Patent ID: 8597409

Claim:
A compressor installation comprising: a compressor and a dryer which are mutually connected by a pressure pipe arranged to carry hot compressed gas discharged from the compressor; a cooler and a water separator located successively in said pressure pipe relative to the direction of flow of compressed gas discharged from the compressor; said dryer comprising a housing having a drying zone and a regeneration zone therein; a drum which is rotatable in said housing and having a regenerable drying agent therein; a driver arranged to rotate the drum so that the drying agent is moved successively through the drying zone and the regeneration zone; said regeneration zone comprising at least two subzones, including a first subzone and a second subzone, respectively; at least two regeneration conduits connected to said pressure pipe, upstream of said cooler, for branching off at least two flow portions of hot, compressed gas discharged from the compressor, respectively; a first regeneration conduit connected to an inlet of the first subzone and through which a first flow portion of compressed gas having a first temperature is guided; a second regeneration conduit which is connected to an inlet of the second subzone; and said second regeneration conduit having a heating element arranged to heat the second flow portion of compressed gas which flows through said second regeneration conduit, to a second temperature which is higher than said first temperature.