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:
Oct. 04, 1977
Filed:
Oct. 31, 1975
Applicant:
Inventors:
John H Blume, Chester, NJ (US);
James D Bushnell, Berkeley Heights, NJ (US);
Assignee:
Exxon Research and Engineering Company, Linden, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10G / ;
U.S. Cl.
CPC ...
208 33 ; 208 35 ;
Abstract
Autorefrigerative and ketone solvents are separated and recovered from dewaxed oil and wax through the use of high and low pressure flashes followed by steam stripping. Water buildup in the recovered solvent is prevented by the use of a decanter and deketonizer wherein the overheads from the strippers are sent directly to the deketonizer and the overhead therefrom sent to the decanter, thereby substantially reducing the size of the deketonizer required. Water is removed from the recovered solvent in the deketonizer and may be sent to sewerage.