Characterization of aggregate behaviors of torrefied biomass as a function of reaction severity

Journal article


Barr, M., Kung, K. S., Thengane, S. K., Mohan, V., Sweeney, D. and Ghoniem, A. F. (2020). Characterization of aggregate behaviors of torrefied biomass as a function of reaction severity. Fuel. 266, p. 117152. https://doi.org/10.1016/j.fuel.2020.117152
AuthorsBarr, M., Kung, K. S., Thengane, S. K., Mohan, V., Sweeney, D. and Ghoniem, A. F.
Abstract

Several studies have shown that torrefaction can improve various characteristics of biomass, including grindability, flowability, and energy density, at least at the microscopic level. Furthermore, the improvements are often represented as a monotonic function of the torrefaction severity. However, the existing literature is less clear on whether or not these improvements persist at the aggregate level. This paper demonstrates that, at the aggregate level, using differently torrefied biomass in an experimental cookstove as a case study, the relationship between the improvements and torrefaction severity tells a much more complex story than a simple, monotonic correlation. Notably, by defining and measuring various cookstove performance characteristics ranging from stove temperature, effective heat output, and emission profiles, and how these characteristics vary with the severity of torrefied fuel, we conclude that, contrary to the conventional wisdom, more severe torrefaction in many cases does not always lead to more improved fuel characteristics.

KeywordsBiomass torrefaction; Cooking fuel; Binder; Emissions; Combustion; Briquette
Year2020
JournalFuel
Journal citation266, p. 117152
PublisherElsevier
ISSN0016-2361
Digital Object Identifier (DOI)https://doi.org/10.1016/j.fuel.2020.117152
Web address (URL)https://www.sciencedirect.com/science/article/pii/S0016236120301472
Publication dates
Print15 Apr 2020
Online28 Jan 2020
Publication process dates
Accepted19 Jan 2020
Deposited29 Aug 2023
Accepted author manuscript
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File Access Level
Open
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