Development and verification of a simulation model for a non-isothermal water-gas shift reactor

Keiski, Riitta L.; Salmi, Tapio; Pohjola, Veikko J.

doi:10.1016/0300-9467(92)85003-r

Cited by 27 publications

(17 citation statements)

References 16 publications

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“…Based on the results of a literature survey, a Fe-Cr catalyst appears to fit the application of WGS best; and, a power-law type rate expression was preferred [17] extrapolated to the feed side pressure.…”

Section: Reaction Kineticsmentioning

confidence: 99%

Heat Dispersion Effects on the Functional Characteristics of Industrial‐scale Adiabatic Membrane Reactors

et al. 2004

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The influence of heat dispersion on the performance of adiabatic industrial-scale membrane reactors is studied in this work. The results presented are from the application of the model to a membrane reactor that is introduced in an IGCC plant, to control carbon dioxide emissions. The performance of this reactor equipped with highly selective membranes is studied in detail. The thermal phenomena that take place in the interior of the membrane reactor have a considerable influence on the operation of the reactor thus the assumption of isothermal operation is not valid. The omission of thermal dispersion results on the underestimation of the system operation and the total gaseous fluxes that permeate through the membrane. The temperature distribution in the membrane reactor differs significantly from the calculated distribution predicted from the model that ignores thermal dispersion effects.

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Section: Reaction Kineticsmentioning

confidence: 99%

Heat Dispersion Effects on the Functional Characteristics of Industrial‐scale Adiabatic Membrane Reactors

et al. 2004

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“…A typical exit stream composition of a steam reformer (SR) or autothermal reactor (ATR) consists of 25-75% H 2 , 1-15% CO, 5-20% CO 2 , 10-60% N 2 and a water-to-CO mole ratio between 2 and 15 [2]. The inlet conditions used in the simulations are summarized in Table 2.…”

Section: Reaction Rate Equations and Simulation Conditionsmentioning

confidence: 99%

“…Prior research efforts directed at improving the performance of the WGS reaction have focused on a broad range of issues including the development of better catalysts [2], [3,4], and heat and mass transfer studies in adiabatic/isothermal reactors [5]. In 1999, Tonkovich et al investigated microchannel reactors with small parallel flow paths (100-1000 m in width, with aspect ratios (channel height to width) between 1:1 and 100:1, and lengths of 1-10 cm) using monolithic catalysts fabricated on nickel foam monolith supports [1].…”

Section: Introductionmentioning

confidence: 99%

Parametric study of microreactor design for water gas shift reactor using an integrated reaction and heat exchange model

Kim

Mayor

2005

Chemical Engineering Journal

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“…Several researches have been interested in studying the chemical kinetics of this reaction. The mathematical expressions obtained corresponding to HT or LT catalysts often take the form of a power law model comprising a factor β taking into account the reverse reaction [10][11][12][13][14][15]. This power law is widely used in modelling and simulation studies, which are effective tools in the design, diagnosis and optimization of WGS reactors operation.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of a Water Gas Shift Fixed Bed Reactor Operating at Low Pressures

Bazi

Bideq

El-Abidi

et al. 2022

Bull. Chem. React. Eng. Catal.

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Today, hydrogen has become one of the most promising clean energy. Several processes allow obtaining hydrogen, among them there is the Water Gas Shift (WGS) reaction. On an industrial scale, WGS reaction takes place at high pressure [25–35 bar]. At high pressure, the cost of the process rises due to the energy consumed by compression, and the reduction in the lifetime of the equipment and the catalyst. At low pressures, catalyst lifetime can reach many years and the energy cost is reduced. It is for this reason that we are interested in modelling and simulation of a WGS converter operating at low pressures close to atmospheric pressure. In this work, a numerical study was conducted in order to determine the conditions allowing good rector operating at low pressure. A number of drawbacks of the process were identified. These drawbacks are essentially the non-negligible pressure drops and the strong intraparticle diffusion resistances. The prediction of the concentrations and the reaction rate within the pellet showed that the active zone of the pellet is located near the particle surface. It has also been shown that the resistances to interfacial mass and heat transfer are insignificant. The study of pressure effect showed that the pressure increase reduces the required catalyst mass to achieve equilibrium. Finally, this work revealed that the decrease in temperature and the increase in the concentrations of the reactants by increasing their fluxes, make it possible to increase the effectiveness factor of the catalyst and the conversion of carbon monoxide. Copyright © 2022 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

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Development and verification of a simulation model for a non-isothermal water-gas shift reactor

Cited by 27 publications

References 16 publications

Heat Dispersion Effects on the Functional Characteristics of Industrial‐scale Adiabatic Membrane Reactors

Heat Dispersion Effects on the Functional Characteristics of Industrial‐scale Adiabatic Membrane Reactors

Parametric study of microreactor design for water gas shift reactor using an integrated reaction and heat exchange model

Numerical Study of a Water Gas Shift Fixed Bed Reactor Operating at Low Pressures

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