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Drytech
has developed a range of molded and immobilized desiccants.
These products are molded and shaped using a variety of desiccants
including molecular sieves and activated aluminas. Organic binders
are used in the blending process of molded desiccants to arrive
at a net shape molded product providing a robust form similar
to that of a thermoset plastic. Organic binders are used in
the blending process of immobilized desiccants to arrive at
a housed but immobilized or sintered bed. Both processes utilize
heat, pressure and vacuum.
Typically immobilization requirements are for extremely harsh
vibration environments. One of the byproducts of this process
is that it can provide adsorption maximization by retarding
flow through the bed, thus allowing the moist air to dwell over
the desiccant longer.
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| Characteristics |
Molded
Desiccant
- Adsorption
of up to 18% of dry weight at 70 deg. C at 95% RH
- Density
= 1.0 gm/cc min
- Compression
strength up to 6000 LBF
- Method:
Compression molding
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Immobilized
Desiccant
- Adsorption
capacity up to 22% of dry weight at 70 deg. C at 95% RH
- Retarding
factor/adsorption efficiency increase up to 150% of normal
bed.
- Density:
Approximately 800 grams/liter
- Vibration
capability: To MIL-STD-8 10 Method 514.3, 10-2000 Flz
and 27 grams, X,Y,
Z axis.
- Method:
Heat sintering w/polymeric binders
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| Benefits |
Molded
Desiccant
- Formed
and/or machined to shape to fit into confined & small
spaces.
- Weight
advantage since no desiccant housing is required.
- Slow
adsorption characteristic is ideal for production out-time.
- Can
be reactivated.
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Immobilized
Desiccant
- Tolerates
high vibration & shock environment without attrition
of the desiccant bed.
- Increases
gas to desiccant contact time thus increasing adsorption
of water vapor, C02 or other gases by selective adsorption.
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| Applications |
- Optics
- Lasers
- Missile
Storage
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- Electronics
- Refrigeration
- Pure
Air & Pneumatic Systems
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