Patents

A process for the production of low Sulfur residual fuel oil (Sulfur content less than 1 weight %) from complex heavy end residues of petroleum hydrocarbons such as vacuum residue (VR) containing Sulfur compound around 5 weight % through oxidation of the stream and separating the oil phase from oxidized phase and finally desulfurized stream using low boiling paraffinic solvent and polar selective solvents such as aqueous NMP, Furfural and Di-methyl formamide (DMF).