Assessment of Potential Impacts of Peach Kernels and Cardoon as Co-Firing Fuels with Lignite Through Experiments on Reactivity and Ash Behavior

Author(s): Despina Vamvuka*, Christos Avgoustidis, Antonios Stratakis, George Alevizos

Journal Name: Recent Innovations in Chemical Engineering
Formerly Recent Patents on Chemical Engineering

Volume 13 , Issue 5 , 2020


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Graphical Abstract:


Abstract:

Objective: The reactivity and combustion performance of mixtures of lignite with peach kernel and cardoon were investigated, through thermal analysis experiments, for assessing the potential impacts of these wastes as co-firing fuels.

Methods: Additionally, a control method was applied to reduce problematic elements from biomass ashes in order to mitigate deposition phenomena in co-firing units. The results showed that combustion performance of raw fuels followed the order cardoon>peach kernel>lignite, however in case of blends, this order was reversed lignite/peach kernel> lignite/cardoon, revealing synergistic effects between component fuels.

Results: The combustion performance of lignite was improved by blending it with biomass fuels. Deposition problems should be expected in boilers firing peach kernel and cardoon fuels above 900°C.

Conclusion: After alkalis leaching, the reactivity and efficiency of woody materials and mixtures with lignite were enhanced, while the slagging/fouling propensity was reduced.

Keywords: Combustion, lignite, biomass, blends, slagging/fouling, co-firing fuels.

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Article Details

VOLUME: 13
ISSUE: 5
Year: 2020
Published on: 21 January, 2021
Page: [353 - 365]
Pages: 13
DOI: 10.2174/2405520413999200623173617
Price: $65

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