Heatless Adsorption Dryers

Heatless Adsorption Dryers
Desiccant Dryers
Drytec MDA Heatless Desiccant Air Dryers
Drytec MDA Heatless Desiccant Air Dryers provide
constant –40°C pressure dew point.
These Dryers are designed to supply clean and dry
compressed air for critical applications.
Pre-filters and after-filters are supplied with Drytec
Heatless Air Dryers to keep the air clean and maintain the integrity of the desiccant medium.
A reliable electronic controller makes sure that the
dryer operates perfectly.
MDA Heatless Desiccant Dryers are equipped with
special valves and desiccants in order to have a
good perform-
Saves ENERGY
and helps
the world
to become
Principle of Operation
The twin tower are designed for continuous absorption of water vapor from compressed air by
using the hygroscopic desiccant with high crush
strength and a high surface / volume ratio. To be
dried, compressed air pass through one desiccant bed which absorb moisture, while the other
one is being simultaneously regenerated with the
expanded purge air.
To regenerate the desiccant, the use of heat is unneeded. The wet bed is dried by diverting a small portion of the super dry air from the outlet at atmospheric pressure. The purge flow rate is adjustable to suit the
specific outlet conditions (desired dewpoint). The super dry air flows in a counter direction through the wet
bed, sweeping all the water vapor previously absorbed by the desiccant.
MDA ensures pressure equalization in the twin towers before the switching. This prevents line surge and
minimizes desiccant attrition. The reactivated tower will gradually be re-pressurized at the end of its reactivation cycle before switchover takes place. Purge flow and de-pressurization are in downward direction,
counter flow to the drying air flow.
Desiccant Dryers
Technical Specifications of MDA Heatless Desiccant Air Dryers
PLC is standard
MDA Desiccant Dryers has a very
reliable electronic controller which
makes sure that the dryer operates.
Touch screen PLC is able to show the
cycles as well as the valves which
operate on real time. It also shows
the dew point (if applicable). User
friendly multi-lingual PLC helps the
users to understand the operation
system easily.
Activated Alumina
Drytec uses absorption media in its heatless range of desiccant dryers
to achieve consistent dewpoint. Activated Alumina, Molecular Sieve
and Silica Gel are used in varying ratios depending on the application.
Desiccant Dryers
Technical Specifications of MDA Heatless Desiccant Air Dryers
Drytec MDA Heatless Desiccant Air Dryers provide constant –40°C pressure dewpoint. These dryers are
designed to supply clean and dry compressed air for various applications. Pre-filters and after-filters are
supplied along with Drytec Heatless Air Dryers to keep air stream clean and maintain the integrity of the
desiccant medium. A very reliable electronic controller makes sure that the dryer operates perfectly all
through the service life of the dryer.
MDA Heatless Desiccant Dryers are equipped with special valves and desiccants in order to have a
good performance and one of the lowest pressure drops available in the market.