3A Molecular Sieve
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3A molecular sieves are a potassium type A aluminosilicate crystal, meaning they can adsorb molecules with a critical diameter of less than 3 Å, and a molecular formula of K12[(AlO2)12(SiO2) 12 XH2O.
Application- This 3A molecular sieve can be used for drying unsaturated hydrocarbon materials, such as ethylrnr, propene, 1, 3-butadiene and cracked gas, effectively preventing hydrocarbon from co-adsorption.
- It can be used for the drying of some polar liquids, such as methanol, ethanol, and organic hydroxyl compounds.
- 3A molecular sieves are also applicable for refrigerant drying.
- It is an ideal desiccant used for N2-H2 mixed gas in the synthetic ammonia industry.
- It can be used for the drying of food-grade CO2.
Features
This 3A molecular sieve features a high adsorption rate, high regeneration capacity, crushing strength and anti-pollution capacity, all of which increase the molecular sieve utilization efficiency and extend the molecular sieve's service life. Because of that, it is a necessary desiccant for gas liquid phase deep drying, refining and polymerization in petrochemical industries.
| Shape | striped | trifoliate | ||
| Specification | 1/16" | 1/8" | 1/8" | 1/4" |
| Diameter (mm) | 1.5-1.8 | 3.0-3.4 | 2.4-2.5 | 5.2-5.3 |
| Bulk density(g/mL) | ≥0.65 | ≥0.66 | ≥0.64 | ≥0.60 |
| Crushing strength(N) | ≥30 | ≥75 | ≥55 | ≥120 |
| CO2 adsorption capacity (wt, %) | ≤1.1 | ≤1.0 | ≤1.0 | ≤1.0 |
| H2O adsorption capacity (wt, %) | ≥20 | ≥20 | ≥20 | ≥20 |
| Package water content (wt, %) | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 |
| Adsorbable molecule | Molecule whose effective diameter < 3 angstroms, such as water, ammonia. | |||
| Discharged molecule | Molecule whose effective diameter >3 angstroms, such as ethane, CO2, methanol and so on. | |||
3A-PPG type
| Shape | spherical | striped | ||
| Specification | 8X12 mesh | 4X8 mesh | 1/16" | 1/8" |
| Diameter (mm) | 1.7-2.4 | 3-5 | 1.5-1.8 | 3.0-3.4 |
| Bulk density(g/mL) | ≥0.66 | ≥0.65 | ≥0.65 | ≥0.65 |
| Crushing strength(N) | ≥30 | ≥75 | ≥32 | ≥80 |
| CO2 adsorption capacity (wt, %) | ≤1.1 | ≤1.0 | ≤1.3 | ≤1.3 |
| H2O adsorption capacity (wt, %) | ≥21 | ≥21 | ≥19 | ≥19 |
| Package water content (wt, %) | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 |
| Adsorbable molecule | Molecule whose effective diameter < 3 angstroms, such as water, ammonia. | |||
| Discharged molecule | Molecule whose effective diameter >3 angstroms, such as ethane, CO2, methanol and so on. | |||
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