Heatless Desiccant Air Dryer - SXD Series
The heatless regenerative desiccant dryer is designed for moisture removal from compressed air through heatless pressure swing adsorption (PSA). This system offers energy-efficient operation by eliminating the need for external heat sources during regeneration.
Developed through the integration of advanced international technologies and tailored to meet domestic application requirements, our heatless desiccant dryers deliver high-quality, oil-free, and moisture-free compressed air. Under standard operating conditions, these dryers achieve pressure dew points as low as -40°C, with performance extending to -70°C for critical applications. Ideal for industries demanding ultra-dry air, particularly suited for cold climates such as northern regions and environments with ambient temperatures below 0°C.
The heatless desiccant drying system features a twin-tower design where one tower operates under pressure to adsorb moisture from the compressed air. Simultaneously, a small portion of dried air is used to regenerate the desiccant in the alternate tower at slightly above atmospheric pressure. After a set period, the towers switch roles, ensuring a continuous supply of dry compressed air.
- Compressed air inlet temperature: 2~45℃
- Compressed air pressure: 0.7MPa, Max.1.0MPa (or customizable)
- Pressure dew point: -20℃ (-40℃ customizable)
- Oil content of inlet air: 0.08ppm (0.1mg/m³)
- Solid particle size: ≤60µm
- Average regenerative air flow: 10%~22% of rated air flow
- Adsorbent desiccants: activated alumina (or molecular sieve)
- Pressure drop: ≤0.025MPa (at 0.7MPa inlet pressure)
- Regeneration method: normal temperature
- Working mode: automatic switch between the two towers (4min/10min cycle mode), continuous operation
- Control method: 4~10min cycle adjustable
- Installation: indoor, allowing for installation without foundation
| Model | Max. air flow rate (m³/min) | Power supply | Input power (kW) | Air pipe connection | Total weight (kg) | Dimensions (L×W×H) (mm) |
| | 1.2 | 220V/50Hz | 0.2 | RC1" | 105 | 670×360×1305 |
| | 2.4 | 220V/50Hz | 0.2 | RC1" | 135 | 670×400×1765 |
| | 3.8 | 220V/50Hz | 0.2 | RC1" | 187 | 850×400×1385 |
| | 6.5 | 220V/50Hz | 0.2 | RC1-1/2" | 238 | 1000×600×1700 |
| | 8.5 | 220V/50Hz | 0.2 | RC2" | 282 | 1100×600×2050 |
| | 11.5 | 220V/50Hz | 0.2 | RC2" | 466 | 1200×600×2030 |
| | 13.5 | 220V/50Hz | 0.2 | RC2" | 520 | 1240×600×2280 |
| | 17 | 220V/50Hz | 0.2 | DN65 | 670 | 1300×720×2480 |
| | 23 | 220V/50Hz | 0.2 | DN80 | 798 | 1400×720×2520 |
| | 27 | 220V/50Hz | 0.2 | DN80 | 980 | 1500×800×2450 |
| | 34 | 220V/50Hz | 0.2 | DN80 | 1287 | 1700×770×2420 |
| | 45 | 220V/50Hz | 0.2 | DN100 | 1624 | 1950×860×2600 |
| | 55 | 220V/50Hz | 0.2 | DN100 | 1624 | 2010×860×2670 |
| | 65 | 220V/50Hz | 0.2 | DN125 | 2650 | 2160×1040×2705 |
| | 85 | 220V/50Hz | 0.2 | DN125 | 3520 | 2420×1100×2860 |
| | 110 | 220V/50Hz | 0.2 | DN150 | 4320 | 2500×1650×2800 |
| | 130 | 220V/50Hz | 0.2 | DN150 | 4750 | 2650×1650×2800 |
| | 155 | 220V/50Hz | 0.2 | DN200 | 5260 | 2800×1700×2900 |
| | Technical data available on request | |||||
- Environmentally friendly
Utilizes R134a and R410A refrigerants in compliance with the Montreal Protocol, ensuring zero ozone depletion potential and alignment with global environmental standards.
- Advanced control system
Equipped with a dedicated computer control interface providing intuitive operation monitoring, multiple alarm and protection functions, and DCS remote control capability for seamless integration with industrial automation systems.
- Reliable pneumatic actuators
Fitted with pneumatic angle seat valves and butterfly valves, operated via a deep-dried and filtered pneumatic control system to ensure reliable actuation and eliminate valve leakage.
- Optimized tower design
The height and diameter of the adsorption towers are precisely calculated and validated through testing to ensure optimal flow rates and heat/mass transfer, preventing premature desiccant wear and eliminating tunneling effects.
- Professional programmable control
Minimizes airflow pulsation and pressure fluctuations, effectively reducing dust discharge and regeneration noise at the outlet.
- Flexible operation modes
Features adjustable regeneration air volume and timing programs, offering multiple operation modes such as cycle time optimization and energy-saving settings to meet diverse dew point and operational requirements.
- Stable and practical design
Built with a sturdy and aesthetically pleasing base, facilitating easy installation, operation, and maintenance.
