Method and apparatus for producing clean dry air having applicat

Details Method and apparatus for producing clean dry air having applicat Method and apparatus for producing clean dry air having applicat

1998-03-19

2000-06-20

Griffin, Steven P.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

423230, 4232453, 423247, 423248, 423351, 423579, 95117, 95139, B01D 53047, B01D 5323

Patent

active

060774886

ABSTRACT:
A method and apparatus for producing a clean dry air product stream. In accordance with the method and apparatus, a compressed feed air stream is introduced into one adsorption bed to adsorb moisture and carbon dioxide and to produce a first intermediate product stream. Impurities contained within the first intermediate product stream such as hydrocarbons, carbon monoxide and hydrogen are catalytically reacted to produce a second intermediate product stream that contains additional carbon dioxide and moisture produced from the catalytic reaction. The second intermediate product stream is introduced into another adsorption bed that adsorbs the additional moisture and carbon dioxide formed by the catalytic reaction to produce the clean dry air product stream. The present invention can be used alone to serve the need of supplying a clean dry air product stream. Additionally, it can be used as a prepurification unit of an air separation plant designed to produce an ultra-high purity industrial gas product. By catalytically reacting the hydrocarbons in the first intermediate product stream, less expensive oil lubricated compression equipment can be used to compress the feed air.

REFERENCES:
patent: 5202096 (1993-04-01), Jain
patent: 5560763 (1996-10-01), Kumar
patent: 5571309 (1996-11-01), Kumar

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