A unified lumped approach in kinetic modeling of biomass pyrolysis

• Published in: Fuel (Guildford) Vol. 85; no. 9; pp. 1211 - 1220
• Main Authors: Radmanesh, Ramin, Courbariaux, Yann, Chaouki, Jamal, Guy, Christophe
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.06.2006; Elsevier
• Subjects: Applied sciences; Biomass; Energy; Exact sciences and technology; Gas evolution; Kinetic model; Natural energy; Pyrolysis; Pyrolysis; Kinetic model; Biomass; Gas evolution; Tar; Thermogravimetry; Devolatilization; Gas analysis; Modeling; Gas chromatography; Char; Kinetics; Performance
• ISSN: 0016-2361; 1873-7153
• DOI: 10.1016/j.fuel.2005.11.021

Thermogravimetry analysis and gas chromatography techniques are used at different heating rates (from 5 to 50 K/min) to map all the products and to develop suitable kinetic models of biomass pyrolysis. A three-independent-parallel-reactions model is used to model kinetic of total devolatilization. This part accounts for the total char yield and devolatilization time. The evolutions of condensable vapors (tar and H 2O) and non-condensable gases (H 2, CH 4, CO and CO 2) are also studied using gas chromatography technique. It is shown that the final total yield of gases increases by increasing the heating rate, whereas those of tar decrease by increasing heating rate. A kinetic model was then proposed and the parameters for that were calculated, which can predict the change of the gases yields at different heating rates. The performance of the kinetic models was evaluated for other experimental works available in the literature or by exposing the biomass to different heating program.