Two step heterocyclic nitrogen extraction from petroleum oils

Details Two step heterocyclic nitrogen extraction from petroleum oils Two step heterocyclic nitrogen extraction from petroleum oils

C - Chemistry, Metallurgy

10

G

196/139, 196/227

C10G 45/02 (2006.01) C10G 17/00 (2006.01) C10G 21/16 (2006.01) C10G 67/04 (2006.01)

Patent

CA 1283618

TWO STEP HETEROCYCLIC NITROGEN EXTRACTION FROM PETROLEUM OILS Abstract of the Disclosure The instant invention discloses a method of removing hetero- cyclic basic nitrogen compounds from petroleum oils which comprises first enhancing the concentration of the heterocyclic basic nitrogen compounds in a portion of the petroleum oil and then extracting the enhanced portion of the heterocyclic basic nitrogen compounds with a two phase system having an aliphatic carboxylic acid as the extracting agent. In the hydrotreating embodiment of this invention a portion of all of the nitrogen compounds are converted to heterocyclic basic nitrogen compounds and thereby more feasibly extracted. In the distillation embodiment of this invention the nitrogen compounds are actually concentrated and thereby result in a more feasible extraction with the aliphatic carboxylic acid.

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