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About
Silica Gel
Applications include compressed air/gas streams and
especially natural gas. Silica Gel has excellent adsorption
at mid relative humidity.
Desiccant silica gel beads are 97% silica and 3% alumina. Silica
desiccant can effectively satisfy most desiccant air dryer
applications, particularly the dehydration of compressed air
and natural gas. The desiccant silica gel bead shape,
uniform particle size and high bulk density combine to
ensure optimum air/gas flow without nesting or channelling.
Minimal dusting occurs due to the hard, smooth, spherical
shape of the silica desiccant beads. Desiccant silica gel
beads are an excellent option for applications requiring
long-term economy, higher capacity, premium performance and
energy savings.
The internal structure of a silica gel granule contains a vast
network of inter-connecting microscopic pores, which attract
and hold moisture via physical adsorption and capillary
condensation. A single teaspoon of silica gel has an
internal adsorptive area equivalent to a football field.
Silica Gel is inert and non-toxic. Even when saturated
silica gel looks and feels dry to the touch. Since the
second World War, silica gel has been the desiccant of
choice by government and industry.
Silica Gel
Desiccant Features
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Dewpoints to -80° F or lower
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Smooth Beads/ Low Abrasion
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Low
Regeneration Temperature 250°-400° F
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Uniform Size -Low Pressure Drop
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High
Adsorption Capacity
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Longer Life -Lower Operating Costs
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About Activated alumina
An all
purpose desiccant for drying air and other gases at high
relative humidity.
The industry-standard activated alumina
desiccant is used extensively in compressed air dryers.
Activated alumina is for use in both heated compressed air
dryers and heatless / pressure swing compressed air dryers.
Dew-points of -100° F can be achieved depending on dryer
design and operating conditions.
HIGH MOISTURE CAPACITY:
The high surface area and excellent pore distribution
combine to give activated alumina a high water
adsorption capacity. This feature of activated alumina
reduces investment, energy consumption and operating costs
through smaller bed sizes or longer operating cycles.
SMOOTH BEADS/ LOW
ABRASION: Ensures LESS
DUSTING during tower loading and depressurization. Low
abrasion means lower pressure drop and less chance for
plugged or clogged pore orifices, valves or filters due to
dust carryover.
UNIFORM SIZE = LOW
PRESSURE DROP In a packed
bed, activated alumina provides a low pressure drop
which minimizes channelling and maximizes utilization of the
whole drying capacity of the tower.
UNAFFECTED BY LIQUID
WATER: Water slugging due
to upstream failure of after-coolers, moisture separators,
drain traps or filters will not fracture activated
alumina. Adsorption capacity of saturated desiccant can be
restored after a complete regeneration cycle.
HIGH CRUSH STRENGTH:
This feature of activated alumina limits dusting when
loading towers. Its strength makes activated alumina a good
pre-bed material for use with other types of desiccants in
mixed towers.
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