Product Information

5A Molecular Sieve

Product Name: 5A Molecular Sieve
Model: 5A
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Brief

5A Molecular Sieve is an alkali alumino silicate; 5A molecular sieve is the calcium form of the Type A crystal structure.5A Molecular Sieve has an effective pore opening of 5 angstroms (0.5 nm).


5A Molecular Sieve  A detailed description of

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

 Typical Chemical Formula
0.7 CaO . 0.3 Na2O . Al2O3 . 2 SiO2 . 4.5H2O

Application
5A Molecular Sieve The strong ionic forces of the divalent calcium ion makes it an excellent adsorbent to remove water, CO2, H2S from sour natural gas streams, while minimising COS formation. Light mercaptans are also adsorbed.
5A Molecular Sieve It is also used for the separation of normal- and iso paraffins.
5A Molecular Sieve Production of high purity N2, O2, H2 and inert gases from mixed gas streams.

Technical Parameter

Item

Unit

Technical data

Shape

 

Pellet

Sphere

Diameter

mm

1.5-1.7

3.0-3.3

1.7-2.5

3.0-5.0

Size ratio up to grade

%

≥98

≥98

≥96

≥96

Bulk density

g/ml

≥0.64

≥0.64

≥0.66

≥0.66

Wear ratio

%

≤0.20

≤0.40

≤0.20

≤0.20

Crushing strength

N

≥30/cm

≥45/cm

≥30/piece

≥60/piece

Static water adsorption

%

≥21.5

≥21.5

≥21.5

≥21.5

Water content, as shipped

%

≤1.5

≤1.5

≤1.5

≤1.5



 Regeneration
5A Molecular sieve 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.

Size
5A Molecular Sieve are available in beads of 1-2 mm, (10x18 mesh) 2-3 mm, (8x12 mesh) , 2.5-5 mm, (4x8 mesh) and as powder, and in pellet 1.6”, 3.2”.

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