molecular sieve

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Molecular sieve 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 in moisture, 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 ≈2 Typical Application 1) Drying of unsaturated hydrocarbons (e.g. ethylene, propylene, butadiene) 2) Cracked Gas Drying 3)Drying of natural gas, if COS minimization is essential, or a minimum co-adsorption of hydrocarbons is required. 4) Drying of highly polar compounds 5) Drying of liquid alcohol 6) Static, (non-regenerative) dehydration of insulating glass units, whether air filled or gas-filled. 7) 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 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. Attention To avoid damp and pre-adsorption of organic before running, or must to be reactivated..

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Shanghai Yuanxin Building Materials Co., Ltd

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