A brief about adsorption technology in compressed air system

1. Compressed air purification
Adsorption Technology - Paulus Hartanto -

2. Air compression
Ambient air Compressed air
p = 1 bar a compressed to p = 8 bar a
RH = 60 % RH = 100 %

3. Compressed air is contaminated with :
– Water, drawn in from the ambient air,
compressed and cooled to the temperature
dependent saturation point
– Dust particles drawn in from the ambient air
during compression and also produced from
abrasions in the inner compressed air system
– Oil droplets brought in during compression for
the lubrication and heat removal in the
compressed air system

4. Why compressed Untreated compressed air
air purification ? consists of:
– Condensate
– Dust particles
– Oil droplets
this causes:
– loss of quality
– loss of production
– increased costs

5. The compressed air that is....
...contaminated with condensate, dust
particles and oil, is purified by filtering and
drying
– what is filtered:
condensed particles of oil and water
as well as dust
– what is dryed:
remaining vapourised particles of
condensate

6. So why Treated compressed air
compressed air is free of:
purification ?
– Condensate
– Dust particles
– Oil droplets
this means:
– maximised quality
– increased production
– reduced costs

7. Types of Air Drying Processes
Compressed Air Dryer
Membrane Adsorption Combination Fridge
Dryers Dryers Dryers Dryers
Heatless Heat Regenerated
Dryers Dryers

8. Typical Range of Application
Fridge Dryer
Typical Range of Application
Membrane Dryer
Adsorption Dryer
- 70°C - 20°C 0°C + 15°C
Pressure Dew Point

9. Adsorption +
Adsorption is ...
... Storing humidity
Regeneration is …
… removing humidity
-

10. Types of Desiccant
Desiccant is...
... media which stores the humidity
We use …
Microscope
View of a
Molecular Sieve
ultrasorb 16 ultrasorb 4 enersave
Activated Moleculare WS and N
Alumina Sieve 4A KC-Trockenperlen

11. Typical Applications
Major using for … Advantage…
ultrasorb 16 Heatless & Reliable and efficient
Activated Alumina Heat Regenerated Dew points –25 … -50°C
dryers
ultrasorb 4 For low dew points and
Heatless & high inlet temperature
Molecular Sieve Heat Regenerated
4A Dew points –40 … -70°C
dryers and better
enersave Reliable and efficient
Heat Regenerated
WS and N dryers
requires less reg.
KC-Trockenperlen temperature
Dew points –25 … -50°C

12. Typical Desiccants for Air Drying
Physical Activated Silicagel Molecular
Properties Alumina WS / N Sieve 4A
Particle Size [mm]: 2,5 - 5 2,5 - 5 2,5 - 5
Bulk Density [kg/l]: 0,76 - 0,85 0,7 - 0,8 0,68 - 0,72
Surface Area [m2/g]: 300 - 380 650 - 750 800 - 1100
Pore Diameter [nm]: 2-3 2 - 2,5 0,4
Chem. Analysis [wt %]: Al2O3: 93,6 SiO2: 97,0 Crystal Zeolithe
Na2O: 0,5 Al2O3: 3,0 Na12
SiO2: 0,02 [(AlO2)12(SiO2)12]
Fe2O3: 0,02 xH20

13. Adsorption Isothermes

15. Rule of thumb :
Volume flow < 1200 m³/h [700 cfm]: ==> heatless
Volume flow ≥ 1200 m³/h [700 cfm]: ==> heat regenerative
heat regen.
heatless.
Volume flow in cfm
700

16. Adsorption Dryer Technology

17. System Solutions

18. System Solutions
with cap : 40000 m3/h

19. Breathing Air System

20. Thank you