Multi-stage process for deasphalting resid, removing...

C - Chemistry – Metallurgy – 10 – G

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C10G 21/14 (2006.01) B01J 19/00 (2006.01) C10G 67/04 (2006.01)

Patent

CA 2064338

The invention reduces cracking catalyst fines in decanted oil by mixing the decanted oil (DCO) containing cracking catalyst fines with a resid oil and then treating the DCO-resin mixture with a non-aromatic hydrocarbon solvent in an extraction unit. The presence of catalyst fines facilitates deasphalting of hydrotreated resid. The invention represents an improvement over the prior art because the prior art, among other things, does not teach or suggest feeding solvent extracted deasphalted oil and resins to a hydrotreating reactor or mixing a decanted oil containing cracking catalyst fines, as does the invention.

L'invention réduit les fines de catalyseur de craquage dans l'huile clarifiée en mélangeant l'huile clarifiée (DCO) contenant les fines de catalyseur de craquage avec un résidu de distillation et en traitant le mélange DCO-résine avec un solvant hydrocarboné non aromatique dans une unité d'extraction. La présence des fines de catalyseur facilite le désasphaltage du résidu de distillation hydrotraité. L'invention représente une amélioration par rapport à la technologie antérieure parce que, entre autres choses, la technologie antérieure reste muette sur la possibilité de traiter l'huile et les résines désasphaltées extraites par solvant dans un réacteur d'hydrotraitement ou de mélanger l'huile clarifiée contenant des fines de catalyseur de craquage, comme il en est question dans la présente invention.

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