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Hankison heatless regenerative desiccant air dryer
Hankison Heatless Regenerative Desiccant Air Dryer
The following below came from Hankinson's web site for the current model. Ours is older but based on the same principles and similar design of operation.
Since 1948, sensitive applications requiring clean, dry, compressed air have turned to Hankison for the optimal solution. Utilizing twin towers filled with premium grade activated alumina, Hankison Heatless dryers are available with 3 application specific control systems to meet the needs of industry with economy and performance. Hankison HHS, HHL or HHE Series heatless desiccant dryers provide consistent outlet pressure dew points to -100 F (73 C).
Microelectronics, food packaging, paper, glass, pharmaceutical, powder painting, hospital laboratories represent a small sample of industries that use desiccant dryers.
* Left and right tower pressure gauges
* Moisture indicator alerts operator of elevated dew point
* Throttling valve provides accurate purge pressure adjustment.
HHE Series-40 F Dew Point Performance - Pure and Simple
HHE Series presents traditional heatless drying technology. Using a simple timer based controller, these are designed to deliver maximum value to applications that operate at or near full capacity. Automatic time controlled bed regeneration cycles offer consistent performance and economy of purchase
For more detailed information regarding the HHS, HHL & HHE Series dryers, download the PDF file or request a hard copy.
Contact us at +1 (***) 745-1555.
CONSISTENT OUTLET PRESSURE DEW POINTS: INDUSTRY-LEADING DESICCANT BEDS
Premium grade desiccant beads offer enhanced surface area and high crush strength which prolongs bed life
Large desiccant beds ensure 4.8 seconds of contact time...allows wet,
saturated air at the dryer inlet to be dried to the required dew point
30% extra desiccant provided to compensate for natural bed aging...ensures top performance over expected 3 to 5 years of desiccant bed life
Large flow diffusers ensure even flow distribution through the bed and eliminate channeling
Towers are sized so that air velocity through the bed won't fluidize the desiccant which prevents bed movement and desiccant dusting
Up-flow drying allows water and heavy contaminants to drop out of the air stream as they enter a tower which protects the bed from contamination. This makes it simple to discharge the contaminants when the tower depressurizes.
Cleanable stainless steel flow diffusers/support screens and separate fill and drain ports for ease of desiccant replacement
Pressure vessels are CRN and ASME Certified
NEMA 4 electrical construction is standard
Pressure relief valves are standard
Moist, filtered compressed air enters the pressurized on-line desiccant-filled drying Tower 1 through
AccuShiftTM valve (A). Up-flow drying enables the desiccant to strip the air stream of moisture. Clean, dry
compressed air exits through AccuShiftTM valve (B) to feed the air system. Tower 2 (when in regeneration
mode) depressurizes to atmosphere through muffler (C) when valve (D) opens. 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. At tower shift-over, valve (E) will open, causing AccuShiftTM Valves (A & B) to shift. Tower 2
will be placed on-line to dry the bed. Operations will switch and Tower 1 will be regenerated.
