What types of molecular sieves are used in oxygen generators？
一、Introduction to oxygen generation molecular sieves
Oxygen generation molecular sieves are a type of material that can selectively adsorb and separate oxygen and nitrogen. At room temperature, oxygen and nitrogen in the air can be separated after passing through oxygen generation molecular sieves, achieving the effect of oxygen generation. They are widely used in medical, aviation, industrial and other fields.
二、Types of oxygen generation molecular sieves
- 3A molecular sieve
The structure of 3A molecular sieve is a tetrahedral structure, with a pore size of about 3 angstroms. Due to the special structure of molecular sieve A material, it can selectively adsorb water molecules and exclude nitrogen and oxygen in the air, thus achieving the purpose of oxygen generation. Molecular sieve A is suitable for low-temperature separation oxygen generators.
- 4A molecular sieve
4A molecular sieve is a commonly used type of molecular sieve. It can remove impurity molecules such as hydrogen, nitrogen, water and carbon dioxide, ensuring the purity of oxygen. The applicable temperature of 4A type molecular sieve is relatively low, and it performs well within the temperature range of -20℃ to 50℃. Therefore, it is usually used in household oxygen generators.
- 5A molecular sieve
5A molecular sieve also has certain applications in oxygen generators. It has a smaller pore size but strong adsorption capacity, which can remove foreign molecules and impurities such as CO2 from oxygen, increasing the content of pure oxygen. Therefore, 5A type molecular sieve is usually used in oxygen generators for low-purity oxygen, and can produce oxygen with a purity of about 92%.
4. 13X Molecular Sieve
13X molecular sieve is one of the commonly used molecular sieve models in oxygen generators. Its main feature is a relatively large pore size, which can effectively remove impurities from oxygen and nitrogen. Meanwhile, the 13X type molecular sieve has a strong molecular adsorption capacity and can adsorb impurity molecules such as CO2 and H2O, thereby significantly improving the purity of oxygen. The 13X type molecular sieve is suitable for the production of high-purity oxygen with a purity of over 95%.
三. Selection of Oxygen Generation Molecular Sieves
When choosing oxygen generation molecular sieves, the following factors need to be considered:
- Application scenarios: Different oxygen generation molecular sieves are suitable for different application scenarios, and the corresponding models should be selected.
- Oxygen generation requirements: Different models should be selected based on the required purity and flow rate of the oxygen to be generated.
- Production cost: Different models of oxygen generation molecular sieves have different prices, and the cost-effectiveness should be comprehensively considered.
In summary, oxygen generation molecular sieves are widely used in medical, aviation, industrial and other fields, with different models suitable for different scenarios. When choosing, various factors need to be considered to achieve the best oxygen generation effect. Each type has different structures and pore sizes, suitable for different types of oxygen generation equipment, and has different characteristics and application scenarios. When choosing oxygen generation molecular sieves, it is necessary to combine actual needs and equipment requirements for selection.
