18Nm3/min Fully Automatic Heatless Regenerative Dryer (Explosion-Proof Option Available) — Specialized Equipment for Purifying and Dehydrating Factory Air Supplies
Product Details
18Nm3/min heatless regenerative dryer
,explosion-proof desiccant air dryer
,factory air supply dehydration equipment
Engineered for the centralized air compressor stations of large modern plants, this AIRERA 18Nm³/min fully automatic heatless regenerative dryer serves as premium core equipment for deep dehumidification. Driven by a microcomputer PLC closed-loop program, it achieves complete automated, unattended continuous operation of dual-tower alternating adsorption, reliably delivering ultra-pure compressed air with a stable pressure dew point of -40°C. Tailored for hazardous production environments such as metallurgy, refining, and major coating centers, this unit offers a comprehensive explosion-proof safety option to thoroughly eliminate electric spark risks. Benefiting from AIRERA’s superior flow-field engineering, the entire system maintains ultra-low energy consumption and minimal pressure drop while completely eradicating pipeline condensation, providing a robust, long-lasting purification barrier for massive automated piping networks.
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Energy-Saving Purge Design
With purge air controlled within only 12-15%, it cuts compressed air waste drastically, bringing remarkable long-term operational savings for Middle East factories.
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Steady Dew Point Performance
Maintains a stable pressure dew point between -20°C to -40°C even under 45°C hot inlet air, fully protecting downstream pneumatic components from moisture damage.
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Wide Working Pressure Adaptability
Adapts seamlessly to 0.6-1.0Mpa working pressure, matching local power supply and pipeline conditions perfectly for hassle-free installation and operation.
| ITEM | UNIT | MODEL HDR-200XF |
|---|---|---|
| Capacity | Nm³/min | 18.0 |
| Motor | Power(kw) | 3.0 |
| Voltage | V | 380 |
| connection |
DN65 |
|
| Dimension | L×W×H in mm | 1400×600×2200 |
| Weight | kg | 780 |
| Purge air | <=12~15% | |
| Working pressure | Mpa | 0.6~1.0 |
| Inlet oil content | ppm | <=0.01 |
| Pressure dew point | ℃ | -20℃~-40℃ |
| Desiccant | Activated aluminum or Molecular siere | |
| Working periods | T=4~20Minutes | |
| Inlet temperature | 0℃~45℃ |
As a massive 18Nm³/min heavy-duty dryer, how does it handle the mechanical stress from pipeline vibration and cyclic pressure variations when connected to the factory's main air distribution header?
A massive 18Nm³/min piping network holds immense kinetic energy, where pipeline stress and subtle vibrations can easily lead to weld cracking in traditional equipment. AIRERA incorporates a heavy-duty reinforced anti-torsion rigid base at the junction of the base and tower frame, delivering exceptional shock-absorption capacity. Furthermore, the welding between the manifold piping and the tower bodies undergoes strict stress-relief heat treatment, with optional flexible stainless steel corrugated expansion joints available. This effectively absorbs external alternating mechanical stresses, ensuring the entire structural framework remains robust and zero-leakage under the long-term, high-frequency vibrations of a centralized air station.
In an explosion-proof environment, how do the frequently switching, ultra-large diameter control valves ensure they do not produce dangerous sparks or thermal accumulation from mechanical friction and impact?
For the 18Nm³/min model configured for hazardous areas, AIRERA utilizes specialized pneumatic non-metallic soft-seated valve assemblies coated with a high-performance, low-friction, anti-static specialized layer. During frequent alternating switching sequences, the valve core makes cushioned, shock-absorbing contact with the seat, completely eliminating the possibility of mechanical sparks caused by direct metal-to-metal friction or hard impacts. Additionally, the pneumatic actuators are driven entirely by compressed air rather than direct electromagnetic force, eliminating the thermal dissipation issues of large-current coils and ensuring the temperature rise of the valve assemblies stays well below safety thresholds during continuous operation.
When a massive volume of 18Nm³/min air undergoes instantaneous depressurization exhaust, traditional mufflers are highly prone to clogging or even bursting. How does AIRERA resolve the noise attenuation and back-pressure safety challenges for such high-flow discharge?
When the 18Nm³/min adsorption towers switch, the energy released from the instantaneous compressed air decompression is exceptionally high. To manage this, AIRERA configures a proprietary multi-stage expansion combined impedance muffler. Inside the muffler, flush-resistant stainless steel porous diffusion pipes and split-flow chambers rapidly disperse and depressurize the incoming high-pressure, high-velocity airflow step by step. This not only keeps harsh, high-frequency exhaust noise well within national industrial safety standards but also provides an ultra-wide internal relief channel. Its specialized anti-clogging, flame-retardant material effectively prevents back-pressure buildup from trace desiccant dust accumulation, completely eradicating the risk of muffler bursting or desiccant blowback.
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