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:
Nov. 18, 1986
Filed:
Aug. 29, 1985
Peter Allen, Johannesburg, ZA;
John W Hemmings, Randburg, ZA;
Aeci Limited, Johannesburg, ZA;
Abstract
In a gas treatment process, a liquid tail product from a nitrogen wash column, which is typically incorporated into a process for the manufacture of ammonia from hydrocarbons, coal or other carbonaceous material, is separated in cryogenic distillation columns into product streams. Streams rich in hydrogen and carbon monoxide are available at elevated pressure and may be beneficially recycled to the ammonia manufacturing process. The process requires no external source of refrigeration and no compressor is incorporated therein. A stream of liquid nitrogen, which may typically be available in an ammonia manufacturing plant, may optionally be used and, when used, will result in improved separation in the distillation columns.