Aromatic purification process
AssigneeGulf Research & Development Company
InventorAllen E. Somers
Life of this patent
Estimating the term…
Abstract
Traces of furfural are removed from an aromatic feed by passing the aromatic feed containing greater than 50 ppm furfural through a bed of solid particles of a selected treating agent.
Claims4
A process which comprises passing an aromatic feed containing greater than 50 ppm furfural through a solid bed of particles of a treating agent selected from the group consisting of sodium hydroxide and potassium hydroxide, and recovering therefrom an aromatic product containing less than 25 ppm furfural.
A process which comprises contacting a lube oil charge containing an aromatic fraction with furfural under aromatic extraction conditions, recovering therefrom furfural containing an aromatic extract, separating furfural from said aromatic extract by distillation, thereafter passing the separated aromatic extraction containing greater than 50 ppm of furfural through a solid bed of particles of a treating agent selected from the group consisting of sodium hydroxide and potassium hydroxide, and recovering therefrom an aromatic extract containing less than 25 ppm furfural.
Dependencies are inferred from the claim text.