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:
May. 21, 2002
Filed:
Oct. 12, 1999
Applicant:
Inventors:
Dongmin Shen, Berkeley Heights, NJ (US);
Madhusudhan Huggahalli, Somerset, NJ (US);
Martin Bülow, Basking Ridge, NJ (US);
Sudhakar R. Jale, Scotch Plains, NJ (US);
Ravi Kumar, Allentown, PA (US);
Assignee:
The BOC Group, Inc., Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 5/304 ; B01D 5/326 ;
U.S. Cl.
CPC ...
B01D 5/304 ; B01D 5/326 ;
Abstract
The present invention provides for a process for purifying atmospheric air prior to its separation by cryogenic distillation. The process utilizes three adsorbent layers, the first primarily removes water; the second primarily removes CO ; and the third layer is designed to remove displaced gas components such as N O and hydrocarbons which are displaced by the second layer. It has been found that CaX type adsorbents provide the removal of N O and hydrocarbons in the third layer.