Validation and Application of a Kinetic Model for Downdraft Biomass Gasification Simulation

Abstract

Biomass gasification is widely recognized as an effective method to obtain renewable energy. To accurately predict the syngas and tar compositions is a challenge. A chemical reaction kinetics model based on comprehensive gasification kinetics is proposed to simulate downdraft biomass gasification. The kinetic model is validated by direct comparison to experimental results of two downdraft gasifiers available in the literature and is found to be more accurate than the widely used Gibbs energy-minimizing model (GEM model). The kinetic model is then applied to investigate the effects of equivalence ratio (ER), gasification temperature, biomass moisture content, and biomass composition on syngas and tar production. Accurate water-gas shift and CO shift reaction kinetics are found critical to achieve good agreement with experimental results.

Department(s)

Chemical and Biochemical Engineering

Research Center/Lab(s)

Center for Research in Energy and Environment (CREE)

Second Research Center/Lab

Center for High Performance Computing Research

Comments

The authors gratefully acknowledge financial support from the Wayne and Gayle Laufer Endowment.

Keywords and Phrases

Biomass Gasification; Downdraft Gasifier; Gasification; Reaction Kinetics

International Standard Serial Number (ISSN)

0930-7516

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2019 Wiley-VCH Verlag, All rights reserved.

Publication Date

01 Dec 2019

Link to Full Text

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