Method of treating heavy oil

Details Method of treating heavy oil Method of treating heavy oil

C - Chemistry, Metallurgy

10

G

196/163

C10G 55/04 (2006.01)

Patent

CA 1185203

METHOD OF TREATING HEAVY OIL ABSTRACT OF THE DISCLOSURE In a method of treating-heavy oil, in which a gas and a volatile oil fraction produced by thermally decomposing petroleum heavy oil are distilled off, a thermal decomposition residue withdrawn in the liquid state is brought into contact with a part of the volatile oil fraction as a solvent to extract the solvent-soluble component in the thermal decomposition residue, and then an extraction residue is separated as solid particles from the solvent, an improvement is disclosed which comprises fractionating the volatile oil fraction used as the solvent into two or more sub-fractions having different boiling points from each other on condensing the volatile oil fraction in a fractionating column, and contacting the sub-fractions thus-fractionated with the thermal decomposition residue progressively from the highest boiling to the lowest boiling of the fractions to extract a solvent-soluble component.

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