4A Molecular Sieve Desiccant Zeolite Auxiliary For Natural Gas Desulfurization Denitrification
Product Description of 4A Molecular Sieve Desiccant
4A molecular sieve is an alkali metal aluminosilicate, the chemical formula is Na2O.AI2O3.2SiO2.9/2H2O, the pore size is 4A, and it can absorb water, NH3, H2S, sulfur dioxide, carbon dioxide, C2H5OH, C2H6, C2H4 and other critical diameters not greater than The molecule of 4A does not adsorb Tianke molecules (including propane) with a diameter larger than 4A. The selective adsorption performance of water is higher than that of any other molecules. It is one of the largest molecular sieve varieties used in industry and is widely used in the drying of gases and liquids. , can also be used for the refining and purification of certain gases or liquids, such as the preparation of nitrogen.
Ion transfer performance, water softening function
Each oxygen atom in the 4A molecular sieve framework is shared by two adjacent tetrahedra. This structure forms a large crystal cavity that can be occupied by cations and water molecules. These cations and water molecules have greater mobility, allowing for cation exchange and reversible dehydration. 4A molecular sieve conducts ion exchange with aluminum ions on the framework, and each aluminum ion has a negative charge, which can not only bind sodium ions, but also bind other cations. Calcium and magnesium ions can enter the large crystal pores occupied by the original sodium ions and replace the sodium ions in the 4A molecular sieve, that is, the sodium ions in the 4A molecular sieve can undergo ion exchange and can be combined with Ca2, Mg2 ions in hard water. The exchange achieves the purpose of softening the water quality.
The speed of 4A molecular sieve binding calcium and magnesium ions is slower than that of sodium tripolyphosphate, and its binding ability with magnesium ions is weak. 4A molecular sieves can easily remove a small amount of harmful heavy metal ions (such as Pb2, Cd2, Hg2) from aqueous solutions, which is of great significance for water purification.
Technical Specification of 4A Molecular Sieve Desiccant
| Item | Unit | 8*12 Mesh | 4*8 Mesh | |
| Bead Size | mm | 1.6-2.5 | 3.0-5.0 | |
| Bulk Density | g/ml ≥ | 0.72 | 0.70 | |
| Equilibrium Water Capacity @ 25°c | wt% ≥ | 22 | 22 | |
| Equilibrium Methanol Capacity | wt% ≥ | 15 | 15 | |
| Heat of Adsorption | BTU/lb of H2O | 1800 | 1800 | |
|
Crush strength |
Point Contact | N ≥ | 35 | 85 |
| Variation Coefficient | - | 0.3 | 0.3 | |
| Attrition Rate | wt% ≤ | 0.1 | 0.1 | |
| Size Qualification | % ≥ | 98 | 98 | |
| Package Moisture | wt% ≤ | 1.5 | 1.5 | |
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FAQ of 4A Molecular Sieve Desiccant
Q: Could we send a free sample for reference?
A: Yes, of course.
Q: What about the price and MOQ?
A: We promise a competitive price with top quality, & accept both mass and small quantity order.
Q: What is the lead time?
A: Within 15 days after received payment.
Q: Payment term?
A: 100% TT in advance. or 30% TT deposit & balance before shipment.
Q: How to solve problems after sales?
A: Take photos of the problems. After confirmed, we will make a satisfying solution for you within 3 days.
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