Molecular Sieve Desiccant 3A

Molecular Sieve 3A is an alkali metal alumino-silicate; it is the potassium form of the type A crystal structure. Type 3A has an effective pore opening of about 3 angstroms (0.3nm). This is large enough to allow inmoisture, but excludes molecules such as unsaturated hydrocarbons which can potentially form polymers; and this maximizes lifetime when dehydrating such molecules.Typical Chemical Formula 0.4K2O 0.6Na2O Al2O3 2.OSiO2 4.5H2O SiO2 : Al2O3 ≈2Technical ParameterItemUnitTechnical dataShapePelletSphereDiametermm1.5-1.73.0-3.31.7-2.53.0-5.0Size ratio up to grade%≥98≥98≥98≥98Bulk densityg/ml≥0.65≥0.65≥0.70≥0.70Wear ratio%≤0.20≤0.25≤0.10≤0.10Crushing strengthN≥45/cm≥60/cm≥30/p≥70/pStatic water adsorption%≥20≥20≥20≥20Ethylene adsorption%≤3.0≤3.0≤3.0≤3.0Water content, as shipped%≤1.5≤1.5≤1.5≤1.5Typical Application 1) Drying of unsaturated hydrocarbons (e.g. ethylene, propylene, butadien) 2) Cracked Gas Drying 3) Drying of natural gas, if COS minimization is essential, ora minimum co-adsorption of hydrocarbons is required. 4) Drying of highly polar compounds, such as methanol and ethanol 5) Drying of liquid alcohol6) Static, (non-regenerative) dehydration of insulating glass units, whether air filled or gas-filled. 7) Drying of refrigerantsRegeneration Molecular sieve Type 3A 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 3A molecular sieve, a temperature of 200-230°C is required. A properly regenerated molecular sieve can give moisture dew points below -100°C. The outlet concentrations on a pressure swing process will depend on the gas present, and on the conditions of the process.Size 3A - Zeolitesare available in beads of 1-2 mm, (10x18 mesh) 2-3 mm, (8x12 mesh) , 2.5-5 mm, (4x8 mesh)and as powder, and in pellet 1.6", 3.2". Attention To avoid damp and pre-adsorption of organic before running, or must to be reactivated.