Introduction to the process principle and main features of laboratory nitrogen generator

　　The laboratory nitrogen generator adopts the pressure swing adsorption method, which is a new gas separation technology. Its principle is to separate the gas mixture by using the difference in the "adsorption" performance of molecular sieves on different gas molecules. It uses air as raw material, and uses a high-efficiency, high-selectivity solid adsorbent to selectively adsorb nitrogen and oxygen to separate nitrogen and oxygen in the air.
　　The separation effect of carbon molecular sieve on nitrogen and oxygen is mainly based on the different diffusion rates of these two gases on the surface of carbon molecular sieve. Gas with a smaller diameter (oxygen) diffuses faster and more enters the solid phase of molecular sieve. In this way, nitrogen-rich components can be obtained in the gas phase. After a period of time, the molecular sieve's adsorption of oxygen reaches equilibrium. According to the different characteristics of carbon molecular sieve for adsorbing gas under different pressures, reducing the pressure makes the carbon molecular sieve release the adsorption of oxygen. This process is called regeneration. The pressure swing adsorption method usually uses two towers in parallel, alternately performing pressure adsorption and decompression regeneration, so as to obtain a continuous nitrogen flow.

　　The main features and performance of laboratory nitrogen generators:
　　1. High system integration: built-in imported oil-free compressor, without external compressed air;
　　2. Quiet: Independent air compressor isolation cavity, air compressor anti-vibration base, and high-efficiency insulation and sound insulation materials to ensure low noise and low vibration during operation;
　　3. Movable type: casters for easy movement are provided, which can flexibly place the generator where it is needed, and use the laboratory space to a large extent;
　　4. Easy to install: just connect to the application system, plug and play;
　　5. Economical and maintenance-free: Adopting air coagulation dehumidification system and automatic drainage system, no need to replace the dryer. More economical than any other gas supply method;
　　6. Convenience: The output nitrogen flow rate is adjustable, the output nitrogen pressure is adjustable, and the gas can be supplied at any time, no safety hazard;
　　7. Intuitive: Built-in nitrogen purity display to avoid blind spots of nitrogen purity.