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Type B Gas Molecular Sieves can absorb water,methanol,ethanol,hydrogen sulfide,sulfur dioxide,carbon dioxide,ethylene,propylene,don’t absorb any molecules(including propane) whose aperture more than 4Å.4A molecular sieve has higher performance of water adsorption capability than any other molecular sieve.It is one of molecular sieves varieties which has the largest dosage.
|Static water adsorption||≥%wt||21.5||21.5||21.5||21.5||RH10%,25°C|
|Loss on ignition||≤%wt||1.50||1.50||1.50||1.50||575°C,1H|
|Loss on attrition||≤%wt||0.10||0.10||0.20||0.20|
Removal of CO2 and moisture from air (air pre-purification) and other gases.
Separation of enriched oxygen from air.
Removal of mercaptans and hydrogen sulphide from natural gas.
Removal of mercaptans and hydrpogen sulphide from hydrocarbon liquid streams (LPG, butane, propane etc.)
Catalyst protection, removal of oxygenates from hydrocarbons (olefin streams).
Removal of n-chained compositions from aromatics.
Production of bulk oxygen in PSA units.
Production of medical oxygen in small scale oxygen concentrators.