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Selective solvent extraction of oils

Patent:

Abstract

In the selective solvent extraction of naphthenic base oils, the solvent used consists of the extract obtained by treating a paraffinic base oil with a selective solvent. The extract, or partially spent solvent is less selective than the solvent itself. Selective solvents specified for the extraction of the paraffinic base oil are phenol, sulphur dioxide, cresylic acid, nitrobenzene, B:B/sup 1/-dichlorethyl ether, furfural, nitroaniline and benzaldehyde. Oils treated are Coastal lubricating oils, or naphthenic oils from the cracking, or destructive hydrogenation of coal, tar, lignite, peat, shale, bitumen, or petroleum. The extraction may be effected by a batch or counter-current method, and in the presence of (1) liquefied propane, or butane, or naphtha, or (2) agents which modify the solvent power such as, water, ammonia, acetonitrile, glycerine, glycol, caustic soda or potash. Treatment (2) may form a post-treatment effected on the extract phase. In counter-current treatment in a tower some pure selective solvent may be introduced near the raffinate outlet to wash out any extract therefrom.
Authors:
Publication Date:
Apr 09, 1938
Product Type:
Patent
Report Number:
GB 503575
Reference Number:
EDB-81-066619
Subject:
01 COAL, LIGNITE, AND PEAT; 02 PETROLEUM; OILS; SOLVENT EXTRACTION; AMINES; AMMONIA; BENZALDEHYDE; BITUMENS; BUTANE; COAL; CRACKING; CRESOLS; ETHERS; FURFURAL; GLYCEROL; GLYCOLS; HYDROGENATION; LIGNITE; LIQUIDS; LUBRICATING OILS; NAPHTHA; NITRILES; NITRO COMPOUNDS; NITROBENZENE; ORGANIC CHLORINE COMPOUNDS; ORGANIC SOLVENTS; PEAT; PHENOLS; PROPANE; SHALES; SULFUR DIOXIDE; TAR; WATER; ALCOHOLS; ALDEHYDES; ALKANES; AROMATICS; BROWN COAL; CARBONACEOUS MATERIALS; CHALCOGENIDES; CHEMICAL REACTIONS; COAL TAR OILS; DECOMPOSITION; DISTILLATES; ENERGY SOURCES; EXTRACTION; FLUIDS; FOSSIL FUELS; FUELS; FURANS; HETEROCYCLIC COMPOUNDS; HYDRIDES; HYDROCARBONS; HYDROGEN COMPOUNDS; HYDROXY COMPOUNDS; LUBRICANTS; MATERIALS; NITROGEN COMPOUNDS; NITROGEN HYDRIDES; ORGANIC COMPOUNDS; ORGANIC HALOGEN COMPOUNDS; ORGANIC MATTER; ORGANIC NITROGEN COMPOUNDS; ORGANIC OXYGEN COMPOUNDS; OTHER ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PETROLEUM; PETROLEUM DISTILLATES; PETROLEUM FRACTIONS; PETROLEUM PRODUCTS; PYROLYSIS; ROCKS; SEDIMENTARY ROCKS; SEPARATION PROCESSES; SOLVENTS; SULFUR COMPOUNDS; SULFUR OXIDES; THERMOCHEMICAL PROCESSES; 010500* - Coal, Lignite, & Peat- Products & By-Products; 020500 - Petroleum- Products & By-Products; 010407 - Coal & Coal Products- Solvent Extraction- (-1987)
OSTI ID:
6449787
Country of Origin:
United Kingdom
Language:
English
Submitting Site:
TIC
Size:
Pages: v
Announcement Date:

Patent:

Citation Formats

Not Available. Selective solvent extraction of oils. United Kingdom: N. p., 1938. Web.
Not Available. Selective solvent extraction of oils. United Kingdom.
Not Available. 1938. "Selective solvent extraction of oils." United Kingdom.
@misc{etde_6449787,
title = {Selective solvent extraction of oils}
author = {Not Available}
abstractNote = {In the selective solvent extraction of naphthenic base oils, the solvent used consists of the extract obtained by treating a paraffinic base oil with a selective solvent. The extract, or partially spent solvent is less selective than the solvent itself. Selective solvents specified for the extraction of the paraffinic base oil are phenol, sulphur dioxide, cresylic acid, nitrobenzene, B:B/sup 1/-dichlorethyl ether, furfural, nitroaniline and benzaldehyde. Oils treated are Coastal lubricating oils, or naphthenic oils from the cracking, or destructive hydrogenation of coal, tar, lignite, peat, shale, bitumen, or petroleum. The extraction may be effected by a batch or counter-current method, and in the presence of (1) liquefied propane, or butane, or naphtha, or (2) agents which modify the solvent power such as, water, ammonia, acetonitrile, glycerine, glycol, caustic soda or potash. Treatment (2) may form a post-treatment effected on the extract phase. In counter-current treatment in a tower some pure selective solvent may be introduced near the raffinate outlet to wash out any extract therefrom.}
place = {United Kingdom}
year = {1938}
month = {Apr}
}