Device for the exploitation of waste heat from compressors

The device has an intercooler (3) with heat exchanger surface (6) arranged between a pair of compressors (1,2). An aftercooler (5) with heat exchanger surface (7) is arranged after the other compressor (2). The heat-exchanger surfaces are integrated in a steam generator (9) in such-a-way that the surfaces are connected with a feed water pump (40) of the steam generator. An independent claim is also included for gas compression and waste-heat utilization system.