FIELD: cooling of compressor units.
SUBSTANCE: compressor unit is equipped with a liquid injection compressor device (2) with a liquid injection compressor element (3), an outlet pipe (5) connected to the outlet (6) of the compressor element, at the same time a liquid separator (8) is installed on the outlet pipe (5), which contains an inlet (9a) and an outlet (9b) of the compressed gas and an outlet (10) of the separated liquid. The plant is also equipped with a dryer (12) connected to said outlet pipe (5), which uses a dryer (14) to dry the compressed gas coming from the compressor device (2). The dryer (12) is provided with a drying section (13b) and a regeneration section (13a) with an inlet (19a) and an outlet (19b) for regeneration gas. The regeneration pipe (20) is connected to the inlet (19a) of the regeneration section (13a). On said regeneration pipe (20) a heat exchanger (21) is provided for heating the regeneration gas, with a primary section (22a) through which the regeneration gas is directed. The secondary section (22b) of said heat exchanger (21) is installed in the compressor device (2). The compressor unit (1) is additionally provided with a means (23) for controlling the amount of liquid injected into the compressor element (3). The compressor unit (1) is equipped with a control unit (25) for controlling said means (23), while the control unit (25) controls the amount of injected liquid by regularly reducing the liquid injection for a given period.
EFFECT: efficient drying and cooling of the gas.
37 cl, 8 dwg
