4a Molecular Sieve Zeolite For Drying Natural Gas
Molecular sieves 4A have pore diameters of about 4 Angstroms and allow slightly larger molecules, such as ammonium nitrate and carbon dioxide, to pass through. These sieves are very commonly used to selectively adsorb larger molecules, including water, carbon dioxide, and sulfide compounds during any industrial process or application. They are useful in applications where the contaminants must be removed efficiently without using other mediums or ways, particularly water molecules, vapor, and humidity, and are suitable for the drying of non polar liquids and gases.
4A molecular sieves are mainly used for drying natural gas and various chemical gases and liquids, refrigerants, pharmaceuticals, and other applications. They are also used for air drying and hydrocarbons in compressed air systems and various other industrial applications, and act as dehydrators in paints, polyesters, dyes, and coatings to help them dry faster and make them efficient.
They have very high adsorption capacity, can be used multiple times since they are regenerable, and can selectively adsorb specific molecules from a mixture effectively.
Technical Parameter:
| Model | 4A | |||
| Color | Light gray | |||
| Nominal pore diameter | 4 angstroms | |||
| Shape | Sphere | Pellet | ||
| Diameter (mm) | 1.7-2.5(8*12 mesh) | 3.0-5.0(4*8 mesh) | 1.6(1/16 inch) | 3.2(1/8 inch) |
| Size ratio up to grade (%) | ≥98 | ≥98 | ≥96 | ≥96 |
| Bulk density (g/ml) | ≥0.70 | ≥0.70 | ≥0.68 | ≥0.68 |
| Wear ratio (%) | ≤0.20 | ≤0.20 | ≤0.40 | ≤0.40 |
| Crushing strength (N) | ≥35/piece | ≥85/piece | ≥30/piece | ≥70/piece |
| Static H2O adsorption (%) | ≥21.5 | ≥21.5 | ≥21.5 | ≥21.5 |
| Static methanol adsorption (‰) | ≥15 | ≥15 | ≥15 | ≥15 |
| Water content (%) | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 |
| Typical Chemical Formula |
Na2O . Al2O3 . 2SiO2 . 4.5 H2O SiO2 : Al2O3 ≈2 |
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| Typical Application |
a) Drying and removing of CO2 from natural gas, LPG,air, inert and atmospheric gases, etc e) For fire escape mask g) For filter |
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