FCC coprocessing oil sands heavy gas oil and canola oil. 1. Yield structure

Ng, Samson; Al-Sabawi, Mustafa; Wang, Jinsheng; Ling, Hao; Zheng, Ying; Wei, Qiang; Ding, Fang; Little, E C

doi:10.1016/j.fuel.2015.03.077

Cited by 23 publications

(11 citation statements)

References 14 publications

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“…Higher temperature can shift over-cracking to a lower conversion. The above observation agrees well with our previous finding [14]. Figure 4b also confirms the superior performance of the 75% feed, which gives the highest gasoline yield, as well as the order of performance of all five feeds at a given temperature.…”

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confidence: 92%

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Virgin Heavy Gas Oil from Oil Sands Bitumen as FCC Feed

Heshka

Zheng

et al. 2020

Catalysts

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This study deals with a systematic investigation of the fluid catalytic cracking (FCC) performance of a bitumen-derived virgin heavy gas oil (HGO) in the presence of its counterpart from bitumen-derived synthetic crude oil (SCO). The objective is to determine the amelioration effect on yield and product slate by the addition of the premium SCO HGO. The 343–525 °C cut virgin bitumen HGO was obtained from distillation of a raw Athabasca oil sands bitumen. It was then blended with different amounts of the 343 °C+ fraction of commercial SCO. Four HGO blends were prepared containing 75, 64, 61, and 48 v% of SCO HGO. Each HGO blend, as well as 100% SCO HGO, were catalytically cracked at 500 and 520 °C using a bench-scale Advanced Cracking Evaluation (ACE) unit. The results show acceptable FCC performance of bitumen virgin HGO when an adequate amount of SCO HGO is added. However, the resulting liquid product may need some quality improvement before use. Several observations, including catalyst poisoning by feed nitrogen and the refractory nature of virgin HGO, are evident and help to explain some observed cracking phenomena.

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confidence: 92%

“…A reaction unit called the "Advanced Cracking Evaluation" (ACE) unit, supplied by Kayser Technologies (Houston, TX, USA), was used in this work. A detailed description of this unit and its operation have been reported previously [14,[17][18][19].…”

Section: Apparatusmentioning

confidence: 99%

Virgin Heavy Gas Oil from Oil Sands Bitumen as FCC Feed

Heshka

Zheng

et al. 2020

Catalysts

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“…The hydrotreating with hydrogen of most vegetable oils in the presence of metal oxide catalysts, leads to the production of a liquid blend of C15-C18 hydrocarbons, exhibiting a boiling point within the range of diesel, so that it is commonly called "green diesel", "renewable diesel", or "bio-hydrogenated diesel", and therefore with the same chemical behavior that petroleum-derived diesel. This technology has been extended to the application of hydrocracking treatments to mixtures of vegetable oils with fractions of heavy petroleum crude, of equivalent molecular weights in conventional oil refineries [355][356][357][358][359][360][361][362][363][364][365][366][367][368][369][370][371][372][373][374]. Therefore, this procedure makes possible to transform triglycerides into high quality diesel fuel, with the facilities already available in conventional oil refineries, using specific catalysts.…”

Section: Fossil Diesel-like Biofuels: Green Diesel From Hydrotreated mentioning

confidence: 99%

Biodiesel at the Crossroads: A Critical Review

et al. 2019

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The delay in the energy transition, focused in the replacement of fossil diesel with biodiesel, is mainly caused by the need of reducing the costs associated to the transesterification reaction of vegetable oils with methanol. This reaction, on an industrial scale, presents several problems associated with the glycerol generated during the process. The costs to eliminate this glycerol have to be added to the implicit cost of using seed oil as raw material. Recently, several alternative methods to convert vegetable oils into high quality diesel fuels, which avoid the glycerol generation, are being under development, such as Gliperol, DMC-Biod, or Ecodiesel. Besides, there are renewable diesel fuels known as “green diesel”, obtained by several catalytic processes (cracking or pyrolysis, hydrodeoxygenation and hydrotreating) of vegetable oils and which exhibit a lot of similarities with fossil fuels. Likewise, it has also been addressed as a novel strategy, the use of straight vegetable oils in blends with various plant-based sources such as alcohols, vegetable oils, and several organic compounds that are renewable and biodegradable. These plant-based sources are capable of achieving the effective reduction of the viscosity of the blends, allowing their use in combustion ignition engines. The aim of this review is to evaluate the real possibilities that conventional biodiesel has in order to success as the main biofuel for the energy transition, as well as the use of alternative biofuels that can take part in the energy transition in a successful way.

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“…For comparison, the base oil (pure HGO) was also cracked under the same conditions. Table 2 gives the conversion and yield data which have been discussed in detail previously 20 . In cracking the blend, assuming there is no interference between the two components, the apparent yields contributed by each can be calculated arithmetically.…”

Section: Normalized Yields and Conversionmentioning

confidence: 99%

Laboratory Production of Biofuels and Biochemicals from a Rapeseed Oil through Catalytic Cracking Conversion

Shi

Heshka

et al. 2016

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The work is based on a reported study which investigates the processability of canola oil (bio-feed) in the presence of bitumen-derived heavy gas oil (HGO) for production of transportation fuels through a fluid catalytic cracking (FCC) route. Cracking experiments are performed with a fully automated reaction unit at a fixed weight hourly space velocity (WHSV) of 8 hr(-1), 490-530 °C, and catalyst/oil ratios of 4-12 g/g. When a feed is in contact with catalyst in the fluid-bed reactor, cracking takes place generating gaseous, liquid, and solid products. The vapor produced is condensed and collected in a liquid receiver at -15 °C. The non-condensable effluent is first directed to a vessel and is sent, after homogenization, to an on-line gas chromatograph (GC) for refinery gas analysis. The coke deposited on the catalyst is determined in situ by burning the spent catalyst in air at high temperatures. Levels of CO2 are measured quantitatively via an infrared (IR) cell, and are converted to coke yield. Liquid samples in the receivers are analyzed by GC for simulated distillation to determine the amounts in different boiling ranges, i.e., IBP-221 °C (gasoline), 221-343 °C (light cycle oil), and 343 °C+ (heavy cycle oil). Cracking of a feed containing canola oil generates water, which appears at the bottom of a liquid receiver and on its inner wall. Recovery of water on the wall is achieved through washing with methanol followed by Karl Fischer titration for water content. Basic results reported include conversion (the portion of the feed converted to gas and liquid product with a boiling point below 221 °C, coke, and water, if present) and yields of dry gas (H2-C2's, CO, and CO2), liquefied petroleum gas (C3-C4), gasoline, light cycle oil, heavy cycle oil, coke, and water, if present.

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FCC coprocessing oil sands heavy gas oil and canola oil. 1. Yield structure

Cited by 23 publications

References 14 publications

Virgin Heavy Gas Oil from Oil Sands Bitumen as FCC Feed

Virgin Heavy Gas Oil from Oil Sands Bitumen as FCC Feed

Biodiesel at the Crossroads: A Critical Review

Laboratory Production of Biofuels and Biochemicals from a Rapeseed Oil through Catalytic Cracking Conversion

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