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2018 | OriginalPaper | Chapter

Oxy-fuel Combustion of Wheat Straw Pellets in a Lab-Scale Fluidized Bed Combustor

Authors : Monika Kosowska-Golachowska, Henryk Otwinowski, Krzysztof Wolski, Agnieszka Kijo-Kleczkowska, Tomasz Musiał, Katarzyna Środa, Damian Richter

Published in: Renewable Energy Sources: Engineering, Technology, Innovation

Publisher: Springer International Publishing

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Abstract

This paper presents an experimental study on agro biomass pellets combustion in a circulating fluidized bed (CFB) under three oxy-fuel conditions (21%O₂/79%CO₂, 30%O₂/70%CO₂ and 40%O₂/60%CO₂) and air–fuel condition. The combustion of wheat straw pellets was conducted at a temperature of 850 °C in a 12 kW lab-scale CFB combustor. The main objective of this study was to investigate the combustion behaviour of wheat straw, in terms of particle temperature profiles, ignition time, volatiles combustion time and burnout time. The results of the tests show that the composition of the oxidizing atmosphere highly influences the combustion process of biomass fuels. Replacing N₂ in the combustion environment by CO₂ caused slight delay in the combustion of wheat straw pellets. The combustion process in O₂/CO₂ mixtures at 30 and 40% O₂ is faster and shorter than that at lower O₂ concentrations.

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Title: Oxy-fuel Combustion of Wheat Straw Pellets in a Lab-Scale Fluidized Bed Combustor
Authors: Monika Kosowska-Golachowska
Henryk Otwinowski
Krzysztof Wolski
Agnieszka Kijo-Kleczkowska
Tomasz Musiał
Katarzyna Środa
Damian Richter
Publisher: Springer International Publishing
Book: Renewable Energy Sources: Engineering, Technology, Innovation
Print ISBN: 978-3-319-72370-9

Electronic ISBN: 978-3-319-72371-6

Copyright Year: 2018
DOI: https://doi.org/10.1007/978-3-319-72371-6_36