Working Principles for PSA Nitrogen Generator

The working principles of a Pressure Swing Adsorption (PSA) nitrogen generator revolve around the concept of adsorption and desorption using a specialized adsorbent material. Here is a simplified explanation of its operation:

Adsorption: Compressed air containing nitrogen and oxygen is introduced into the PSA nitrogen generator. Inside the generator, the air passes through an adsorbent material, such as a carbon molecular sieve (CMS). The CMS has a higher affinity for oxygen molecules, allowing it to selectively adsorb oxygen while allowing nitrogen to pass through.

Nitrogen Separation: As the air flows through the CMS bed, the oxygen molecules are trapped and held by the adsorbent material, separating nitrogen from the air stream. This process results in the production of nitrogen gas with a higher concentration of purity.

Desorption: Over time, the CMS bed becomes saturated with adsorbed oxygen molecules. To regenerate the adsorbent material, the pressure in the system is reduced, causing the trapped oxygen to be released from the CMS. This desorption step allows the CMS to be ready for the next cycle of nitrogen production.

Purge Cycle: To ensure the removal of any remaining oxygen and maintain the purity of the nitrogen gas, a portion of the produced nitrogen is redirected back into the system. This purge gas displaces any residual oxygen, purging it from the generator.

Continuous Operation: The PSA nitrogen generator typically consists of multiple adsorption vessels that operate in a cyclic manner. While one vessel is in the adsorption phase, another vessel is in the desorption and purge phases, ensuring a continuous supply of high-purity nitrogen gas.

By leveraging the adsorption and desorption properties of the specialized adsorbent material, the PSA nitrogen generator effectively separates nitrogen from the air, providing a reliable and continuous source of nitrogen gas with the desired purity level.

Main Features for PSA Nitrogen Generator

• Raw material air is taken from nature. Nitrogen can be produced by supplying compressed air and power.
• Nitrogen purity can be adjusted conveniently and be produced by supplying compressed air
• The equipment is highly automated, produces gas quickly, and can be unattended. Nitrogen can be produced within 10-15 minutes of startup.
• The equipment process is simple, occupies a small area, consumes less energy and costs.
• Molecular sieves are filled by snowstorm method to avoid the pulverization of molecular sieves caused by avoid the pulverization of molecular sieves caused by high-pressure airflow impact and ensure the long-term use of molecular sieves.
• On-line inspection of imported analyzer with high access is simple, occupies a small area, consumes less energy,and costs.

Carbon Molecular Sieve

High quality,high density, compact spring loaded, top/bottom balance, protected by a dedicated pressure sensor.
We usually use CMS-240 for purity below 99.99%
And use CMS-260 for purity of 99.999% in one step .

Standard Features

• Siemens PLC
• Customized and improved domestic valves
• 7-inch LCD display
• Taiwan AirTAC solenoid valve
• Chengdu Jiuyin Nitrogen analyzer
• SMC flowmeter
• Professional brand molecular sieve

Optional Features

• Remote control system
• Better valve of brand Gemu, Burkert
• Dew point analyzer
• Import Molecular Sieve
• Italian ODE solenoid valve

-Applications-

• Application of SMT industry
• Semiconductor silicon industry application

Semiconductor and integrated circuit manufacturing process atmosphere protection, cleaning,chemical recovery,etc.

• Electronic components industry application

Selective welding, puring and encapsulation with nitrogen. Scientific nitrogen inert protection has proven to be an essential step in the successful production of high quality electronic components.

• Semiconductor packing industy application

Packaging, reduction, strage with nitrogen.

• Powder metallurgy, metal processing industry

Heat treatment industry application, Steel, iron, copper, aluminum products annealing, carbonization, high temperature furnace protection, Low temperature assembly and plasma cutting of metal parts.

• Chemical industry, advanced material industry application

Nitrogen is used to create oxygen – free atmosphere in chemical process, improve the safety of production process, fluid transmission power source, etc: It can be used for nitrogen purging of pipes and vessels in the system, filling nitrogen Storage tank, gas displacement, leak detection, combustible gas protection, chemical reaction agitation, chemical fiber production protection, also used in diesel hydrogenation and catalytic reforming.

• Oil and gas industry

­Oil refining, container machine pipeline nitrogen-filled purge box leak detection, nitrogen injection oil recovery.

• Food and medicine industry Application

Mianly used in food packaging, food preservation, food storage, (Configurable sterilization filter), food drying and sterilization, medicine packing, medical replacement gas, medicine delivery atmosphere, etc.