Noted: We can custom desiccant for specific application. Accept OEM and ODM orders.
|
Specification |
Parameter |
|
Product Name |
Molecular Sieve Desiccants |
|
Pore Size |
3 Angstroms, 4 Angstroms, 5 Angstroms, 10 Angstroms |
|
Shape and Size |
Beads: 1-2mm, 2-3mm, 3-5mm, 4-8mm |
|
Bulk Density |
0.60-0.80 g/mL (varies with type and size) |
|
Equilibrium Water Capacity (@ 25°C) |
20-25% of weight (depending on grade and pore size) |
|
Heat of Adsorption |
1800-2500 BTU/lb of H2O (varies slightly with type) |
|
Crush Strength |
15-150 N (depending on form and type) |
|
Abrasion Rate |
≤ 0.3-0.5% (depends on shape and size) |
|
Moisture Content (as shipped) |
≤ 1.5% |
|
Regeneration Conditions (temperature) |
200-350°C (depending on the specific application) |
|
Typical Applications |
Insulating glass, drying of gases and liquids, air brake systems, refrigeration systems |
Molecular sieve desiccants are a synthetic porous aluminosilicate crystal material. They selectively adsorb molecules of a specific size (especially water molecules) through its uniform microporous structure (pore size 3-10Å). Their core features include:
1. Super Strong Moisture Absorption Capacity: In a low humidity environment (RH<10%), it can still efficiently absorb moisture. The moisture absorption can reach 20%-25% of its own weight.
2. Precise Selectivity: By adjusting the pore size (such as 3A, 4A, 5A types), it can specifically adsorb water, gas or organic molecules.
3. High Temperature Stability: temperature resistance up to 400-600℃. It is suitable for deep cold, vacuum or high temperature regeneration environment.
4. Chemical Inertness: non-toxic and non-corrosive. It is widely used in petrochemical, electronics, medicine and other fields.
Compared with physical adsorption desiccants such as montmorillonite, molecular sieve desiccants perform better under extreme dry conditions, but the cost is higher.
Types
Our molecular sieve desiccants are classified into four main types based on pore size and chemical composition:3A (3Å), 4A (4Å), 5A (5Å), and 13X (10Å). Each type has specific adsorption properties:
(1) 3A: It adsorbs only water (H₂O), ideal for drying unsaturated hydrocarbons (e.g., ethylene) and refrigerants.
(2) 4A: It captures H₂O and small molecules like CO₂, widely used in compressed air systems, pharmaceuticals, and electronics.
(3) 5A: It adsorbs linear hydrocarbons (n-alkanes). It is applied in petroleum refining, natural gas purification, and gas separation (PSA).
(4) 13X: It removes larger molecules (e.g., CO₂, H₂S, VOCs), suitable for industrial gas purification and medical oxygen production.
Additionally, specialized types like Y-type sieves(catalysis) and carbon molecular sieves (nitrogen generation) serve niche applications. Their high thermal stability (up to 350°C) and regenerability make them superior for precision drying and gas separation.
Custom Service
When customizing molecular sieve desiccants, many factors need to be considered, including its adsorption performance, chemical stability, thermal stability, mechanical strength, particle size and shape, regeneration ability, and application environment. By combining the above factors, the customized desiccant can meet specific needs and improve efficiency and durability. We are a professional manufacturer and supplier. If you have any needs, you can tell us directly and we can provide you with the most professional customization service.
Hot Tags: molecular sieve desiccants, China, manufacturers, suppliers, factory, customized, wholesale, discount, free sample, vacuum storage, vacuum seal packing bags, odour lock cat litter, silica moisture, silica gel for preserving flowers, active mineral desiccant