Product Introduction
3A molecular sieve is potassium A type silica aluminate, is also known as KA molecular sieve which can adsorb the critical diameter of molecules below 3A. It is used for adsorption of water.
Product Features
It has high selectivity,faster adsorption speed,more regeneration times,higher anti-crushing strength and anti-pollution ability,all these improve the efficiency of molecular sieve and prolong the service life of molecular sieve.It is widely used for deep drying of gas and liquid phase in petroleum and chemical industries,refining and pre-polymerization refining.
Technical specifications of 3A molecular sieve
|
I n d e x |
Unit |
Globular |
Strip |
||
|
Diameter |
mm |
1.6-2.5 |
3-5 |
1/16" |
1/8" |
|
Static water adsorption |
≥% |
21 |
21 |
20.5 |
20.5 |
|
Bulk density |
≥g/cm³ |
0.70 |
0.68 |
0.68 |
0.66 |
|
Compressive strength |
≥N/G |
30 |
80 |
30 |
80 |
|
Abrasion loss |
≤% |
0.1 |
0.1 |
0.1 |
0.1 |
|
Package moisture content |
≤% |
1.5 |
1.5 |
1.5 |
1.5 |
Note: The above is typical data. We can also produce per customers' request.
Main Application of 3A molecular sieve
- Drying of liquids such as ethanol. Drying of refrigerant
- Drying of natural gas
- Drying of unsaturated hydrocarbons (ethylene, propylene,butadiene)
- Food grade CO₂drying
- Drying of kerosene and jet fuel
Product Regeneration
3A molecular sieves can be regenerated by using hot dry gases(such as nitrogen).The degree of regeneration depends on the temperature,flow and humidity of the hot and dry gas (the optimal regeneration temperature is 200-350℃).
Product Package and Storage
Packaging: Steel drum / paper drum / aluminum foil bag or according to customer's request.
Storage: Avoid damping and any adsorption of water or organic substance before use. Otherwise it must be regenerated.
FAQ
1.Why is 3A molecular sieve more suitable for insulating glass instead of 4Amolecular sieve?
Because for insulating glass, only water needs to be removed and no other gases (such as oxygen or nitrogen) are required. 3A molecular sieve Specifically adsorbs water, without affecting the gas composition in the insulating layer. If 4A is used, it may adsorb CO₂ and other gases in the air, resulting in internal negative pressure and glass deformation.
2.How to determine if the 3A molecular sieve has become ineffective?
If used together with the color-changing silica gel, the silica gel changes from blue to pink, indicating that the environment is humid, but it cannot directly indicate that the molecular sieve has failed; It also can be determined by weighing method (decrease in water absorption rate) or by detecting the increase in gas humidity with a dew point meter;
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