... the deep drying, refinery polymerization for cracked gasses, ethylene, propylene and any other non-acidic gasses of ... of liquids (say ethanol), air, refrigerant, natural gas, methane, cracked gas, ethylene, propylene, butadiene.The pore size for 4A ... can mainly used to adsorb water, methanol, ethanol, sulfureted hydrogen, carbon oxide, ethylene ...