Process for purifying hydrocarbonaceous oils
A process for purifying hydrocarbonaceous oils containing heteroatom sulfur and heteroatom nitrogen compound impurities comprising the steps of: (1) reacting said hydrocarbonaceous oil with an oxidizing gas containing at least one nitrogen oxide with more than one oxygen atom for each nitrogen atom while maintaining the molar ratio of the nitrogen oxide to the total of the sulfur heteroatom content and the nitrogen heteroatom content to about 1.5:1 or less, the reaction time to about one hour or less, the temperature to about 100/sup 0/ C. or less, and a conversion of sulfur heteroatom content into gaseous sulfur oxides to about 60% or less on a weight basis; (2) contacting the oil from step (1) above with an extracting solvent comprising at least one amine selected from the group consisting of ethylene diamine, monoethanolamine, diethanolamine and mixtures thereof, or a water mixture thereof containing about 50% by weight or less water, and extracting solvent comprising formic acid or a water mixture thereof containing about 50% by weight or less water, with the contacting being sequential and in any order; and (3) separating said oil from step (2) above from the extracting solvents; to recover purified hydrocarbonaceous oil.
- Assignee:
- Environmental Research and Technology Inc.
- Patent Number(s):
- US 4485007
- OSTI ID:
- 6079719
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
040404* -- Oil Shales & Tar Sands-- Purification
AMINES
AQUEOUS SOLUTIONS
CARBOXYLIC ACIDS
CHALCOGENIDES
CHEMICAL REACTIONS
DENITRIFICATION
DESULFURIZATION
DISPERSIONS
ENERGY SOURCES
EXTRACTION
FORMIC ACID
FOSSIL FUELS
FUELS
MINERAL OILS
MIXTURES
MONOCARBOXYLIC ACIDS
NITROGEN COMPOUNDS
NITROGEN OXIDES
OILS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXIDIZERS
OXYGEN COMPOUNDS
PURIFICATION
SEPARATION PROCESSES
SHALE OIL
SOLUTIONS
SOLVENT EXTRACTION
SULFUR CONTENT