Overview
Activated Alumina is a premium desiccant engineered for reliable moisture removal in compressed air systems. Manufactured from aluminium oxide, this spherical adsorbent provides high surface area and porosity, making it effective in both heated and heatless adsorption dryers.
Activated Alumina is used across a wide range of industries where consistent dew point control is essential. Its high crush strength, thermal stability, and low attrition make it ideal for continuous operation in industrial compressed air treatment systems.
Key Features and Benefits
Features
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High static water adsorption capacity
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Uniform spherical beads for efficient packing
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Excellent mechanical strength and resistance to abrasion
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Stable performance across a wide temperature range
Benefits
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Long service life with minimal dust generation
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Consistent dew point performance for ISO 8573-1 compliance
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Suitable for use in both heated and heatless dryers
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Reduced maintenance and operating costs
Applications
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Compressed air adsorption dryers
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Instrumentation and pneumatic systems
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Medical and pharmaceutical-grade air
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Food and beverage packaging
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Electronic and semiconductor manufacturing
In advanced drying systems, activated alumina is typically used in the first stage of adsorption to remove bulk moisture, followed by molecular sieve to achieve ultra-low dew points for sensitive applications.
Condition Monitoring
Periodically monitoring the performance of the desiccant material in compressed air drying systems is crucial for identifying any issues and ensuring optimal results. When the desiccant’s adsorption capacity is exhausted or its performance begins to decline, timely replacement is necessary to maintain system efficiency and protect equipment.
Technical Specifications
| Property | |
|---|---|
| Shape | Sphere |
| Particle Size (mm) | 3 – 5 |
| Bulk Density (g/cm³) | 0.70 – 0.75 |
| Crush Strength (N) | ≥130 |
| Attrition Rate (%) | ≤0.1 |
| Static Water Adsorption (%) | ≥17.0 |
| LOI at 800°C (%) | ≤8.0 |
| pH (10% Solution) | 7 – 9 |
| Surface Area (m²/g) | ≥300 |
| Pore Volume (cm³/g) | ≥0.38 |
FAQs
Is activated alumina suitable for food and medical-grade compressed air?
Yes, activated alumina is chemically inert and widely used in food, beverage, and pharmaceutical compressed air systems.
Can activated alumina be regenerated?
Yes, it can be thermally regenerated using heated purge air. Recommended regeneration temperatures range between 150–300°C.
How often does it need replacing?
Typical service life is 2–3 years, depending on system conditions, inlet air quality, and regeneration cycles.
