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Validation and Application of a Kinetic Model for Downdraft Biomass Gasification Simulation
Author(s) -
Smith Joseph D.,
Alembath Anand,
Al-Rubaye Haider,
Yu Jia,
Gao Xi,
Golpour Hassan
Publication year - 2019
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201900304
Subject(s) - syngas , tar (computing) , biomass gasification , biomass (ecology) , renewable energy , kinetic energy , kinetics , environmental science , process engineering , thermodynamics , chemistry , waste management , pulp and paper industry , biofuel , computer science , engineering , catalysis , organic chemistry , physics , oceanography , electrical engineering , quantum mechanics , programming language , geology
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.