Oil-free lubricated nitrogen compressor matching nitrogen generator scheme is a high-purity and high-cleanliness nitrogen production system solution, which is mainly applicable to high-standard scenarios such as laboratory analysis, electronic manufacturing, food medical treatment and precision instrument production that require oil-free nitrogen. Traditional lubricated compressors will produce oil vapor and oil mist during operation, which will pollute molecular sieves and pipeline systems of nitrogen generators, resulting in reduced nitrogen purity and shortened equipment service life. The adoption of oil-free lubricated compressor can completely eliminate oil pollution sources and provide high-cleanliness compressed air raw materials for nitrogen generators.

The core of the supporting scheme is the integrated matching of oil-free compressor and PSA nitrogen generation system. The oil-free lubricated compressor adopts a special piston or screw structure without lubricating oil participation in the compression process, and the discharged compressed air is completely oil-free, clean and pollution-free, avoiding the oil removal burden of subsequent nitrogen purification systems. The compressed air after stable compression enters the precision pre-treatment system, which removes water, dust and trace impurities, and then enters the carbon molecular sieve adsorption tower for oxygen-nitrogen separation. The whole process realizes zero oil pollution in the nitrogen production link, and the nitrogen cleanliness is greatly improved.

This supporting scheme has significant advantages in equipment operation and maintenance. The oil-free compressor has no lubricating oil replacement demand, reducing daily maintenance cost and maintenance frequency. The nitrogen generator molecular sieve will not be poisoned and failed by oil pollution, which greatly extends the service life of molecular sieve consumables and reduces the long-term replacement cost of equipment. The system can stably produce high-cleanliness nitrogen with purity above 99.99%, which meets the strict gas quality requirements of high-end industrial and laboratory scenarios. In addition, the integrated scheme has compact structure, stable operation, low noise and high energy efficiency, which is an optimal configuration for high-standard clean nitrogen production systems.