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- W2166877006 abstract "Important process development aspects leading to more efficient bitumen recovery from diluent-conditioned oil sands by water-based methods are discussed. Bitumen viscosity of 0.5–2 Pa·s is required at the processing temperature and can be reduced to this level by bitumen dilution with an organic solvent. Oil sand porosity, however, poses a restriction on the amount of diluent that can be accepted by the oil sand. Also oil sand-diluent conditioning time is an important process parameter and can vary from a few minutes for oil sands with low-viscosity bitumen to several hours if viscosity of the bitumen is high. Additionally, the bitumen separation efficiency during digestion and flotation can be enhanced by reducing the bitumen/water interfacial tension through addition, for example, of tripolyphosphate to the aqueous phase. On a examiné d'importants aspects du développement de procédés conduisant à une meilleure récupération de bitumes de sables bitumineux conditionnés par des diluants à l'aide de méthodes basées sur l'eau. Une viscosité de bitume de 0,5-2 Pa.s est requise à la température de procédé et peut être réduite à ce niveau par la dilution du bitume avec un solvant organique. Cependant, la porosité du sable bitumineux impose une restriction pour la quantité de diluant qui peut être acceptée par le sable bitumineux. En outre, le temps de conditionnement sables bitumineux-diluant est un paramètre important et peut varier de quelques minutes pour des sables bitumineux dont le bitume est de faible viscosité à plusieurs heures si la viscosité du bitume est élevée. Enfin, l'efficacité de séparation des bitumes lors de la digestion et de la flottation peut être améliorée en réduisant la tension interfaciale bitume/eau par l'ajout, par exemple, de tripolyphosphate dans la phase aqueuse." @default.
- W2166877006 created "2016-06-24" @default.
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- W2166877006 date "2008-05-19" @default.
- W2166877006 modified "2023-10-18" @default.
- W2166877006 title "Water-Based Bitumen Recovery from Diluent-Conditioned Oil Sands" @default.
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- W2166877006 doi "https://doi.org/10.1002/cjce.5450820513" @default.
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