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Recent Innovations in Chemical Engineering

Editor-in-Chief

ISSN (Print): 2405-5204
ISSN (Online): 2405-5212

Research Article

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 and George Alevizos

Volume 13, Issue 5, 2020

Page: [353 - 365] Pages: 13

DOI: 10.2174/2405520413999200623173617

Price: $65

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.

Graphical Abstract
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