What impurities are in the air? Why do you need to clear it?

The air contains a small amount of water vapor, carbon dioxide, acetylene, hydrocarbon and a little dust and other impurities. It will be very dangerous to let these impurities enter the air separation unit. Solid impurities will wear the device, especially threatening the safe operation of high-speed rotating equipment. Bringing them into the heat exchanger will also pollute the surface of heat transfer, reduce heat exchange effect; water vapor and CO₂It will freeze and precipitate in succession under the condition of low temperature, so as to block the gas Channel and the sieve hole of the tower plate; the overaccumulation of acetylene and hydrocarbon tables in the distillation column is easy to cause explosion. Therefore, in order to improve the safety, reliability and economy of the unit operation, the air must be purified.