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3A (pore size 3 Å): Adsorbs NH3, H2O, (not C2H6), good for drying polar liquids.
4A (pore size 4 Å): Adsorbs H2O, CO2, SO2, H2S, C2H4, C2H6, C3H6, EtOH. Will not adsorb C3H8 and
higher hydrocarbons. Good for drying nonpolar liquids and gases.
5A (pore size 5 Å): Adsorbs normal (linear) hydrocarbons to nC4H10, alcohols to C4H9OH, mercaptans to C4H9SH. Will not adsorb isocompounds or rings greater than C4.
13X (pore size 10 Å): Adsorbs di-n-butylamine (not tri-n-butylamine). Useful for drying .
Indicators can be adjusted according to customer requirements.
Type | Bulk density | Water absorption | Wear ability | Application |
3A | 0.60-0.68 | 19-20 | 0.3-0.6 | Drying agent for pyrolysis gas and alkene |
4A | 0.60-0.65 | 20-21 | 0.3-0.6 | Drying agent for natural gas and absorbent for paraffin separation |
5A | 0.60-0.65 | 20-21 | 0.3-0.5 | Dehydration, desulfurization and purification of air, natural gas and oil, in oxygen making and hydrogen making by PAS processes |
13X | 0.55-0.65 | 23-24 | 0.3-0.5 | Dry and decarbonation in air separation |
Product quality protection 
