5A PSA Molecular Sieve
5A PSA Molecular Sieve
5A Molecular Sieve 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.
Description
Technical Specification of 5A PSA Molecular Sieve/Zeolite
| The Test Items | Unit | Sphere | |
| Diameter | mm | 1.2-1.6 | 1.6-2.5 |
| Particle Size | % | 95.54 | 95.54 |
| Static Water Absorption | ≥% | 25 | 25 |
| Bulk Density | ≥g/ml | 0.74 | 0.7 |
| Crushing Strength | ≥N/Pc | 16 | 35 |
| Attrition Rate | ≤% | 0.3 | 0.3 |
| Package Moisture（ 575℃, 2h） | ＜% | 1 | 1 |
| N2 Absorption (0.1MPa, 25℃ ) | ＞g/ml | 11.3 | 11.3 |
| Static CO2 Absorption | ≥% | 18 | 18 |
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.
