1/8" (2-5mm) bead activated alumina
is the size most frequently used in regenerative dryers. Activated
alumina is a porous form of aluminum oxide. It has a high surface
area which adsorbs vapors without any change in form.
If size is not known or specified,
the 1/8" (2-5mm) size is usually satisfactory. However, if
activated alumina is used in a regenerative dryer and the desiccant
retaining screens cannot be measured, the 1/4" (5-10mm) size should
be used as a bed support (6" layer).
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. Dewpoints to
-40°F and lower may be achieved with activated alumina depending on
dryer design and operating conditions. F-200 is a smooth sphere of
activated alumina produced by the unique manufacturing process.
F-200 is an excellent desiccant for
drying a wide variety of liquids and gases. Although all molecules
are adsorbed to some extent on F-200 activated alumina, those
molecules having the highest polarity are preferentially absorbed.
Stream conditions such as pressure, concentration and molecular
weight of the molecules, temperature and site competing molecules
affect the efficiency of adsorption.
Download Desiccant Material Safety Data Sheet
||1/ 8" (3.2 mm)
||360m 2 /gram
||30 lbs.( 14kgs)
|Static Sorption @ Relative Humidity %
|@ 58% RH
|@ 97% RH