Van
Air Systems' Special Purpose, Type SP, is an absorbent deliquescent
desiccant formulated for single and sequential tower compressed
air dryers. SP is a hard tablet formed from hygroscopic
materials that attract and hold moisture. The materials
in the compound are non-toxic and are completely soluble
in water. To be used where the operating temperature is
at or below 80°F, it produces lower dew points for both
natural gas and compressed air applications.
As the desiccant tablet draws water vapor out of the compressed
air, the surface of the tablet slowly dissolves and forms
a solution which eventually drops from its surface. The
deliquescent desiccant tablet continues to remove moisture
and forms this solution until the tablet is entirely consumed.
For applications where the temperature conditions are above
80°F, crystals may form in the drain solution, causing
a caking problem. (A prebed of ceramic bead support # 33-0281
is recommended to minimize crystal formations in natural
gas applications.)
Recommended for use where the operating temperature is at
or below 80° F, SP is specially formulated to be used
as a first stage absorbent desiccant in the compressed air
dehydration process. When used in a properly sized single
or sequential tower desiccant air dryer, SP will remove
sufficient moisture vapor to establish an approximate 33%
RH in the air line.
SP
Desiccant Physical Properties |
| Color
and form |
White
tablet |
| Size |
1"
diameter x 3/4" height |
| Bulk
Density |
55
+/- 3 lbs/cu.ft. |
| Average
Break Pressure |
60
- 100 lbs |
| Average
PH of Solution |
6.5
to 7.5 |
| Critical
RH |
33% |
SP
Desiccant Dew Point Performance |
Inlet
Temperature (saturated) |
Outlet
Dew Point |
Dew
Point Depression |
80°
F |
50°
F |
30°
F |
70°
F |
43°
F |
27°
F |
60°
F |
36°
F |
24°
F |
55°
F |
32°
F |
23°
F |
45°
F |
25°
F |
20°
F |
SP
Desiccant Package Sizes |
| 33-0328 |
45
lb pail |
| 33-0205 |
50
lb bag |
| 33-0283 |
400
lb steel drum |
