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:
Aug. 02, 1988
Filed:
Jun. 22, 1987
John A Thompson, Wyoming, Ontario, CA;
Medi M Hafez, Baton Rouge, LA (US);
Other;
Abstract
Described is a membrane apparatus having particular application in hydrocarbon processes, such as separating ketone dewaxing solvent from a hydrocarbon process stream. The apparatus contains a pressure resistant compartment containing flattened tubular membranes in a parallel stack arrangement separated by retentate spacers. Internally each tube contains permeate spacers for solvent outflow which permeate spacers extend the full length of the tubular membrane. The end of the tubes are not separated by retentate spacers and are clamped together such that solvent exits via the permeate spacers, while the clamping assembly design prevents the cocurrent exit of solution from the high pressure compartment at the solvent inlet location.