The publication addresses the combustion of crude biomass derived oils in gas turbines The use of Fast Pyrolysis Bio-Oil (FPBO) as fuel was studied in a small scale non-regenerated micro gas turbine, set up in a dedicated test rig. The system includes a dedicated injection line and a modiﬁed combustor to burn eﬃciently high volume fractions of FPBO-in-ethanol solution. The eﬀect of the larger combustor volume improved the quality of the combustion of the reference diesel oil and pure ethanol as regards exhaust emissions, while maintaining unchanged fuel consumptions of the original conﬁguration. Tests with 20/80 and 50/50% (volume fractions) of FPBO/ethanol blends showed successfully and stable engine operation. By increasing the FPBO volume fraction in the fuel blend, an increase in CO emissions was observed - probably due to the larger droplets derived from the more viscous fuel - as well as in NOX emissions - probably due to fuel-bound nitrogen. Considering the proposedmodiﬁcationsandFPBO/ethanol blend asfuel,the enginereached anoverallelectrical eﬃciency higher than that measured with benchmark diesel fuel. A ﬁnal run with 100% FPBO feeding showed unstablecombustionwiththepresenceofcarbondepositsinthehotpartsofthesystem,showingthatthepresent conﬁguration requires further modiﬁcations to achieve this goal. Guidelines were provided for the implementation of further upgraded solutions for MGTs towards viscous, acidic and aqueous fuels feeding.
|Titolo:||Combustion of fast pyrolysis bio-oil and blends in a micro gas turbine|
|Data di pubblicazione:||2018|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1016/j.biombioe.2018.04.020|
|Appare nelle tipologie:||1.1 Articolo in rivista|