We offer a full range of oil-free adsorption dryers, from energy efficient cold regenerated models to powerful hot regenerated systems. Depending on your compressed air consumption, desired dew point and energy priority, we always choose the most suitable solution with a focus on reliability and low operating costs.
An adsorption dryer is a compressed air drying system that uses a hygroscopic (moisture-adsorbing) material, such as silica gel, molecular sieve or activated alumina. Compressed air is passed along this material, which “adsorbs” water from the air. The adsorbent is then regenerated (dried) so that the moisture that had been retained is removed, allowing the material to be reused. This regeneration process can be done in various ways (without heat, with heat, with blower air, etc.).
At JustAir, we supply adsorption dryers for industrial compressed air systems, focusing on:
Extremely low pressure dew points (PDP) – for applications requiring very dry air (e.g. -40 °C or even -70 °C).
Oil-free air quality & process integrity – important for petrochemicals, pharmaceuticals, food, electronics, and all processes where moisture and contamination are problematic.
Energy efficiency & lower operating costs – our dryers feature smart controls, division of regeneration air, zero-purge variants etc.
Reliability & uptime – robust construction, long life of adsorbent, service support & monitoring 24/7.
Scalable & flexible – from smaller capacity for specific processes to large twin-tower systems for entire production plants.
Drying phase: wet compressed air is passed through one or more adsorption towers. During this phase, the adsorbent absorbs the moisture.
Regeneration phase: once the adsorbent is saturated, it is regenerated so that it can reabsorb moisture. Regeneration can be done via:
Heatless (heat-dissipating air): using dried compressed air for regeneration. Simple, but with purge air loss (~ 15-20 %) depending on design.
Heated purge: additional heating of the purge air to reduce purge air volume and reduce energy loss.
Blower purge / blower-regenerated dryers: ambient air is heated and used; often without loss of compressed air volume. Very efficient in large installations.
Heat-of-compression / heat recovery variants: using waste heat from compressors or other sources. Ideal for reduction of additional energy demand.
Tower change: there are often two towers. When one is in dry phase, the other undergoes regeneration. Thus, dry air is always available.
Our JustAir adsorption dryers are particularly valuable at:
Processen met lage omgevingstemperaturen of grote variaties in temperatuur. Condensatiedrogers presteren veel slechter bij koude omstandigheden.
Applications where very dry air is required, for example in pharmaceuticals, coatings, spray processes, or with sensitive materials.
Installations where product quality, product safety and regulations (such as for food, pharma, cleanrooms) place high demands on air quality.
Situations where condensation and moisture problems lead to failures, corrosion, product failure, maintenance costs. Adsorption prevents those problems.
Production sites striving to minimize operational costs over the life cycle, through lower downtime, less corrosion, and energy-efficient drying.
Pressure Dew Point (PDP): standard options e.g. -40 °C, -70 °C for severe requirements.
Capacity- air flow rate: from small models to large installations (e.g., hundreds to tens of thousands of m³/h).
Working pressure: design for common compressors; often 4-10 bar or higher depending on project.
Regeneration type: choice depending on capacity, PDP, budget, energy prices.
Materials & construction: long life of adsorbent, robust towers, good sealing; minimize pressure loss.
Control & monitoring: PDP sensors, load dependent control, alarms, reports, connectivity (remote monitoring).
| Advantage | You notice it because … |
|---|---|
| Expertise in oil-free systems & compressed air quality | Your products are not sprayed with oil or contaminants. JustAir guarantees air quality in accordance with ISO standards. |
| Full service & 24/7 monitoring | We provide preventive maintenance, online monitoring KPIs, immediate support in case of anomalies. |
| Air-as-a-Service model possible | You avoid large investment costs, pay based on usage/efficiency, we take care of installation & maintenance. |
| Energy orientation in design. | Models are selected based on efficiency, frequency of regeneration, purge air loss, etc., so that operating cost remains low. |
| Local presence & rapid intervention | For Belgium / Northern Europe we can provide fast delivery and service, spare parts available in Deinze / Ghent region etc. |
A coating technology company replaced an outdated refrigerated dryer with a blower-purge adsorption dryer with -40 °C PDP: operating flow dropped by 20-30 %, condensation problems disappeared, finished products previously rejected, now consistently finished.
Pharmaceutical application: due to drier air, tablets are more stable, production downtime due to moisture reduced, compliance with GMP standards improved.
In food industry: storage of grains / flour. Reduction of mold or moisture damage, lower wastage, better shelf life.
Free drying analysis of your compressed air system – JustAir comes on-site or virtually measures moisture in-flow, dew point, energy consumption.
Custom quote – details to be supplied: air flow rate, desired PDP, operating pressure, ambient temperature, budget.
Demo pilot plant – possibility to test for a shorter period how our adsorption dryer works within your process.
Our adsorption dryers combine high-quality components with compact design and smart control. They are built for maximum reliability and performance in demanding conditions. Thanks to advanced regeneration techniques, they offer an optimal balance between energy consumption and dew point quality.
Find out how JustAir can add value to your operations. Call us or send us an email for a no-obligation demonstration and analysis of your needs.
