Lingyu - Model DH Series -Combined Industrial Compressed Air Dryer

Why choose our combination refrigerant & desiccant air dryer for compressor

1. Our combined dryers serve customers together with famous air compressor brands. For example, our 6.5m³/min combination dryer is working with Kobelco oil-free air compressor as above picture. Moreover, our other compressed air dryer desiccant often work with Atlas Copco, Ingersoll Rand, Sullair, Kaeser, Hitachi, etc.
2. Refrigerated dryer uses famous brand refrigerant compressors. For instance, we use Hanbell, Danfoss, Copeland and Panasonic brands. Therefore, the cooling capacity is super strong. Besides, there is built-in safety protection. So it has stable performance and high efficiency.
3. Refrigerant dryer is with precooler and heat exchanger. Therefore, it can reduce the load of refrigerant compressor. So compressed air dryer system can adapt to severe working conditions. The maximum inlet temperature can withstand 80 ?.
4. Our desiccant air dryer for compressor adopts high-performance adsorbent. And the pneumatic control valve is also imported brand. So it has reliable performance and long lifetime. Moreover, there is an airflow diffuser at the bottom of adsorption dryer. Therefore, it ensures the long-time contact between compressed air and desiccant beads. Then dew point can be guaranteed.
5. In addition, we use high-quality filters. The filter element adopts USA HV filter paper. The housing is cast aluminum. The maximum pressure can reach 16bar. The temperature of the filter is 80°C. The lifetime of filter element is generally 8000 hours. Shell life can be up to 10 years.

Energy saving

There is no air loss for refrigerated dryer. However, the air consumption of heatless dryer is generally 13%. And micro-heated dryer also has about 6% air loss.

But combination dryer has lower air consumption. For example, heatless combination type is 4~6%. And micro-heated combination type is 3~5%. So it is more energy efficient.

More stable and lower dew point

Combination dryer is ideal for obtaining low dew points. Air compressor produces high-temperature, high-humidity compressed air. Firstly, refrigerant dryer cools them to about 2~10°C.

At this time, it has discharge most gaseous water. What’s left is compressed air with very low moisture content. So the working load of compressed air dryer desiccant is very low. Thus we can achieve -70? dew point easily. Also, the dew point is more stable.

Reduce the floor space

Refrigeration dryer and desiccant air dryer for compressor are on the same base. So it reduces the floor space.

Easy to install

Filters and piping are already installed on compressed air dryer system. Therefore, it reduces installation process of the user.

It is a combination of refrigeration dryer + compressed air dryer desiccant. Preliminary drying in a refrigerated dryer. It removes a lot of moisture. Thereby, the workload of the adsorption dryer is greatly reduced.

In addition, only a small amount of water remains. They are dried by regenerative desiccant air dryer. As a result, we get low dew point dry air.

The adsorption dryer has a lighter workload. Therefore, the required regeneration air will be greatly reduced. It makes compressed air dryer system more energy efficient.

Specific process flow of combination air dryer:

Firstly, the compressed air enters the precooler. They exchange heat with dry compressed air from desiccant dryer. So it will increase their temperature. At the same time, the temperature of the compressed air entering the evaporator is reduced. Fianlly, it removes some water. Also cool them down to room temperature. The workload of the evaporator is also reduced.

Then enter the evaporator for heat exchange. Cool the compressed air. So it achieve the dew point temperature of around 5°C. At this time, it has completed preliminary dehumidification. Then they enter the desiccant air dryer for compressor.

The adsorption dryer adopts the PSA principle. It can get a lower dew point. Dry air comes out of the adsorption tower. Then they return to the precooler in refrigerant dryer. They will cool hot and humid air. Besides, also will raise their own temperature. So it is also beneficial to the regeneration air.

• Suitable Medium: Compressed air/nitrogen
• Cooling Mode of Refrigerant Dryer: Air-cooled
• Regeneration Type of Desiccant
• Air Dryer for Compressor: Heatless regeneration & micro-heated regeneration
• Average Consumption of Regeneration Air: 4~6 % for heatless dryer, 3~5% for micro-heated desiccant dryer
• Inlet Air Pressure: Std.7 bar   | Min 5 bar  Max:10 bar (high pressure customizable)
• Air Inlet Temperature: Std.50 ?   | Max:80?
• Ambient Temperature: Std.32 ?   |Min 2?  Max:45?
• Pressure Loss: ≤0.61 bar
• Available Pressure Dew Point: (-20?, -40?, -70?)
• Outlet Air Oil Content: ≤0.01 PPM
• Desiccant Beads: High efficiency activated alumina + molecular sieve (3~5mm)
• Compressed Air Filter: Pre-filter, dust-removal filter,oil-removal filter, activated carbon filter
• Working Principle: Pre-cooling + low temperature condensation + efficient water
• separation + heat recovery + precision oil-removal + deep adsorption