How to change the specific operation of the adsorption bed of the pressure swing adsorption oxygen generator? Nitrogen machine manufacturers have a set of most suitable operating methods. The main components of the air are oxygen and nitrogen, ambient temperature, different adsorption properties of nitrogen and oxygen (ZMS) in the zeolite molecular sieve in the air (oxygen and nitrogen adsorption), PSA oxygen generator design suitable process, and nitrogen oxygen separation to obtain oxygen. The adsorption capacity of nitrogen on zeolite molecular sieve (stronger than oxygen and nitrogen ions and molecular sieve surface), when the air through the adsorbent bed zeolite molecular sieve adsorbent in the pressurized state, nitrogen and oxygen molecular sieve adsorption, due to less adsorption, in the gas phase enrichment of the adsorption bed, the oxygen and nitrogen separation to obtain oxygen. When the molecular sieve adsorbed nitrogen saturation, stop the air and reduce the adsorption bed pressure, molecular sieve adsorbed nitrogen variable analysis, molecular sieve reuse. More than two switches of the adsorption bed work in turn to continuously produce oxygen. Oxygen and nitrogen have close boiling points, the two are difficult to separate, and get enriched in weather. Pressure swing adsorption oxygen production is usually only 90-95% oxygen (oxygen anion concentration of 95.6%, argon and oxygen rest). Compared with the low temperature air separation device, the oxygen concentration can be more than 99.5%.

The pressure swing adsorption oxygen generator of the adsorption bed must contain two steps of adsorption and desorption. In order to obtain the product gas continuously, the oxygen producing device is usually more than two adsorption beds, and from the point of view of power and stability, in addition to some necessary auxiliary measures. Each bed is generally regenerated by adsorption, pressure, vacuum or pressure, flushing steps such as displacement, pressure increase, and repeated operation cycles. At the same time, each adsorption bed PSA respectively in different steps, under the control of the PLC switch, the coordination of several adsorption bed operations, the pace of practice is staggered, the pressure swing adsorption device, running smoothly, continuous access to product gas. For the actual separation process, other trace groups in the air must also be considered. The adsorption capacity of carbon dioxide and water adsorbents is usually very large in general than that of nitrogen and oxygen, and the adsorption bed of the pressure swing adsorption oxygen generator is filled with adsorbents (or the use of oxygen adsorbents themselves) to enable their adsorption removal.