Compressed Air Purification - Adsorption Technology

Compressed air purification: 

Compressed air purification - Paulus Hartanto - Adsorption Technology

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

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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 Compressed air is contaminated with :

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

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...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 The compressed air that is....

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

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

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

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

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

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

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

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Adsorption Isothermes

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