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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

Heatless adsorption dryers (heatless regenerative adsorption dryers) use the pressure swing adsorption (PSA) principle to remove moisture from compressed air using adsorbents (such as molecular sieves and activated alumina) and restore the adsorbent's drying capacity through heatless regeneration.

SXD-06


Product features

1. Energy-efficient and highly efficient, with low operating costs

2. Simple structure and easy maintenance

3. Stable ultra-low dew point

4. Oil-free and pollution-free

5. Long-life adsorbent

6. Adaptable to high load fluctuations


Technical Parameters

SXD Series Heatless desiccant air dryer
Model

Air Delivery

(m3/min)

Voltage
(V/HZ)
Power (kW) Inlet/Outlet
(PT)
Dimension (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
































Main Applications

  • Oil & Gas: Instrument air for explosion-proof environments

  • Power & Chemical: High-purity compressed air requirements

  • Railway & Marine: Environments with unstable power supply

  • Laboratories & Precision Manufacturing: Ultra-low dew point requirements


FAQ

Q1. How does a heatless adsorption dryer work?

A. Principle: It uses a dual-tower pressure swing adsorption (PSA) system: While one tower adsorbs moisture, the other tower purges and regenerates the adsorbent (molecular sieve/alumina) with a small amount of dry air (approximately 12-15%).

Cycling: The dual-tower operating state is automatically switched (adsorption tower → regeneration tower) every 4-10 minutes, ensuring continuous air supply.


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

A. Necessity: Regeneration air consumption is an inherent characteristic of physical adsorption and is used to remove moisture from the adsorption tower.

Optimization Method: Optimize the model to match actual air consumption.

Install a dew point energy-saving control system: Automatically adjust regeneration air consumption based on humidity (reducing it to 8-10%).


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

A. Adsorbent failure, adsorbent pulverization, valve leakage, or incomplete regeneration.


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

A. Only control power is required: to drive the solenoid valve and controller (power <100W), no high-power electricity is required (unlike micro-heating types).


Q5. Which industries require heatless adsorption dryers?

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


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

A. Adsorbent regeneration: If the system has been down for >48 hours, the regeneration process must be manually initiated to prevent wet adsorbent from clumping.

Gradual loading: Start with a low flow rate for 10 minutes, then gradually increase the load.

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