
3A Molecular Sieve For Drying Of Nitrogen-hydrogen Mixed Gas

Molecular sieves are a type of aluminosilicate, which are mainly composed of silica-alumina through oxygen bridges, forming an open framework structure. In this structure, there are many pores of uniform pore size and well-arranged pores, which have a large internal surface area. In addition, it also contains metal ions with low electricity price and large ionic radius and water in a combined state. Since water molecules are continuously lost after heating, but the crystal skeleton structure remains unchanged, many cavities of the same size are formed, and the cavities are connected by multiple micropores with the same diameter, and the molecules of the material have the same diameter. Pores with diameters smaller than the pores are adsorbed in the lumen. Molecules larger than the pores are repelled, so molecules of different sizes are separated until the action of sieving molecules is called molecular sieve. It is mainly used for deep drying of various gases, liquids, separation and purification of gases, liquids, catalyst carriers, etc., so it is widely used in refining, petrochemical, chemical industry, metallurgy, electronics, defense industry, etc., and in medical, optical work, It is also increasingly used in agriculture, environmental protection and many other aspects.
3A molecular sieves are mainly used for petroleum cracking gas, olefins, refineries, oil field gas drying, chemicals, pharmaceuticals, industrial desiccants such as hollow glass.
The main purpose:
1. Drying of ethanol and other liquids
2. Insulating glass drying
3. Drying of nitrogen-hydrogen mixed gas
4. Refrigerant drying
Technical Parameter:
| Model | 3A | |
| CAS Number | 308080-99-1 | |
| Nominal pore diameter | 3 angstroms | |
| Shape | Sphere | Pellet |
| Diameter (mm) | 1.7-2.5(8*12 mesh) | 1.6(1/16 inch) |
| Size ratio up to grade (%) | ≥98 | ≥96 |
| Bulk density (g/ml) | ≥0.70 | ≥0.68 |
| Wear ratio (%) | ≤0.20 | ≤0.40 |
| Crushing strength (N) | ≥55/piece | ≥30/piece |
| Static H2O adsorption (%) | ≥21 | ≥21 |
| Ethylene adsorption (‰) | ≤3.0 | ≤3.0 |
| Water content (%) | ≤1.5 | ≤1.5 |
| Typical Chemical Formula |
0.4K2O . 0.6Na2O . Al2O3 . 2SiO2 . 4.5 H2O (SiO2 : Al2O3 ≈2) |
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