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:
Jun. 29, 1982
Filed:
Jul. 14, 1980
Applicant:
Inventor:
Brian A McNeil, Chessington, GB;
Assignee:
Air Products and Chemicals, Inc., Allentown, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F25J / ; F25J / ;
U.S. Cl.
CPC ...
62 42 ; 62 20 ; 62 24 ; 62 17 ; 252377 ; 422148 ; 55 80 ; 55269 ; 165144 ; 165D / ;
Abstract
Difficulties associated with the operational stability of a conventional cryogenic plant for manufacturing ammonia synthesis gas from a stream rich in hydrogen and a stream of nitrogen are reduced by using three heat exchangers in place of the conventional single heat exchanger. In use, the first heat exchanger, which is preferably arranged with its cold end uppermost, is used to cool the stream of nitrogen to a temperature which: