Abstract
Bio-oil, also called pyrolysis liquid biofuel, is made from the pyrolysis of waste biomass and provides a carbon-neutral alternative fuel. This study focuses on optimizing swirl burners for use with bio-oil. Spray combustion of bio-oil/ethanol blends was previously studied using a 10 kW swirl burner. The previous burner had a small combustion chamber with no refractory lining. It was not feasible to stabilize flames of bio-oil without blending with ethanol, and the pollutant emissions were relatively high. In this study, the burner is upgraded by implementing a refractory-lined combustion chamber and increasing the size of the chamber to investigate the relationship between the burner design and combustion performance of bio-oil. The main reasons for upgrading the burner are to eliminate ethanol addition to bio-oil, stabilize the pure bio-oil flame, achieve lower pollutant emissions, and make the burner more comparable to industrial bio-oil burners. In addition to flame stability, fuel boiling inside the ...
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