Adjustment of nitrogen purity obtained through pressure swing adsorption nitrogen production

Thread Content

This post was last edited by Ameba on 2016-12-19 at 10:59. Regulation of the purity of nitrogen produced by pressure swing adsorption; the purity of the nitrogen generated is generally in the range of 95%-99.9%. To obtain nitrogen with a higher purity, additional nitrogen purification equipment is required. The purity of nitrogen is affected only by the nitrogen load of the product; under constant other conditions, the greater the amount of nitrogen discharged, the lower its purity ； Conversely, the higher it is. Therefore, for a set of pressure swing adsorption nitrogen production equipment, by adjusting the load, the product purity can be adjusted arbitrarily between 90% and 99.9%. Deep cryogenic nitrogen production can yield nitrogen with a purity of ≥99.999%. The purity of nitrogen is limited by factors such as the nitrogen load, the number of tray plates, the efficiency of these tray plates, and the oxygen purity in the liquid air; as a result, the range within which its purity can be adjusted is very narrow. Therefore, for a cryogenic nitrogen production system, the purity of the produced nitrogen remains essentially constant and cannot be easily adjusted.