Purification of air

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United States of America Patent

PATENT NO 9108145
APP PUB NO 20140338425A1
SERIAL NO

13895632

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Abstract

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Process of reducing water, CO2 and N2O in feed air, which: a first adsorbent such as alumina (25-40% volume) and a second adsorbent such as X zeolite (60-75% volume) are used; the online time of the adsorbent is determined by determining the concentration measured by an analyzer for CO2 concentration at a position within the length of the second adsorbent when a maximum level of N2O is simultaneously obtained at the downstream end of the second adsorbent in the feed direction, wherein the online time is the time taken from commencing passing the feed air to the first and second adsorbents to the measurement by the analyzer of the determined concentration of CO2; at least the second adsorbent is regenerated by heated regeneration gas at a temperature of 140° C.-220° C.; and the molar ratio of the regenerating gas to feed air supplied during one iteration of the cycle is 0.08-0.5.

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Patent Owner(s)

Patent OwnerAddress
AIR PRODUCTS AND CHEMICALS INC7201 HAMILTON BLVD PATENT DEPT ALLENTOWN PA 18195-1501

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Botelho, Ann Marie Centre Valley, US 1 64
Finot, Anthony London, GB 1 64
Golden, Timothy Christopher Brittany, FR 71 2184
Kalbassi, Mohammad Ali Weybridge, GB 23 408
Raiswell, Christopher James Crewe, GB 13 313

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