Function
20
HDK-CNG_EN_03_2016
Rear view
Connection
Safety relief valve
Pressure regulator
with pressure gauge
Heater
earth/ground rails
Pressure relief valve
Natural gas outlet
Connection Safety
relief valve
Rear view
Function
The dryer dries the natural gas supplied by the compressor and makes it
available for industrial use. Because this is a sealed system, a partial flow
(regeneration gas) is directed back to the compressor inlet.
Installed upstream and downstream filters purify the natural gas directed into the
dryer and/or directed onwards from dryer to consumers.
The two vessels contain an extremely porous drying agent by means of which
humidity is removed from the natural gas and stored just as in a sponge.
To this end, the two vessels alternate between different operating modes. Whilst
in one vessel, natural gas is de-humidified (adsorption), in the other vessel the
humid drying agent is prepared for another charge (regeneration).
These two concurrent states in natural gas treatment are described below.
