Journal ArticleDOI
Performance Assessment of Water Gas Shift Membrane Reactors by a Two-dimensional Model
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TLDR
In this paper, the effect of hydrogen removal in membrane water gas shift reactors was investigated by a two-dimensional, non-isothermal model in order to analyze the water-gas shift reactor performance.Abstract:
There is currently a large world effort towards developing hydrogen power as the next generation of clean energy for both the transportation and the electricity sectors. Water gas shift is a thermodynamically limited reaction, which has to operate at low temperatures, reducing kinetics rate, and increasing the amount of catalyst required to reach valuable carbon monoxide conversions. It has been widely demonstrated that the integration of hydrogen selective membranes is a promising way to enhance water gas shift reactors’ performance: a Pd-based membrane reactor operated successfully overcoming the thermodynamic constraints of a traditional reactor thanks to the removal of hydrogen from the reaction environment. In this work, the effect of hydrogen removal in membrane water gas shift reactors will be investigated by a two-dimensional, non-isothermal model in order to analyze the water gas shift reactor performance. In particular, the effects on the reactor performance of the gas space hourly velocity, rea...read more
Citations
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Journal ArticleDOI
Data-Driven Neuro-Optimal Temperature Control of Water–Gas Shift Reaction Using Stable Iterative Adaptive Dynamic Programming
Qinglai Wei,Derong Liu +1 more
TL;DR: A novel data-driven stable iterative adaptive dynamic programming (ADP) algorithm is developed to solve optimal temperature control problems for water-gas shift (WGS) reaction systems where neural networks are used to construct the dynamics of the WGS system and solve the reference control.
Journal ArticleDOI
Multi-scale model based design of membrane reactor/separator processes for intensified hydrogen production through the water gas shift reaction
TL;DR: In this article, the impact of various diffusion models (Maxwell-Stefan, Wilke, Dusty-Gas) on the predictions of a multi-scale membrane reactor/separator mathematical model is quantified.
Journal ArticleDOI
CFD investigation of biogas reformate using membrane-assisted water gas shift reaction: Parametric analyses
TL;DR: In this paper, a detailed computational fluid dynamics (CFD) model was developed for the water gas shift of untreated biogas reformate in both fixed bed and membrane reactors to gain insights into the interaction of 3Ni5Cu/Ce0.5Zr0.33Ca0.17 catalyst with fluid transport phenomena taking place in the reactor.
Journal ArticleDOI
Performance assessment of high temperature water-gas-shift reaction for hydrogen generation and its purification in a membrane reactor/separator of hydrogen or of carbon dioxide
Imed Eddi,Lemnouer Chibane +1 more
TL;DR: In this article, the performance of the high temperature water gas shift reaction was analyzed under adiabatic conditions through a mathematical model developed for this purpose, and the main results indicated that both membrane reactors provided under some conditions a complete carbon monoxide conversion.
Book ChapterDOI
Data-Based Neuro-Optimal Temperature Control of Water Gas Shift Reaction
TL;DR: A data-driven stable iterative adaptive dynamic programming (ADP) algorithm is developed to solve the optimal temperature control problem for water gas shift (WGS) reaction system where neural networks are used to construct the dynamics of WGS system and solve the reference control.
References
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Journal ArticleDOI
Methane steam reforming in asymmetric Pd- and Pd-Ag/porous SS membrane reactors
TL;DR: In this article, the authors applied electrolessly deposited Pd and Pd-Ag/porous stainless steel composite membranes in methane steam reforming, which significantly enhanced the partial removal of hydrogen from the reaction location as a result of diffusion through the Pdbased membranes.
Journal ArticleDOI
The water‐gas shift reaction: from conventional catalytic systems to Pd‐based membrane reactors—a review
TL;DR: In this article, the most relevant topics of water-gas shift (WGS) reaction in hydrogen perm-selective membrane reactors (MRs) are reviewed and the most used catalysts and relevant progress achieved so far are described and critically reviewed.
Book
Modelling, Simulation and Optimization of Industrial Fixed Bed Catalytic Reactors
TL;DR: In this article, the authors developed mathematical models of industrial fixed-bed catalytic reactors, including the single pellet problem and the deactivation problem, and applied them to the problem of industrial steam reformers.
Journal ArticleDOI
An analysis of the performance of membrane reactors for the water–gas shift reaction using gas feed mixtures
TL;DR: In this paper, the effect of the feed composition on the membrane reactor efficiency in order to determine the best conditions in terms of CO conversion was analyzed, and experimental tests with mixtures of different compositions have been carried out in three different systems of reaction: (1) traditional fixed-bed reactor; (2) membrane reactor with mesoporous ceramic membrane; (3) membrane Reactor with palladium membrane.
Journal ArticleDOI
Simulation study of water gas shift reaction in a membrane reactor
TL;DR: In this paper, 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 in syngas mixtures.