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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. let temperature decreases down to 110-180°C, cooling.
2. Removal of organics: Regeneration is achieved by means of steam treatment to remove organics, and then remove water with method 1.
Conservation:
Room temperature, humidity <90%, non-expose to air; non-contact with water, acid and alkali..
Packing:
25 Kg (10 gallon) steel pail
150 Kg (bead, 55 gallon) steel pail
130 Kg (pellet, 55 gallon) steel pail |
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