Petroleum residues by means of reduction of viscosity,...

Details Petroleum residues by means of reduction of viscosity,... Petroleum residues by means of reduction of viscosity,...

C - Chemistry, Metallurgy

10

G

196/90

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

Patent

CA 1196305

A B S T R A C T The present invention provides a method of con- verting petroleum residues containing a high percentage of asphaltic materials into hydrocarbons of higher commercial value. The method comprises the steps of viscosity reduc- tion, deasphaltation and hydrotreatment. The petroleum residues are submitted to a viscosity reduction process under prescribed pressure and temperature conditions. The resulting viscosity-reduced residue is submitted to a deasphaltation process with aliphatic hydrocarbons saturated at prescribed conditions of temperature, pressure and sol- vent:batch weight ratio to obtain a deasphalted oil and an asphalt. The deasphalted oil is hydrotreated with catalysts containing certain metals, under prescribed conditions of pressure, temperature, spatial velocity and H2:batch ratio, to obtain liquid products useful as low sulfur content fuels or as a basis for obtaining light distillates or gasolines.

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