Pressure Swing Adsorption (PSA) air dryer packages are among the most widely applied solutions for compressed air drying in industrial environments. Based on a dual-tower desiccant system, PSA dryers operate by alternating pressure cycles to adsorb and release moisture, ensuring a continuous supply of dry air.

This technology is particularly well suited for small to medium flow rates and applications requiring stable and low dew points. When properly engineered and controlled, PSA systems can achieve very low moisture levels, making them ideal for critical processes where air quality is essential. HADETEC PSA air dryer packages are delivered as fully integrated units, combining desiccant vessels, switching valves, filtration, and advanced control systems. Systems are equipped with PLC-based control for reliable operation and optimized regeneration cycles.

A typical PSA Type Air Dryer Package includes

• Pre-filtration / coalescing filter
• Twin tower adsorber beds with molecular sieve or activated alumina
• After filtration / particle filter
• Interconnecting piping with automatic switch valves & relief valves
• Field instruments including pressure, temperature, and flow measurement
• Dewpoint analyzer for continuous dewpoint monitoring
• Local control panel with indication, control & HMI interface compatible with plant DCS

Optional

• Integrated upstream air compressor
• Integrated dowstream nitrogen generator
• Wet Air or Instrument Air receiver

Key Features

For onshore applications, HADETEC Air Dryers are designed to operate reliably in harsh environments such as dusty, sandy, and high-temperature conditions, including hazardous classified areas. For offshore installations, designs focus on compactness, corrosion resistance, and durability to withstand marine conditions and limited available space.

Key characteristics include:

• Pressure vessel design: Filter housings & adsorber vessels designed in accordance with ASME VIII DIV.1/2 and U-STAMP or PED
• Robust construction: Engineered for continuous operation using high-quality, durable materials
• High durability: Use of corrosion-resistant materials such as SS316L components, 6MO and Super Duplex tubing
• Enhanced filtration systems: High-efficiency inlet filtration to protect against particles up to 0.01 micron
• Air quality performance: Capable of achieving ISO 8573-1 Class 2 for Pressure Dew Point (PDP), ensuring ultra-dry compressed air
• Offshore-grade protection: C5M/C5X coating systems for maximum corrosion resistance in marine environments
• Suitable for extreme climates: Winterization for extreme low ambient temperature and tropicalization for extreme high ambient temperatures
• Hazardous area compliance: ATEX/IEC-certified equipment
• Weatherproof design: IP55 - IP66 / NEMA 4X stainless steel 316L control panels
• Compact & modular skid design: Optimized layouts for easy transport, installation, and minimal footprint, especially suited for offshore deck limitations
• Engineering standards: Interconnecting piping designed in accordance with ASME or DIN standards

Each unit is tailor-made based on required flow, pressure, and dew point performance, ensuring optimal system efficiency and long-term reliability.