3A Molecular sieve

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3A Molecular Sieve Introduction: 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 in moisture, but excludes molecules such as unsaturated hydrocarbons which can potentially form polymers; and this maximises lifetime when dehydrating such molecules. Typical Chemical Formula: 0.*5 K2O . 0.*5 Na2O . Al2O3 . 2 SiO2 . 4.5H2O Technical Parameter:Item Unit Technical data Shape Pellet Sphere Diameter mm 1.**1.7 3.**3.3 1.**2.5 3.**5.0 Size ratio up to grade % ≥*8 ≥*8 ≥*6 ≥*6 Bulk density g/ml ≥0.*4 ≥0.*4 ≥0.*8 ≥0.*8 Wear ratio % ≤0.*0 ≤0.*5 ≤0.*0 ≤0.*0 Crushing strength N ≥*5/cm ≥*0/cm ≥*0/piece ≥*0/piece Static water adsorption % ≥*0 ≥*0 ≥*0 ≥*0 Ethylene adsorption % ≤3.0 ≤3.0 ≤3.0 ≤3.0 Water content, as shipped % ≤1.5 ≤1.5 ≤1.5 ≤1.5 Typical Application: Drying of unsaturated hydrocarbons (***** ethylene, propylene, butadien) Cracked Gas Drying Drying of natural gas, if COS minimization is essential, or a minimum co-adsorption of hydrocarbons is required. Drying of highly polar compounds, such as methanol and ethanol Drying of liquid alcohol Static, (non-regenerative) dehydration of insulating glass units, whether air filled or gas-filled. Drying of refrigerants Regeneration: 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 ******0°C is required. A properly regenerated molecular sieve can give moisture dew points below ***0°C. The outlet concentrations on a pressure swing process will depend on the gas present, and on the conditions of the process. Size: 3A - Zeoli