The effect of asphaltene content on solvent selection for bitumen extraction by the SESA process

Sparks, B.D.; Meadus, F. W.; Kumar, Ashwani; Woods, John R.

doi:10.1016/0016-2361(92)90205-3

Cited by 10 publications

(8 citation statements)

References 3 publications

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“…In an NAE process, the solvent dissolves bitumen from oil sand lumps; solvent choice can exert a considerable impact on bitumen extraction efficiency and product quality, − ,− ,− on the solvent removal rate and residual solvent content in the extraction gangue, ,,− as well as on the cost. The selection of the optimal solvent, however, is very challenging because one must deal with a number of criteria/constraints that are often contradictory: extraction performance (recovery efficiency, product quality), environment, health and safety (EHS, toxicity, biodegradability, recyclability, boiling point, volatility, and so on), and economic cost (e.g., cost of raw material, ease of solvent reuse).…”

Section: Selection Of Solventmentioning

confidence: 99%

“…It should be pointed out, however, that these correlations are not necessarily independent of one another. For example aromaticity, cyclicity, and boiling point may be interdependent . For hydrocarbons having the same number of carbon atoms, often an aromatic solvent possesses the highest boiling temperature, followed by cycloalkane and alkane (see Table ).…”

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: Selection Of Solventmentioning

confidence: 99%

Section: Selection Of Solventmentioning

confidence: 99%

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

Lin

Stoyanov

2017

Org. Process Res. Dev.

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“…This significant reclamation effort only represents a 2.2 km 2 drop in the 180 km 2 total tailings bucket. Some researchers are trying to replace water with organic solvents in the bitumen extraction process to prevent the formation of water‐based tailings . Even if successful, this technology would not address the already existing legacy tailings, as well as those still being produced in the absence of a commercially available organic solvent technology.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Tailings Composition on Flocculation

Botha

Soares

2015

Can J Chem Eng

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It is hard to treat fine tailings resulting from oil sands extraction processes. No current fine tailings treatment technology can completely eliminate tailings ponds, despite considerable efforts to address the slow settling of fines and to facilitate the consolidation of sediments. Some treatments use coagulants and coarse solids to form composite or consolidated tailings; others use polymer flocculants. The performance of polymer flocculants is evaluated empirically, with fine tailings often being considered as a black box. Some fundamental studies use single clay systems, such as kaolinite suspended in water, as models to evaluate the performance of polymer flocculants. While it is easier to relate polymer performance to specific conditions in these simpler systems, it is difficult to translate these results to the treatment of the much more complex tailings environment. For the rational design of polymer flocculants, one must understand the interactions between polymers and the several components in tailings. With this information in hand, one can optimize the molecular structure of polymer flocculants to treat oil sands tailings efficiently. In this review, we summarize the published research on flocculation performance within the context of complex fine tailings systems. Furthermore, we describe the compositional complexity of mature fine tailings to help the design of more representative model tailings systems.

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“…Unpredictable precipitation of this component can cause process problems during bitumen extraction. Consequently, the selection of an appropriate solvent is an important factor in the optimization of bitumen separation by solvent extraction [1]. Bitumen can be gotten as one of the fractions from distillation of crude oil or oil sands.…”

Section: Introductionmentioning

confidence: 99%

“…However, the solubility of asphaltenes in paraffins increases in proportion to the number of carbon atoms in the solvent and this provides a means of fractionating asphaltenes on the basis of their molecular weight. The selected bitumen solvent must therefore have the proper balance between paraffinic and aromatic components [1].…”

Section: Introductionmentioning

confidence: 99%

Extraction of Chemical Constituents of Bitumen Using a Mixed Solvent System

Odebunmi¹,

Olaremu²

2015

OJAppS

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Several solvents had been used to extract the SARA (Saturate, Aromatic, Resin and Asphaltene) constituents of bitumen. The quantification of such extracts also abounds in open literature but in this work an attempt was made to determine the quality of extraction as a feed stock for processing bitumen using a mixed solvent system. A mixture of heptane and toluene was used to compare with the standard method using heptane. The components were analysed for functional groups of compound types presented in them using Fourier Transform Infrared Spectrophotometry technique (FTIR). The quality of bitumen component extract was not significantly affected by the method of extraction as recommended by the ASTM. The components are mixture of different class of hydrocarbons such as saturated and unsaturated hydrocarbons which conformed to what had earlier been reported by other researchers.

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The effect of asphaltene content on solvent selection for bitumen extraction by the SESA process

Cited by 10 publications

References 3 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

The Influence of Tailings Composition on Flocculation

Extraction of Chemical Constituents of Bitumen Using a Mixed Solvent System

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