 |
|
|
|
|
 |
Air Dryers - Ultra Air - Regenerative
(Desiccant ) Air Dryers
|
Heatless
Regenerative
Dryers |
Externally Heated
Regenerative
Dryers |
Externally Heated /
Blower-Purged
Regenerative Dryers |
| |
Principles of Operation |
| |
Drying Mode |
|
The saturated compressed air enters the
dryer inlet and is directed by the inlet air
control valves into the top of one of the
two desiccant towers (the On-Line tower). As
the air travels upward through the desiccant
bed, the moisture in the air adheres to the
desiccant beads (adsorbed), lowering the
dewpoint of the compressed air stream to
-40°F. The air then exits the dryer moisture
free and is ready for use. |
| |
Regeneration Mode |
|
As the On-Line tower is drying, the Off-Line
tower is being regenerated (stripped of
moisture or desorbed). After the dry air
stream (-40°F or -100°F PDP) exits the
On-Line tower, a small amount is then
expanded to near atmospheric pressure, where
it becomes super dry and is diverted into
the top of the Off-Line tower. The super
dry, expanded air travels downward through
the desiccant bed, stripping the moisture
from the activated alumina bed that was
adsorbed during the On-Line cycle and sweeps
it to atmosphere through the open purge
valve.
The entire cycle takes 10 minutes to
complete -40°F PDP. The cycle is as follows:
The On-Line tower dries or stays on line for
5 minutes. The Off-Line tower regenerates or
purges for 4.5 minutes and repressurizes for
30 seconds. The towers are shifted and the
entire cycle repeats. |
| |
Dryer Construction |
|
The dual tower, compressed air drying system
utilizes ASME coded pressure vessels (100
CFM and above). The inlet air flow is
controlled by 2 non-lubricated 2-way valves.
The purge valves are normally closed so that
if the unit is depressurized or there is a
power failure, the valves will close,
preventing plant air pressure from being
purged to the atmosphere. The outlet air is
controlled by ball cone style check valves.
The purge flow is exhausted through purge
mufflers to reduce to reduce the air noise
level to below OSHA limits. The entire
system is completely pre-piped and wired on
a heavy duty, structural steel frame. Only
air and electrical connection need to be
made. |
| |
Standard Features |
-
Generous quantities of activated alumina
desiccant.
-
Centrally mounted pressure gauge and
relief valves on each tower.
-
ASME inspected and stamped and CRN
registered pressure vessels (100 cfm and
above).
-
Purge air mufflers to reduce exhaust
noise.
-
115-1-60 NEMA 4x electrical.
-
Repressurization of towers before going
on drying cycle to prevent desiccant
dusting.
-
-40°F PDP (pressure dewpoint), lower PDP
available.
-
Control air line filter.
-
Low pressure drops (3 psi max).
-
Fail safe mode.
-
Dryer sequence lights.
-
Reliable & Proven inlet air control
valves & purge valves (life time
warranty LF Series 25-620 CFM).
-
1 year warranty.
-
NEMA 4x
|
| |
Electronic Solid State Controls
|
|
The solid state timer will provide years of
trouble-free operations. The timer replaces
the less reliable cam timer and mechanical
switches. The advantage of the solid state
timer over the cam timer includes: |
-
More precise tower switching controls.
-
Dryer operation sequence lights.
-
Tower fail-to-shift alarm (optional).
-
No mechanical contacts to corrode or
fail.
-
Very reliable and easy to maintain.
|
| |
Why Regenerative Air Dryer |
|
As pneumatic equipment has become more
sophisticated, the need for cleaner and
dryer air has increased to maintain reliable
plant operation. By removing moisture from
your compressed air system, the air dryer
enables pneumatic instruments and controls
to work properly, preventing corrosion of
internal parts that result in malfunctions
and downtime. The result is improved
efficiency, increased productivity, and
overall company profitability. |
| |
|
Heatless
Regenerative
Dryers |
Externally Heated
Regenerative
Dryers |
Externally Heated /
Blower-Purged
Regenerative Dryers |
|
|
|
|
|
|
Air Compressor Equipment Inc.
P.O. Box 3961, 1901 Baldree Road, Wilson, NC 27895
Toll Free: 800-682-6528 / Phone: 252-291-7808 / Fax: 252-291-1324
/ Email:
info@aircompeq.com
|
