For more informations on our  products application  field, go and see our guide !

Adsorption Air Dryer          Fridge Air Dryer          Membrane Air Dryer

CO₂ REMOVAL AIR DRYER

SPECIFICATIONS / BENEFITS

• Delivered air quality : ISO8573.1 Class 1.2.1 : dewpoint – 40°C ; HCs (non CH₄) <0,01 ppm ; Particles < 0,1 micron

• Maintenance easy : Consist to change the filters and the dessicant packed in cartridges. Maintenance alarm.

• Protection of the analytical instruments

• Increased safety

• Economy

• Easy to install

APPLICATION

A supply of compressed air is an essential utility for any modern laboratory.

Compressed air contains water, oil and dirt which can wear the pneumatic instruments and affect the performance and life time of the analytical instruments.

The air dryers are ideal for laboratory use, providing a constant flow of clean, dry compressed air for :

• GC-FID, RMN, AA, ATD, Rheometers, ELSD, Auto Samplers

• Before a zero air generator if the air network is not clean and dry

• Before a nitrogen generator if the air network is not clean and dry

 

OPERATING MODE

The F-DGS dryer uses the pressure swing adsorption principle of drying compressed air, utilising two  identical columns each containing a hygroscopic desiccant bed. Wet air from the compressor after-cooler enters the dryer through a shuttle valve and is directed into one of the desiccant columns. Each column contains a unique (and patented) desiccant cartridge which incorporates inlet and outlet filtration. Bulk liquids (water) and particles are removed by the filtration/separation stage which is located on the inlet to the cartridge. Water is retained in a “quiet zone” until the column is regenerated (when it will be vented to atmosphere as the column is depressurised).
Following the filtration stage, air passes through the desiccant bed where any remaining moisture is adsorbed. After drying, the air passes through a particle filter, which retains any remaining desiccant particles that may have been carried through the system (<1 micron / ISO 8573.1 class 2 for dust). Simultaneously, a small amount of dry air is counter-flowed down through the other cartridge and exhausted to atmosphere, removing the moisture and thus regenerating the desiccant. The dryer is controlled by a PLC which periodically switches the solenoid valves when the compressor is running, reversing the function of each column and therefore ensuring the continuous supply of dry air.

Download documentation in PDF format !

• doc PDF Sécheur Adsorption

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• SÉCHEUR D’AIR SANS CO2 

SPECIFICATIONS / BENEFITS

• Outlet CO2 content to less than 1 PPM
• Outlet flow capacities up to 120 L/min
• Air dried to less than -70°C (-100°F) dew point
• Compact and lightweight design requires less space
• PLC control with clear display provides feedback
• Full repressurisation means no pressure fluctuations

Quiet Operation
• Novel exhaust air silencer significantly reduces noise levels (<60dB).

Easy to Maintain
• Unique factory built filtration and adsorption cartridge makes servicing simple.
• Less than 15 minutes required for maintenance.

APPLICATION

The CO2 adsorption dryers purify regular compressed air to deliver a continuous supply of clean, dry (-70 °C pdp) and CO2 free (<1 ppm) purge gas. CO2 adsorption dryers replace high pressure oxygen or nitrogen gas cylinders and are ideal for numerous applications including :

• TOC purge

• FT-IR (Fourier transform infrared) purge

• NMR

• GC flame gas

• laser purging.

OPERATING MODE

The F-DGS dryer uses the pressure swing adsorption principle of drying compressed air, utilising two  identical columns each containing a hygroscopic desiccant bed. Wet air from the compressor after-cooler enters the dryer through a shuttle valve and is directed into one of the desiccant columns. Each column contains a unique (and patented) desiccant cartridge which incorporates inlet and outlet filtration. Bulk liquids (water) and particles are removed by the filtration/separation stage which is located on the inlet to the cartridge. Water is retained in a “quiet zone” until the column is regenerated (when it will be vented to atmosphere as the column is depressurised).
Following the filtration stage, air passes through the desiccant bed where any remaining moisture is adsorbed. After drying, the air passes through a particle filter, which retains any remaining desiccant particles that may have been carried through the system (<1 micron / ISO 8573.1 class 2 for dust). Simultaneously, a small amount of dry air is counter-flowed down through the other cartridge and exhausted to atmosphere, removing the moisture and thus regenerating the desiccant. The dryer is controlled by a PLC which periodically switches the solenoid valves when the compressor is running, reversing the function of each column and therefore ensuring the continuous supply of dry air.

Download documentation in PDF format !

• doc PDF Sécheur Sans CO₂

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• FRIDGE AIR DRYER

STANDARD FEATURE / BENEFITS

• Without danger to the environnement : the cooling agent used  R134a is inoffensive and not polluting

• Compact and easy to install

• Easy Maintenance : frontal access for any spare parts

• Multi fonctionnal display

• Automatic drain

APPLICATION

The supply of compressed air in the laboratories is of an essential utility. But the compressed air contains water, oil and dust which can deteriorate the pneumatic instruments and affect the lifespan of the analytical instruments. The fridge dryer makes it possible to treat the air coming from a compressor by lowering the dewpoint of water to +3°C and to ensure a quality of air in conformity with the standard ISO 8573.1 Class 1.4.1.

It is advised for:

All analytical instruments where moisture in too great quantity can be problematic

when a non lubrified compressor is used

when nitrogen purity is less than 99,5%

when a lubrified compressor is used, we recommend to use a adsorption dryer

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• doc PDF fridge dryer

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• MEMBRANE AIR DRYER

STANDARD FEATURE / BENEFITS

• Compact : Easy to install can be fixed on the wall

• No electrical requirement

• Silent

• Precognized to be install near the point of use

• Permit to lower the dew point to -20°C to the point of application

• Air loss : between 10 and 15%

APPLICATION

is ideal for :

• lower the water dew point to -20°C to the point of use for analytical instrument which require a quantity of moisture not to high

                                                     OPERATING MODE 

The chain of purification begins with the air/water filter separator (SFPE). It retains the biggest particles by an effect of sieve and the oil and water droplets by an effect of cyclonic separation. Thisfilter protects submicrofiltre against the biggest contaminants. The air coming from the submicrofiltre enters the air dryer and passes in the center of a beam of micro porous membranes. These membranes allow the retention of the moisture contained in the compressed air whereas the air passes in the center of the beam of membranes. A part of dry compressed air is used with against current outside the beam to push the water separated towards theoutside of the dryer. The produced air leaves to be used directly or to pass towards another stage of treatment (Activated carbon filter to eliminate the oil vapor). The purified compressed air leaves the dryer to the operating network pressure.

Download documentation in PDF format !

• doc PDF membrane air dryer

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