Product Introduction
3A Molecular Sieve is a alkali metal silicate, also known as 3A Zeolite Molecular Sieve.
Chemical Formula: 2/3 K2O·1/3 Na2O·Al2O3·2SiO29/2H2O，Effective pore diameter of approximately 3A, primarily used for adsorbing water, without adsorbing any molecule with a diameter greater than 3A. Featuring rapid adsorption speed, multiple regeneration cycles, strong resistance to fracturing and contamination, high utilization efficiency, and long service life, it is an essential desiccant for deep drying, refining, and polymerization in the oil and chemical industries.
Parameters
Categories | Typical characteristics | Symbol | 1/16 inch | 1/8 inch | 4x8 mesh | 8x12 mesh |
3A | Bar | Spherical | ||||
Nominal Aperture (Å) | 3 | 3 | 3 | 3 | ||
Bulk Density (kg/m³) | ≥ | 680 | 680 | 710 | 710 | |
Adsorption Heat | 4186 | 4186 | 4186 | 4186 | ||
Particle Diameter (mm) | Φ1.5-1.7 | Φ3.1-3.3 | Φ3.0-5.0 | Φ1.7-2.5 | ||
Compressive Strength (N) | ≥ | 45 | 90 | 100 | 35 | |
Static water adsorption [75%RH, (35±1)℃] % | ≥ | 21 | 21 | 21 | 21 | |
Moisture Content in Packaging (wt,%) | ≤ | 1.5 | 1.5 | 1.5 | 1.5 | |
Dynamic Water Adsorption Capacity | ≥ | 15 | 15 | 10 | 10 | |
Static Ethylene Adsorption Quantity (mg/g) | ≤ | 3 | 3 | 3 | 3 | |
Particle size | ≥ | 98 | 98 | 98 | 98 | |
3A Molecular Sieve Features
Stable adsorption operation
Our 3A molecular sieve products feature low wear and no dust, solving the issue of large amounts of molecular sieve dust being brought into the system due to low strength and high wear, which can cause pipeline and equipment blockages.
High thermal capacity penetration
The product solves the issue of using medium-pressure steam for humidification in the regeneration process of other types of molecular sieves, which is commonly used to remove adsorbed hydrocarbon substances and surface carbon buildup.
Strong adsorption capacity
Avoided high feed temperature at the desulphurization tower, resulting in increased losses of olefins at the tower top, decreased separation efficiency of the trays, as well as increased pressure drop, and instability of the entire olefin production unit.
Long-lasting usage period
Short regeneration time, long service cycle; after 1-2 years of use, the surface activity remains excellent.
Application Fields
01. This is applicable to separation production units for ethylene, propylene, acetylene, butadiene, and other raw materials where the cracking gas is subjected to deep dehydration and drying. The cracking gas, with a temperature of 16±1°C, pressure of 3.2±0.1MPa, and water content of 600-900PPm, is dried to achieve a dew point below -55°C before entering the pre-cooling system of the low-temperature dehydration tower.
02. Primarily designed for adsorbing moisture in the interlayer gas of insulating glass, continuously absorbing moisture into the spacer during the lifespan of the glass; prevents fogging on the glass, maintaining clarity even at low temperatures, enhancing the insulating and soundproofing properties of insulating glass, thereby reducing energy consumption and significantly extending the service life of the glass.
03. Used for fuel ethanol dehydration, the ethanol can reach 99.99% after dehydration; Low energy consumption, less than 560KJ/L of ethanol without considering the comprehensive energy utilization of other processes; Easy to operate, the entire process can be automated; Environmentally friendly, no toxic or harmful substances are introduced, and the environment is not polluted throughout the process; Long lifespan, under normal operating conditions, the service life can reach 7-10 years.
04. Select specific dedicated molecular sieves for refrigerants. Our XH-7 and XH-9 molecular sieves are suitable for refrigerants with very stable chemical properties, such as R-134a, 1234yf, etc. Refrigerant desiccants can be used to manufacture various automotive air conditioning system accumulator tanks and refrigerant filters, including filters for refrigerators, freezers, air conditioners, and other refrigeration heat exchange units.
