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:
Feb. 09, 1988
Filed:
May. 12, 1986
Applicant:
Inventors:
Timothy D Atkinson, London, GB;
John T Lavin, London, GB;
Assignee:
The BOC Group plc, Windlesham, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F25J / ;
U.S. Cl.
CPC ...
62 29 ; 62 22 ; 62 32 ; 62 42 ;
Abstract
In a method and apparatus for separating air a distillation zone is employed to separate air into an oxygen-enriched liquid fraction and a nitrogen-enriched vapor-fraction. A first stream is taken from the nitrogen-enriched vapor fraction and is mixed with a stream taken from the oxygen-enriched liquid fraction. At least part of the resultant mixture is employed to perform a refrigeration duty, for example the condensation of nitrogen-enriched vapor to provide reflux for the distillation column.