cryogenic nitrogen generation Technical principle: The Cryogenic Nitrogen Plant uses the method of deep freezing air separation, that is, liquefying the air and then separating them using the different boiling points of oxygen and nitrogen. That is, it is a method of separating air by the nature of the difference in the concentration of gas and liquid. 聽 Technical advantages锛?/span> 2-1 Adopt high-performance centrifugal air compressor. 2-2 Pre-cooling system: (1) The air-conditioning unit assembled with imported compressors has low power consumption, flexible cooling capacity adjustment and reliable performance. (2) The system can cool the air to 7掳C, effectively preventing the occurrence of water-carrying accidents in the molecular sieve adsorber. 2-3 Purification system: (1) Select molecular sieve dedicated for air separation, make the CO2 content in the air after the adsorber <1PPm> (2) The molecular sieve adsorber can be switched in 8 hours, with few regeneration times and low power consumption. (3) The switching valve of the purification system is made of Japanese tooling products, with reliable action, zero leakage, and switching times greater than 100,000. 2-4Fractionator system: (1) Adopt single-stage distillation and exhaust gas expansion cycle. (2)