Title:
Combustion of Olive Tree Pruning Pellets versus Exhausted Olive Cake at Industrial Boiler. Monitoring of Emissions and Combustion Efficiency
Author(s):
Kougioumtzis, M.A., Kanaveli, I.-P., Karampinis, E., Grammelis, P., Kakaras, E.
Document(s):
Paper
Slide presentation
Abstract:
The aim of the present paper is to compare the combustion behaviour of solid biofuels suitable for industrial applications: olive tree pruning (OTP) pellets and exhausted olive cake. The combustion is performed in operating conditions at one industrial fixed bed biomass boiler (0.5 MWth capacity) used to cover the heating demands of an olive mill. Combustion tests are performed at the industrial boiler for three consecutive days. During the first day the reference fuel (exhausted olive cake), that is normally used in the olive mill, is monitored whereas in the second and third day, the OTP pellets and a mixture of pellets and pulverized OTP respectively are combusted and monitored for emissions. Monitoring of emissions in terms of dust, CO, CO2, NOx, SO2, HCl and OGC emissions was performed and compared for each different fuel used. Furthermore, the boiler efficiency for each biofuel was calculated for evaluating the combustion performance of them. The combustion of the OTP fuels led to lower HCl emissions but increased CO and OGC emissions, while the ash formation exhibited signs of reduced slagging. For all fuels the high dust emissions highlighted the need for particle emission abatement equipment installation, while the behaviour of the boiler efficiency was directly linked to the air excess ratio, indicating that improved automated boiler controls are needed.
Keywords:
agricultural residues, biomass, emissions, olive tree, agropellet
Topic:
Biomass Technologies and Conversion for Bioenergy
Subtopic:
Biomass and bioliquids combustion for small and medium scale applications
Event:
28th European Biomass Conference and Exhibition
Session:
2AO.8.1
Pages:
275 - 279
ISBN:
978-88-89407-20-2
Paper DOI:
10.5071/28thEUBCE2020-2AO.8.1
Price:
FREE
