Purification of gases using solid adsorbents

Details Purification of gases using solid adsorbents Purification of gases using solid adsorbents

B - Operations, Transporting

01

D

B01D 53/04 (2006.01) B01D 53/047 (2006.01) B01D 53/26 (2006.01)

Patent

CA 2186682

A method and apparatus for the removal from a feed gas stream such as air of at least two contaminating gas components such as water and CO2 features repeated cycles of operation which comprise: feeding the feed gas stream in a feed direction at a first pressure and at a first temperature, e.g. 30°C in contact with a solid adsorbent such as alumina that adsorbs a first of said contaminating gas components more strongly and a second of said contaminating gas components less strongly so that said first contaminating gas component is adsorbed in an upstream portion of said adsorbent and said second contaminating gas component is adsorbed principally in a more downstream portion of said adsorbent, halting the feeding of said feed gas stream, depressurising the gas in contact with the adsorbent to a second, lower pressure, feeding a regenerating gas such as dry nitrogen at said second pressure and at a second higher temperature, e.g. 70°C, in a direction counter-current to said feed direction in contact with said adsorbent to produce a heat pulse travelling in said counter-current direction to desorb said less strongly adsorbed second contaminating gas component from the downstream (with respect to the feed direction) portion of the adsorbent by TSA whilst at the same time desorbing the more strongly adsorbed second contaminating gas component from theupstream (with respect to the feed direction) portion of the adsorbent by PSA, ceasing said flow of regenerating gas before the heat pulse travels as far as the upstream portion of the adsorbent in which is adsorbed the first contaminating gas component, and repressurising said adsorbent. Improved capacity for the more weakly adsorbed component allows longer cycle times than in PSA and hence longer repressurisation times with consequently less variation in purified gas output.

Affiliated with

Also associated with

Rating

Purification of gases using solid adsorbents does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Purification of gases using solid adsorbents, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Purification of gases using solid adsorbents will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1777964