Title:
Particle Emissions from Pine Pellets Combustion in a Small-Scale Domestic Boiler
Author(s):
Fernandes, U., Costa, M.
Document(s):
Paper
Abstract:
The main purpose of the present work was to quantify and characterize morphologically and chemically the emissions of particulate matter (PM) from a domestic pellet-fired boiler during steady-state operation for different boiler thermal inputs. The PM quantification was made with the aid of a low pressure three-stages cascade impactor and the PM characterization using SEM/EDS analysis (scanning electron microscope/energy dispersive X-ray spectrometry). The measured PM emissions varied between ˜ 160 mg/Nm3@13% O2 and ˜ 490 mg/Nm3@13% O2, being the emissions mainly dominated by particles with sizes below 2.5 µm and above 10 µm regardless of the thermal input. The SEM analyses revealed the presence of large agglomerates and separate spherical and irregularly shaped particles (soot), fine ash particles and organic matter on the PM surface. The chemical analyses indicate that the PM consists mainly of carbon and small amounts of Mg, Al, Ca and others elements. To improve the present understanding on the formation and emission of fine PM from domestic boilers, we are currently performing spatially resolved PM measurements from inside the boiler (reaction zone).
Keywords:
boiler, emissions, pellets
Topic:
Biomass Conversion Technologies for Heating, Electricity and Chemicals
Subtopic:
Combustion for small and medium scale applications
Event:
19th European Biomass Conference and Exhibition
Session:
VP2.1.11
Pages:
1240 - 1243
ISBN-13:
978-88-89407-55-4
ISBN-10:
88-89407-55-7
Paper DOI:
10.5071/19thEUBCE2011-VP2.1.11
Price:
FREE
