Lingyu’s advanced desiccant air dryers are engineered to provide robust equipment protection and peak performance. By removing all traces of moisture, our desiccant dryers ensure your compressed air system operates smoothly, reducing downtime and boosting productivity.
Our industrial desiccant air dryers deliver ultra-low dew points (-40°C to -70°C / -40°F to -94°F), making them ideal for moisture-sensitive processes in pharmaceuticals, electronics, food & beverage, petrochemicals, and other demanding industries.
Explore our full range of desiccant air dryers below and request a quote to select the ideal solution for your compressed air system.
The communication can meet the user's requirements such as RS-485 (standard), IoT connection, etc.
The independently developed EBZ200-2 multi-core driver can save more than 10% of the comprehensive energy consumption compared with the fixed cycle mode;
The optional dew point energy-saving control can extend the adsorption time and reduce the comprehensive energy consumption by more than 30% under load fluctuation conditions;
Customized high-performance adsorbent, 20% filling margin;
304 stainless steel control gas pipeline, specially designed diverter, high adsorbent utilization rate, small gas pressure loss;
7-inch Siemens touch screen programmable controller, dynamic monitoring of operation process；
Energy Efficient:Low regeneration air consumption of only 5–8%.
Stable Performance:High-quality desiccant is carefully selected to ensure reliable performance and a stable pressure dew point.
Cost-Effective:A full-capacity standby unit can be configured at relatively low cost, while maintenance and servicing costs remain low.
Clean Air & Long Service Life:All surfaces in contact with compressed air are treated with an anti-corrosion oxidation process, effectively preventing secondary contamination of the treated air. This makes the unit particularly suitable for food and pharmaceutical applications, with a service life of up to 30 years.
No Annual Pressure Vessel Inspection Required:The unit is not classified as a pressure vessel subject to mandatory special-equipment inspection and therefore does not require annual pressure vessel reinspection.*
Compact Modular Construction:The integrated structure is manufactured from aerospace-grade magnesium-aluminum extruded alloy, providing a compact and robust design. The unit can pass through standard doorways, making it suitable for installation in a wide variety of locations.
Lingyu provides industrial desiccant air dryers, also known as adsorption air dryers, for compressed air systems requiring low pressure dew points and reliable moisture removal.
Desiccant and adsorption describe the same drying principle: water vapor is adsorbed onto a desiccant material such as activated alumina or molecular sieve, while the desiccant is periodically regenerated for continuous operation.
Lingyu desiccant air dryer technologies include:
These configurations are designed for different airflow capacities, pressure dew points, purge-air requirements, energy costs, and industrial operating conditions.
Most industrial desiccant dryers use two adsorption vessels or multiple adsorption modules.
During the adsorption cycle, compressed air passes through the desiccant bed, where water vapor is removed.
During regeneration, moisture is released from the saturated desiccant using dry purge air, external heat, blower-heated air, or recovered compression heat depending on the dryer technology.
The system automatically switches between drying and regeneration to maintain continuous dry compressed air delivery.
Heatless dryers regenerate the desiccant using dry compressed purge air and require no external heater.
Lingyu CH / HH heatless series provide:
Heatless dryers are typically selected when simple operation, lower initial investment, and low electrical regeneration demand are priorities.
heated regeneration dryers use an electric heater together with a reduced amount of purge air to regenerate the desiccant.
Compared with heatless dryers, Lingyu externally heated CH / HH configurations reduce average purge air consumption to approximately 4–8%.
They are generally suitable for medium and large compressed air systems where reducing compressed air loss can offset the added heater energy.
Blower-heated dryers use ambient air supplied by a blower and heated for desiccant regeneration.
Lingyu offers:
Standard capacities extend up to approximately 260 m³/min, with -20°C / -40°C PDP options depending on configuration.
Blower-heated dryers are typically considered for large, continuously operating systems where purge-air cost is significant.
Heat of Compression dryers(HOC) recover high-temperature compressor discharge heat for desiccant regeneration.
Lingyu provides:
HOC dryers are best suited for large compressed air systems where sufficient and stable compression heat is available.
Lingyu M Series modular dryers use multiple adsorption modules instead of conventional large twin towers.
The standard M Series provides:
The modular architecture is particularly suitable where compact installation, future expansion, maintenance flexibility, or N+1 redundancy is required.
| Technology | Capacity Range* | Purge Air | PDP | Main Regeneration Energy | Best Suited For |
|---|---|---|---|---|---|
| Heatless | Up to 150 m³/min | 8–14% | -50°C to -20°C / ≤-40°C | Compressed purge air | Simple small–medium systems |
| Externally Heated | Up to 150 m³/min | 4–8% | -50°C to -20°C / ≤-40°C | Heater + reduced purge | Medium–large systems |
| Blower Heated | Up to 260 m³/min | 0–3% | -20°C / -40°C | Blower + heater | Large continuous systems |
| Heat of Compression | Up to 260 m³/min | 0–3% | -20°C / -40°C | Compressor discharge heat | Large systems with usable compression heat |
| Modular Heatless | 1.5–55 m³/min | 5–8% | ≤-20°C / ≤-40°C optional | Compressed purge air | Compact / expandable / redundant systems |
*Based on the Lingyu series technical data provided. Exact capacity depends on the selected series and operating conditions.
Regeneration method has a major impact on desiccant dryer operating cost.
For a system processing 100 m³/min, the approximate regeneration compressed-air demand would be:
| Dryer Type | Purge / Regeneration Air | Approx. Air Used at 100 m³/min |
| Heatless | 8–14% | 8–14 m³/min |
| Externally Heated | 4–8% | 4–8 m³/min |
| Blower Heated Low-Purge | 2–3% | 2–3 m³/min |
| Blower Heated Zero-Purge | ≈0% | ≈0 m³/min |
| HOC Low-Purge | ≤3% | ≤3 m³/min |
| HOC Zero-Purge | 0% | 0 m³/min |
| Modular Heatless | 5–8% | 5–8 m³/min |
Lower purge air does not automatically mean lower total energy consumption.
Heated and blower technologies consume electrical energy, while HOC performance depends on available compressor discharge heat. Dryer selection should therefore consider purge loss, heater/blower power, compressor efficiency, annual operating hours, and maintenance together.
| Selection Requirement | What to Check |
| Required pressure dew point | -20°C / -40°C or other project requirement |
| Airflow | CFM / SCFM / m³/min |
| Working pressure | Typically 0.6–1.0 MPa for standard series |
| Inlet temperature | Depends on regeneration technology |
| Purge-air cost | Important for continuous operation |
| Annual operating hours | Higher hours increase TCO impact |
| Compressor type | Critical for HOC dryers |
| Compressor discharge temperature | Critical for HOC regeneration |
| Cooling water | Required for some blower/HOC configurations |
| Installation space | Important for modular systems |
| Redundancy requirement | Consider modular N+1 configuration |
| Power supply | Heater / blower requirements where applicable |
| Operating Requirement | Recommended Technology |
| Simple low-PDP system | Heatless |
| Reduce purge loss vs heatless | Externally Heated |
| Large continuous system with low purge priority | Blower Heated |
| Zero-purge requirement | HRB-Z or HOC-Z, subject to system conditions |
| High-temperature compressor discharge heat available | Heat of Compression |
| Compact or expandable installation | Modular Heatless |
| N+1 redundancy required | Modular configuration |
| ≤-40°C PDP required | Select suitable HH / blower / HOC / modular option according to series |
Desiccant air dryers are commonly used in applications where refrigerated drying does not provide sufficiently low pressure dew point, including:
Requirement: Low pressure dew point and continuous dry compressed air
Typical Selection: Heatless, externally heated, blower-heated, or HOC depending on airflow and operating hours
For smaller or simpler systems, heatless regeneration may be suitable. For larger continuously operating systems, purge-air and regeneration-energy costs should be compared before selection.
Requirement: High airflow with reduced compressed-air loss
Typical Selection: Blower-heated or Heat of Compression
Where compressor discharge heat is available, HOC technology can recover this energy for regeneration. Where compressor conditions are unsuitable for HOC, blower-heated regeneration may provide a more flexible alternative.
Requirement: Compact installation, future expansion, or standby capacity
Typical Selection: Modular Heatless
M Series modular dryers can be configured according to current capacity and future expansion requirements, including N+1 redundancy where the complete system is designed accordingly.
Desiccant air dryers are commonly used where low pressure dew points are required. The achievable dew point depends on dryer design, desiccant type, regeneration method, airflow, and operating conditions. Refer to the specifications of each Lingyu model for rated performance.
A desiccant air dryer is generally selected when the application requires significantly drier compressed air than a refrigerated dryer can provide, or when downstream piping may be exposed to low ambient temperatures.
Heatless dryers regenerate the desiccant using dried compressed air, while heated dryers use external heat to reduce purge air consumption. Heated designs are often considered for larger systems where reducing compressed air loss is important.
A blower purge dryer uses ambient air supplied by a blower and heated for desiccant regeneration. This reduces dependence on dried compressed air during regeneration.
Dryer sizing should be based on actual airflow, working pressure, inlet temperature, required pressure dew point, and regeneration method. Correction factors may be required when actual conditions differ from rated conditions.
Send us your:Airflow · Working Pressure · Inlet Temperature · Ambient Temperature · Required Dew Point · Regeneration Preference · Voltage/Frequency
Our engineers will recommend a suitable desiccant air dryer type and capacity for your compressed air system.
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