COMPRESSED AIR
SOLUTIONS

Sullair Air Compressors
Compressed Air Dryers
  - Refrigerated type Compressed Air Dryer
  - Heatless type Dessicant Dryers
  - Other Dryers
  - Spares
Compressed Air Accessories
  - After Coolers
  - Air Receiver
  - Air Filters
  - Turnkey Compressor House Packages
Water Chilling Plants

POWER PLANT
SOLUTIONS & SERVICES

A giant set-up needs strict quality control procedures A hassle free performance prolongs the life of the products we provide.

OVERSEAS
PROJECTS

Featuring the execution of successfully completed overseas projects. Take a look...

Home » Compressed Air Solutions » Compressed Air Dryers » Heatless type Dessicant Dryers

Heatless type Dessicant Dryers

For applications requiring much lower dew points than +2°C, dessicant based compressed air dryers are preferred. The compressed Air gets dried by passing through a packed bed of dessicant, which adsorbs water vapours. After a fixed time, the compressed air stream is directed through another packed bed of dessicant while dessicant in first bed is regenerated. The drying and regeneration continues in cyclic manner. There are various methods of regeneration leading to various designs in dessicant dryers. Dew points as low as these dryers can achieve -40°C to -80°C. Directed through another packed bed of dessicant while dessicant in first bed is regenerated. The drying and regeneration continues in cyclic manner. There are various methods of regeneration leading to various designs in dessicant dryers. Dew points as low as these dryers can achieve -40°C to -80°C.

Regeneration in these dryers is carried out be expanding a portion of dry air to near atmospheric pressure and purging the other dessicant bed. The moisture is removed and dessicant regenerated. It is now ready for drying of air once again. Purge air loss is main disadvantage in these dryers.

Salient Features:

Tower optimally packed to avoid dessicant bed movement and attrition losses.
Inlet & outlet Air diffusers to prevent channeling.
Dew point obtained as low as -40°C.

Model Chart:

Model	Rated flow capacity Nm3/hr (cfm) (1)	Maximum working Pressure (Kg/cm2g) (2)	Inlet / Outlet Connections (3) (4)	Dimensions (mm)			Weight (Kg)
Model	Rated flow capacity Nm3/hr (cfm) (1)	Maximum working Pressure (Kg/cm2g) (2)	Inlet / Outlet Connections (3) (4)	Length	Width	Height	Weight (Kg)
SDI-015	25(15)	12	1/2" Flanged	525	400	750	80
SDI-025	42(25)	12	1/2" Flanged	550	450	1000	165
SDI-040	68(40)	12	1/2" Flanged	650	500	1000	210
SDI-060	102(60)	12	1/2" Flanged	700	500	1000	250
SDI-100	170(100)	12	1" Flanged	900	600	1250	445
SDI-150	255(150)	12	1 1/2" Flanged	1000	650	1400	510
SDI-200	340(200)	12	2" Flanged	1100	800	1600	550
SDI-300	510(300)	12	2" Flanged	1200	900	1600	700

Rated flow capacity is for a 5+5 minute cycle dryer having -40°C dew point operating at 7 kg/cm²g. For any change in pressure & dew point, ask for our sizing chart for heatless dryers or consult our application engineers.
Dryers with higher maximum working pressure are available on request.
For any different end connections, please specify. Flanged connections shall be as per ANSI 150#RF.
Models specified above are floor mounted. Wall mounted models are available upto 42 Nm³/hr(25 cfm).
Heatless dryers with rated capacities above 510 Nm³/hr (300 cfm) are available on request.

Model Designation