C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
C10G 67/04 (2006.01) C10G 47/26 (2006.01)
Patent
CA 2175437
The process for the conversion of heavy crude oils or distillation residues to distillates comprises the following steps: - mixing the heavy crude oil or distillation residue with a suitable hydrogenation catalyst and sending the mixture obtained to a hydrotreating reactor introducing hydrogen or a mixture of hydrogen and H2S; - sending the stream containing the hydrotreating reaction product and the catalyst in slurry phase to a distillation zone where the most volatile fractions are separated; - sending the high-boiling fraction obtained in the distillation step to a deasphaltation step obtaining two streams, one consisting of deasphalted oil (DAO), the other consisting of asphaltenes, catalyst in slurry phase, possibly coke and rich in metals coming from the initial charge; - recycling at least 60%, preferably at least 80% of the stream consisting of asphaltenes, catalyst in slurry phase, optionally coke and rich in metals, to the hydrotreatment zone.
Delbianco Alberto
Marchionna Mario
Panariti Nicoletta
Robic
Snamprogetti S.p.a.
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