Upgrading heavy oils by solvent dissolution and ultrafiltration
A method is described for the separation of a heavy oil diluting the heavy oil with a solvent which is completely miscible with the heavy oil in an amount sufficient to completely dissolve the oil so as to produce an ultrafiltration feed; contacting the ultrafiltration feed with a first side of a continuous generally unswelled organic membrane selected from the group consisting of those comprising cellulose or polyvinylidine fluoride at a pressure between about 750 kPa and about 1500 kPa and at a temperature between 20/sup 0/C. and about 125/sup 0/C.; recovering a permeate fraction enriched in aromatic and saturated hydrocarbons from a second side of the membrane, and recovering a retentate fraction enriched in polar and metal-containing hydrocarbons from the first side of the membrane.
- Assignee:
- Exxon Research and Engineering Co., Florham Park, NJ
- Patent Number(s):
- US 4797200
- OSTI ID:
- 6227766
- Resource Relation:
- Patent File Date: Filed date 4 May 1984
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
04 OIL SHALES AND TAR SANDS
BITUMENS
PROCESSING
COAL LIQUIDS
PETROLEUM
PETROLEUM RESIDUES
SHALE OIL
AROMATICS
CELLULOSE
DILUTION
DISSOLUTION
FILTRATION
FLUORIDES
HYDROCARBONS
METALS
PETROLEUM FRACTIONS
POLYVINYLS
SOLUBILITY
SOLVENTS
VISCOSITY
CARBOHYDRATES
ELEMENTS
ENERGY SOURCES
FLUIDS
FLUORINE COMPOUNDS
FOSSIL FUELS
FUELS
HALIDES
HALOGEN COMPOUNDS
LIQUIDS
MINERAL OILS
OILS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OTHER ORGANIC COMPOUNDS
POLYMERS
POLYSACCHARIDES
SACCHARIDES
SEPARATION PROCESSES
TAR
020400* - Petroleum- Processing
010402 - Coal
Lignite
& Peat- Purification & Upgrading
040403 - Oil Shales & Tar Sands- Refining