4A Molecular Sieve - High Quality Zeolite Adsorbents for Efficient Filtration
description1
Model |
4A |
|||
Color |
Light gray |
|||
Nominal pore diameter |
4 angstroms |
|||
Shape |
Sphere |
Pellet |
||
Diameter (mm) |
1.7-2.5 |
3.0-5.0 |
1.6 |
3.2 |
Size ratio up to grade (%) |
≥98 |
≥98 |
≥96 |
≥96 |
Bulk density (g/ml) |
≥0.72 |
≥0.70 |
≥0.66 |
≥0.66 |
Wear ratio (%) |
≤0.20 |
≤0.20 |
≤0.20 |
≤0.20 |
Crushing strength (N) |
≥35/piece |
≥85/piece |
≥35/piece |
≥70/piece |
Static H2O adsorption (%) |
≥22 |
≥22 |
≥22 |
≥22 |
Static methanol adsorption(%) |
≥15 |
≥15 |
≥15 |
≥15 |
Water content (%) |
≤1.0 |
≤1.0 |
≤1.0 |
≤1.0 |
Typical Chemical Formula |
Na2O . Al2O3 . 2SiO2 . 4.5 H2O SiO2 : Al2O3 ≈2 |
|||
Typical Application |
a) Drying and removing of CO2 from natural gas, LPG, air, inert and atmospheric gases, etc. b) Removal of hydrocarbons, ammonia and methanol from gas streams (ammonia syn gas treating) c) Special types are used in the air break units of buses, trucks and locomotives. d) Packed in small bags, it may be used simply as a packaging desiccant. |
|||
4A Molecular Sieve Application Areas
Drying, dehydration, and purification of gases and liquids:Molecular sieves can deeply dry and dehydrate various gases and liquids, such as air, natural gas, alkanes, and refrigerants, preventing pipeline corrosion and equipment damage.
Gas separation and purification: By utilizing the pore size and selective adsorption properties of molecular sieves, the separation and purification of gas mixtures can be achieved.
Catalytic cracking and petroleum processing:Molecular sieves play an important role as catalysts or catalyst supports in petroleum refining and processing.
In the environmental field:Molecular sieves can separate substances that have not been degraded after biological treatment in wastewater treatment, and remove heavy metal ions through ion exchange adsorption.
Molecular sieves are a class of crystalline aluminosilicates (or heteroatom-substituted aluminosilicates) with a uniform microporous structure. They are named for their ability to selectively adsorb substances according to molecular diameter, much like a sieve. They possess three core functions: adsorption, ion exchange, and catalysis, making them key materials in industrial separation, catalysis, and environmental protection. 4A molecular sieve is one of their most representative varieties.
