Process for upgrading a heavy viscous hydrocarbon

Details Process for upgrading a heavy viscous hydrocarbon Process for upgrading a heavy viscous hydrocarbon

C - Chemistry, Metallurgy

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C10G 21/00 (2006.01) C10G 55/04 (2006.01) C10G 67/04 (2006.01)

Patent

CA 1210358

PROCESS FOR UPGRADING A HEAVY VISCOUS HYDROCARBON Abstract of the Disclosure A process for upgrading a heavy viscous hydrocarbon, for example, ren- dering a heavy viscous crude pipelinable, includes visbreaking, dis- tillation and solvent extraction steps. A heavy viscous hydrocarbon is fed through the visbreaker which forms a feed to the distillation step. A heavier fraction from distillation is fed to a solvent ex- traction unit which produces a fraction which contains resin. At least a portion of the resin containing fraction separated in the sol- vent extraction unit is recycled and combined with the feed which is to be subject to visbreaking so that the total yield of products, residual and gas-free, is increased. The recycled resin reduces the tendency of the asphaltenes to separate from the oil and thereby re- duces the tendency to lay down coke in the visbreaker; this allows higher conversion to upgraded liquid products.

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