| abstract |
A cryogenic distillation air separation plant comprises a compressor (100), an exchange line (4), a column system (1), an electric motor (M) for driving the compressor, a pipe for withdrawing a column system liquid, a pump (6) for pressurizing the withdrawn liquid and means for allowing heat exchange between compressed air by the compressor and the pressurized liquid (16) by the pump and means for lowering the pressure. output pressure of the pump according to the frequency of the electricity supplying the electric motor. |