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TitleFCC coprocessing oil sands heavy gas oil and canola oil. 1. Yield structure
AuthorNg, S H; Al-Sabawi, M; Wang, J; Ling, H; Zheng, Y; Wei, Q; Ding, F; Little, E
SourceFuel vol. 156, 2015 p. 163-176, https://doi.org/10.1016/j.fuel.2015.03.077
Year2015
Alt SeriesNatural Resources Canada, Contribution Series 20180172
PublisherElsevier BV
Documentserial
Lang.English
Mediaon-line; digital
RelatedThis publication is related to Ng, S H; Heshka, N E; Lay, C; Little, E; Zheng, Y; Wei, Q; Ding, F; (2018). FCC coprocessing oil sands heavy gas oil and canola oil. 2. Gasoline hydrocarbon type analysis, Green Energy & Environment vol. 3 no. 3
File formatpdf
Subjectsfossil fuels; geochemistry; oil sands; heavy oil; gas; Canola oil; Fatty acids; Advanced Cracking Evaluation (ACE) unit; Gasoline precursors
Illustrationsdiagrams; graphs; tables
ProgramProgram of Energy Research and Development (PERD)
Released2015 04 07
AbstractReducing the carbon footprint or GHG emissions is a major challenge during the production and processing of Canadian oil sands bitumen for clean transportation fuels. Co-processing bitumen derived feeds and biomass may provide an alternative solution since the level of GHG emissions for producing renewable biofuels is considered significantly lower than that for fossil fuels. In many developed countries, it is required that biofuels replace from 6% to 10% of petroleum fuels in the near future. Co-processing biomass and bitumen feeds can use existing refining infrastructure and technologies, saving capital and operating costs. In addition, co-processing may generate synergies that improve gasoline and diesel qualities. The current study investigates the catalytic cracking performances of pure heavy gas oil (HGO) derived from oil sands synthetic crude and a mixture of 15 v% canola oil in HGO using a commercial equilibrium catalyst under typical FCC conditions. Cracking experiments were performed using a bench-scale Advanced Cracking Evaluation (ACE) unit at fixed weight hourly space velocity (WHSV) of 8 h-1, 490-530 °C, and catalyst/oil ratios of 4-12 g/g. Higher conversion, dry gas yield, and liquefied petroleum gas (LPG) yield were observed at a given catalyst/oil ratio when cracking the HGO/canola oil blend compared with pure HGO. The increase in dry gas yield can be attributed to the decarboxylation and decarbonylation reactions in the presence of triglycerides composed of fatty acids in the feed, leading to the formation of CO2 and CO. In general, at a given conversion, the addition of canola oil resulted in lower gasoline yield at the expense of water formation. As well, lower coke yield was observed for the blend. The relatively high nitrogen content in the feeds played an important role in catalyst activity and selectivity, particularly at low reaction temperatures.
Summary(Plain Language Summary, not published)
Reducing the carbon footprint or GHG emissions is a major challenge during the production and processing of Canadian oil sands bitumen for clean transportation fuels. Co-processing bitumen derived feeds and biomass may provide an alternative solution since the level of GHG emissions for producing renewable biofuels is considered significantly lower than that for fossil fuels. In many developed countries, it is required that biofuels replace from 6% to 10% of petroleum fuels in the near future. Co-processing biomass and bitumen feeds can use existing refining infrastructure and technologies, saving capital and operating costs. In addition, co-processing may generate synergies that improve gasoline and diesel qualities. The current study investigates the catalytic cracking performances of pure heavy gas oil (HGO) derived from oil sands synthetic crude and a mixture of 15 v% canola oil in HGO using a commercial equilibrium catalyst under typical FCC conditions. Cracking experiments were performed using a bench-scale Advanced Cracking Evaluation (ACE) unit at fixed weight hourly space velocity (WHSV) of 8 h 1, 490– 530 C, and catalyst/oil ratios of 4–12 g/g. Higher conversion, dry gas yield, and liquefied petroleum gas (LPG) yield were observed at a given catalyst/oil ratio when cracking the HGO/canola oil blend compared with pure HGO. The increase in dry gas yield can be attributed to the decarboxylation and decarbonylation reactions in the presence of triglycerides composed of fatty acids in the feed, leading to the formation of CO2 and CO. In general, at a given conversion, the addition of canola oil resulted in lower gasoline yield at the expense of water formation. As well, lower coke yield was observed for the blend.
GEOSCAN ID298903