A process to upgrade crude oils by destruction of naphthenic...

Details A process to upgrade crude oils by destruction of naphthenic... A process to upgrade crude oils by destruction of naphthenic...

C - Chemistry, Metallurgy

10

G

C10G 29/16 (2006.01) C10G 19/073 (2006.01) C10G 53/02 (2006.01)

Patent

CA 2235691

A method for upgrading an oil stream containing naphthenic acid and sulfur contaminants which comprises, adding an alkaline earth oxide to the oil stream to form a mixture wherein said alkaline earth oxide is added at an effective amount to convert substantially all naphthenic acid contaminants to corresponding non-acidic compounds and substantially all sulfur contaminants to alkaline earth metal sulfide, heating the mixture under a pressure sufficient to prevent vaporization of the mixture to a temperature sufficient and for a time sufficient to react the naphthenic acid contaminants with the alkaline earth oxide to form the corresponding non-acidic compounds and alkaline earth carbonate and the sulfur contaminants with the alkaline earth oxide to form the alkaline earth sulfide, and separating the alkaline earth carbonate and alkaline earth sulfide.

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