 Desiccant
Dryers - TTD Series
Foremost
Machine Builders designs and manufactures a full line of twin tower dehumidifying or desiccant dryers for drying
hygroscopic and non-hygroscopic plastic resins. When
your plant requirements demand high productivity on a continuous
basis, you will find that our series TTD Dehumifying Dryer packages
provide the dependable, efficient operation needed to succeed in
today's competitive processing environment. As plant managers face
increasing pressure to cut costs while maintaining production levels,
many operations are finding some solutions in the re-optimization
of existing material handling systems and equipment. Our
patented twin tower desiccant dyers were specifically designed
for drying hygroscopic materials such as plastic resins. Equipped
with features such as separate blowers and filters for processing
and regeneration circuits, digital process temperature control,
switch selectable (Time/Dewpoint) cycle control, nonproprietary
PLC based controls and a high temperature option of up to 400 degrees,
our desiccant dryers offer the best dying technology there is.
Desiccant Dryer
Technology
For over half a century, desiccant dryers have proven time and again
that they are the most reliable, economical and effective drying
system on the market. Before purchasing your next
desiccant dyer you should know what your options are and be clear
about what you expect from the dryer you choose. With four basic configurations to choose from: machine-mounted, beside-the-press,
or the larger central drying systems, and the newer portable
or off-the-press systems, each was designed to meet specific
processing requirements. Within each of these configurations you
also have a choice between the traditional twin-tower dual desiccant unit, the multiple-bed unit and the more unconventional
types, i.e., desiccant impregnated cartridges.
For the most part, traditional twin tower desiccant dryers operate
in the following way: warm dry air is sent through a hopper containing
plastic resin and removes the moisture from the resin. The moisture
laden air is sent through a dessicant bed where the moisture is
absorbed from the air stream by the desiccant. This air is then
reheated and sent back to the hopper of resin to remove additional
moisture in a closed loop. The quality of the dry air is monitored
by a dew-point sensor set as required for the desired degree of
drying. When the moisture-absorbing capacity of the desiccant reaches
its limit, the airflow is automatically switched to a second desiccant
chamber to maintain the drying process. Meanwhile the first desiccant
chamber is regenerated by heating it to remove moisture and then
cooling it so it can resume absorbing water.
Advantages of Desiccant
Drying Technology
As a trusted drying technology, our desiccant dryers rarely break
down and typically last a very long time. They feature a dew
point-controlled regeneration switchover which guarantees the
active use of a drying cell until its moisture saturation point.
This considerably extends the duration of cell use. A unit providing
475 cfm of air will give you substantial cost savings in electrical
costs compared to a noncontrolled drying system. Our dryers also
include:
- separate blowers and filters for processing and regeneration
circuits.
- digital process temperature control.
- switch selectable (Time/Dewpoint) cycle control.
- nonproprietary PLC based controls.
- high temperature option of up to 400 degrees.
 TTD
- 8CH Dehumidifying Dryer
Foremost was proud to introduce the Twin Tower Desiccant Dryer
at the show in Chicago. This model featured separate blowers and
filters for processing and regeneration circuits, digital process
temperature control, switch selectable (Time/Dewpoint) cycle control
and a high temperature option package of up to 350 degrees. Other
notable features included:
- Standard PLC logic control with digital temperature and dewpoint
controllers
- Sizes from 100 - 3000 CFM
- -40 Dewpoint or lower
- Dual stage process air filter
- Tubular insulated heaters
- Optional high temperature package with water to air return air
aftercooler
- Full range of hoppers from 100 - 10,000 lbs. capacity
Twin Tower Desiccant Dryers - Comparative Model Table
Model |
TTD-2 |
TTD-3 |
TTD-5 |
TTD-8 |
TTD-10 |
TTD-12 |
AIRFLOW (CFM) |
200 |
300 |
500 |
800 |
1000 |
1200 |
DESSICANT/BED (LBS) |
50 |
80 |
150 |
198 |
250 |
300 |
DUCT DIA. (IN) |
3-7/8 |
5-7/8 |
5-7/8 |
7-7/8 |
7-7/8 |
7-7/8 |
HEIGHT-(A) (IN) |
70 |
80 |
80 |
100 |
105 |
105 |
WIDTH-(B) (IN) |
60 |
72 |
72 |
86 |
96 |
96 |
DEPTH-(C) (IN) |
40 |
45 |
45 |
54 |
63 |
63 |
WEIGHT (LBS) |
540 |
1000 |
1300 |
2000 |
2200 |
3000 |
For over 50 years Foremost
has been engineering and manufacturing solutions to material handling
problems. We have provided the highest quality equipment in our
engineered systems and dependable dryer packages. Our
standard high quality components are matched with a conservative
engineering factor to provide the end user with years of low cost,
low maintenance productivity.
Ask about our complete line of twin tower desiccant dryers at sales@foremostmachine.com. |
