The HHX and HHE Series
Hankison HH series heatless desiccant dryers are designed to efficiently dehydrate compressed air to dew points as low as ISO 8573-1 Quality Class 1 (-94°F/-70°C) Industries such as pharmaceutical manufacturing, laboratories, hospitals, microelectronics, food packaging, paper, glass, and powder painting with low dew point requirements, utilize heatless desiccant air dryers.
Feature
- HH series heatless desiccant air dryers are available with two application control systems designed to meet the needs of specific industrial applications for economy, performance, and energy savings
- Comprehensive offering: Eighteen models 40 to 5400 scfm (68 to 9175 nm3/h)
- Delivers stable ISO 8573-1 Quality Class 1 (-94°F/-70°C) to Class 4 (+38°F/+4°C) outlet pressure dew points
- Large diameter piping promotes low pressure drop and lower cost of operation
- Cleanable, stainless steel flow diffusers eliminate channeling through the bed
- Up-flow drying allows water and heavy contaminants to drop out of the air stream
- Separate fill and drain ports for ease of desiccant replacement
How it works
Phase 1
Moisture laden, filtered compressed air enters the pressurized on-line desiccant-filled drying Tower 1 through the AccuShift™ valve (A).
Phase 2
Up-flow drying enables the desiccant to strip the air stream of moisture. Clean, dry compressed air exits through AccuShift™ valve (B) to feed the air system.
Phase 3
When in regeneration mode, Tower 2 depressurizes to atmosphere through the muffler (C) when the valve (D) opens.
Phase 4
A portion of dry compressed air (purge air) is diverted before exiting (B) and passes through off-line Tower 2 and exits at valve (D) to desorb the moisture from the desiccant. Once desorbed, valve (D) closes and Tower 2 is repressurized.
Phase 5
At tower shift-over, valve (E) will open, causing AccuShift™ Valves (A & B) to shift.
Phase 6
Tower 2 will be placed on-line to dry the bed. Operations will switch and Tower 1 will be regenerated.
Simple Operation
The AccuShift ™shuttle valve is free to move back and forth closing the inlet having the lower pressure and giving preference to the inlet with the high pressure
HHX and HHE Series Specification
Maximum Working Pressure: 150 psi (10.5 bar) standard; 250 psi (17.6 bar) optional. Units with higher Maximum Working Pressures are available.
Minimum Operating Pressure: 150 psi (10.5 bar) service – 60 psi (4.1 bar); 250 psi (17.6 bar) service – 120 psi (8.4 bar)
Maximum Inlet Air Temperature: 140°F (60°C)
Maximum Ambient Air Temperature: 120°F (49°C)
Pressure Drop at Rated Flow: Less than 5 psi (0.35 bar)
Available Voltages: HHE – 100-120V/1ph/50-60Hz, HHS – 100-240V/1ph/50-60Hz and 12-24 VDC
Dimensions and weights are for reference only. Request certified drawings for construction purposes.
1 BSP and DIN flanges available
2 Supplied with premium quality butterfly switching valves
