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3A/4A/5A Molecular Sieve Desiccant Beads - Selective Adsorbent for Deep Drying of Air, Gases & Liquids

Product Overview

Our Molecular Sieve Desiccant is a synthetic aluminosilicate with a precisely uniform crystalline structure and pores of molecular dimensions. It performs superior selective adsorption​ based on molecular size and polarity, making it the preferred choice for deep drying​ and purification where extremely low dew points are required.

Key Features & Advantages

1. Exceptional Adsorption Capacity:​ High adsorption efficiency even at low relative humidity and elevated temperatures.
2. Selective Adsorption:​ Uniform pore size allows separation of molecules based on their diameter (e.g., 3A excludes all molecules larger than 3 Ångstroms).
3. Deep Drying Ability:​ Can reduce moisture content to below 1% (dew points <-70°C), outperforming silica gel and activated alumina.
4. Regenerable & Long-Lasting:​ Can be fully regenerated by heating or pressure swing for repeated use, offering excellent cost-effectiveness.
5. High Crush Strength:​ Beads/pellets exhibit high mechanical strength, minimizing dust formation and pressure drop in systems.

Typical Applications

1. Air & Gas Drying:​ Deep drying of compressed air, natural gas, hydrogen, oxygen, and inert gases (argon, nitrogen).
2. Refining & Petrochemicals:​ Dehydration and purification of liquid and gaseous hydrocarbons (e.g., LPG, cracked gas), and ethanol dehydration.
3. Insulating Glass (IGU):​ As a durable desiccant in double-pane windows to prevent internal fogging.
4. Other Industries:​ Drying of refrigerants, solvents, and in air brake systems.

Common Types & Specifications (Please specify your offering)

1. Type 3A:​ Pore size 3 Å. Mainly used for drying polar liquids and gases (e.g., ethanol dehydration, cracked gas drying).
2. Type 4A:​ Pore size 4 Å. Standard grade for deep drying of air, natural gas, saturated hydrocarbons, and refrigerant.
3. Type 5A:​ Pore size 5 Å. Used for separation of normal paraffins from branched-chain and cyclic hydrocarbons.

Regeneration:​ Can be regenerated by heating to 200-350°C under a purge gas or by pressure swing.