... application of complete low-pressure flow arrives at a nitrogen purity of 99.9999% above without the oxygen content ... operating cost.N2, O2 Plant / N2, O2 Generator / Air separation plantDesign and manufacture experience for more than 20 sets of ... rectification, and distributed control system (DCS), completely low-pressure and energy-saving. Air Separation Unit, 100 Nm3 Oxygen, 250 Nm3 Nitrogen