DRYPOINT® ADZ
Drum dryer for oil-free compressors that dries using waste heat
An oil-free compressor produces not only clean compressed air but also a lot of heat. The DRYPOINT® ADZ puts this to work: it dries the compressed air using waste heat from the final compression stage and needs not a single litre of purge air to do so. Everything your compressor produces reaches you in full.
Instead of two vessels constantly switching over, the DRYPOINT ADZ has a single drying drum that rotates slowly and evenly. Drying and regeneration take place at the same time. The result is a stable pressure dew point, little wear and a dryer that needs hardly any attention.
Flow rate
12 to 150 m³/min
Pressure dew point
down to −20 °C or better
Purge air loss
zero
Why the DRYPOINT ADZ?
Conventional desiccant dryers divert part of the dried compressed air for regeneration – up to 15 per cent, depending on design. You have paid for this air and then lose it again. The DRYPOINT ADZ instead uses heat that is generated anyway and would otherwise go to waste in the aftercooler.
This is good not only for your energy bill. Without refrigerants or F-gases, the dryer is also ready for future environmental regulations and improves your CO₂ balance.
- No purge air, no compressed air loss: regeneration using the compressor’s waste heat
- Runs without switchover pauses: no valve blocks, no depressurisation, little wear
- Quiet and space-saving: a single vessel, operating noise of no more than 30 dB(A)
- Dust-free: fixed honeycomb structure instead of loose desiccant
- Future-proof: no refrigerants or F-gases
- Control with display and Modbus as standard, dew point monitoring as an option
Who the DRYPOINT ADZ pays off for
Oil-free compressors
Designed for oil-free screw, turbo and piston compressors, whose hot compressed air it uses directly for drying.
Food and pharmaceuticals
Oil-free, dry and dust-free compressed air for production and packaging, where purity is non-negotiable.
Electronics and chemicals
Stable dew point for sensitive processes in the electronics, semiconductor, metal and chemical industries.
OEM and retrofit
Precisely matched to compressor, pressure and flow, also for containerised systems and existing stations.
How the DRYPOINT ADZ works
At its heart is a drying drum with a honeycomb structure that rotates inside a pressure vessel about six to ten times an hour. Most of the drum is drying the compressed air while a small sector is being regenerated at the same time. As the drum turns, each section continuously switches from one task to the other.
For regeneration, the dryer takes hot compressed air at 160 to 180 °C from upstream of the aftercooler. This drives the moisture out of the drum, is mixed back into the main flow via an ejector and cooled together with it. None of it is lost.
And this is how it works
- Compressed air leaves the compressor’s aftercooler at 32 to 40 °C
- A partial flow of hot air from upstream of the aftercooler regenerates the drum
- An ejector mixes the regeneration air back into the main flow
- A full-flow cooler, water- or air-cooled, brings the air to drying temperature
- The rotating drum dries the air, and two BEKOMAT® units drain the condensate without pressure loss
- Dry compressed air leaves the dryer, monitored by a dew point sensor on request
Product images
Technical data
Water-cooled version
| Model | Max. flow rate [m³/min] | Inlet/outlet wet/dry air [DN] | Hot air inlet [DN] | Cooling water [DN] | Dimensions L × W × H [mm] | Weight [kg] |
|---|---|---|---|---|---|---|
| ADZ010.1 W | 12 | 65 | 50 | 40 | 1650 × 800 × 1950 | 750 |
| ADZ015.1 W | 17 | 65 | 50 | 40 | 1650 × 800 × 1950 | 750 |
| ADZ020.1 W | 23 | 80 | 65 | 40 | 1550 × 1250 × 2150 | 950 |
| ADZ025.1 W | 27 | 80 | 65 | 40 | 1550 × 1250 × 2150 | 950 |
| ADZ030.1 W | 32 | 80 | 65 | 40 | 1700 × 1250 × 2150 | 1000 |
| ADZ040.1 W | 44 | 100 | 80 | 40 | 2000 × 1500 × 2300 | 1600 |
| ADZ050.1 W | 52 | 100 | 80 | 40 | 2000 × 1500 × 2300 | 1600 |
| ADZ060.1 W | 64 | 125 | 100 | 40 | 2000 × 1500 × 2600 | 1700 |
| ADZ070.1 W | 73 | 125 | 100 | 40 | 1900 × 1500 × 2600 | 1800 |
| ADZ080.1 W | 81 | 125 | 100 | 40 | 2000 × 1500 × 2600 | 1900 |
| ADZ090.1 W | 90 | 150 | 125 | 50 | 2100 × 1700 × 2900 | 2200 |
| ADZ100.1 W | 100 | 150 | 125 | 50 | 2100 × 1700 × 2900 | 2200 |
| ADZ125.1 W | 125 | 150 | 125 | 65 | 2050 × 1700 × 2900 | 2300 |
| ADZ150.1 W | 150 | 200 | 150 | 65 | 2300 × 1800 × 3100 | 3000 |
Air-cooled version
| Model | Max. flow rate [m³/min] | Inlet/outlet wet/dry air [DN] | Hot air inlet [DN] | Dimensions L × W × H [mm] | Weight [kg] |
|---|---|---|---|---|---|
| ADZ010.1 A | 12 | 65 | 50 | 1300 × 1100 × 2000 | 700 |
| ADZ015.1 A | 17 | 65 | 50 | 1300 × 1200 × 2000 | 750 |
| ADZ020.1 A | 23 | 80 | 65 | 1600 × 1250 × 2300 | 950 |
| ADZ025.1 A | 27 | 80 | 65 | 1600 × 1300 × 2300 | 1000 |
| ADZ030.1 A | 32 | 80 | 65 | 1600 × 1350 × 2300 | 1050 |
| ADZ040.1 A | 44 | 100 | 80 | 1900 × 1500 × 2400 | 1350 |
| ADZ050.1 A | 52 | 100 | 80 | 1900 × 1600 × 2400 | 1400 |
All models are also available as a VSD version for variable speed compressors. We will work out with you which size suits your compressor.
Frequently asked questions
What is a drum dryer and how does it differ from conventional desiccant dryers?
A drum dryer is a special type of desiccant dryer: instead of two vessels that alternately dry and regenerate, an adsorption drum rotates inside a single pressure vessel. As a result, the DRYPOINT ADZ works continuously and without switching cycles. This means less mechanical wear, greater reliability and consistent drying performance.
What pressure dew point does the DRYPOINT ADZ achieve?
Depending on operating conditions, reliably −20 °C or better.
How energy-efficient is the DRYPOINT ADZ?
Very: it regenerates using the compressor’s waste heat and loses no compressed air in the process. This keeps operating costs low. Because it works without refrigerants or F-gases, it also meets legal requirements and improves your CO₂ balance.
Is the DRYPOINT ADZ suitable for oil-free compressors?
Yes, that is exactly what it was developed for: oil-free screw, turbo and piston compressors.
How reliable is the drum dryer design?
A single vessel, one rotating drum, very few moving parts and no valve blocks: this design is robust. Because the dryer runs continuously without depressurisation cycles, the mechanics are hardly stressed. This ensures high reliability over many years, even under changing operating conditions.
Can the DRYPOINT ADZ cope with changing loads?
Yes. Adsorption and regeneration always take place simultaneously, and the air flow is designed for stable conditions. The dryer is therefore particularly well suited to fluctuating loads and frequency-controlled compressors.
Can the DRYPOINT ADZ be operated with variable speed compressors?
Yes, there is a dedicated VSD version. For technical details, prices or your specific project, we are happy to help.
Is the DRYPOINT ADZ suitable for OEM integration?
Absolutely. It can be precisely matched to compressor type, pressure and flow rate and integrates easily into compact compressor solutions.
Is the dryer available in different sizes and versions?
Yes. The DRYPOINT ADZ is available in several sizes, in air-cooled and water-cooled versions, and covers flow rates from 12 to 150 m³/min. Dew point monitoring and communication interfaces are available as options.
Is the adsorption material clean and dust-free?
Yes. The dryer works with a fixed honeycomb structure instead of loose desiccant. No dust is produced, making it ideal for sensitive areas such as the food, pharmaceutical and electronics industries.
Who helps me choose the right version?
We do. We analyse your application, design the system and put together the right configuration, for OEM projects as well as for end users. Call us or write to us.
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Which dryer suits your application?
Whether drum dryer, desiccant dryer or refrigeration dryer: what matters are the compressor, the pressure dew point and the flow rate. We advise you independently of any manufacturer and find the solution that suits your installation.