Solvent extraction of athabasca oil-sand in a rotating mill Part 1. Dissolution of bitumen

Meadus, F. W.; Chevrier, Peter John; Sparks, B.D.

doi:10.1016/0378-3820(82)90007-8

Cited by 18 publications

(16 citation statements)

References 6 publications

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“…The water is added to trigger the generation of spherical agglomerates, allowing bitumen to be extracted and the production of agglomerates of fine solids. The agglomerated solids are efficiently separated from the solvent–bitumen fluid by a series of liquid–solid separation steps (tumbler, thickener, agglomerate washing on belt filter, and filtration) at ambient conditions. − …”

Section: Technological Methodsmentioning

confidence: 99%

“…The recovery of trapped solvent from microagglomerates was understood to be easier . The amount of residual solvent in dried tailings would be controlled to 0.1 wt % or less …”

Section: Technological Methodsmentioning

confidence: 99%

“…In gravitational separations, the extraction of oil sand bitumen with an aliphatic solvent or analogue such as pentane, hexane, or heptane often produces relatively clean product with low solids content in bitumen. − ,− ,− ,− Depending on its carbon number and S/B, an aliphatic solvent has controlled ability to precipitate out partially or completely the heaviest fraction of bitumen, the asphaltenes. − Asphaltenes readily form floc networks, entrapping and capturing unwanted particulates and heavy metals, so asphaltenes and fines are separated from the extracted bitumen together . For example, Zahabi et al showed that the removal of solid particles in oil started effectively at the onset of minimal asphaltene precipitation .…”

Section: Selection Of Solventmentioning

confidence: 99%

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Recent Advances in Nonaqueous Extraction of Bitumen from Mineable Oil Sands: A Review

Lin

Stoyanov

2017

Org. Process Res. Dev.

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Investigations of nonaqueous extraction (NAE) of bitumen from minable oil sands have been extensively revisited in the past decade as an alternative to Clark hot water extraction (CHWE). Significant advances have been achieved in understanding NAE processes at bench and pilot scales, although many questions remain regarding the commercialization of NAE. This critical review summarizes recent research findings and progress on fundamental and practical aspects associated with novel extraction processes, focusing on the technological method, solvent selection, recovery of solvent, and removal of fines. The review also identifies opportunities and challenges for bitumen recovery from oil sands using nonaqueous processes.

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Section: Technological Methodsmentioning

confidence: 99%

“…The recovery of trapped solvent from microagglomerates was understood to be easier . The amount of residual solvent in dried tailings would be controlled to 0.1 wt % or less …”

Section: Technological Methodsmentioning

confidence: 99%

Section: Selection Of Solventmentioning

confidence: 99%

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Recent Advances in Nonaqueous Extraction of Bitumen from Mineable Oil Sands: A Review

Lin

Stoyanov

2017

Org. Process Res. Dev.

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“…Solvent extraction of bitumen as an alternative technology to the current warm water extraction process offers high bitumen recovery (> 90 %) from a range of ores . Several promising solvents have been identified including aromatics, n ‐alkanes, and cycloalkanes .…”

Section: Introductionmentioning

confidence: 99%

“…[1] Solvent extraction of bitumen as an alternative technology to the current warm water extraction process offers high bitumen recovery (> 90 %) from a range of ores. [3][4][5][6][7][8][9][10][11][12][13][14][15] Several promising solvents have been identified including aromatics, n-alkanes, and cycloalkanes. [11,12,15] The extraction gangue, a mixture of sands and fine solids after solvent extraction, is almost dry and can be stacked, allowing for fast reclamation of the mining site.…”

Section: Introductionmentioning

confidence: 99%

Sorption equilibrium and kinetics for cyclohexane, toluene, and water on Athabasca oil sands solids

et al. 2016

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The sorption of solvents from the vapour phase to solid substrates is important in producing heavy oil and bitumen, particularly from the oil sands. We investigated the sorption and desorption equilibrium and kinetics of cyclohexane, toluene, and water on kaolinite, fine solids, and organic‐rich fine solids isolated from Athabasca oil sands over a wide range of solvent vapour concentrations using a gravimetric method. The isotherms for both adsorption and desorption of solvent vapour were determined, and the Brunauer‐Emmett‐Teller equation was used to fit the experimental data. The initial kinetic rate constants for the adsorption and desorption of solvent vapour were determined with the linear driving force model. The results were compared and discussed in terms of the type of solvent, the content of organic materials, and the surface area of the solid substrates. The results suggest that, in addition to the adsorption of solvent on mineral surfaces, the contribution from solvent partitioning in the organic materials and the porosity resulting from high amounts of organic materials are significant factors for solvent uptake and kinetic rate constants. In mixed solvent vapours, the competitive sorption of water and cyclohexane was observed in the solid substrates. However, the degree of competitiveness decreased with an increase in the content of organic materials in the substrates.

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Kinetics of bitumen extraction from oil sands using organic solvents

et al. 2022

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The kinetic study of bitumen extraction from oil sands is significant for efficiency improvement and reactor design in industrial applications. Here, an improved pseudo‐first‐order kinetic model was established with the assumption of a constant Sherwood number, which took into account the mass transfer area. Five organic solvents were used for the extraction kinetics of the prepared bitumen microbeads. The improved pseudo‐first‐order kinetic model exhibited excellent fitting effects. Petroleum ether/dichloromethane was proved to be the best solvent. The results also showed an exponential decrease in the diameter of the bitumen microbeads and a linear increase in mass transfer coefficients with time for all the solvents. The kinetics of bitumen extraction from oil sands using different solvents were predicted according to the corresponding average mass transfer coefficients. The experimental results confirmed that the improved kinetic model was capable of describing the mass transfer process of bitumen extraction from oil sands.

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Solvent extraction of athabasca oil-sand in a rotating mill Part 1. Dissolution of bitumen

Cited by 18 publications

References 6 publications

Recent Advances in Nonaqueous Extraction of Bitumen from Mineable Oil Sands: A Review

Recent Advances in Nonaqueous Extraction of Bitumen from Mineable Oil Sands: A Review

Sorption equilibrium and kinetics for cyclohexane, toluene, and water on Athabasca oil sands solids

Kinetics of bitumen extraction from oil sands using organic solvents

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