Working Principle
The working principle of a heated desiccant air dryer is based on adsorption. The dryer contains two desiccant towers filled with a moisture-absorbing material, usually activated alumina, silica gel, or molecular sieve. Compressed air enters one of the towers, where the desiccant adsorbs the moisture from the air, allowing dry air to exit the system. While one tower is actively drying the air, the other undergoes regeneration to release the moisture it absorbed. The key differentiator of a heated desiccant dryer is the use of heat during the regeneration process.
In most heated dryers, external heaters are used to raise the temperature of the purge air or the desiccant material itself. This elevated temperature helps in removing the moisture more effectively, reducing the amount of purge air required compared to non-heated systems. The regeneration process may involve internal or external heating, depending on the dryer type, and once completed, the tower switches roles, ensuring a continuous supply of dry air.
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 |
|
Rated Conditions |
Working Range |
Avaliable |
 |
|
Working pressure : 0.7MPag / 100psig |
Max.working pressure : 1.0MPag / 145psig |
Higher pressure above 1.0Mpag / 145psig |
|
|
Inlet temp : 160 ℃ / 320 ℉ |
Max.inlet temp : 200℃ / 394 ℉ |
Booster heater |
|
|
Cooling water temp : 32℃ / 90 ℉ |
Max.ambient temperature : 40℃ / 104 ℉ |
Higher capacity |
|
|
Stainless steel vessel or piping |
|||
|
GB,ASME,PED,etc. vessels |
|||
|
Zero loss drain |
Correction Factors
Actual Capacity (m³/min) = Nominal Capacity × KA × KB
| Working Pressure (KA) | Mpag | 0.5 | 0.6 | 0.7 | 0.8 | 0.9 | 1 |
| psig | 73 | 87 | 100 | 116 | 131 | 145 | |
| CFP | 0.75 | 0.87 | 1 | 1.13 | 1.25 | 1.37 |
| Cooling Water Temperature (KB) | ℃ | 25 | 30 | 32 | 35 |
| ℉ | 77 | 86 | 90 | 95 | |
| CFT | 1.33 | 1.11 | 1 | 0.85 |
FAQ
1.Why is air purity critical in the pharmaceutical industry, and how does a heated desiccant air dryer help?
In the pharmaceutical industry, maintaining air purity is crucial to prevent contamination during medicine production and packaging. They ensure the compressed air used is completely free of moisture and contaminants, meeting strict hygiene standards and safeguarding product quality.
2.How do they benefit food and beverage processing plants?
They are vital in food and beverage processing by providing dry, contaminant-free air. This dry air prevents spoilage, maintains hygiene, and enhances the shelf life of products during processes like packaging, mixing, and conveying.
3.What role do they play in automotive paint applications?
In automotive manufacturing, dry compressed air is essential to avoid defects like moisture blisters in paint coatings. Heated desiccant air dryers provide the low dew points needed for a smooth, high-quality finish, improving the overall product quality in paint and coating applications.
4.Why are heated desiccant air dryers essential in electronics manufacturing?
Electronics manufacturing requires clean, dry air to protect sensitive components from moisture damage. They maintain the necessary low dew points, ensuring moisture control that safeguards electronics during critical assembly and testing processes.
5.How do they enhance safety in the petrochemical and oil & gas industries?
In petrochemical and oil & gas sectors, moisture in compressed air can cause corrosion, freezing, or safety hazards.They efficiently remove moisture, improving system reliability and maintaining safety in extreme operating conditions.
6.What advantages do desiccant air dryers offer to food and pharmaceutical production?
They provide ultra-dry air with low dew points, preventing contamination in food and pharmaceutical production. This ensures compliance with hygiene regulations, enhances product quality, and extends product shelf life, making it ideal for sensitive environments.
7.How does moisture removal by desiccant air dryers benefit various industries?
They are used across industries like pharmaceuticals, food & beverage, automotive, electronics, and petrochemical due to their ability to remove moisture efficiently. By delivering dry, contaminant-free air, they ensure optimal product quality and system performance in diverse applications.
