3A molecular sieve as dessicant
The pore size of 3A molecular sieve is 3 Å . It does not adsorb any molecular larger than 3 Å. It is an alkali metal alumino-silicate, the potassium form of the typ A crystal structure. It will adsorb, in sequence of adsorption rate, helium, neon, nitrogen and water.
According to the industrial application specialties, we endue our products with the characters of higher adsorption speed, stronger crushing and anti-contaminative resistance, more cyclic times and longer work-span. All these advantage have made it come to be the most essential and necessary desiccant in the fields of the deep drying, refinery, polymerization for cracked gases, ethylene, propylene and any other non-acidic gases or liquids in petroleum and chemical industrials.
Typical Chemical Formula
XK2O .Y Na2O . Al2O3 . 2 SiO2 . 4.5H2O (X+Y=1)
SiO2 : Al2O3 ≈2
Technical Property of Molecular sieve 3A
| Item |
Unit |
Technical data |
| Shape |
|
Pellet |
Sphere |
| Diameter |
mm |
1.5-1.7 |
3.0-3.3 |
1.6-2.5 |
2.5-5.0 |
| Size ratio up to grade |
% |
≥98 |
≥98 |
≥96 |
≥96 |
| Bulk density |
g/ml |
≥0.65 |
≥0.65 |
≥0.70 |
≥0.70 |
| Wear ratio |
% |
≤0.20 |
≤0.25 |
≤0.20 |
≤0.20 |
| Crushing strength |
N |
≥45/cm |
≥60/cm |
≥45/piece |
≥60/piece |
| Static water adsorption |
% |
≥20 |
≥20 |
≥20 |
≥20 |
| Ethylene adsorption |
‰ |
≤3.0 |
≤3.0 |
≤3.0 |
≤3.0 |
| Water content, as shipped |
% |
≤1.5 |
≤1.5 |
≤1.5 |
≤1.5 |
Applications
Dehydration of many kinds of liquids (say Ethanol).
Dehydration of air.
Dehydration of Refrigerant.
Dehydration of natural gas or methane.
Dehydration of cracked gas, ethylene, ethyne, propylene or butadiene
Type 3A molecular Sieve is recommended for drying unsaturated hydrocarbons and highly polar compounds such as methanol and ethanol. The 3A structure is particularly effective in dehydrating the inner space of insulating glass windows as well as refrigerant gases.
Regeneration
Molecular Sieve 3A can be revived for reuse and the required factors for revival are temperature and pressure. To remove the adsorbed moisture and other materials, the revival condition shall be set up considering the features of target material and processing environment. The general revival temperature of Molecular Sieve 3A is about 200-350ºC.
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FAQ
Q: What is your experience in your products?
A: We have over 20 years experience in this industry line. We are professional manufacturer in this area.
Q: What is your MOQ?
A: The MOQ is different as per different products, for example, 1 Ton for ceramic ball.
Q: Can you accept small quantity sample order before production?
A: Yes, we can offer sample for your testing first before production.
Q: What is your production time?
A: We have large stock for standard products. For non-standard product ,it will take 7-10 days after order and details confirmed.
Q: What are your payment terms?
A: We accept T/T, L/C for big amount, Western Union for small amount.
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