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A cold regenerated adsorption dryer is a device used to remove moisture from compressed air or gas. It operates under the adsorption principle basis, when vapors are absorbed by an adsorbent. This equipment is widely used at industrial enterprises where processes and devices require clean air with its complete drying to negative dew point temperature in accordance with the GOST R ISO 7183-2017 standard.

The ONH Systems Company offers to purchase an adsorption-type dryer of its own production. You will receive a fully equipped compressed gas treatment system with integrated pre-filters and finishing filters, as well as an automatic electronic condensate drain.

Operation Principle

Two columns of adsorption dryers are filled with a special moisture-absorbing substance—adsorbent (active aluminum oxide, zeolite, silica gel). Let’s consider the operation principle of this equipment in detail:

  1. The cold regenerated adsorption dryer receives a compressor-pressurized stream of moist air, which passes through a layer of adsorbent material under pressure, and the moisture is absorbed by it, resulting in dried compressed air at the outlet.
  2. In parallel, another column receives a small portion of compressed dry air, which regenerates the adsorbent.
  3. Dry air is then fed to the dryer outlet and further into the pipeline system.
  4. All drying processes are controlled, and operational indications are given to an operator via a control panel consisting of a PLC, an operator panel, valves, and sensors.

In cold regeneration, a portion of dried compressed air is used to regenerate the adsorbent. It is fed into the desiccant bed in such a way that dry air absorbs the accumulated moisture and removes it. The regeneration process is then carried out without heating.

Cold Regenerated Adsorption Dryer Components

Equipment main components:

  1. Pressure gauge.
  2. Pressure vessel.
  3. Automated control system.
  4. Inlet/outlet air filtration system.
  5. Pneumatic silencer.
  6. Pneumatic air supply valves.

Cold Regenerated Adsorption Dryer Advantages

The unit features the following characteristics:

  1. Easy installation and operation.
  2. Compact dimensions.
  3. The set dew point precise maintenance at -40°C.
  4. Long production life due to the adsorber’s durability.
  5. Significantly lower equipment cost compared to heat regeneration dryers.
  6. Compressed air losses for regeneration at nominal capacity and pressure are no more than 10-15%.
  7. Compact dryer dimensions allow you to install it in a container or in closed premises.

In addition, dryer units can be optionally equipped with following instrumentation and automation:

  • inlet and outlet air pressure sensors;
  • outlet air dew point sensor;
  • outlet air temperature sensor;
  • outlet air flowmeter.

What benefits do you get from this? For example, adding a dew point sensor or flow meter allows you to manage cycle times and operate your equipment more efficiently and optimize energy costs in your facility. Our cold regeneration adsorption dryer uses activated aluminum oxide as the adsorbent. Optionally, silica gel can be used.

Model Range

Model Demand, m³/hour Connection
Inlet Outlet
Airstat-20 20 17 DN15
Airstat-30 30 26 DN15
Airstat-45 45 38 DN15
Airstat-60 60 51 DN15
Airstat-80 80 68 DN20
Airstat-100 100 85 DN20
Airstat-150 150 128 DN25
Airstat-200 200 170 DN25
Airstat-300 300 255 DN40
Airstat-400 400 340 DN40
Airstat-600 600 511 DN40
Airstat-800 800 681 DN50
Airstat-1000 1000 851 DN50
Airstat-1200 1200 1021 DN50
Airstat-2000 2000 1702 DN65
Airstat-2500 2500 2128 DN75(80)
Airstat-3000 3000 2553 DN75(80)
Airstat-3500 3500 2979 DN100
Airstat-4000 4000 3404 DN125

How to order equipment?

For equipment or additional functionality purchase and pricing, please contact us by phone +7 (495) 150-44-22. You can also send your inquiry and technical requirements to the following e-mail address: info@onhs.ru.

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