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This dryer leverages pressure swing adsorption (PSA) technology to strip moisture from compressed air. It employs a dual-chamber system where each tower takes turns purifying the air; while one chamber captures water vapor, the other flushes out accumulated moisture using a fraction of the dried air—no electric heating involved.
Precision drying – holds pressure dew point consistently at -40°C or lower, preventing moisture-related failures in sensitive equipment
No heat, no waste – regeneration relies solely on compressed air, eliminating electrical heating elements and keeping operational costs low
Round-the-clock readiness – designed for nonstop performance in demanding industrial settings without performance degradation
Fewer parts, fewer headaches – minimal mechanical components mean less frequent servicing and easier troubleshooting
| 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-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 |
This dryer is a standard choice for applications where air purity is non-negotiable: laser cutting (prevents lens fogging and mirror contamination), CNC machining (protects spindles and tooling), pneumatic instrumentation (avoids erratic valve behavior), and food/beverage lines (ensures hygiene standards). It also pairs seamlessly with high-pressure systems up to 16 bar or more.
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.
