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#1 rsk


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Posted 04 December 2016 - 01:15 AM

For drying of compressed air dessicant is to be selected, what forms the basis.

#2 Art Montemayor

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Posted 05 December 2016 - 08:52 PM



When selecting the type of adsorbent (which is what you mean) to be used in gas drying service, you should rely on:

  • Your experience with the individual adsorbents being considered;
  • The drying service to be imposed on the adsorbent - what product dew point are you targeting?  What is the nature of the gas to be dried?
  • What is the operating pressure and temperature?
  • What type of adsorber unit design are you evaluating?  - is it a "heat less" type?  Is it a heat regenerated type?  Is it a PSA type?  etc., etc.
  • Are you going to base your decision on adsorbent price?  Or on performance?
  • Can you tolerate dusting or adsorbent breakdown?  If so, go with silica gel - the cheapest and the most prone to dust.
  • How clean is your process gas?
  • What type of regeneration system are you employing?

There are more items that come into play, but the above should suffice with the general nature of your query.

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