Compressed Air Purification - Adsorption Technology

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Compressed air purification

• - Paulus Hartanto -

Adsorption Technology
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Air compression
Compressed air p 8 bar a RH 100
Ambient air p 1 bar a RH 60
compressed to
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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

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Why compressed air purification ?

• Untreated compressed air consists of
• Condensate
• Dust particles
• Oil droplets
• this causes
• loss of quality
• loss of production
• increased costs

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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

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So why compressed air purification ?

• Treated compressed air
• is free of
• Condensate
• Dust particles
• Oil droplets
• this means
• maximised quality
• increased production
• reduced costs

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Types of Air Drying Processes
Compressed Air Dryer
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Typical Range of Application
Fridge Dryer
Typical Range of Application
Membrane Dryer
Adsorption Dryer
- 70C
- 20C
0C
15C
Pressure Dew Point
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Adsorption
Adsorption is ... ... Storing humidity Regenerati
on is removing humidity
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Types of Desiccant
Desiccant is... ... media which stores the
humidity We use
Microscope View of a Molecular Sieve
ultrasorb 16 Activated Alumina
ultrasorb 4 Moleculare Sieve 4A
enersave WS and N KC-Trockenperlen
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Typical Applications
Major using for Advantage
ultrasorb 16 Activated Alumina
Heatless Heat Regenerated dryers
Reliable and efficient Dew points 25 -50C
For low dew points and high inlet temperature Dew
points 40 -70C and better
ultrasorb 4 Molecular Sieve 4A
Heatless Heat Regenerated dryers
enersave WS and N KC-Trockenperlen
Reliable and efficient requires less reg.
temperature Dew points 25 -50C
Heat Regenerated dryers
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Typical Desiccants for Air Drying
Silicagel WS / N
Physical Properties
Activated Alumina
Molecular Sieve 4A
2,5 - 5 0,7 - 0,8 650 - 750
2 - 2,5 SiO2 97,0 Al2O3 3,0
2,5 - 5 0,68 - 0,72 800 -
1100 0,4 Crystal Zeolithe Na12 (AlO
2)12(SiO2)12 xH20
Particle Size mm Bulk Density kg/l Surface
Area m2/g Pore Diameter nm Chem. Analysis
wt
2,5 - 5 0,76 - 0,85 300 - 380
2 - 3 Al2O3 93,6 Na2O 0,5 SiO2
0,02 Fe2O3 0,02
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Adsorption Isothermes
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Rule of thumb Volume flow lt 1200 m³/h 700
cfm gt heatless Volume flow 1200 m³/h 700
cfm gt heat regenerative
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Adsorption Dryer Technology
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System Solutions
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System Solutions with cap 40000 m3/h
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Breathing Air System
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Thank you