Investigation of Biomass Gasification Process with Torrefaction Using Equilibrium Model

Abstract The aim of the biomass gasification process is syngas production. It is a complicated chemical process during which fuel goes through pyrolysis, oxidation and reduction stages. Syngas composition and process behaviour depends on many different factors. Gasifier design, fuel properties and gasifier operation settings have dominant influence. This study presents a model to simulate the gasification process and describe biofuel moisture effect on process efficiency. Biomass torrefaction possibilities before gasification process were investigated. Acquired heat from the syngas cooling was used for torrefaction process in the model. Results show that the total efficiency of the gasification process can be increased using biomass torrefaction. However, there is some critical point of fuel moisture content when application of torrefaction process is reasonable.

[1]  Vladan Karamarkovic,et al.  Energy and exergy analysis of biomass gasification at different temperatures , 2010 .

[2]  P. Lv,et al.  An experimental study on biomass air-steam gasification in a fluidized bed. , 2004, Bioresource technology.

[3]  Kit Ling Chin,et al.  Optimization of torrefaction conditions for high energy density solid biofuel from oil palm biomass and fast growing species available in Malaysia , 2013 .

[4]  Chao Gai,et al.  Experimental study on non-woody biomass gasification in a downdraft gasifier , 2012 .

[5]  Kj Krzysztof Ptasinski,et al.  Biomass upgrading by torrefaction for the production of biofuels: A review , 2011 .

[6]  K. N. Seetharamu,et al.  Prediction of performance of a downdraft gasifier using equilibrium modeling for different biomass materials , 2001 .

[7]  Hojat Ghassemi,et al.  Effects of various operational parameters on biomass gasification process; a modified equilibrium model , 2014 .

[8]  Peter McKendry,et al.  Energy production from biomass (Part 3): Gasification technologies. , 2002, Bioresource technology.

[9]  S. P. Singh,et al.  Stoichiometric, mass, energy and exergy balance analysis of countercurrent fixed-bed gasification of post-consumer residues , 2004 .

[10]  S. Salvador,et al.  Impact of torrefaction on syngas production from wood , 2009 .

[11]  Silvio de Oliveira,et al.  Exergy analysis of sugarcane bagasse gasification , 2007 .

[12]  Murad A. Rahim,et al.  Techno-Environmental Assessment Of Co-Gasification Of Low-Grade Turkish Lignite With Biomass In A Trigeneration Power Plant , 2014 .

[13]  Po Chih Kuo,et al.  Gasification performances of raw and torrefied biomass in a downdraft fixed bed gasifier using thermodynamic analysis , 2014 .

[14]  Carlos Roberto Altafini,et al.  Prediction of the working parameters of a wood waste gasifier through an equilibrium model , 2003 .

[15]  Juan F. Pérez,et al.  Effect of biomass particle size and air superficial velocity on the gasification process in a downdraft fixed bed gasifier. An experimental and modelling study , 2008 .

[16]  Sudip Ghosh,et al.  Gasification of biomass in a fixed bed downdraft gasifier--a realistic model including tar. , 2012, Bioresource technology.

[17]  D. F. Stewart,et al.  Computer simulation of a downdraft wood gasifier for tea drying , 2003 .

[18]  Kj Krzysztof Ptasinski,et al.  More efficient biomass gasification via torrefaction , 2006 .