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:
May. 04, 1993
Filed:
Sep. 30, 1991
Applicant:
Inventors:
John T Lavin, Guildford, GB;
Thomas Rathbone, Farnham, GB;
Assignee:
The BOC Group, Inc., Windlesham, GB;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F25J / ;
U.S. Cl.
CPC ...
62 11 ; 62 36 ; 165166 ; 196139 ; 202198 ;
Abstract
The present invention provises a method and apparatus for separating a gas mixture. In accordance therewith, the gas mixture is rectified in a dephlegmator. The dephlegmator has first and second sets of heat exchange passages which are in a heat exchange relationship with the gas mixture being rectified. A stream of a first heat exchange fluid is passed through a first of the set of heat exchange passages so as to condense some of the gas mixture. A stream of a second heat exchange fluid is sub-cooled by passage through a second set of the heat exchange passages.