3a Zeolite Molecular Sieve For Biogas Drying Ethanol Drying Molecular Sieve Adsorbent
The 3A molecular sieve adsorbent has a 3 angstrom (3A) pore size; this means that any molecule that is larger than the 3 angstrom pores will not be adsorbed. The 3A molecular sieve, the potassium type of A crystalline structure, is a form of alkali aluminosilicate that is created when potassium ions partially replace the sodium ions of a 4A sieve. For a 3A molecular sieve, the sequence rate that adsorption occurs is He, Ne, N, and H2O.
Due to the crystalline structure, molecular sieves that have a 3 angstrom pore size have a very high rate of adsorption and properties (including an increased resistance to outside contamination and crushing strength stronger than other desiccants) that promote a longer life for products treated by the sieve. The most common use for the 3A molecular sieve is to remove water and moisture from materials that are in gas and liquid form.
|Molecular Sieve 3A Typical Physical Properties|
|Item||Unit||8*12 Mesh||4*6 Mesh|
|Bulk Density||g/ml ≥||0.70-0.82||0.65-0.80|
|Equilibrium Water Capacity @ 25℃||wt% ≥||19.0-21.0||19.0-21.0|
|Equilibrium Ethylene Capacity||mg/g≤||3.0||3.0|
|Heat of Adsorption||BTU/lb of H2O||1800||1800|
|Crush Strength||Point Contact||N ≥||20-58||80-130|
|Attrition Rate||wt% ≤||0.1||0.1|
|Size Qualification||% ≥||98||98|
|Package Moisture||wt% ≤||1.5||1.5|
|The interval value of the indexes above are on the basis of the different grade of Molecular Sieve 3A|
1. The drying of refrigerants and coolers.
2. Removal of water and moisture from paint and polyurethane plastics.
3. Drying of natural and cracked gas.
4. Removal of moisture from insulating (both air and gas-filled) glass units.
5. Dehydrating of ethanol, methanol, and other polar compounds.
6. Moisture removal from propylene, ethylene, and other unsaturated hydrocarbons.