Apllication of Nitrogen
Nitrogen is commonly used as a protective gas or atmospheric gas in reduction and carburetor processes. Under room temperature and high pressure conditions, oxygen and nitrogen are separated through carbon molecular sieves (CMS) due to their different diffusion rates. The purity and output volume of nitrogen can be adjusted to meet customer requirements.
Principles of PSA Technology
Pressure Swing Adsorption (PSA for short) is an advanced gas separation technology based on the physical adsorption of gas molecules on the internal surface of adsorbents (porous solid substances). It utilizes the characteristics of adsorbents:
- Under the same pressure, adsorbents easily absorb high boiling point gases but hardly absorb low boiling point gases
- The adsorption capacity increases under high pressure and decreases under low pressure
The PSA cycle achieves gas separation through the process of adsorbing impurities under high pressure and desorbing impurities under reduced pressure to regenerate the adsorbent.
Features of PSA Nitrogen Generators
The PSA nitrogen generator is a high-tech, energy-saving separation technology that directly produces nitrogen from air at normal temperature using compressed air as the raw material. It undergoes a series of purification processes including water removal, oil removal and dust removal, and operates based on pressure swing adsorption principles:
- Due to kinetic effects, the diffusion rate of oxygen on carbon molecular sieves is significantly higher than that of nitrogen
- Nitrogen becomes enriched in the gas phase before adsorption reaches equilibrium
- Continuous production of high-quality nitrogen is achieved through PLC automatic control technology
The device offers the following advantages:
- Compact structure, fully automatic operation, and reliable performance
- Fast start-up and shutdown, low operating costs
- Convenient production and maintenance at normal temperature
- Customizable nitrogen purity and output, making it an efficient on-site nitrogen generation solution
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