Sodium type and lithium molecular sieve for oxygen generator
2022-08-01
Molecular sieve oxygen generator generally adopts the pressure adsorption atmospheric desorption (HP) method, and the same cycle process is carried out by two adsorption towers respectively, so as to realize continuous gas supply. Molecular sieve is the most important gas separation material in oxygen generators or nitrogen generators, but it cannot be used all the time, and it also has a certain service life. Nitrogen gas purity.
The size of the oxygen generator mainly depends on two components: the air compressor and molecular sieve.
* The amount of molecular sieve perfusion directly affects the life of the oxygen generator and the amount of oxygen produced;
* The compressor affects the continuous working time and life of the oxygen generator.
Oxygen generator Features
Advanced principle: using molecular sieve zeolite (usually 2 kinds of molecular sieves, sodium based molecular sieve and lithium molecular sieve), pressure swing adsorption technology (PSA) separates oxygen and nitrogen in the air, and filters out harmful substances in the air, so as to obtain medical Oxygen standard high-purity oxygen.
Low cost of oxygen production: Air is used as raw material, no additives, no residue and pollution discharge, and low power consumption.
Easy to use: It produces oxygen when it is plugged in, the operation is simple, the oxygen concentration is stable, the oxygen flow is adjustable, and it can be continuously supplied for 24 hours.
Safe and reliable: The whole set of gas circuit is controlled by low-pressure system program, with stable performance and low noise.
So how can we obtain high concentration pure oxygen? And what role does the molecular sieve play in the oxygen production process?
Oxygen production uses molecular sieve physical adsorption and desorption technology, that is, the oxygen generator is filled with molecular sieve zeolite, and a nitrogen-oxygen separation coefficient index of the oxygen-producing molecular sieves itself is used to preferentially and quickly adsorb nitrogen in the air during pressurization, while the remaining nitrogen is not available. The absorbed oxygen is collected and purified into high-purity oxygen. Of course, different models of oxygen generators and different requirements for oxygen purity and quality require us to choose different types of oxygen generator molecular sieves.
Next, we will focus on the relevant knowledge of molecular sieves used in medical oxygen generators.
* Molecular sieve medical oxygen generators are generally suitable for small and medium-sized hospitals, clinics, health stations etc.; at the same time, they are also suitable for nursing homes, home oxygen therapy, plateau hotels and other oxygen production centers.
Generally, medium and large medical molecular sieve oxygen generators are industrial oxygen generators, and the oxygen flow is 1-20L. Usually, our sodium type oxygen molecular sieves are used, and recommend model is JXOIM-13XHP-501 1.6-2.5mm; Also you can use our lithium molecular sieve, the model is JXOIM-LIX 502 1.3-1.7mm, the oxygen concentration is more than 95%. Under popularization, the flow rate of oxygen generators is generally 1-5L in ordinary wards, up to 20L in emergency room wards, and up to 60L in high-flow oxygen generators. The oxygen for critically ill children + high-flow machine needs to be 10-15L, and the oxygen for critically ill adults is 10-15L. + High flow oxygen concentrators require 35L-40L.
* If the small medical molecular sieve oxygen generator has a flow rate of 3-10L, it is generally suitable for private application scenarios such as homes and hotels. Do not choose 1-2L oxygen generators, because their power is low, and after working for half a year to 1 year, the flow rate is only 0.5-0.8L. Similarly for our molecular sieve, if the 1L molecular sieve oxygen generator works for half a year or a year, the oxygen concentration is only 80%. If you choose a 3L oxygen generator and adjust the flow rate of the machine to 1L and 2L, the oxygen concentration and oxygen flow will be more stable, and the longer the life of the molecular sieve, the longer the life of the oxygen generator. At this time, if you need to replace it, you can buy our sodium-type oxygen-producing molecular sieve, the model is JXOIM-13XHP-500 0.4-0.8mm; if you need to achieve higher oxygen production and lower energy consumption, usually our lithium-type oxygen generator Molecular sieve, oxygen concentration of 90-95%, model JXOIM-LIX-501 0.4-0.8mm is more popular.
Usually imported molecular sieves are mainly Arkema lithium molecular sieves in French and UOP sodium molecular sieves in American, while our domestic molecular sieves generally use lithium molecular sieves.
The efficiency of American sodium molecular sieve is not as good as that of lithium molecular sieve, but it has high moisture resistance and is more stable. Arkema lithium molecular sieves produce oxygen quickly and have high adsorption efficiency, but are prone to moisture. Therefore, in order to maintain the service life and efficiency of the molecular sieve, the molecular sieve oxygen generator should be kept ventilated and dry and run on a regular basis to avoid the oxygen concentration of the lithium molecular sieve not reaching the medical standard due to moisture.
Let’s take a 3L oxygen generator as an example, (see below image). When you adjust the flow to 0.5-3L, the oxygen concentration is 93%, is a normal value. When the flow rate is adjusted to 4L~5L, the oxygen concentration rapidly decreases to 82-78%, which is a false flow rate.
So no matter how much oxygen production your unit scale needs, please contact us, we will provide you with professional technical guidance and recommendations. To know more, please contact as below: info@oimchem.com sales@oimchem.com
Tracy Chen 
