Generalized Analysis of Gasifier Performance using Equilibrium Modeling

Title
Generalized Analysis of Gasifier Performance using Equilibrium Modeling
Authors
Anapagaddi RavikiranThiruvengadam RenganathanSubramaniam PushpavanamRavi Kumar Voolapalli조영상
Keywords
Plasma; Coal Gasification; Simulation
Issue Date
2012-02
Publisher
Industrial & engineering chemistry research
Citation
VOL 51, NO 4, 1601-1611
Abstract
Thermodynamic modeling of gasification process provides a quick estimate of performance of the gasifier. Most of the earlier work on thermodynamic modeling is restricted to a particular feedstock-gasification agent combination and hence the results cannot be generalized. In the present work, the equilibrium modeling based on Gibb’s free energy minimization approach is used to analyze the performance of gasification of any fuel using oxygen or steam. The performance is analyzed at the carbon boundary point at which the cold gas efficiency is maximum. The gasification temperature, amount of gasification agent required, composition of syngas, and cold gas efficiency are predicted using Aspen Plus. The results are presented as contour plots on Van Krevelen coordinates (H/C vs O/C) and interpreted based on simplified gasification reactions. The performance for different feedstocks represented in Van Krevelen diagram is also analyzed. Finally, advantage of cogasification of feedstocks is highlighted.
URI
http://pubs.kist.re.kr/handle/201004/43071
ISSN
08885885
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KIST Publication > Article
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