Modified Thermodynamic Equilibrium Model for Biomass Gasification: A Study of the Influence of Operating Conditions

Maria Puig Arnavat, Juan Carlos Bruno, Alberto Coronas

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

This paper presents a mathematical model for biomass gasification processes developed in the equation solver program Engineering Equation Solver (EES) with an implemented user-friendly interface. It is based on thermodynamic equilibrium calculations and includes some modifications to be adapted to a real process, in which only a partial approach to chemical equilibrium is achieved. The model can be used to predict the producer gas composition, yield, and heating value for a certain biomass with a specific ultimate composition and moisture content. It has been validated with published experimental data from different authors for downdraft, fluidized-bed gasifiers and different biomasses, showing good agreement between reported data and modeled values. In addition, it has been used to evaluate the influence of different operating parameters [equivalence ratio (ER), air preheating, steam injection, and oxygen enrichment] on producer gas. The model predicts the behavior of different kinds of biomass and becomes a useful tool to simulate the biomass gasification process by allowing its integration in complete energy supply systems, such as co-generation plants.
Original languageEnglish
JournalEnergy & Fuels
Volume26
Issue number2
Pages (from-to)1385-1394
ISSN0887-0624
DOIs
Publication statusPublished - 2012

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