A Heat of compression dryer is basically a regenerative desiccant based air dryer, which uses the heat generated during compression as its energy source for regenerating the saturated desiccant.  It is a very reliable source of consistent large scale industrial dry air. The desiccant, is a highly porous material which adsorbs water molecules from the surrounding air. Some of the dry air is diverted to regenerate the media in the second tower

A HOC dryer is preferred because of its low electrical installation cost along with low power costs. The pressure drop of the system is very low, which also helps reduce its energy requirement. The dryer also uses recovered heat from the compressor to save on energy costs.

product-hoc-dryer

Heatless Dryer

A heatless dryer works on the same principal as a standard desiccant based dryer, however no internal or external heaters are used. Instead of heating the air to dry the desiccant, more amount of air is purged into the tower. AtmosPower’s heatless dryers can achieve dew points of -40°F down to -100°F

Internal Heated dryers

Heat reactivated regenerative desiccant dryers may have internal heat applied by heaters. In the internal type, steam or electricity may be used in heaters embedded in the desiccant bed. This reduces the amount of purge air required for regeneration to less than 10%. The purge air plus normal radiation is used to cool the desiccant bed after regeneration to prevent elevated air temperatures going downstream.

AtmosPower HOC Dryer – Key Features

Inlet Air Temperature40°C to140°C
Operating Pressure5 to 10 Bar
Flow Rate (Capacity)1,000-10,000 Nm3/Hour
Dew Point Temperature-40°C
Pressure Drop0.25 to 0.5 Bar

Heatless Air Dryer – Key Features

Inlet Air Temperature35 to 40°C Degrees Celsius
Operating Pressure7 – 150 Bar
Flow Rate (Capacity)40 – 10,000 Nm3/Hour
Dew Point Temperature(-)40°C(As low as -70°C possible on request)
Pressure Drop0.25 to 0.5 Bar

Split flow type – Key Features

Inlet Air TemperatureUp to 140°C Degrees Celsius
Operating Pressure7 – 10 Bar
Flow Rate (Capacity)1,000– 10,000 Nm3/Hour
Dew Point Temperature(-)40°C(As low as -70°C possible on request)
Pressure Drop0.25 to 0.5 Bar

Low Pressure Dryer – Key Features

Inlet Air TemperatureUp to 120°C Degrees Celsius
Operating PressureUp to 1 Bar
Flow Rate (Capacity)1,000– 20,000 Nm3/Hour
Dew Point Temperature(-)70°C
Pressure Drop0.05 Bar

Internal Heated dryers – Key Features

Inlet Air TemperatureUp to 120°C Degrees Celsius
Operating Pressure7-150 Bar
Flow Rate (Capacity)40 – 10,000 Nm3/Hour
Dew Point Temperature-40°C (As low as -70°C possible on request)
Pressure Drop0.25 to 0.5 Bar