PSA Molecular Sieve 5A

PSA Molecular Sieve 5A 1.PSA Hydrogen Purification 2.In Oxygen Concentrators 3.Production of high purity N2,O2,H2,inert gas

PSA Molecular Sieve 5A 

is 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.

 

Typical Chemical Formula0.70CaO 0.30Na2O Al2O3 2.0SiO2 4.5H2O

SiO2: Al2O3 ≈2

 

 Technical Parameter

Item	Unit	Technical data
Shape		Pellet		Sphere
Diameter	mm	1.5-1.7	3.0-3.3	2.0-3.0	3.0-5.0
Size ratio up to grade	%	≥98	≥98	≥98	≥98
Bulk density	g/ml	≥0.65	≥0.65	≥0.70	≥0.70
Wear ratio	%	≤0.20	≤0.40	≤0.20	≤0.20
Crushing strength	N	≥30/cm	≥45/cm	≥30/p	≥60/p
Static water adsorption	%	≥22	≥22	≥22	≥22
Water content, as shipped	%	≤1.5	≤1.5	≤1.5	≤1.5

Application 1) 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.2) It is also used for the separation of normal- and iso paraffins. 3) Production of high purity N2, O2, H2 and inert gases from mixed gas streams. 

Regeneration Molecular sieve Type 5A 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. 

Size 5A - Zeolites 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”.

Attention

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

PSA Molecular Sieve 5A