Process for upgrading diesel oils

Patent · Tue May 24 04:00:00 EDT 1988

OSTI ID:6848706

Darian, S T; Arabshahi, S H

A process for upgrading diesel oil is described comprising the steps of: (1) reacting the diesel oil with a nitrogenous treating agent; (2) contacting the diesel oil from step (1) above with (a) a primary solvent selected from the group consisting of organic solvents having a dipole moment of about 1.3 or greater and mixtures thereof, with the proviso that alkyl amines and alkanol amines are excluded, or a water mixture of the primary solvent comprising about 50% by weight or less water and; (b) a cosolvent different from the primary solvent selected from the group consisting of an alcohol having 1 to 4 carbon atoms, an aldehyde having 1 or 2 carbons atoms, a ketone having 3 carbon atoms, a carboxylic acid having 1 or 2 carbon atoms and mixtures thereof, or a water mixture of the cosolvent comprising about 50% by weight or less water; wherein the primary solvent and the cosolvent are each immiscible with the diesel oil or are in combination immiscible with the diesel oil, and (3) separating the diesel oil from step (2) above from the primary solvent and from the cosolvent to recover upgraded diesel fuel with improved cetane number.

• Assignee: REI Technologies, Inc., TX
• Patent Number(s): US 4746420
• OSTI ID: 6848706
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
023000 -- Petroleum-- Properties & Composition
ALCOHOLS
ALDEHYDES
ALKYL RADICALS
AMINES
ANTIKNOCK RATINGS
CHEMICAL PREPARATION
DIESEL FUELS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
NITRATION
ORGANIC COMPOUNDS
ORGANIC SOLVENTS
OXYGEN COMPOUNDS
PETROLEUM PRODUCTS
PROCESSING
RADICALS
SEPARATION PROCESSES
SOLVENTS
SYNTHESIS
WATER