Description:
Molecular Sieve type 3A is a kind of alkali-metallic, silicon-aluminum compounds, it could absorb the molecular which critical diameter is not more than 3 angstroms.
Technical Parameter:
| Properties | Unit | Sphere | Pellet | ||
| Size | mm | 1.6-2.5 | 3-5 | 1/16" | 1/8" |
| Static Water Adsorption | ≥mg/g | 205 | 205 | 210 | 210 |
| CO2 Adsorption | ≤wt% | 1.5 | 1.5 | 1.5 | 1.5 |
| Bulk Density | ≥g/ml | 0.70 | 0.68 | 0.68 | 0.66 |
| Crushing Strength | ≥N | 30 | 80 | 35 | 70 |
| Attrition Rate | ≤wt% | 0.1 | 0.1 | 0.2 | 0.2 |
| Package Moisture | ≤wt% | 1.5 | 1.5 | 1.5 | 1.5 |
Application:
Applied in the dehydration gas streams of unsaturated hydrocarbon (e.g. ethylene, propylene, butadiene, acetylene, etc.) on olefin crackers prior to cryogenic separation of LPG or other olefin products;
Dehydration of benzene, toluene, xylene and other solvents (e.g. ethanol, methanol);
Natural gas dehydration and with min COS formation;
Dehydration of food-grade carbon dioxide;
Dehydration of oil and jet fuel.
Dehydration of liquid alcohol.
Regeneration:
Molecular sieve can be regenerated by either heating in the case of thermal swing processes; or by lowering the pressure in the case of pressure swing processes.
To remove moisture from a molecular sieve, a temperature of 250-300°C is required. A properly regenerated molecular sieve can give moisture dew points below -100°C, or mercaptan or CO2 levels below 2 ppmv.
The outlet concentrations on a pressure swing process will depend on the gas present, and on the conditions of the process.
