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5A PSA Molecular Sieve

5A PSA Molecular Sieve

5A Molecular Sieve (11).jpg
5A Molecular Sieve (9).jpg

5A PSA Molecular Sieve

5A Molecular Sieveis an alkali alumino silicate; it is the calcium form of the Type A crystal structure. Type 5A has an effective pore opening of  5 angstroms (0.5 nm). It will adsorb molecules with a kinetic diameter of less than 5 Angstrom and exclude those larger.

It is especially suitable for PSA adsorber applications where it may be used for the separation of normal- and iso- paraffins (C4 to C6 species), in PSA hydrogen purification and in oxygen concentrators.

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Technical Specification of 5A PSA Molecular Sieve/Zeolite


The Test ItemsUnitSphere
Diametermm1.2-1.61.6-2.5
Particle Size%95.5495.54
Static Water Absorption≥%2525
Bulk Density≥g/ml0.740.7
Crushing Strength ≥N/Pc1635
Attrition Rate≤%0.30.3
Package Moisture 575, 2h%11
 N2 Absorption (0.1MPa, 25 )g/ml11.311.3
Static CO2 Absorption≥%1818


Regeneration of 5A PSA Molecular Sieve/Zeolite


Molecular sieve Type 5A PSA 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 5A molecular sieve, a temperature of 250-300°C is required. A properly regenerated molecular sieve can give moisture dew points below -100°C, or mercaptan or CO2 levels below 2 ppmv.

The outlet concentrations on a pressure swing process will depend on the gas present, and on the conditions of the process.


Application of 5A PSA Molecular Sieve/Zeolite


It's used in LPG Hydrocarbons Purification, Dewaxing of Petroleum, PSA Hydrogen Generation, and Dehydration & Purification. 

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