As the carbon peaking and carbon neutrality goals move forward, the new energy industrial chain keeps expanding, and standards for process environment control in lithium battery, photovoltaic, hydrogen energy and other segments keep improving. As basic support for production procedures, inert shielding gas with stable supply, proper cleanliness and manageable operation cost directly affects production line operation and product quality. On-site gas generation solutions, thanks to their flexibility, have gradually become a preferred gas supply option for many new energy manufacturing projects. Carbon molecular sieve nitrogen generation technology has also seen wider practical adoption in such scenarios.

　　Carbon molecular sieve serves as the core adsorbent in pressure swing adsorption nitrogen generation systems. Based on the difference in diffusion speed of various gas molecules inside micropores, it preferentially adsorbs oxygen and moisture from compressed air under pressurized conditions to separate nitrogen. When pressure drops, adsorbed components desorb and discharge, and the molecular sieve is regenerated. Two adsorption towers work alternately to maintain continuous gas supply. Using compressed air as raw material, the whole system requires no extra feedstock. Electrically controlled valves switch between adsorption and regeneration cycles, supporting a high level of automation. Operators can adjust nitrogen purity and flow within a certain range according to real-time consumption to match the requirements of different working procedures.

　　Multiple procedures in lithium battery manufacturing require inert surroundings with low oxygen and low moisture. During cathode material synthesis, electrode coating, cell winding, electrolyte filling, sealing and battery recycling, oxygen and moisture may trigger oxidation of active materials and electrolyte deterioration, causing process fluctuation. A steady nitrogen atmosphere blocks unwanted components, lowers operational risks and reduces defective products. Different procedures set different nitrogen specifications. Some fine manufacturing steps demand strict standards on gas purity and dew point, so supporting equipment must maintain consistent working conditions for a long time and avoid purity fluctuation that disturbs production.

　　Photovoltaic silicon material production also relies on inert gas protection. In silicon material purification, high-temperature silicon wafer processing and module welding, silicon tends to react with oxygen at high temperatures and form oxide layers that impair subsequent photoelectric performance. Nitrogen purging and atmosphere protection reduce oxidation loss and stabilize processing conditions to help control production waste. In hydrogen energy and fuel cell sectors, nitrogen acts as a safe replacement medium for pipeline sweeping, tank purging and component assembly. It displaces air inside pipelines and prevents risks from flammable gas mixtures, complying with site safety regulations.

　　Compared with traditional liquid nitrogen tanks and bottled nitrogen supplied externally, on-site gas generation removes transportation and tank replacement links, cuts energy consumption and uncertainties in logistics, and eases storage management. External gas supply may suffer from outage risks due to delivery scheduling, while on-site units can produce gas continuously to match non-stop production schedules. Most equipment is skid-mounted with compact footprint, short installation and commissioning cycle. Routine maintenance mainly covers inspection of filters and valves with a simple management routine.

　　Nevertheless, stable system operation relies on proper pre-design matching. In the planning phase, unit configuration shall be determined based on peak gas consumption, demand fluctuation and ambient temperature and humidity. Molecular sieve quality, pre-treatment filter units and control systems all influence long-term performance. Poor pre-treatment of compressed air allows oil, water and dust into adsorption towers, accelerating performance degradation and shortening the service life of molecular sieve. Therefore, pre-filtration and drying units are essential for long-term stable operation.

　　Along with the long-term growth of the new energy industry, process standards will keep upgrading and gas demand will become more diversified. Built on proven separation principles, carbon molecular sieve nitrogen generation features on-site production and adjustable parameters, fitting inert gas supply requirements of many new energy manufacturing scenarios. With continuous upgrades in adsorbent materials and control algorithms, such gas preparation systems will achieve better energy efficiency and faster response in the future, delivering reliable supporting services for green manufacturing in new energy.