Zeolite molecular sieve: the "chip" of medical oxygen production system

The new crown rages around the world, and there is a wailing everywhere. Masks, protective clothing, ventilators, etc. have made great contributions to the protection of human life, and today I will introduce you to another warrior who defends our blue planet "the zeolite molecular sieve in the molecular sieve oxygen generation system." Experience from the frontline of the fight against the epidemic tells us that "oxygen therapy" is a very important symptomatic treatment measure in the treatment of new coronary pneumonia. According to Dingxiangyuan, the role of oxygen therapy is to increase the partial pressure of oxygen in arterial blood, oxygen saturation and oxygen content to correct hypoxemia, ensure oxygen supply to tissues, and achieve the purpose of alleviating tissue hypoxia. Therefore, oxygen therapy is not only for critically ill patients who require mechanical ventilation with a ventilator, but also for patients with hypoxemia. In the outbreak area, the excessive oxygen demand (some hospitals face ten times the daily peak oxygen demand) has plagued hospitals with treatment problems. In addition to the shortage of personnel and protective equipment, the problem of oxygen supply has also become a major problem. The development of oxygen supply in hospitals At present, the oxygen supply in medical institutions adopts centralized oxygen supply. According to the different oxygen sources, it can be divided into three methods, namely: oxygen supply from bottle oxygen through oxygen bus decompression and centralized oxygen supply; liquid oxygen storage tank through liquid oxygen vaporizer vaporization and decompression , Centralized oxygen supply after stabilization; and continuous supply of medical oxygen produced by pressure swing adsorption oxygen equipment (PSA). Liquid oxygen and bottle oxygen are traditionally used oxygen sources in hospitals. The transportation of liquid oxygen is inconvenient and the bottle oxygen is bulky and difficult to carry. The use of medical molecular sieve oxygen production equipment not only solves the problem of cylinder oxygen and liquid oxygen need to be filled on time, but also solves the problem of cylinder oxygen. With liquid oxygen, there are potential safety hazards due to high pressure, and the oxygen source is convenient and the equipment is easy to automate. Medical molecular sieve oxygen production equipment uses air as raw material, zeolite molecular sieve (ZMS) as adsorbent, pressure swing adsorption (PSA) is used to produce oxygen, and the concentration of oxygen produced is usually 93±3%. As the "chip" of oxygen production equipment, molecular sieve is the main core material for the application of centralized oxygen supply and mobile medical and home health oxygen oxygen generators. The zeolite molecular sieve used in pressure swing adsorption oxygen production in my country reaches thousands of tons every year. (Of course these also include some non-medical oxygen supply uses), most of which are imported from abroad. Under the global epidemic, the demand for zeolite molecular sieves is naturally rising by leaps and bounds. The working principle of molecular sieve oxygen production