AEC TD Floor Mount Dryers - Manual (Page 4)

OPERATING MANUAL - TD2 & TD4-25-100 DRYERS
Revision 8/31/01
Page 4
The TD2 dryer series is a dual bed design that provides a
constant supply of dry air to the material hopper. While one
bed is removing moisture from the process air the other is
regenerating by heating the desiccant to a high temperature.
Once the regenerated bed cools down, the Zone Valve
switches the airflow, and the newly regenerated bed is used to
desiccate the process air stream. The saturated bed is now
regenerated in the same manner, completing the regeneration
cycle. The cycle is depicted Page 8.
The airflow design of the TD2 dryers makes the regeneration
cycle more efficient because we utilize a small amount of the
desiccated process air rather than ambient air to regenerate
the desiccant bed. This reduces the impact of the high
moisture content of the ambient air, which would contaminate
the desiccant bed, and allows the dryer to attain a lower dew
point. Please see the Air Flow Schematic on Page 6.
TD4 Design
Our patented TD4 design incorporates 4 desiccant beds
where two are stacked, one over the other. This nearly
doubles the amount of desiccant available for drying the
process air stream, and because of the tower design, the
dryer is able to regenerate the desiccant in the same time as
our TD series. This allows the dryer to operate in very high
humidity conditions without affecting the process air dew point.
In fact, this design produces dew point levels of – 40’ to -80’ C
for faster more complete drying of your material. Please see
the Air FLow Diagram on Page 7.
Hopper Design
Our ”all stainless” hopper design utilizes a stainless steel inner
shell surrounded by a stainless steel jacketed insulation layer.
The easily removable stainless steel spreader cone promotes
proper material flow to ensure that the material is dried
efficiently and no dried material is left at the hopper bottom
that needs to be fed out prior to operating. You must ensure
that your hopper is adequately sized for your usage rate and is
kept filled, to ensure that you have sufficient time to dry the
material.
DRYER OPERATION/
FEATURES