Regenerative Desiccant Compressed Air Dryers

Features

Hankison Modular Desiccant Air Dryers

• These desiccant dryers have aluminium components to resist corrosion due to moisture.
• They prevent fluidisation and slow / complete regeneration to avoid desiccant ageing.
• These units have a strong internal sound attenuation, ensuring quiet operation.

Ingersoll Rand Air Dryers

• They have microprocessor controllers and additional air filters to remove oil and contaminants.
• These dryers are designed for applications with high air flow (up to 120 cfm).
• Their bodies feature stainless steel construction to resist contamination due to water vapour produced during the operation.

Working Mechanism

• When the compressed air enters the dryer, it passes through one of the towers filled with the desiccant material.
• As the air moves through the desiccant, the moisture in the air is adsorbed by the desiccant material, leaving behind dry compressed air.
• The dry air then exits the dryer and is ready for use in various industrial applications.
• Once the first tower has reached its capacity to absorb moisture, the dryer switches over to the second tower, while the first tower goes through a regeneration cycle.
• During the regeneration cycle, the second tower is shut off and the first tower is depressurised and the desiccant is heated using electric heaters or natural gas burners.
• The heat source evaporates the moisture that was adsorbed by the desiccant and vented out of the dryer as hot, moist air.
• The hot, moist air is then purged from the tower using a purge air flow, which carries away the moisture and vents it outside the dryer.
• The regenerated first tower is then re-pressurised and the drying cycle resumes with the second tower now in the regeneration cycle.