What are the most common ways nitrogen machines work?

1, PSA nitrogen adsorption method: based on the internal surface physics of the gas molecular Agent, through a certain pressure adsorption of different gas volumes under the adsorption separation of different gases.

2, low temperature nitrogen method: cryogenic air separation nitrogen is a traditional method of nitrogen, it is air as raw material, after compression, purification, recovery of heat exchange of atmospheric liquid air liquefaction. Liquid air is the boiling point of the main mixture of liquid oxygen and liquid nitrogen, liquid oxygen and liquid nitrogen (at a different atmospheric pressure, boiling point 183 ° C, the latter is 196 ° C), through liquid air distillation, so that they are separated to obtain nitrogen.

3, using air as raw material membrane separation nitrogen production: under certain pressure conditions, the use of different properties of oxygen and nitrogen gas has different membrane separation nitrogen and oxygen penetration rates. Compared with other nitrogen production equipment, it has the advantages of simple structure, small size, no switching valve, less maintenance, fast gas production (≤3 minutes), and easy to expand, which is especially suitable for ≤ 98% nitrogen purity, and has the best performance-price ratio in small nitrogen users. But the nitrogen purity is greater than 98%, PSA nitrogen equipment, which has the same size compared to the price should be higher than 15%.