Post-treatment is an important part of a well-functioning compressed air system and ensures correct air quality, stable operation, and energy efficiency. The range includes, among other things, adsorption dryers, vacuum pumps, compressed air filters, drains, oil/water separators, as well as solutions for energy optimization, heat recovery, and leak detection.
Efterbehandling af komprimerede gasarter. Naturgas, CNG, Hydrogen, CO2. Under komprimering af andre gasarter er der også brug for tørring. Vi har et bredt udvalg af gas-tørrere fra førende producenter i Europa.
An adsorption dryer is a unit used to remove moisture from compressed air produced by compressors and compressed air systems, hvilket er afgørende i mange industrielle processer. Tørreren er designet til at absorbere fugt ved hjælp af et specielt tørremiddel, som gør det muligt at opnå tør og ren luft, der forhindrer korrosion og skader på udstyr.
Adsorption dryers work by passing the moist air through a desiccant, which absorbs the moisture and leaves the air dry. The desiccant can be chemical or physical depending on the type of dryer, and it is continuously regenerated either by cold or heat regeneration.
Choosing the right adsorption dryer depends on several factors, including the desired air quality, airflow, and the specific requirements of your production. It is important to consider how often the dryer needs to be regenerated, as well as whether cold or heat-regenerated solutions are required.
The drying process begins when the compressed air passes through the dryer, where the moisture is absorbed by the desiccant. Depending on the type of dryer, the desiccant is regenerated either continuously or in cyclic intervals to maintain efficiency.
Adsorption dryers can be either cold-regenerated or heat-regenerated. Cold-regenerated dryers use compressed air to purge the desiccant without heating, which is energy-saving and can be part of an overall energy optimization of the compressed air system, but requires more compressed air. Heat-regenerated dryers use heat to regenerate the desiccant, which can be more efficient in certain applications.
The purpose of an adsorption dryer is to ensure a constant supply of dry compressed air that is free from moisture. This reduces the risk of corrosion, extends equipment lifespan, and improves production reliability. Adsorption dryers are typically used in industries such as food processing, pharmaceutical production, electronics, and many others. Kontakt DTI A/S for more information on how an adsorption dryer can optimize your air quality
See all brancher, we operate in.
A heat-regenerated adsorption dryer operates by passing compressed air through a vessel containing a desiccant (adsorbent), which absorbs the moisture.
Adsorption: The moisture in the incoming compressed air binds to the surface of the desiccant in one vessel, while the other vessel "rests."
To remove the accumulated moisture from the saturated desiccant, external heat is applied (via an electric heater or a blower). The heat releases the water molecules from the desiccant. After heating, the desiccant is cooled down so it is ready to absorb moisture again.
When the vessels switch (cycle), the fresh vessel takes over the drying while the other is regenerated.
A heat-regenerated adsorption dryer can typically achieve a pressure dew point of -40 °C, but in special configurations can reach as low as -70 °C.
En koldtregenereret adsorptionstørrer (PSA-princip) fungerer efter samme princip som den varmeregenererede, men bruger ekspanderet trykluft i stedet for varme til at fjerne fugten.
The compressed air is dried in one vessel as the moisture binds to the desiccant.
A portion of the already dried compressed air (approx. 15–20%) is directed back through the saturated vessel at low pressure. The dry air "steals" the moisture from the desiccant and blows it out into the atmosphere. The vessels switch cycles at short intervals (typically every 3 to 5 minutes), so that one vessel is always in operation and one under regeneration.
Like the heat-regenerated type, it typically delivers a pressure dew point of -40 °C as standard, and can reach as low as -70 °C if required. The main difference is that you "pay" for the regeneration with already produced compressed air (purge air) instead of electricity for heating or a vacuum pump.
En vakuum-adsorptionstørrer er en mere avanceret og energieffektiv type tørrer, der kombinerer varme og vakuum til at regenerere tørremidlet.
Den største fordel er, at den minimerer eller helt eliminerer tabet af dyrt produceret trykluft.
Like the other types, it dries the incoming compressed air in one vessel while the other is being prepared.
Instead of using only heat or compressed air, a vacuum pump creates a negative pressure in the vessel to be regenerated. This allows the water molecules to be released at a significantly lower temperature than normal, which saves energy.
Because the vacuum helps to extract the moisture, the dryer requires little (or no) dried compressed air to "push" the moisture out. This means that 100% of the produced compressed air is available for production.
After heating, the desiccant is often cooled down using the vacuum pump, so it is ready for the next cycle without using compressed air for cooling. Pressure dew point: A vacuum adsorption dryer typically delivers a pressure dew point of -40 °C, but like the other types can be configured to reach as low as -70 °C.
Although the investment is higher, this type is often chosen for larger installations because it avoids the 15–20% compressed air loss seen in cold-regenerated dryers and achieves more efficient operation than pure heat regeneration.
At Dansk Trykluft Industri, we offer a complete range of compressed air filters for industrial use – from standard filters to high-pressure and specialized filters for demanding applications. Our solutions ensure maximum operational reliability, low energy consumption, and clean compressed air, whether you work with food production, pharmaceutical processes, pneumatic control, or heavy industry. Compressed air containing oil, moisture, or particles can lead to wear, production stoppages, and quality issues. With efficient filters from Dansk Trykluft Industri, you can protect your system while reducing operating costs.
We supply compressed air filters in many variants and pressure classes, so you can always find the solution that fits your installation:
All our filters are manufactured in accordance with applicable ISO 8573 standards and PED directives, and we offer models from leading manufacturers such as Donaldson, Drytec, and PVR.
See also the range of generators for the production of nitrogen and oxygen.
Modern compressed air filtration is not only about clean air – but also about energy optimization. Our filters are designed with low differential pressure, which significantly reduces energy consumption. According to test data (e.g. the Donaldson Ultra-Filter series), a reduction of just 200 mbar in differential pressure can save more than DKK 1,500 per year per filter under normal operation. Many of our filters are available with Economizer monitoring, which automatically indicates when the filter element should be replaced to maintain optimal performance. This means lower operating costs and fewer unplanned stoppages.
Every compressed air system has its own requirements. That is why we offer sizing and consultancy, so you get the correct solution – both in relation to:
We assist both with the replacement of existing filter solutions and with the design of new systems that ensure stable air quality and energy-efficient operation.
A refrigerated dryer is the most common type of dryer used to remove moisture from compressed air. It works in principle like a refrigerator, where the moisture is removed by cooling the air.
The warm, moist compressed air from the compressor is directed into the dryer, where it is first cooled by the cold air exiting the dryer. This saves energy.
Afterwards, the air is passed through a cooling surface (evaporator), where a refrigerant cools the compressed air down to approx. +3 °C. Since cold air cannot hold nearly as much moisture as warm air, the moisture condenses into water droplets (condensate).
The water droplets are collected in a water separator and discharged from the system via an automatic drain. The now dry (but cold) air is reheated slightly before being sent into the piping, so that condensation does not form on the outside of the pipes. Our refrigerated dryers are of very high quality and are available in several variants and many sizes, depending on the need.
A refrigerated dryer can typically produce a pressure dew point of +3 °C.
Fill out the form, and we will contact you as soon as possible. If you need urgent assistance outside normal working hours, our phones are automatically redirected to 24/7 service.
