4A molecular sieve can adsorb mosst moleculars with kinetic dimeter of less 4A which has been used widely in drier unit
Detailed introduction to 4A molecualr seive:
1. Description
This 4A molecular sieve will adsorb most molecules with a kinetic diameter of less than 4 angstroms and exclude those larger. Such adsorbable molecules include simple gas molecules such as oxygen, nitrogen, carbon dioxyde and straight chain hydrocarbons. Branched chain hydrocarbons and aromatics are excluded. It is mainly used to adsorb water, methanol, ethanol, sulfureted hydrogen, carbon dioxide, ethylene, propylene, does not adsorb any larger molecular than 4A, and often used as desiccant in industrials.
2. Chemical Analysis
Diameter: 1.6mm
Size ratio up to grade >98%
Bulk density >100kg/m3
Wear ratio <0.20%
Crushing strength >30N/p
Static water adsorption >21%
Static methanol adsorption >15%
Water content, as shipped <1.5%
4. Application
1) Drying and removing of CO2 from natural gas, LPG, air, inert and atmospherics gases, etc
2) Removal of hydrocarbons, ammonia and methanol from gas streams (ammonia synthesis gas treating)
3) Special types are used in the air break units of buses, trucks and locomotives
4) Packed in small bags, it may be used simply as a packaging desiccant