Combination Externally Heatless Regenerative Air Dryer

Combination Externally Heatless Regenerative Air Dryer(KRD-100WXF).

Low power consumption heater prevents desiccant from premature aging.

Advanced and user friendly electronic control panel.
High performance and reliable butterfly valves, have working cycle over one million times.
LCD display panel for the monitor of dryer performance (Remark: LED display panel for heatless type desiccant dryers).
High quality pressure gauges display left column, right column and purge air pressures.

We are specialized in providing compressed air products and solution to our customers all over the world. Our JV manufacturing facility is in Southern China and that our financial & logistics headquarter is in Hong Kong. Our product range includes Standard screw air compressor(3-315 kW), Low and High pressure rotary screw air compressor, Oil free screw/scroll compressors, VSD inverter controlled screw compressors,Railway application compressors, Underground application compressors, Biogas/Landfill gas compressor, CNG / LPG application compressors,Refrigerated air dryers, Desiccant air dryers and Inline air filters/water separator.

This series of desiccant dryer incorporates the working principles of pressure swing adsorption and temperature swing adsorption. Desiccant absorbs water moisture in drying column and being regenerated with high quality dried and heated purge air in regeneration column by air thermal diffusion and high pressure difference mechanisms.

The compressed air flows from the bottom to the top of one of the two columns (A) for a certain period of time and transfers water vapour to the adsorbent substance. At the same time, 14% of the dried air passes through a by-pass, expands to atmospheric pressure and flows from the top to the bottom of the other column (B) removing the moisture that the adsorbent substance had adsorbed during the previous cycle. This phase, known as the regeneration phase, is shorter than the drying phase in order to allow the regenerated column time to return to operating pressure. (2) A new cycle begins, passing the incoming compressed air into column (B) while column (A) is now regenerated.

Future of KRD Series Refrigerated Desiccant Combination Air Dryer
Dry air outlet at low dew point
Extended desiccant service life
Lower maintenance costs
Refrigeration and drying units, filters are all located at one skid for easier access
Advanced auto-mode control system

Less purge air amount is required. Since the compressed air is already dry, purge air amount can be reduced to 3%
Working conditions:
Purge air : ≤ 3 ~ 5 %
Working pressure: 0.6 ~ 1.0 MPa
Outlet air pressure dew point: - 35 ~ -80 °C
Desiccant:activated alumina + molecular sieves
Working period: 4 ~ 30 minutes (adjustable)
Inlet air temperature: 0 ~ 45 °C
Pressure loss: ≤0.02Mpa

Technical Parameters