Mathematical Modeling of Reverse Water-Gas Shift Reaction in a Fixed-Bed Reactor

2017 ◽  
Vol 40 (3) ◽  
pp. 598-607 ◽  
Author(s):  
Fatemeh Ghodoosi ◽  
Mohammad Reza Khosravi-Nikou ◽  
Ahmad Shariati
Keyword(s):  
Mathematical Modeling ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Water Gas Shift ◽  
Water Gas Shift Reaction ◽  
Reverse Water Gas Shift ◽  
Shift Reaction ◽  
Water Gas

Hydrogen Production via Low Temperature Water Gas Shift Reaction: Kinetic Study, Mathematical Modeling, Simulation and Optimization of Catalytic Fixed Bed Reactor using gPROMS

2017 ◽  
Vol 12 (3) ◽  
Author(s):  
Davood Mohammady Maklavany ◽  
Ahmad Shariati ◽  
Mohammad Reza Khosravi-Nikou ◽  
Behrooz Roozbehani
Keyword(s):  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Water Gas Shift ◽  
Optimal Controls ◽  
Water Gas Shift Reaction ◽  
Hydrogen Formation ◽  
Simulation And Optimization ◽  
Modeling Simulation ◽  
Shift Reaction ◽  
Water Gas

Abstract The kinetics study, modeling, simulation and optimization of water gas shift reaction were performed in a catalytic fixed bed reactor. The renowned empirical power law rate model was used as rate equation and fitted to experimental data to estimate the kinetics parameters using gPROMS. A good fit between predicted and experimental CO conversion data was obtained. The validity of the kinetic model was then checked by simulation of plug flow reactor which shows a good agreement between experimental and predicted values of the reaction rate. Subsequently, considering axial dispersion, a homogeneous model was developed for simulation of the water-gas shift reactor. The simulation results were also validated by checking the pressure drop of the reactor as well as the mass concentration at equilibrium. Finally, a multi-objective optimization was conducted for water-gas shift reaction in order to maximize hydrogen formation and carbon monoxide conversion, whereas the reactor volume to be minimized. Implementation of optimal controls leads to increase in hydrogen formation at reactor outlet up to 25.55 %.

Boosting reverse water-gas shift reaction activity of Pt nanoparticles through light doping of W

2021 ◽  
Author(s):  
Daiya Kobayashi ◽  
Hirokazu Kobayashi ◽  
Kohei Kusada ◽  
Tomokazu Yamamoto ◽  
Takaaki Toriyama ◽  
...  
Keyword(s):  
Pt Nanoparticles ◽  
Water Gas Shift ◽  
Solid Solution Alloy ◽  
Alloy Nanoparticles ◽  
Water Gas Shift Reaction ◽  
Reverse Water Gas Shift ◽  
Rwgs Reaction ◽  
Shift Reaction ◽  
Water Gas ◽  
First Time

We report PtW solid-solution alloy nanoparticles (NPs) as a reverse water-gas shift (RWGS) reaction catalyst for the first time. Atomic-level alloying of Pt and W significantly enhanced the RWGS reaction activity of Pt NPs.

Sign in / Sign up

Export Citation Format

Share Document