Ming Shun kdn cryogenic air separation plant equipment

Cryogenic air separation plant is to the air as raw material, through compression cycle approach to air deep-frozen into a liquid, and then through distillation and gradual separation to produce oxygen, nitrogen and argon and other inert gas equipment from liquid air. Cryogenic air separation nitrogen in the air as raw material, through compression, purification, liquefaction of air with a heat exchange fluid become empty. Air Liquide is mainly a mixture of liquid oxygen and liquid nitrogen, liquid oxygen and liquid nitrogen use different boiling points by distillation, so that they are separated to obtain nitrogen. Nitrogen cryogenic process and equipment: 1, typically nitrogen cryogenic process: the entire process is compressed by air and purification, air separation, liquid nitrogen vaporized components. After ⑴ compressed air and clean air through the air filter to remove dust and mechanical impurities into the air compressor, compressed to the desired pressure, and then into the air cooler, reduce air temperature. Re-entering the drying air cleaner, to remove moisture in the air, carbon dioxide, acetylene and other hydrocarbons. ⑵ air separation: the purified air into the air separation column in the primary heat exchanger, is reflux gas (product nitrogen gas) is cooled to the saturation temperature, into the bottom of the distillation column at the top of the tower to get nitrogen, Air Liquide by After the throttle into the evaporator condensate evaporation, while some nitrogen gas condensate distillation column sent by a part of the condensed liquid nitrogen as reflux distillation column and partly as a liquid nitrogen product of air separation column. Exhaust gas through the main heat exchanger re-heat the condensate evaporator out to about 130K into the expander expansion refrigeration cooling capacity of air separation Tati, the expanded portion of the gas as a molecular sieve regeneration and blow cold, then dried into a muffler atmosphere. ⑶ vaporized liquid nitrogen from the air separation column out of liquid nitrogen into the liquid nitrogen storage tank, when the air separation equipment maintenance, liquid nitrogen storage tank after entering into the carburetor is heated nitrogen into the product pipeline. Cryogenic nitrogen can be prepared from ≧ 99.999% purity nitrogen