Compressed Air & Gas Drying

Industrial Adsorbents for Compressed Air and Gas Systems

Moisture in compressed air and gas systems is one of the leading causes of equipment failure, corrosion, and process inefficiency. Effective drying is critical to ensuring reliable operation, consistent product quality, and long-term protection of downstream equipment such as valves, instrumentation, and PSA gas generation systems.

SORB-TECH supplies high-performance desiccant media and engineered solutions designed to achieve stable dew points across a wide range of industrial applications.

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When is desiccant drying required?

Desiccant (adsorption) drying is required when low dew points are critical to system performance.

Dry
-20°C
Dew Point

General Industrial Use

For applications requiring basic moisture removal

Common Applications

Plant Air Systems
Light Moisture Protection
Pneumatic Equipment
Non-critical Applications
Very Dry
-40°C
Dew Point

Industry Standard

The most common dew point for industrial compressed air systems

Common Applications

Instrument Air Systems
Process Air Applications
Outdoor Piping Protection
General Industrial Use
Ultra Dry
-70°C
Dew Point

Critical Applications

For applications requiring extremely low moisture levels.

Common Applications

Electronics & Pharmaceuticals
Food & Beverage Processing
Freeze Protection Environments
Sensitive process Applications
DRY ULTRA DRY
-20°C
-40°C
-70°C

How Adsorption Drying Works

Adsorption dryers use desiccant media to remove water vapour from compressed air or gas streams. Moisture is attracted to and held within the internal pore structure of the adsorbent material through a physical adsorption process.

Unlike absorption, where moisture is dissolved, adsorption binds water molecules to the surface of the desiccant, allowing for efficient removal and regeneration.

Most industrial systems operate using a twin-tower configuration, where:

  • One tower dries the compressed air
  • The second tower regenerates the saturated desiccant
  • The system switches continuously to maintain consistent performance and low dew point

This process enables reliable moisture removal and ensures continuous operation in critical industrial applications.

Typical Drying System Configuration

A properly designed drying system includes more than just desiccant.

Standard System Layout

  • Pre-filtration - Removes oil, liquid water, and particulates
  • Refrigeration dryer (optional) - Reduces bulk moisture load
  • Desiccant dryer - Achieves low dew point
  • After filtration - Removes fines and protects downstream systems

Proper system design significantly extends desiccant life, improves efficiency, and ensures long-term reliability.

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Recommended Adsorbents

Selecting the correct adsorbent is critical to achieving reliable performance and long service life.

Activated Alumina

Alusorb

Best for: General-purpose compressed air drying

  • Robust and cost-effective
  • High crush strength and long life
  • Suitable for -20°C to -40°C dew points

Molecular Sieves

Zeosorb

Best for: Low dew point / critical applications

  • Achieves very low dew points (-40°C to -70°C)
  • High water adsorption capacity
  • Ideal for PSA systems and sensitive processes

Silica Gel

Silsorb

Best for: Pre-drying and protection layers

  • Low regeneration Temperature
  • Protects primary desiccant from liquid moisture
  • Extends system life
product specifications
Activated Alumina
(Alusorb)
Detailed Specs. Tecnical Data. Easy Access.
View Product Specifications
product specifications
Molecular Sieves
(Zeosorb)
Detailed Specs. Tecnical Data. Easy Access.
View Product Specifications
product specifications
Silica Gel
(Silsorb)
Detailed Specs. Tecnical Data. Easy Access.
View Product Specifications

Why Media Selection Matters

Incorrect or poor-quality desiccant selection can lead to:

  • Unstable dew point performance
  • Increased energy consumption
  • Pressure drop and flow restriction
  • Dusting and downstream contamination
  • Premature media replacement

SORB-TECH assists customers in selecting the correct media based on operating conditions, ensuring optimal performance and reduced lifecycle cost.

Engineered Solutions

SORB-TECH provides more than just adsorbents - we deliver complete drying solutions.

We assist with:

  • Desiccant selection and sizing
  • Troubleshooting existing dryer performance
  • Media replacement programs
  • Integration with compressed air systems (via ZAN-TECH)
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Dedicated Supplier of High-Quality Adsorbents.