The three most common ways nitrogen machines work

PSA nitrogen making machine is a small-scale on-site nitrogen making system, which has the characteristics of low cost, fast nitrogen production, simple maintenance, etc., and plays a pivotal role in modern industrial production. However, due to the misoperation of the manufacturer, the equipment does not regularly replace the wearing parts, resulting in early attenuation of the equipment, or the structural damage of the equipment due to the design defects of the equipment, if the misjudgment will be carbon molecular sieve powder, ash spraying reasons. Repeated pulverization of carbon molecular sieve after filling will occur. Repeatedly filled carbon molecular sieve can buy a new set of equipment, so when the nitrogen machine failure must be dealt with in time, can not be stored in the heart, to find experienced nitrogen machine maintenance and replacement manufacturers is very important.

1, PSA nitrogen production method: based on the physical adsorption of gas molecules on the internal surface of the adsorbent, the adsorption capacity of the adsorbent under a certain pressure is different to achieve gas separation.

2, cryogenic nitrogen production method: cryogenic nitrogen separation is a traditional nitrogen production method, which is based on air as raw material, after compression, purification, and then heat exchange to liquefy air into liquid air. Liquid-air is mainly a mixture of liquid oxygen and liquid nitrogen, using the boiling point of liquid oxygen and liquid nitrogen is different (at 1 atmospheric pressure, the boiling point of the former is -183 ° C, the latter is -196 ° C), through the distillation of liquid-air, so that they are separated to obtain nitrogen.

3, membrane separation of nitrogen with air as the raw material, under certain pressure conditions, the use of oxygen and nitrogen and other different properties of gas in the membrane with different penetration rates to make oxygen and nitrogen separation. Compared with other nitrogen production equipment, it has the advantages of simpler structure, smaller volume, no switching valve, less maintenance, faster gas production (≤3 minutes), convenient capacity increase, etc. It is especially suitable for medium and small nitrogen users with nitrogen purity ≤98%, and has the best functional price ratio. When the purity of nitrogen is more than 98%, the price is more than 15% higher than that of PSA nitrogen making equipment of the same specification.