Molecular Sieve Type 4A

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  • 8/14/2019 Molecular Sieve Type 4A


    MOL SIEVE 4A is a crystalline aluminosilicatewith SiOz:AlzO3 as 2: 1. It is fonned by anextensive cross-linking of A1O4 and SiO4tetrahedra, resulting in a unifonn pore openingof 0.4 nm. GMGB manufactures 4A molecularsieve in the fonn of 3 mm dia extruded pellets bythe State of the Art technology in its plant atMehsana. The products have at least equal toand, in some cases, better properties than whathave been specified in the Bureau of' IndianStandards: BIS 14211: 1994. Specifically it hasvery high water adsorption capacity, and

    mechanical strength, and at the same time verylow attrition loss. Its main application is in airand associated gas drying; however, it may beused favourably also in place of activatedalumina, where a lower dew point is required.The robust nature of the product makes itsuitable for application in high pressure. GMGBuses clays from its own mines in themanufacture of this product, ensuring bettercontrol and unifonnity in the quality of the finalproduct.

    SpecificationsGMGB Moisieve4A

    Unit 3.0 mm dia

    cylindrical pellets 2-4mm Spheres

    Range Typical Range TypicalEquilibrium Water Adsorption %w/w 18.0 - 20.0 18.5 20.0 - 23.0 21.5Capacity at 30C and 15% RHEquilibrium Water Adsorption %w/w 20.0 - 23.0 21.5" 23.0 - 26.0 24.5

    Capacity at 30C and 75% RHThermal stability after 600C %w/w 18.0 - 20.0 18.5 20.0 - 23.0 21.5Equilibrium Water AdsorptionCapacity at 30C and 15% RHCrushing strength Kg 6.0-16.0 10.0 4.0-8.0 6.0Attrition Loss on Tumbling % 0.02-0.3 0.15 0.02-0.15 0.05


    Bulk Density Kg/Lit 0.60 - 0.70 0.65 0.75 - 0.85 0.81Free Moisture (Max.) % 1.5 - 1.5 -


    Bed Crushing Strength % 80-90 88 80-90 88

  • 8/14/2019 Molecular Sieve Type 4A


    Gujarat Multi Gas Base Chemicals Pvt. Ltd.Opp. ONGC Nagar, Palavasana,Mehsana-384 003 (Guj), India.North Gujarat - INDIATel. : +91-2762-251265 - 251270

    Fax: +91-2762 - 252582Email : manekmin@sancharnetinEmail : manekmin@wilnetonline.netI

    PackingMOLSIEVE4A is packed for industrial use in airtight MS drums underhot condition with proper sealing arrangement so that there is no ingress

    of moisture during storage and transportation. Standard Packing: 210Lit drum size 565 x 850 (H) mm.Life:MOLSIEVE 4A has infinite shelf life, when stored in packed condition.The active service life would depend, however, on the operating conditionsof the plant, actual application, and the usage by the customer.

    Loading;. .MOLSIEVE 4A does not require any special precaution or procedureduring loading. However, the health of the grid support is to be checked,and the vessel is to be cleaned of dust, foreign particles, etc. before theadsorbent is loaded. During actual loading, the material should be pouredcarefully through funnel and chute so as to avoid dusting and attrition. Thedrums should not be kept in open condition, as the adsorbent would adsorbmoisture. In case of prolonged exposure of the adsorbent to moisture duringstorage / loading, it may require prolonged regeneration at highertemperature to restore its full adsorptive capacity

    Material Safety Data:The product as such is neither inflammable, nor toxic. Over all, it is nothazardous. Repeated exposure may irritate skin, eyes and respiratorysystem. The product gets hot as it is first exposed to atmosphere due toadsorption ofmoisture.


    MOLSIEVE 4A should be regenerated thermally or by evacuation withsimultaneous purge. For thermal regeneration, the adsorbent may be heatedto 150to 200 C by a hot and dry gas. However, the exact regenerationcondition (temperature, purge gas flow, etc.) depends on the application,feed quality and other operating conditions. For a better performance overprolonged period, GMGB's 4Amolecular sieve(YourGradeName) shouldnot be exposed to temperatures above450Crepeatedly.

    Applications:1. Moisture removal/Drying from Associated Gas (LPG) down to dew

    point of around 100C2. Simultaneous removal of moisture and CO2from gaseous streams.3. Organic Liquid Drying4. Removal of Moisture & CO2from feed air to cryogenic plants (N2-02

    Plant).5. Air Drying for dew point of less than 60C

    Marketing OfficeMUMBAIC-11, 3rd Floor, Krishna C.S.H. Ltd, Subhash Raod,Nr. Express Highway, Vile Parle (East) Mumbai-400 057Ph.: (022)30979944, 31075328E-mail:,


    8-B, Navdeep Appartment, B/H. C.U. Shah Collage,Ashram Road, Ahmedabad-09Ph.: (079) 27544318 Fax: (079) 27544314


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