Dryer Media

Desiccant Dryer Media | Activated Alumina & Silica Gel (-40°C/-70°C)

Spherical Activated Alumina and Silica Gel media for adsorption air dryers. High moisture capacity, low dusting, and -40°C/-70°C PDP — HAVKOM.

Our Service & Engineering Scope

Turnkey supply, calibrated engineering tests, and certified independent technical service for maximum plant uptime.

  • Desiccant chemistry selection (alumina vs silica gel) based on dryer regeneration type
  • Vacuum removal of degraded, oil-fouled spent desiccant media
  • Internal support mesh, ceramic bed support, and nozzle cleaning
  • Low-dust layer compaction and proper bed stratification
  • Upstream coalescing pre-filter inspection and renewal
  • Post-service pressure dew point testing to verify -40°C / -70°C performance
Desiccant Dryer Media | Activated Alumina & Silica Gel (-40°C/-70°C)
HAVKOM Mühendislik

Technical Specifications & Parameters

Key operating metrics, operational thresholds, and quality benchmarks engineered for uninterrupted industrial duty.

Particle Geometry3 – 5 mm Spherical Activated Alumina & Silica Gel
Chemical Purity93%+ Al2O3 (Alumina) / High Porosity Silica Gel
Dew Point Rating-40°C to -70°C PDP deep drying capability
Specific Surface Area≥ 320 m²/g (Ultra-high moisture adsorption)
Crush Strength≥ 120 N (Resistance to cyclical pressure attrition)
Service Life2 – 3 Years (With oil-free coalesced feed air)

Engineering Principles & Working Mechanism

Desiccant dryer media — primarily spherical Activated Alumina and Water-Resistant Silica Gel — are specialized porous adsorbents packed within adsorption air dryers to capture water vapor molecules down to -40°C or -70°C PDP. Their high crush strength and spherical geometry prevent attrition and downstream dust carryover.

While heatless dryers predominantly utilize 3–5 mm high-surface-area activated alumina, heated purge and blower-reactivated dryers often combine alumina with silica gel layers to maximize desorption kinetics and reduce regeneration power consumption.

At HAVKOM Engineering, we supply certified high-capacity spherical alumina and water-resistant silica gel, conduct full spent media vacuum extraction, clean internal support screens, and execute certified re-bedding services.

HAVKOM Independent Engineering Assurance

Detecting dew point elevation or desiccant dusting inside your dryer vessels? Our specialists evaluate activated alumina and molecular sieve adsorption capacity to apply the exact media that fully restores -40°C / -70°C PDP performance.

In-depth Technical Guide

What Is a Chemical (Adsorption / Desiccant) Dryer?

Read Article

Frequently Asked Questions

What is the standard replacement interval for activated alumina?

Under clean operating conditions, activated alumina lasts 2 to 3 years. However, upstream compressor oil carryover coats the microscopic pores, permanently neutralizing adsorption capacity in months.

Why is a downstream dust filter essential after a desiccant dryer?

Microscopic bed friction generates fine desiccant dust during pressure switching. A 1-micron particulate after-filter captures these abrasive particles before they reach pneumatic instrumentation.

Contact our engineering team for proper product sizing and quote request.