On the basic effects on the gas composition governed by the water-gas shift equilibrium

Dieter Förtsch

Energy, 2020, vol. 205, issue C

Abstract: The water-gas shift (WGS) reaction plays an important role in various syngas processes but also in gasification and fuel-rich combustion. In this paper, graphical representations of the key equations describing the gas composition governed by the WGS equilibrium are provided from a combustion perspective, and analytic solutions for the product ratios are given. These representations and solutions are helpful to distinguish and illustrate the basic effects of stoichiometry (molar H/C ratio and oxygen availability) and thermodynamics (temperature) on the WGS equilibrium composition. The developed graphical representations and analytical solutions are also useful for studying catalytic processes in which the WGS plays an important role. As an essential basis for this study, new simple correlations for the WGS equilibrium constant are proposed for different temperature ranges and compared with other correlations and data reported in literature.

Keywords: Water-gas shift equilibrium; Fuel-lean combustion; Gasification; Syngas processes (search for similar items in EconPapers)
Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:205:y:2020:i:c:s0360544220309907

DOI: 10.1016/j.energy.2020.117883

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