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:
Jan. 30, 2001
Filed:
Feb. 19, 1999
Applicant:
Inventors:
Jean Billy, Plessis Trevise, FR;
Daniele Fauroux, Limeil-Brevannes, FR;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25J 3/00 ;
U.S. Cl.
CPC ...
F25J 3/00 ;
Abstract
In the process of the invention, an ammonia synthesis mixture and carbon monoxide are produced. The hydrogen is purified in a nitrogen-washing column (,). The carbon monoxide is recovered cryogenically from a first liquid fraction (,) collected at the base of the said washing column (,), in a medium-pressure stripping column (,), then in a low-pressure distillation column (,). A second liquid fraction (,) is drawn from a position intermediate between the base and head of the washing column (,).