... for Molecular Sieve 4A Adsorbent . Application :a, Drying and removing of CO2 from natural gas , LPG , air , inert and athmospheric gases , etc ... .b, Removal of hydrocarbons , ammonia and methanol from gas streams ( ammonia syn gas treating)c, Special typs are ... in the case of pressure swing process .To remove moisture from a 4A molecular sieve , a temperature of 250-280°C ...