PSA制氮机对空压机及其压缩空气品质的要求

At present, the main raw material on the PSA nitrogen machine market is high-quality compressed air, of course, compressed air, air compressors, and now the world's three major brands: American Shouli Air compressor, Atlas, Ingersoll Rand, matching with these big brands, however, is a good choice, (the course considerations, cost and other aspects can also choose other brands), the choice of air compressor is good, mainly because the compressed air of the nitrogen machine may be an outrageous requirement: First, the oil content in the compressed air must be less than 0.003ppm, the outlet pressure of the compressed air must be controlled at 0.75MPa to 1.2MPa, the pressure loss of the compressed air from the air compressor system makes the nitrogen of the machine system, so the air compressor generally supports 0.8MPa, because the working principle of the nitrogen machine is pressure shift adsorption. Therefore, the pressure of the air compressor is very important, which determines the quality of nitrogen, but it does not mean that the greater the pressure, the better, the pressure of 1.2MPa, will cause the molecular sieve to crush, so it must be less than 1.2MPa, usually the best choice for screw air compressors, piston compressor outlet temperature is high, high oil content, which will directly affect the service life of the ring molecular sieve. And air treatment equipment relatively frequent replacement of the filter element, three imported brands of imported air compressors are generally controlled at less than 3ppm oil content, domestic air compressor oil content is high, high water temperature, generally with activated carbon filters and oil, or reduced service life of molecular sieve, molecular sieve nitrogen machine import market prices are generally more expensive, if taking into account maintenance costs and prices, The selection of imported screw air compressors is the best choice, but for small cubic nitrogen machines, you can choose domestic air compressors.

However, in fact, it must be clear that the quality of compressed air has higher requirements for nitrogen molecular sieve, and the configuration of the nitrogen machine carefully listens to the opinions of the manufacturer to achieve a reasonable configuration.