How do dehumidifier air drying systems work?
How a dual tower desiccant air dryer works
When the compressed air application scenario requires a pressure dew point below 0°, an adsorption dryer comes in handy. A regenerative dehumidifier dryer consists of two pressure vessels. Both vessels are filled with dehumidifier. One of the vessels is responsible for removing moisture from the compressed air.
The moist air passes directly through the dehumidifier bed, which absorbs the moisture. Once the vessel is full, a valve switches to direct the air to the other backup vessel. While the air is being adsorbed and dried in the other vessel, the first vessel is regenerated. This creates a repetitive process.
The dehumidifier medium has a limited ability to absorb moisture before it needs to be dried or regenerated. Therefore, the tower with saturated dehumidifier medium is depressurized to remove the accumulated moisture. The specific method of achieving this depends on the specific type of dryer.
Technical Specification
| Model | Capacity | Connections | Water | Dimension mm | Weight | Recommended | ||||
| m³/min | CFM | Air | Water | Consumption t/h | L | W | H | kg | After-Filter Model | |
| RSXY-60ZP | 6 | 212 | DN50 | 2" | 6.1 | 2000 | 900 | 1900 | 1000 | RSG-AR-0145G/V2 |
| RSXY-80ZP | 8 | 282 | DN50 | 2" | 8.2 | 2000 | 900 | 1900 | 1050 | RSG-AR-0145G/V2 |
| RSXY-100ZP | 10 | 353 | DN50 | 2" | 10.2 | 2066 | 950 | 1916 | 1151 | RSG-AR-0220G/V2 |
| RSXY-120ZP | 12 | 424 | DN50 | 2" | 12.2 | 2066 | 1000 | 2000 | 1250 | RSG-AR-0220G/V2 |
| RSXY-150ZP | 15 | 530 | DN65 | 2" | 15.3 | 2165 | 1000 | 2316 | 1550 | RSG-AR-0330G/V2 |
| RSXY-200ZP | 20 | 706 | DN65 | 2" | 20.4 | 2225 | 1000 | 2567 | 1640 | RSG-AR-0330G/V2 |
| RSXY-220ZP | 22 | 777 | DN65 | 2" | 22.4 | 2325 | 1050 | 2647 | 1900 | RSG-AR-0430G/V2 |
| RSXY-250ZP | 25 | 883 | DN65 | 2" | 25.5 | 2325 | 1050 | 2647 | 1980 | RSG-AR-0430G/V2 |
| RSXY-350ZP | 35 | 1236 | DN80 | 2" | 35.7 | 2452 | 1250 | 2510 | 2470 | RSG-AR-0620G/V2 |
| RSXY-450ZP | 45 | 1589 | DN100 | 3" | 45.9 | 2900 | 1400 | 2690 | 3000 | RSG-AR-0830F/V2 |
| RSXY-600ZP | 60 | 2119 | DN100 | 3" | 61.2 | 3100 | 1650 | 2717 | 3800 | RSG-AR-1000F/V2 |
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Rated Conditions |
Working Range |
Avaliable |
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Working pressure : 0.7MPag / 100psig |
Max.working pressure : 1.0MPag / 145psig |
Higher pressure above 1.0Mpag / 145psig |
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Inlet temp : 160 ℃ / 320 ℉ |
Max.inlet temp : 200℃ / 394 ℉ |
Booster heater |
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Cooling water temp : 32℃ / 90 ℉ |
Max.ambient temperature : 40℃ / 104 ℉ |
Higher capacity |
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Stainless steel vessel or piping |
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GB,ASME,PED,etc. vessels |
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Zero loss drain |
Heatless regenerative dryers rely solely on compressed air to perform the purge operation.
Blower purge dryers use air and heat from an external blower and work in conjunction with a small amount of compressed air.
Blower zero compressed air purge dryers use only air and heat from an external blower and no compressed air at all.
Compression heat dryers use the heat generated during the compression process to achieve the drying purpose.
Heated purge dryers rely on heat and a small amount of compressed air to achieve the drying process.
Desiccant categories
Based on different technical characteristics and dew point standards, there is always a most suitable desiccant to choose from. In some designs, we use a combination of multiple layers of desiccant. This ensures that the expected pressure dew point level can be achieved and the effective service life of the desiccant is extended to the greatest extent.
Risheng's Desiccant Compressed Air Dryer is the key element to achieve stable operation of compressed air in work scenarios with strict humidity requirements. This type of device uses cutting-edge desiccant technology to absorb water vapor and deliver dry compressed air, protecting your machinery from corrosion and avoiding costly operating failures, thereby ensuring consistent quality of production results.
