An experimental study to investigate the effect of torrefaction temperature on the kinetics of gas generation

Dhanavath, K, Bankupalli, S, Bhargava, S and Parthasarathy, R 2018, 'An experimental study to investigate the effect of torrefaction temperature on the kinetics of gas generation', Journal of Environmental Chemical Engineering, vol. 6, no. 2, pp. 3332-3341.


Document type: Journal Article
Collection: Journal Articles

Title An experimental study to investigate the effect of torrefaction temperature on the kinetics of gas generation
Author(s) Dhanavath, K
Bankupalli, S
Bhargava, S
Parthasarathy, R
Year 2018
Journal name Journal of Environmental Chemical Engineering
Volume number 6
Issue number 2
Start page 3332
End page 3341
Total pages 10
Publisher Elsevier BV
Abstract Pre-treatment of biomass using torrefaction has been demonstrated to be an efficient process to improve the physical and chemical properties of biomass that can be used as a promising feedstock for gasification and boilers. Karanja, neem, kusum, mahua, and microalgae were the five biomass feedstocks investigated in this work for the torrefaction pre-treatment. The experimental study of torrefaction was carried out in a vertical fixed bed reactor set-up at 200, 250, and 300°C under nitrogen atmosphere. A thorough analysis of gas, liquid and solid products was made and the changes in H/C and O/C ratios in the pre-treated biomass were analyzed by elemental analysis. Among the five biomass feedstocks studied, mahua was found to have the highest heating value of 27.73MJ/kg at 300°C compared to others (neem=19MJ/kg, Karanja=23.3MJ/kg, kusum=25.8MJ/kg, microalgae=26.7MJ/kg). Following a detailed kinetic analysis using the yield of product gas mixtures, it is concluded that the biogases are generated by parallel independent first-order reactions. Also, the activation energy values for the torrefaction reactions of five biomass feedstocks were found to be different from each other.
Subject Non-automotive Combustion and Fuel Engineering (incl. Alternative/Renewable Fuels)
Chemical Engineering not elsewhere classified
Keyword(s) Biogas
Kinetics
Solid waste
Thermochemical conversion
Torrefaction
DOI - identifier 10.1016/j.jece.2018.05.016
Copyright notice © 2018 Elsevier Ltd
ISSN 2213-3437
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