1.Molecular Sieve 3A for ethanol drying 2.MF:Na2O,Al2O3,2.53SiO2, ... ethylene, propylene, butadien)2) Cracked Gas Drying3) Drying of natural gas, if COS minimization is essential or a minimum ... by lowering the pressure in the case of pressure swing processes.To remove moisture from a 3A molecular sieve, ... 3.2. AttentionTo avoid damp and pre-adsorption of organic before running, or must to be reactivated.