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Heatless Regenerative Adsorption Air Dryer for Industrial Compressors

1. Simple structure: No heating elements, low failure rate, and high reliability.
2. Ultra-low dew point: Can reach -20°C to -40°C, suitable for high drying requirements.
3. High adaptability: Suitable for power-free or explosion-proof environments (such as petrochemical and mining).
4. Easy maintenance: Only regular desiccant replacement is required, no complex heating system.
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  • SXD-10

  • Rocky

How It Functions

This dryer utilizes pressure swing adsorption (PSA) technology to eliminate moisture from compressed air systems. It operates with two alternating vessels—while one vessel actively removes water vapor from the incoming air, the other undergoes regeneration by venting a small volume of already-dried air to the atmosphere. The entire cycle runs without any external heat input.


SXD-06



Core Benefits

  • Exceptional drying capability – guarantees a pressure dew point down to -40°C, effectively preventing rust, corrosion, and freeze damage in downstream equipment.

  • Economical to run – consumes no electricity during regeneration; only a small percentage of compressed air is used as purge, minimizing utility expenses.

  • Built to endure – engineered with robust components that withstand continuous 24/7 operation in dusty, high-temperature, or otherwise challenging industrial conditions.

  • Service-friendly design – features easily accessible valves and a straightforward control system, allowing quick inspections and reducing technician time.


Technical Parameters

SXD Series Heatless desiccant air dryer

Model

Air Delivery

(m3/min)

Voltage
(V/HZ)
Power (kW) Inlet/Outlet
(PT)
Dimensions (mm)

Weight

 (Kg)

L*W*H
SXD-01 1.20 220V/50HZ 0.2 RC1” 670*460*1305 105
SXD-02 2.4 220V/50HZ 0.2 RC1” 670*450*1485 135
SXD-03 3.2 220V/50HZ 0.2 RC1” 850*500*1385 187
SXD-06 6.5 220V/50HZ 0.2 RC1 1/2” 1000*700*1700 238
SXD-08 8.5 220V/50HZ 0.2 RC2” 1100*700*2050 282
SXD-10 11.50 220V/50HZ 0.2 RC2” 1200*700*2030 466
SXD-12 13.50 220V/50HZ 0.2 RC2” 1300*700*2280 520
SXD-15 17.00 220V/50HZ 0.2 DN65 1300*820*2480 670
SXD-20 23.00 220V/50HZ 0.2 DN80 1380*820*2530 798
SXD-25 27.00 220V/50HZ 0.2 DN80 1650*900*2450 980
SXD-30 34.00 220V/50HZ 0.2 DN80 1700*955*2410 1278
SXD-40 45.00 220V/50HZ 0.2 DN100 1950*1000*2550 1624
SXD-50 55 220V/50HZ 0.2 DN100 2010*1170*2650 1624
SXD-60 65 220V/50HZ 0.2 DN100 2160*1470*2705 2650
SXD-80 85 220V/50HZ 0.2 DN125 2420*1550*2800 3520
SXD-100 110 220V/50HZ 0.2 DN150 2500*1650*2800 4320
SXD-120 130 220V/50HZ 0.2 DN150 2650*1650*2800 4750
SXD-150 155 220V/50HZ 0.2 DN200 2800*1700*2900 5260






























Primary Applications

This dryer is widely adopted across industries where compressed air quality directly affects production outcomes. In laser cutting operations, it prevents optical contamination that can compromise cut precision. For CNC machinery, it ensures consistent tool performance and extends spindle life. It is also essential in pharmaceutical manufacturing, electronics assembly, automotive painting, and beverage bottling—where even trace moisture can cause product rejects or equipment failure.


FAQ


Q1. How does a heatless adsorption dryer work?

It uses a dual-tower PSA system. While one tower adsorbs moisture, the other regenerates using a small amount of dry air (12–15%). The towers automatically switch every 4–10 minutes for continuous operation.


Q2. Is 15% regeneration air consumption a waste? How can it be reduced?

Regeneration air is necessary for physical adsorption. Consumption can be optimized by right-sizing the dryer and using a dew-point energy-saving control system, which can reduce it to 8–10%.


Q3. What causes a sudden increase in outlet dew point (e.g., -20°C to 0°C)?

Possible causes include adsorbent failure or pulverization, valve leakage, or incomplete regeneration.


Q4. Does a heatless adsorption dryer require a power source?

Only low-power control power (<100W) for solenoid valves and the controller—no high-power electricity is needed.


Q5. Which industries require heatless adsorption dryers?

Semiconductor manufacturing, medical ventilators, lithium battery coating, and food packaging.


Q6. What precautions should be taken when restarting after a shutdown?

If shutdown exceeds 48 hours, manually initiate regeneration to prevent adsorbent clumping. Start with a low flow rate for 10 minutes, then gradually increase to full load.


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