4A molecular sieve
Chemical Formula: Na2O·Al2O3·2SiO2·9/2H2O
Si/Al ratio: SiO2/ Al2O3≈2
Pore diameter:About 4
Use: Desiccant for gas and other material; adsorbent for Ar purification and for the separation of methane, ethane and propane
Technical parameter
|
Parameter |
Unit |
Bead |
Pellet |
|
Diameter |
Mesh |
8*12 |
4*8 |
1/16" |
1/8" |
|
Water adsorption capacity |
≥ %wt |
21 |
21 |
21 |
21 |
|
Methanol adsorption capacity |
≤ mg/g |
140 |
140 |
140 |
140 |
|
Bulk density |
≥ g/ml |
0.66 |
0.66 |
0.64 |
0.64 |
|
Strength |
≥ N |
40 |
90 |
40 |
85 |
|
Abrasion |
≤ %wt |
0.1 |
0.1 |
0.2 |
0.2 |
|
Water content |
≤ %wt |
1.5 |
1.5 |
1.5 |
1.5 |
Reactivation:
1. Removal of water: Hot gas at 200-350°C and pressure 0.3-0.5Kg/cm2 flows through the molecular sieve bed for 3-4 h. lettemperature decreases down to 110-180°C, cooling.
2. Removal of organics: Regeneration is achieved by means ofsteam treatment to remove organics, and then remove water with method 1.
Conservation:
Room temperature, humidity <90%, non-expose to air; non-contactwithwater, acid and alkali..
Packing:
Optional 1: carton box, each box 25kg, inside airtight bag.
Optional 2: carton drum, each drum 30kg or 25kg, inside airtight bag.
Optional 3: steel drum, each drums 150kg.
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