Equilibrium prediction of CO2 reforming of coke oven gas: Suitability for methanol production

A thermodynamic study of the equilibrium of the CO2 reforming of coke oven gas (COG) was carried out with the aid of Aspen Plus® software. The influence of various operation conditions (temperature, pressure, COG composition and CO2/CH4 ratio) upon different parameters (conversions, yields, outlet c...

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Bibliographic Details
Published in:Chemical engineering science 2012-09, Vol.82, p.95-103
Main Authors: Bermúdez, J.M., Arenillas, A., Menéndez, J.A.
Format: Article
Language:English
Subjects:
Applied sciences
Aspen-Plus
byproducts
carbon
Catalysis
Catalytic reactions
Chemical engineering
Chemistry
Coke oven gases
computer software
Energy
Environment
Exact sciences and technology
General and physical chemistry
hydrocarbons
methanol
Methanol synthesis
prediction
Reactors
Simulation
temperature
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Summary:A thermodynamic study of the equilibrium of the CO2 reforming of coke oven gas (COG) was carried out with the aid of Aspen Plus® software. The influence of various operation conditions (temperature, pressure, COG composition and CO2/CH4 ratio) upon different parameters (conversions, yields, outlet composition, carbon production, by-products) was studied in order to evaluate the suitability of the process for producing a synthesis gas appropriate for methanol production. It was established that it is necessary to work at temperatures higher than 800°C, at the lowest possible pressures and in stoichiometric conditions of CH4 and CO2. It was also found that the presence of light hydrocarbons in the COG gives rise to a syngas that is more suitable for methanol production than when they are absent. However, they were also observed to promote deactivation of the catalyst. [Display omitted] ► The CO2 reforming of coke oven gas was studied using Aspen Plus software. ► The syngas produced was found to be suitable for methanol synthesis. ► Stoichiometric conditions of CH4/CO2 are mandatory for obtaining a suitable syngas. ► Temperatures above 800°C and the lowest possible pressures are preferred. ► Presence of C2Hx improves syngas quality but promotes catalyst deactivation.
ISSN:0009-2509
1873-4405
DOI:10.1016/j.ces.2012.07.012