Contaminant Removal From Natural Gas Streams Use 13x Molecular Sieve Desiccant
13X molecular sieve is of the type X crystal, as opposed to the type A crystal of the 3A, 4A, and 5A molecular sieves. However, the 13X molecular sieve is similar to the 4A in that it has sodium ion (Na+) in its structure. The different types of the crystal affect the size of the pore opening. Where the 4A molecular sieve has a 4 angstrom pore opening, the 13x molecular sieve has a 10 angstrom pore opening. It will adsorb everything 3A, 4A, and 5A molecular sieves will adsorb (since it has much larger pores) along with much larger molecules. When an impurity you may want removed is too big for the type A crystal sieves, the 13x molecular sieve can potentially adsorb it.
Another stand-out quality of the 13X sieve is that its large pores allow it to adsorb materially very quickly. 13X molecular sieve also has the most adsorbent capacity of all the typical sieves.
Some common application of 13x sieve is to separate nitrogen from oxygen, remove CO2 in air-purification processes, and to create oxygen enriched air for medical use.
|Molecular Sieve 13X Typical Physical Properties|
|Items||Unit||8*12 Mesh||4*6 Mesh|
|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|
|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|
The molecular sieve shall be stored at room temperature, in which the relative humidity does not exceed 90%, and be not exposed in air, and prevented against water, acids and alkalizes.