Nitrogen penetration can meet the requirements of general compressed air. The pressure of nitrogen turbine compressor is high, and the gear type is more energy-saving. According to the discharge pressure, there are single cylinder (low pressure) and double cylinder (high pressure cylinder and low pressure cylinder) (8-stage compression to 30bar), generally below 30barg, 5barG sealing gas is required (pressure nitrogen can meet the requirements).

In the equipment of oxygen production based on the principle of low-temperature distillation, in order to ensure the normal rectification and separation of air in the low-temperature area, the air must be pretreated in the normal temperature area, such as filtration, precooling and purification. The air contains a lot of dust. During the long-term high-speed operation of the air turbine compressor (hereinafter referred to as the air compressor)