Integrated air separation process
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United States of America Patent
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-
Oct 1, 1996
Grant Date -
N/A
app pub date -
May 24, 1995
filing date -
May 24, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An air separation method in which a pre-purification unit is provided with three or more beds which are subjected to a pressure swing adsorption process. Each of the beds is subjected to feed, pressurization, purge and repressurization stages. The purge stages are conducted with a waste stream from the air separation unit and the duration of the purge stage is equal to the total time of the cycle divided by the number of beds.
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