2017
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201600220
Subject(s) - water gas shift reaction , thermodynamics , space velocity , chemistry , pressure drop , kinetic energy , steady state (chemistry) , non equilibrium thermodynamics , drop (telecommunication) , reaction rate , chemical kinetics , mechanics , materials science , kinetics , hydrogen , catalysis , physics , engineering , organic chemistry , telecommunications , biochemistry , quantum mechanics , selectivity
A two‐dimensional, pseudo‐homogeneous model is used to study the reverse water‐gas shift (RWGS) reaction in a fixed‐bed reactor under steady‐state conditions. A redox kinetic model is applied in the reactor model for a description of the reaction kinetics. Results show that the model predictions have an average error of 2.7 % and are in good agreement with experimental data for nonequilibrium conditions. With increasing space velocity, the CO 2 conversion decreases, but the temperature drop in the reactor increases. Furthermore, a H 2 /CO 2 ratio equal to one in the feed is the optimum ratio. Finally, the temperature, concentration, and pressure profiles inside the reactor are predicted.