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◎ Air compression: air is compressed to 0.50.7Mpa by air compressor;
◎ Precooling: air is precooled to 510 in the precooling unit, and water is separated;
◎ Purification: Air in molecular sieve purifier to remove residual moisture, carbon dioxide and hydrocarbons;
◎ Air expansion: air expansion and refrigeration in the expansion machine and provide the cooling capacity required by the device;
◎ Heat transfer: Air in the fractionating tower heat exchanger with the back flow of oxygen, nitrogen, waste nitrogen for heat exchange,Is cooled close to the liquefaction temperature and the backflow of oxygen, nitrogen, waste nitrogen repeatedly heat to the ambient temperature;
◎ Supercooling: liquid air and liquid nitrogen before throttle of nitrogen in supercooler;
◎ Distillation: The air is separated in the distillation tower, and the product nitrogen is obtained at the top of the upper tower and at the bottom of the upper tower obtain product oxygen.
◎ Air compression: air is compressed to 0.50.7Mpa by air compressor;
◎ Precooling: air is precooled to 510 in the precooling unit, and water is separated;
◎ Purification: Air in molecular sieve purifier to remove residual moisture, carbon dioxide and hydrocarbons;
◎ Air expansion: air expansion and refrigeration in the expansion machine and provide the cooling capacity required by the device;
◎ Heat transfer: Air in the fractionating tower heat exchanger with the back flow of oxygen, nitrogen, waste nitrogen for heat exchange,Is cooled close to the liquefaction temperature and the backflow of oxygen, nitrogen, waste nitrogen repeatedly heat to the ambient temperature;
◎ Supercooling: liquid air and liquid nitrogen before throttle of nitrogen in supercooler;
◎ Distillation: The air is separated in the distillation tower, and the product nitrogen is obtained at the top of the upper tower and at the bottom of the upper tower obtain product oxygen.
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