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Simulation of steam gasification in a fluidized bed reactor with energy self-sufficient condition
Suwatthikul, A. Limprachaya, S. Kittisupakorn, P.
Suwatthikul, A.
Limprachaya, S.
Kittisupakorn, P.
Publication Date
2017-03-06
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© 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is
an open access article distributed under the terms and conditions of the Creative Commons
Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/)
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openAccess
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2017-03-02
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Abstract
The biomass gasification process is widely accepted as a popular technology to produce fuel for the application in gas turbines and Organic Rankine Cycle (ORC). Chemical reactions of this process can be separated into three reaction zones: pyrolysis, combustion, and reduction. In this study, sensitivity analysis with respect to three input parameters (gasification temperature, equivalence ratio, and steam-to-biomass ratio) has been carried out to achieve energy self-sufficient conditions in a steam gasification process under the criteria that the carbon conversion efficiency must be more than 70%, and carbon dioxide gas is lower than 20%. Simulation models of the steam gasification process have been carried out by ASPEN Plus and validated with both experimental data and simulation results from Nikoo & Mahinpey (2008). Gasification temperature of 911 °C, equivalence ratio of 0.18, and a steam-to-biomass ratio of 1.78, are considered as an optimal operation point to achieve energy self-sufficient condition. This operating point gives the maximum of carbon conversion efficiency at 91.03%, and carbon dioxide gas at 15.18 volumetric percentages. In this study, life cycle assessment (LCA) is included to compare the environmental performance of conventional and energy self-sufficient gasification for steam biomass gasification.
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Published version
Citation
Suwatthikul A, Limprachaya S, Kittisupakorn P et al (2017) Simulation of steam
gasification in a fluidized bed reactor with energy self-sufficient condition. Energies. 10(3).
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Article