Effect of Separating Air into Primary and Secondary in an Integrated Burner Housing on Biomass Combustion

Pellet burners, although they are commonly used devices, require high-quality fuels and yet are characterized by relatively high levels of CO and NO emissions and their variability. This article presents a combustion study of an original biomass burner that separates air into primary for biomass gas...

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Bibliographic Details
Published in:Energies (Basel) 2024-09, Vol.17 (18), p.4648
Main Authors: Kardaś, Dariusz, Wantuła, Michał, Pieter, Szymon, Kazimierski, Paweł
Format: Article
Language:English
Subjects:
Air pollution
Air quality management
Alternative energy sources
Biodiesel fuels
Biofuels
Biomass
biomass combustion
Biomass energy
Boilers
buffer zone
Climate change
Combustion
Efficiency
Emission standards
Emissions control
Energy resources
Environmental aspects
Flue gas
Fossil fuels
Optimization
Product development
Raw materials
reduction in CO emissions
Renewable resources
retort burner
secondary air
Wood
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Summary:Pellet burners, although they are commonly used devices, require high-quality fuels and yet are characterized by relatively high levels of CO and NO emissions and their variability. This article presents a combustion study of an original biomass burner that separates air into primary for biomass gasification and secondary for oxidizing the gasification products, with ducts placed in the housing of the burner. This study introduces a new burner design that separates air into primary and secondary streams within an integrated burner housing, aiming to optimize biomass combustion efficiency and reduce harmful emissions. Two burner designs were proposed, with a high secondary air nozzle (HCrown) and a low secondary air nozzle (LCrown). These two burners were compared with a typical retort burner (Ret). The LCrown burner reduced particulate matter emissions by 36% and CO emissions by 74% with respect to a typical retort burner. This study showed that the distance of the secondary air nozzles from the gasifying part has a significant impact on the operation of the burner and the possibility of reducing emissions of CO and NO. These results highlight the potential of the innovation to significantly improve combustion quality while simultaneously reducing environmental impact.
ISSN:1996-1073
1996-1073
DOI:10.3390/en17184648