Purification of gases

US6093379A · kind A · utility

Assignee

• AIR PRODUCTS AND CHEMICALS, INC. · US

Inventors

• Timothy Christopher Golden · Allentown, US
• Alexander Schwarz · Soest, DE
• Thomas Hsiao-Ling Hsiung · Emmaus, US
• Fred William Taylor · Lansdale, US

Key dates

• Filing date: Dec 4, 1998
• Grant date: Jul 25, 2000
• Expiry date: Dec 4, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02C20/40
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Carbon dioxide, water, carbon monoxide and hydrogen are removed from a gas stream such as air or nitrogen by adsorbing water and carbon dioxide on a solid absorbent of alumina, or zeolite and oxiding carbon monoxide over a solid catalyst to carbon dioxide and adsorbing the resulting carbon dioxide and chemisorbing the hydrogen on the catalyst, which may be palladium on alumina.