Controlling atmospheres in containers

Gas separation: processes – Solid sorption – Including reduction of pressure

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Details

95105, 95119, 95122, 95130, 95139, 95143, 95144, 426419, B01D 53047

Patent

active

061136719

ABSTRACT:
A process for controlling the atmosphere in a container including the steps of passing a pressurized portion of the atmosphere serially through a plurality of separate but inter-communicating adsorbent beds which selectively adsorb water vapor, ethylene, carbon dioxide and nitrogen from the compressed atmosphere, then isolating the ethylene-selective adsorbent and desorbing ethylene therefrom, then desorbing nitrogen from the nitrogen-selective adsorbent and purging the carbon dioxide-selective bed, the ethylene-selective bed and the water vapor-selective bed with the desorbed nitrogen, and returning the purge and purged gas mixture to the container.

REFERENCES:
patent: 3981698 (1976-09-01), Leppard
patent: 4228197 (1980-10-01), Means
patent: 4337276 (1982-06-01), Nakamura et al.
patent: 4477269 (1984-10-01), Kratz et al.
patent: 4710206 (1987-12-01), Allen et al.
patent: 4845958 (1989-07-01), Senda et al.
patent: 5152966 (1992-10-01), Roe et al.

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