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:
Sep. 26, 1989
Filed:
Jun. 24, 1988
Applicant:
Inventors:
Robert M Thorogood, Macungie, PA (US);
William T Kleinberg, Breinigsville, PA (US);
Assignee:
Air Products and Chemicals, Inc., Allentown, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
423219 ; 423230 ; 423247 ; 423262 ;
Abstract
The present invention relates to a three stage process using copper, copper oxide and molecular sieve adsorbent beds for the sequential removal of oxygen, hydrogen, carbon monoxide, carbon dioxide and water from an inert feed gas. The process is especially suited to the purification of nitrogen gas from an air separation plant, which can be purified from a contaminant level of 30 vppm oxygen+carbon monoxide+hydrogen to less than 10 vppb each of oxygen, carbon monoxide, hydrogen, carbon dioxide and water, without the addition of hydrogen or another reducing gas to the process.