The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 1998
Filed:
Oct. 17, 1995
Applicant:
Inventors:
Marcel Aussillous, Vienne, FR;
Patrick Briot, Vienne, FR;
Pierre-Henri Bigeard, Vienne, FR;
Alain Billon, Le Vesinet, FR;
Assignee:
Institut Francais du Petrole, Cedex, FR;
Primary Examiner:
Int. Cl.
CPC ...
C10M / ; C10G / ;
U.S. Cl.
CPC ...
208187 ; 208179 ; 208184 ;
Abstract
The invention concerns a process and plant for purifying spent oil, comprising dehydration, preferably by atmospheric distillation, directly followed by vacuum distillation producing a residue and at least one distilled oil fraction. The vacuum residue directly undergoes solvent extraction and the clarified oil obtained and the distilled oil fraction(s) undergo finishing hydrotreatment.