Air separation unit manufacturer

The start-up of the air separation plant includes three stages: cooling, hydrops and purification. For a certain equipment, the start-up time is roughly certain. As for the low-pressure air separation equipment, there is no room to adjust the pressure of the air compressor. Generally, it depends on two expansion machines working at the same time to increase the refrigerating capacity in the start-up stage and shorten the start-up time. Even so, according to the maximum refrigeration capacity and the cooling required by cooling and Hydrops of the device, the start-up time of the device needs to be more than 36 hours. Large air separation plants are generally equipped with liquid oxygen storage tanks as emergency standby oxygen. If necessary, can liquid oxygen be filled into the tower to shorten the start-up time of the air separation plant? Theoretically, it is completely possible. For example, if filling 1M3 liquid oxygen into the main cooling, it is equivalent to providing 0.47 × 1...

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 plant. 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 the heat transfer effect; steam and CO2 will freeze and precipitate in succession under the condition of low temperature, thus blocking the gas Channel and the sieve hole of the tower plate; the accumulation of acetylene and hydrocarbon tables in the distillation column is excessive, it is easy to trigger explosion. Therefore, in order to improve the safety, reliability and economy of the unit operation, the air must be purified.