Molecular Sieve 5a Used For Separation Of Normal- And Iso Paraffin’s
Introduction
Molecular Sieve type 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.
Molecular Sieve 5A Typical Physical Properties | ||||
Items | Unit | 8*12 Mesh | 4*6 Mesh | |
Bead Size | mm | 1.6-2.5 | 3.0-5.0 | |
Bulk Density | g/ml ≥ | 0.70-0.82 | 0.65-0.80 | |
Equilibrium Water Capacity @ 25℃ | wt% ≥ | 20.5-22.0 | 20.5-22.0 | |
Equilibrium N-hexane Capacity | wt% ≥ | 14.0 | 14.0 | |
Heat of Adsorption | BTU/lb of H2O | 1800 | 1800 | |
Crush Strength | Point Contact | N ≥ | 30-60 | 80-130 |
Variation Coefficient | - | 0.3 | 0.3 | |
Attrition Rate | wt% ≤ | 0.1 | 0.1 | |
Size Qualification | % ≥ | 98 | 98 | |
Package Moisture | wt% ≤ | 1.5 | 1.5 | |
The interval value of the indexes above are on the basis of the different grade of Molecular Sieve 5A |
Typical Application
a) The strong ionic forces of the divalent calcium ion make it an excellent adsorbent to remove water, CO2, H2S from sour natural gas streams, while mini missing COS formation. Light mercaptans are also adsorbed.
b) Separation of normal- and iso paraffins.
c) Production of high purity N2, O2, H2 and inert gases from mixed gas streams
d) Static, (non-regenerative) dehydration of insulating glass units, whether air-filled or gas-filled.
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.