4A type Molecular Sieve

4A type Molecular Sieve

Short Description:

4A Molecular Sieve Introduction Molecular Sieve type 4A is an alkali alumino silicate; it is the sodium form of the Type A crystal structure. 4A molecular sieve has an effective pore opening of about 4 angstroms (0.4nm). Type 4A molecular sieve will adsorb most molecules with a kinetic diameter of less than 4 angstroms and exclude those larger. Such adsorbable molecules include simple gas molecules such as oxygen, nitrogen, carbon dioxyde and straight chain hydrocarbons. Branched chain hydroc...


  • Port: Jiangxi
  • Product Detail

    Product Tags

    4A Molecular Sieve

    Introduction
    Molecular Sieve type 4A is an alkali alumino silicate; it is the sodium form of the Type A crystal structure. 4A molecular sieve has an effective pore opening of about 4 angstroms (0.4nm). Type 4A molecular sieve will adsorb most molecules with a kinetic diameter of less than 4 angstroms and exclude those larger. Such adsorbable molecules include simple gas molecules such as oxygen, nitrogen, carbon dioxyde and straight chain hydrocarbons. Branched chain hydrocarbons and aromatics are excluded.

     Technical Parameter

    Model 4A
    Color Light gray
    Nominal pore diameter 4 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 ≤0.20 ≤0.20
    Crushing strength (N) ≥35/piece ≥85/piece ≥35/piece ≥70/piece
    Static H2O adsorption (%) ≥22 ≥22 ≥22 ≥22
    Static methanol adsorption(%) ≥15 ≥15 ≥15 ≥15
    Water content (%) ≤1.0 ≤1.0 ≤1.0 ≤1.0
     
    Typical Chemical Formula Na2O . Al2O3 . 2SiO2 . 4.5 H2O
    SiO2 : Al2O3 ≈2
    Typical Application a) Drying and removing of CO2 from natural gas, LPG, air, inert and atmospheric gases, etc.
    b) Removal of hydrocarbons, ammonia and methanol from gas streams (ammonia syn gas treating)
    c) Special types are used in the air break units of buses, trucks and locomotives.
    d) Packed in small bags, it may be used simply as a packaging desiccant.
     
    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 HGT 2524-2010
    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
    molecular sieve Type 4A 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 4A molecular sieve, a temperature of 250-280°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
     Size
    4A – Zeolites are available in beads of 1-2 mm(10×18 mesh), 2-3 mm(8×12 mesh), 2.5-5 mm(4×8 mesh) and as powder, and in pellet 1.6mm, 3.2mm.

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


  • Previous:
  • Next:

  • Related Products

    WhatsApp Online Chat !