Modelling co-combustion of wood and coal in circulating fluidised beds

Juan Adanez, Luis F. de Diego, Pilar Gayan, Francisco Garcia-Labiano, Andreas Cabanillas, Alberto Bahillo, Martti Aho, Kati Veijonen

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

In this work carbon combustion efficiencies in circulating fluidised bed combustors (CFBC) when cofiring biomass and coal mixtures were studied. Experimental results were obtained from the combustion of two kinds of coals with forest residue (pine bark) in two pilot plants (0.1 and 0.3 MW). The effect of operating conditions such as percentage of biomass in feed, temperature, excess air, air velocity, coal particle size distribution and percentage of secondary air on carbon combustion efficiency was analysed. A mathematical model to predict the behaviour of the co-combustion of coal and biomass in a CFBC has been developed. The developed model can predict the different gas concentrations along the riser (O2, CO, CH4, etc.) and the carbon combustion efficiency. The experimental results of carbon combustion efficiencies and gas emissions were compares with those predicted by the model and a good correlation was found for all the conditions tested.
Original languageEnglish
Title of host publicationChemical industry and environment IV
Subtitle of host publication4th European Meeting
PublisherUniversidad de Las Palmas de Gran Canaria
ISBN (Print)978-84-89528-60-4
Publication statusPublished - 2003
MoE publication typeA4 Article in a conference publication
Event4th European Meeting on Chemical Industry and Environment, EMChIE 2003 - Las Palmas de Gran Canaria, Spain
Duration: 12 Feb 200314 Feb 2003

Conference

Conference4th European Meeting on Chemical Industry and Environment, EMChIE 2003
CountrySpain
CityLas Palmas de Gran Canaria
Period12/02/0314/02/03

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    Adanez, J., de Diego, L. F., Gayan, P., Garcia-Labiano, F., Cabanillas, A., Bahillo, A., Aho, M., & Veijonen, K. (2003). Modelling co-combustion of wood and coal in circulating fluidised beds. In Chemical industry and environment IV: 4th European Meeting [Paper 14-98] Universidad de Las Palmas de Gran Canaria.