Advantages
Superior Moisture Removal
Molecular sieve air dryers are exceptionally efficient in eliminating moisture from compressed air. They can trap even the minutest amounts of water vapor, attaining extremely low dew points. This makes them indispensable for industries like the semiconductor manufacturing, precision instrument production, and chemical processing. In semiconductor manufacturing, ultra - dry air is crucial to prevent moisture - related defects in microchips.
Energy Savings
These dryers utilize a unique energy - efficient regeneration process. By leveraging external heat sources, they reduce the reliance on large volumes of compressed air for desiccant regeneration. For facilities with high - volume air consumption, such as large - scale manufacturing plants, this results in substantial energy cost savings. The optimized energy use also aligns with modern environmental and cost - control objectives.
Extended Desiccant Life
The application of heat during the desiccant regeneration phase of molecular sieve air dryers minimizes the physical and chemical stress on the desiccant material. Unlike some alternative drying systems that solely use air purging for regeneration, the molecular sieve in these dryers experiences less wear and tear. This leads to a significantly longer desiccant lifespan, reducing the frequency and cost of desiccant replacement.
Reduced Purge Air Loss
Compared to other types of air dryers, molecular sieve air dryers require much less purge air. This is because the heat - assisted regeneration process is more effective at reactivating the desiccant. As a result, a greater proportion of the compressed air can be directed towards productive operations. In a production line, this means more air is available for powering pneumatic tools and equipment, enhancing the overall efficiency of the production system.
Consistent Air Quality
Molecular sieve air dryers offer a continuous and reliable supply of dry air. They are designed to maintain a stable dew point over time, ensuring that the quality of the compressed air remains consistent. This is vital for sensitive applications where even minor fluctuations in air quality can lead to product quality issues or equipment malfunctions, such as in the production of high - end medical devices.
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 |
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
Q: How does a molecular sieve air dryer work?
A: Molecular sieve air dryers use the selective adsorption characteristics of molecular sieves (such as 4A or 5A types) to preferentially adsorb water molecules in compressed air through their uniform microporous structure. For example, a 4A molecular sieve has a pore size of 4A, which can adsorb water molecules (about 3A in diameter) while excluding most other gas molecules. The adsorption process is usually carried out under high pressure, and after adsorption saturation, regeneration is achieved by reducing pressure or heating (such as temperature swing adsorption TSA or pressure swing adsorption PSA).
Q: What are the advantages of molecular sieve air dryers compared to other drying technologies?
A: Efficient dehydration: The adsorption capacity of molecular sieves for water is significantly higher than that of activated alumina or silica gel, especially in low humidity environments.
High temperature and high pressure resistance: Molecular sieves maintain structural stability in high temperature (such as automotive braking systems) and high pressure cycles, and are suitable for harsh industrial environments.
Long life: High mechanical strength (such as Siliporite® molecular sieves) can reduce breakage losses and extend replacement cycles.
Q: What are the typical application scenarios of molecular sieve air dryers?
A: Automobile braking system: used for compressed air drying of trucks and buses to prevent pipe freezing and metal corrosion.
Industrial compressed air treatment: provide oil-free and water-free air in electronic manufacturing, food processing and other fields.
Gas separation: used in nitrogen generators or oxygen generators in conjunction with carbon molecular sieves to improve gas purity.
Q: What are the common causes of molecular sieve adsorbent failure and regeneration methods?
A: Failure causes: oil pollution, dust blockage, high temperature leading to structural collapse, etc.
Regeneration method:
Thermal regeneration: heating to 200~350℃ and passing dry gas to desorb moisture.
Pressure regeneration: release adsorbed moisture by reducing pressure (PSA process).
Q: How to maintain molecular sieve air dryers to extend their service life?
A: Pre-filtration: install oil-water separators and particulate filters to prevent oil and dust from contaminating the molecular sieve.
Regular inspection: monitor the outlet air dew point and replace the molecular sieve in time when the adsorption performance decreases.
Avoid overload: Control the intake air humidity and flow rate to avoid exceeding the designed adsorption capacity.
