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Activated Alumina Desiccant | Tabular Support | Deliquescent Desiccant (Dry-O-Lite) | 4A Molecular Sieve | 13X Molecular Sieve | Silica Gel | Blue to Pink Silica Gel | Sorbead Orange Color Change Silica Gel | Yellow to Green Color Change Silica Gel | Desiccant Main Page

 Desiccant

Bulk Desiccant: ECA offers silica gel, molecular sieve, and activated alumina by the lbs. (desiccant lbs.) ECA has organized key information about bulk desiccant by type here. For more information choose a desiccant from the list below.
  1. Activated Alumina Desiccant
  2. Silica Gel Beads
  3. Deliquescent Desiccant
  4. 4A Molecular Sieve
  5. 13X Molecular Sieve
  6. Tabular Support Alumina Balls Desiccant
  7. Blue to Pink Silica Gel
  8. Sorbead Orange Color Change Silica Gel
  9. Yellow to Green Color Change Silica Gel

About Desiccant

Desiccant, activated alumina for example, naturally attracts moisture from gases and liquids. The desiccant becomes saturated as moisture is adsorbed on the surface. The desiccant can be regenerated (dried-out) by heating and used again. Activated alumina can adsorb up to 40% its weight at 100% relative humidity. Solid bulk desiccant include silica gel, activated alumina, deliquescent and molecular sieves.

Compressed air dryers are used throughout industry to remove moisture from compressed air. The compressed air first passes through an aftercooler, air receiver, and coalescing filter before reaching the desiccant dryer. At each point water is removed from the compressed air via drain valves. The compressed air enters the compressed air dryer and comes in contact with the desiccant in the desiccant chamber. The desiccant naturally removes the moisture from the compressed air via adsorption. Once downstream of the compressed air dryer the compressed air's dew point is generally -40°F (some units are designed to provide -100°F dew points). A particulate filter downstream of the desiccant dryer captures any desiccant fines and dust before the compressed air enters production.

Desiccant used in compressed air dryers include:
  • Activated alumina - an all purpose desiccant for drying air and other gases with high relative humidities
  • Silica gel desiccant - applications include compressed air/gas streams and especially natural gas. Silica Gel has excellent adsorption at mid inlet relative humidity.
  • Molecular sieve - most effective for applications with low inlet flows and low relative humidities, (Less than 30-35%RH). Can achieve the lowest dewpoints possible to -120°F.
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1/8'' Activated Alumina Desiccant in 50 lb Bags
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Price: $74.25 a 50 lb. Bag
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Orange to White Color Change Silica Gel in 25 lb Pail
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Color Change Silica Gel
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Blue to Pink Color Change Silica Gel in 25 lb Pails
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DQ11 Deliquescent Same as Dry-O-Lite in 50 lb Bags
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Price: $46.00 a 50 lb. Bag
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