Molecular Sieve

Molecular Sieve Properties

a06_membrane_fullMolecular sieve are extremely effective in removing moisture and other contaminants from liquid and gas streams.

These sieve are very useful in gas dehydration and desulfurization operations where cryogenic liquefaction of gases is required and water must be eliminated to avoid freezing. This can be achieved due to their crystalline composition; in which they can create virtually moisture-free products.

Molecular sieve offer a variety of adsorption selectivity based on molecular size, molecular affinity for the sieve crystal surface, and shape of the molecule. They can be regenerated by heating it to an optimal temp from 130°C to 350°C depending on the used sieve type. The ease of use and superior efficiency when compared to other adsorption systems makes the most popular engineering solution a molecular sieve system.

Molecular Sieve 3A 4A 5A 10A 13X, Medaad Adsorption Chemicals

Molecular Sieve Types

Molecular Sieve 3A: Pore Diameter of 3 Angstrom, for drying of polar liquid like ethanol and methanol. Drying of propylene, butadiene and acetylene. Available in
beads, pellets and powder foam.

Molecular Sieve 4A: Pore Diameter of 4 Angstrom, for static drying in gas stream & liquid, like electronics & electric systems, medicine & diagnostic kit packaging,
Perishable food items and chemical packaging. Available in beads, pellets and powder foam.

Molecular Sieve 5A: Pore Diameter of 5 Angstrom, for removal of mercaptans, carbon dioxide and H2S from natural gas, normal paraffin separation of cyclic and branched chain hydrocarbons. Available in beads and pellets foam.

Molecular Sieve 13X: Pore Diameter of 10 Angstrom, for separation of oxygen & nitrogen from air streams, oxygen generation, mercaptan removal from natural gas, insulating glass units. Available in beads and pellets foam.




Natural Gas Industry

Dehydration of natural gas


Desulfurization of natural gas


Dehydration and removal of sulphide species


(COS min)


Removal of sulphide spec. (high CO2 cont.)


Petroleum Refineries

Dehydration and purification of refinery gas


Petrochemical Industry

Cracked gas dehydration in Naphta crackers


Oxygenates removal only


EB/SM purification (catalyst protection)


Chemical Industry

Ammonia syngas make up


Paraffin separation (separation of branched -and iso paraffins)


Industrial Gases

Air pre-purification, Air separation


Air dehydration


Oxygen Generation

Bulk oyxgen production, also VPSA


Medical oxygen production (MEDOX)


Hydrogen Generation

Hydrogen purification


Removal of CO from Hydrogen (PSA)


Alcohol and Solvent Industries

Ethanol dehydration


Alcohol dehydration, Solvent dehydration


Solvent recovery

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