Zeolite 13X(13x molecular sieve) is the sodium form of the type X crystal and has a much larger pore opening than the type A crystals. It will adsorb molecules with a kinetic diameter of less than 9 Angstrom (0.9 nm) and exclude those larger.
It also has the highest theoretical capacity of the common adsorbents and very good mass transfer rates. It can remove impurities too large to fit into a type A crystal and is commonly used to separate nitrogen from oxygen.

Typical Chemical Formula
Na₂O . Al₂O₃ . (2.8±0.2) SiO₂ . (6~7)H₂O
SiO₂ : Al₂O₃ ≈2.6-3.0

Zeolite 13x (13x molecular sieve) technical Parameter

Application
1) Removal of CO₂ and moisture from air (air pre-purification) and other gases.
2) Separation of enriched oxygen from air.
3) Removal of mercaptans and hydrogen sulphide from natural gas.
4) Removal of mercaptans and hydrpogen sulphide from hydrocarbon liquid streams (LPG, butane, propane etc.)
5) Catalyst protection, removal of oxygenates from hydrocarbons (olefin streams).
6) Removal of n-chained compositions from aromatics.
7) Production of bulk oxygen in PSA units .
8) Production of medical oxygen in small scale oxygen concentrators

Regeneration
Zeolite 13x (13x 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 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 ppmv.
The outlet concentrations on a pressure swing process will depend on the gas present, and on the conditions of the process

Size
Zeolite 13x (13x 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.
Attention
To avoid damp and pre-adsorption of organic before running, or must to be reactivated.

Pingxiang Naike Chemical Industry Equipment Packing Co., Ltd. (also known as NKCHEM), the top leading mass transfer product manufacturer of tower packing (column packing) and chemical ceramic. NKCHEM was established from the consortion of several existing factories with a long history.

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