Heatless adsorption compressed air dryers

We are pleased to announce 2 new models: A-DRY 150, A-DRY 200

 
CHARACTERISTICS:
 
 operating pressure
 4 to 16 bar
 temp. operating range
 1,5 to 50 °C
 pressure dew point
 - 40 °C (- 25 °C / - 70 °C)
 flow rate
 A-DRY 150: 150 Nm3/h
 A-DRY 200: 200 Nm3/h
 
A-DRY series heatless adsorption dryers are used for drying air flows of up to 200 Nm3/h. The usual applications are small and simple compressor stations in small shops and companies, dental clinics etc. Standard version includes a coalescing pre-filter (reduces oil content to <0,01mg/m3) and a particle after-filter.
 
ABOUT:
  • Under pressure water molecules attach to the surface of the desiccant (molecular sieve, silica gel, …).
  • Typically dew point is set to -40°C (or down to -70°C).
  • Desiccant is placed in two vessels positioned in parallel to each other.
  • While adsorption under pressure is taking place in the first column the regeneration is in depressurized second column.
  • This process is called PSA (pressure swing adsorption).
 
 
Choosing the correct air dryer type and dimension for the application is an important process that ensures the correct and efficient operation of the dryer and the application.
 
If the dryer is undersized:
1. Target dew point will not be reached.
2. Too high inlet water content will cause permanent damage to the adsorbent.
3. Too high air velocity will cause large pressure drop.
4. Intense movement of the adsorbent, which is caused by too high air velocity, causes intensive dust formation and reduces the lifetime of the adsorbent.
5. Indirect costs of undersized dryer are costs of reclamation, damage occurred in the production process, or even stop of production.
 
If the dryer is oversized:
1. Increased purge air consumption and thus higher energy losses.
2. In some oversized dryers the drying will be less effective due to low air velocities in the column which cause channelling.
3. Indirect costs of oversized dryer are costs of reclamation, damage occurred in the production process, or even stop of production.
 
What do you need to know when choosing the correct air dryer?  
- Required flow rate (before/after dryer), required operating pressure, operating (inlet) temperature, desired dew point.
 
Example:
- Inlet flow rate: 75 Nm3/h
- Required pressure: 4 bar ~ correction factor: 0,63
- Operating temperature: 45 °C ~ correction factor: 0,87
- Desired dew point: -40 °C ~ correction factor: 1
 
Calculation: 75 / (0,63 * 0,87 * 1) = 136,84 Nm3/h
 
After the calculation we see that the correct dryer for the application is: A-DRY 150.
 
ADVANTAGES:
 
 Compact design
 - smaller dimensions
 - service done in under
 10 minutes
 4 valves in the lower control
 block instead of just 2
 - reliable operation
 - stable outlet pressure
 Anodized control blocks
 - anticorrosion protection
 Desiccant 2-bed technology
 with high-effective desiccant
 - variable dew points are
 achievable with same dryer
 - resistant to liquid water
 - better drying potential
 Desiccant, produced in EU
 - reliable operation
 - stable dew point
 Simple controller
 - easy to operate 
 - operating information 
 Standby mode as standard
 - no air consumption for
 regeneration when
 compressor stops 
 Optional dew point
 dependent control
 - lower average purge air for
 regeneration
 
 
 
 
 
 
Below are some solutions if the A-DRY series does not suit your needs. For example the flow rate up to 200 Nm3/h is not enough or operating pressure to 16 bar is not enough etc. 

 
 
 
 
 
 
For installations with limited height.
For higher air flow, robust design.
For bigger industrial projects.
For smaller compressed air losses.
For higher pressure.