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    3A Molecular Sieve

    Molecular Sieve 3A

    Molecular Sieve type 3A is an alkali metal alumino-silicate; it is the potassium form of the type A crystal structure. Type 3A has an effective pore opening of about 3 angstroms (0.3nm). This is large enough to allow in moisture, but excludes molecules such as unsaturated hydrocarbons which can potentially form polymers; and this maximises lifetime when dehydrating such molecules.

    Model

    3A

    Color

    Light gray

    Nominal pore diameter

    3 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

    ≤0.2

    ≤0.2

    Crushing strength (N)

    ≥55/piece

    ≥85/piece

    ≥30/piece

    ≥40/piece

    Static H2O adsorption (%)

    ≥21

    ≥21

    ≥21

    ≥21

    Ethylene adsorption (‰)

    ≤3.0

    ≤3.0

    ≤3.0

    ≤3.0

    Water content (%)

    ≤1.5

    ≤1.5

    ≤1.5

    ≤1.5

    Typical chemical formula

    0.4K2O . 0.6Na2O . Al2O3. 2SiO2. 4.5 H2O SiO2: Al2O3≈2

    Typical application

    a) Drying of unsaturated hydrocarbons (e.g. ethylene, propylene, butadien)
    b) Cracked Gas Drying
    c) Drying of natural gas, if COS minimization is essential, or a minimum co-adsorption of hydrocarbons is required.
    d) Drying of highly polar compounds, such as methanol and ethanol
    e) Drying of liquid alcohol
    f) Static, (non-regenerative) dehydration of insulating glass units, whether air filled or gas-filled.
    g) Drying of CNG.

    Package

    Carton box; Carton drum; Steel drum

    MOQ

    1 Metric Ton

    Payment terms

    T/T; L/C; PayPal; West Union

    Warranty

    a) By National Standard GBT 10504-2008

    b) Offer lifetime consultation on problems occurred

    Container

    20GP

    40GP

    Sample order

    Quantity

    12MT

    24MT

    < 5kg

    Delivery time

    3 days

    5 days

    Stock available

    Regeneration of 3A Molecular Sieve

    Molecular sieve Type 3A can be regenerated by either heating in the case of thermal swing processes; or by lowering the pressure in the case of pressure swing processes.

    To remove moisture from a 3A molecular sieve, a temperature of 200-230°C is required. A properly regenerated molecular sieve can give moisture dew points below -100°C. The outlet concentrations on a pressure swing process will depend on the gas present, and on the conditions of the process.

    Attention

    To avoid damp and pre-adsorption of organic before running, or must to be reactivated.

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