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13X molecular sieve is a type of crystalline alkali metal aluminosilicate with a cubic crystal structure, featuring a large pore diameter of 5.0 A. This unique structure endows it with a high specific surface area, making it an excellent adsorbent for various gas and vapor molecules. As a packing material in industrial processes, 13X molecular sieve packing demonstrates superior performance in adsorption and separation applications.
In terms of physical properties, 13X molecular sieve typically has a bulk density of 650-750 kg/m³, a crushing strength of over 80 N/particle, and good thermal stability, allowing it to operate in temperature ranges from -25°C to 350°C. Chemically, it shows strong adsorption capacity for water vapor, carbon dioxide, and other polar molecules, with a water adsorption capacity of up to 21% by weight at 25°C and 50% relative humidity.
The main advantage of 13X molecular sieve lies in its high selectivity and efficiency in gas separation. Unlike other molecular sieves such as 4A or 5A, 13X has a larger pore size, enabling it to adsorb larger molecules like n-paraffins and aromatic hydrocarbons, making it widely used in the separation of mixed gases. In the field of tower internal, 13X molecular sieve packing is often used in adsorption towers, drying towers, and gas purification equipment, effectively removing moisture and impurities from gases.
Common applications include air drying for oxygen generators, natural gas sweetening (removing H2S and CO2), and the separation of nitrogen and oxygen in air separation plants. Its excellent regeneration performance also reduces operational costs, as it can be easily regenerated by heating to 100-150°C, allowing for repeated use.
Overall, 13X molecular sieve plays a crucial role in industrial gas processing, providing reliable and efficient solutions for adsorption and separation needs.
