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DD/DC Series (Standard Pressure Range)
Provide ADP up to -40° to -60°C & max up to (-) 70°C
Range 3.5 CFM to 1200 CFM (6 m3/hr to 2030 m3/hr)Our Airgineers Can Help You Select The Right Product!
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A desiccant dryer is a specialised device used to remove moisture from compressed air or other gases, ensuring the air is dry and suitable for various industrial applications. It operates by passing the moist air through a desiccant material, which adsorbs the water vapour.
Features
- Available in 19 standard models
- Best atmospheric dew point achievable (-) 40°C & max up to (-) 70°C
- Special graded desiccant DelsorbTM 10 and DelsorbTM 21 for optimum performance and long life
- Electronic controls/solid state timers for automatic and reliable operation
- Equipped with a muffler on the purge air outlet to reduce the noise level
Optional Energy Savings Features & Advantages on Request
Optional Features
- Humidity indicator
- Filters and/or total dryer bypass line with valves
- Special Delair Filters for removal of water, oil mists, oil vapour and dust particles with electronically operated drain valves
- Explosion-proof controls for offshore application
- Construction according to various codes
- Delair also manufactures standard high pressure Desiccant Dryers for PET industry/PET blowing applications
Std. Working Parameters
- Working Pressure: 7.0 Bar(g)
- Air inlet temperature: 40°C
- Ambient temperature: 40°C
- Working Pressure range (Min./Max.): 5.0 to 14.0 Bar(g)
Desiccant Dryer is based on the principle of heatless regeneration and the physical properties of desiccant to adsorb and desorb water vapour. It uses the pressure swing principle/purge air to generate the desiccant bed.
The Desiccant Dryer has two pressure vessels/towers filled with desiccant. While the air is dried in one tower/vessel, the desiccant in the other is regenerated, thus maintaining a continuous and automatic operation.
Drying: The wet compressed air is led into one of the adsorber towers through solenoid valves in the smaller models and pneumatically controlled valves in the bigger models. This wet compressed air is passed through a specially designed sieve tube for a uniform flow of air through the desiccant tower, where it is dried. Part of this dried air is taken out and used for purging or reactivating the desiccant of the tower saturated with moisture. The balance dry air leaves the dryer through a check valve.
Regeneration: The purge air with a low water vapour pressure is passed over the desiccant (saturated with adsorbed moisture). The desiccant loses the adsorbed moisture, which is expelled into the atmosphere via an outlet valve through a muffler. Now, the desiccant is dry and ready for adsorption. The heat of adsorption released during this process raises the temperature of the desiccant, which in turn stimulates the liberation of the adsorbed water vapour and, thus, the regeneration.
Change Over: After a preset time, the desiccant in the first tower needs to be regenerated as it is saturated with the adsorbed moisture. The outlet purge air valve of the second tower is energised in a sequence, where the outlet valve closes first to pressurise the adsorbent in the tower in regeneration mode. The second tower becomes the adsorber while the first changes to regeneration mode. The wet compressed air now passes through the freshly regenerated adsorber tower, thus setting up a continuous process.
| MODEL No. | CAPACITY IN M3/HR. PRESSURE IN KG/CM2 (G) |
CONNECTION BSP FEMALE / FLANGE (IN INCHES) |
DIMENSIONS (IN MM) |
WEIGHT (IN KGS) |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | L | W | H | |||
| DD-6 | 4.5 | 5.4 | 6.3 | 7.1 | 8.0 | 8.9 | 9.8 | 10.7 | 11.6 | 12.5 | 1/4″ BSP | 410 | 350 | 690 | 20 |
| DD-12 | 8.9 | 10.7 | 12.5 | 14.3 | 16.1 | 17.9 | 19.6 | 21.4 | 23.2 | 25.0 | 1/4″ BSP | 420 | 350 | 700 | 22 |
| DD-25 | 17.9 | 21.4 | 25.0 | 28.6 | 32.1 | 35.7 | 39.3 | 42.9 | 46.4 | 50.0 | 1/4″ BSP | 455 | 350 | 760 | 29 |
| DD-55 | 38.9 | 46.6 | 54.4 | 62.2 | 70.0 | 77.7 | 85.5 | 93.3 | 101.1 | 108.8 | 1/2″ BSP | 665 | 400 | 1320 | 110 |
| DD-85 | 60.4 | 72.4 | 84.5 | 96.6 | 108.6 | 120.7 | 132.8 | 144.9 | 156.9 | 169.0 | 1/2″ BSP | 690 | 450 | 1440 | 123 |
| DD-110 | 78.2 | 93.9 | 109.5 | 125.1 | 140.8 | 156.4 | 172.1 | 187.7 | 203.4 | 219.0 | 3/4″ FLANGE | 760 | 500 | 1685 | 158 |
| DD-170 | 120.7 | 144.9 | 169.0 | 193.1 | 217.3 | 241.4 | 265.6 | 289.7 | 313.9 | 338.0 | 1″ FLANGE | 945 | 620 | 1555 | 205 |
| DD-255 | 181.1 | 217.3 | 253.5 | 289.7 | 325.9 | 362.1 | 398.4 | 434.6 | 470.8 | 507.0 | 1″ FLANGE | 945 | 620 | 2000 | 250 |
| DD-340 | 241.4 | 289.7 | 338.0 | 386.3 | 434.6 | 482.9 | 531.1 | 579.4 | 627.7 | 676.0 | 1.1/2″ FLANGE | 1055 | 700 | 1940 | 335 |
| DD-425 | 301.8 | 362.1 | 422.5 | 482.9 | 543.2 | 603.6 | 663.9 | 724.3 | 784.6 | 845.0 | 1.1/2″ FLANGE | 1055 | 700 | 2220 | 380 |
| DD-555 | 394.7 | 473.7 | 552.6 | 631.6 | 710.5 | 789.5 | 868.4 | 947.4 | 1026.3 | 1105.3 | 1.1/2″ FLANGE | 1135 | 850 | 2110 | 460 |
| DD-680 | 482.9 | 579.4 | 676.0 | 772.6 | 869.1 | 965.7 | 1062.3 | 1158.9 | 1255.4 | 1352.0 | 2″ FLANGE | 1305 | 950 | 2250 | 645 |
| DD-850 | 603.6 | 724.3 | 845.0 | 965.7 | 1086.4 | 1207.1 | 1327.9 | 1448.6 | 1569.3 | 1690.0 | 2″ FLANGE | 1360 | 1200 | 2230 | 845 |
| DD-1100 | 784.6 | 941.6 | 1098.5 | 1255.4 | 1412.4 | 1569.3 | 1726.2 | 1883.1 | 2040.1 | 2197.0 | 2″ FLANGE | 1410 | 1250 | 2280 | 970 |
| DD-1235 | 877.6 | 1053.1 | 1228.6 | 1404.1 | 1579.7 | 1755.2 | 1930.7 | 2106.2 | 2281.7 | 2457.3 | 2.1/2″ FLANGE | 1660 | 1350 | 2500 | 1130 |
| DD-1400 | 994.7 | 1193.6 | 1392.6 | 1591.5 | 1790.4 | 1989.4 | 2188.3 | 2387.2 | 2586.2 | 2785.1 | 2.1/2″ FLANGE | 1660 | 1350 | 2690 | 1180 |
| DD-1520 | 1086.4 | 1303.7 | 1521.0 | 1738.3 | 1955.6 | 2172.9 | 2390.1 | 2607.4 | 2824.7 | 3042.0 | 2.1/2″ FLANGE | 1705 | 1350 | 2525 | 1270 |
| DD-1700 | 1207.1 | 1448.6 | 1690.0 | 1931.4 | 2172.9 | 2414.3 | 2655.7 | 2897.1 | 3138.6 | 3380.0 | 3″ FLANGE | 1875 | 1550 | 2740 | 1500 |
| DD-2030 | 1448.6 | 1738.3 | 2028.0 | 2317.7 | 2607.4 | 2897.1 | 3186.9 | 3476.6 | 3766.3 | 4056.0 | 3″ FLANGE | 1935 | 1550 | 2690 | 1675 |
Frequently Asked Questions
The Delair FDI Series – Standard Series offers compact, lightweight, and cost-effective solutions, eliminating the need for extensive floor space. With a small footprint, it integrates commercial unit aesthetics with industrial ruggedness. Featuring high-performance desiccant rotors and optional stainless steel construction, it’s versatile, applicable to diverse industries. Its largest capacity range (170 CMH to 4500 CMH) suits pharmaceuticals, food processing, electronics, and more. Simple operation and the patented EcoDry rotor technology ensure efficient moisture control, making it an indispensable, little giant in industrial dehumidification, ideal for various applications worldwide.
The Delair FDI Series – Standard Series offers compact, lightweight, and cost-effective solutions, eliminating the need for extensive floor space. With a small footprint, it integrates commercial unit aesthetics with industrial ruggedness. Featuring high-performance desiccant rotors and optional stainless steel construction, it’s versatile, applicable to diverse industries. Its largest capacity range (170 CMH to 4500 CMH) suits pharmaceuticals, food processing, electronics, and more. Simple operation and the patented EcoDry rotor technology ensure efficient moisture control, making it an indispensable, little giant in industrial dehumidification, ideal for various applications worldwide.
