13x Molecular Sieve Desiccant Remove Mercaptans From Hydrocarbon Liquid Streams
Introduction
Zeolite 13X Molecular Sieve 13X is kind of sodium aluminosilicate, with a pore opening of 9-10 angstroms (0.9nm). The main component of the X-type molecular sieve is aluminosilicate, silicon-oxy and alumina tetrahedron to form an FAU-type structure, as know as NaX-type.
Technical Parameter
| Molecular Sieve 13X 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 ≥ | 0.68-0.85 | 0.65-0.80 | |
| Equilibrium Water Capacity @ 25℃ | wt% ≥ | 24.0-27.0 | 24.0-27.0 | |
| Equilibrium Carbon Dioxide Capacity | wt% ≥ | 18 | 18 | |
| Heat of Adsorption | BTU/lb of H2O | 1800 | 1800 | |
| Crush Strength | Point Contact | N ≥ | 30-80 | 80-130 |
| Variation Coefficient | - | 0.3 | 0.3 | |
| Attrition Rate | wt% ≤ | 0.1 | 0.1 | |
| Size Qualification | % ≥ | 97 | 97 | |
| 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 13X | ||||
Application
| Water, dioxide, hydrocarbons removal |
| General industrial gases drying |
| Gas purification in air separation process |
| Natural gas, liquefied petroleum, liquid hydrocarbons(propane, botane…) dehydration |
| Sulfur dioxide and mercaptan removal |
| General gas (such as compressed air, permanent gas) deeply drying |
| Ammonia synthesis gas drying and purification |
| Aerosol propellant desulfurization and deodorization |
| Carbon dioxide removal from cracked gas |
Regeneration:
Molecular sieve Type 13X 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 13X 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 ppm.
The outlet concentrations on a pressure swing process will depend on the gas present, and on the conditions of the process
Attention
Pls avoid damp and pre-adsorption of organic before running, or it must be reactivated.
