Catalytic cracking of raw bio-oil under FCC unit conditions over different zeolite-based catalysts

• Published in: Journal of industrial and engineering chemistry (Seoul, Korea) 2019, 78(0), , pp.372-382
• Main Authors: Ibarra, Álvaro, Hita, Idoia, Azkoiti, Miren J., Arandes, José M., Bilbao, Javier
• Format: Article
• Language: English
• Subjects: Catalytic cracking; Deoxygenation; FCC; Gasoline; Raw bio-oil; Zeolite; 화학공학
• ISSN: 1226-086X; 1876-794X
• DOI: 10.1016/j.jiec.2019.05.032

[Display omitted] •FCC unit conditions are suitable for producing fuels from raw bio-oil.•Liquid hydrocarbon yields of 11.3–14.3wt% (in a dry basis) were attained.•Shape selectivity of zeolites determines process selectivity and fuel composition.•Oxygenated compounds in bio-oil present very different reactivity.•Water in bio-oil attenuates coke formation. The performance of different zeolite-based catalysts (HY, HZSM-5 and HBeta) on the catalytic cracking of bio-oil has been explored, using a simulated riser reactor and resembling industrial FCC conditions. The effect of the C/O (catalyst/bio-oil) ratio and the zeolite types have been assessed. The level of deoxygenation is >61% (increasing with C/O ratio). Total hydrocarbon yield was higher for the HBeta catalyst (56wt%), while the liquid hydrocarbons yields were relatively similar for all catalysts, obtaining higher gasoline yields with the HY catalyst (46–55wt%), and higher LPG yields with the HZSM-5 catalyst (12–14wt%) due to its higher acidity. The HY zeolite produced more coke (4–7wt%) given its capacity for retaining coke precursors within its micropores.