Enhanced process for the hydroconversion of heavy oils...

C - Chemistry – Metallurgy – 10 – G

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C10G 1/06 (2006.01) C10G 3/00 (2006.01) C10G 45/02 (2006.01) C10G 45/58 (2006.01) C10G 47/00 (2006.01) C10G 47/24 (2006.01) C10G 49/22 (2006.01)

Patent

CA 2690546

Process for the hydroconversion of heavy oils, selected from crude oils, heavy crude oils, bitumens from tar sands, distillation residues, distillation heavy cuts, distillation deasphalted residues, vegetable oils, oils from coal and oil shale, oils from the thermodecomposition of waste material, polymers, biomasses, comprising sending the heavy oil to a hydroconversion area, effected in one or more ebullated bed reactors, wherein hydrogen is introduced, in the presence of a suitable heterogeneous, supported, hydroconversion catalyst, in addition to a suitable hydrogenation catalyst, nano-dispersed in said heavy oil, and sending the stream coming from the hydroconversion area to a separation area, in which the separated liquid fraction, containing the nano-dispersed catalyst, is recycled to the ebullated bed reactor (s).

L'invention concerne un procédé pour l'hydroconversion d'huiles lourdes, choisies parmi des huiles brutes, des huiles lourdes brutes, des bitumes de sables asphaltiques, des résidus de distillation, des coupes lourdes de distillation, des résidus désalphatés de distillation, des huiles végétales, des huiles issues de charbon et de schiste bitumeux, des huiles issues de la thermodécomposition de déchets, des polymères, des biomasses, comprenant l'envoi de l'huile lourde dans une zone de thermodécomposition, mise en uvre dans un ou plusieurs réacteurs à lit bouillonnant, dans lesquels de l'hydrogène est introduit, en présence d'un catalyseur d'hydroconversion supporté hétérogène approprié, qui s'ajoute à un catalyseur d'hydrogénation approprié, nanodispersés dans ladite huile lourde, et l'envoi du courant venant de la zone de thermoconversion dans une zone de séparation, dans laquelle la fraction liquide séparée, contenant le catalyseur nanodispersé, est recyclée dans le ou les réacteurs à lit bouillonnant.

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