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:
Jul. 16, 1985
Filed:
Jul. 25, 1983
Brian A McNeil, Chessington, GB;
Air Products and Chemicals, Inc., Allentown, PA (US);
Abstract
A plant for producing gaseous oxygen which plant comprises a heat exchanger (6) for cooling feed air, a double distillation column (7) having a high pressure column (8) for receiving at least part of said feed air, and a low pressure column (15), a liquid oxygen storage vessel (19) communicating with said low pressure column (15) and a liquid storage vessel (37) communicating with said high pressure column (8), characterized in that said plant further comprises an expander (27) arranged to expand vapor from said high pressure column (8) and pass the expanded vapor through said heat exchanger (6) and further characterized in that said plant comprises means to control the flow of vapor through said expander (27).