Fractional Condensation of Fast Pyrolysis Bio-Oil to Improve Biocrude Quality towards Alternative Fuels Production
نویسندگان
چکیده
Fast pyrolysis of biomass is a well-known opportunity for sustainable alternative fuel production transport and energy. However, bio-oils from are viscous, acidic bio-crudes that need further steps upgrading before being used either as fuels or chemicals. A process complementary to bio-oil hydrotreatment co-processing consists optimizing tuning the upstream condensation fast separate concentrate selected classes compounds. This can be implemented by varying temperatures in multi-step unit. In this study, fractional vapors pinewood has been applied bubbling fluidized bed reactor 1 kg h−1 feed. The was operated at 500 °C connected downstream interchangeable Tests were performed using two different condensing layouts: (1) series spray condensers tube-in-tube water-jacketed condenser, referred an intensive cooler; (2) electrostatic precipitator cooler. Using first configuration, which focus high boiling point compounds—such sugars lignin-derived oligomers—were condensed higher stage (100–170 °C), while water-soluble lighter compounds most water lower thus largely removed bio-oil. stages, content remained below 7% mass (and therefore, oil’s calorific reached 22 MJ kg−1) achieving about 43% liquid yield, compared 55% single-step runs. Results finally elaborated perform preliminary energy assessment whole system toward potential upscaling approach. proposed layout showed significant step, simplifying stages
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ژورنال
عنوان ژورنال: Applied sciences
سال: 2022
ISSN: ['2076-3417']
DOI: https://doi.org/10.3390/app12104822