Zeolite Molecular Sieve

Features:

Zeolite molecular sieves have the structure and characteristics of crystals, the surface is a solid skeleton, and the internal holes have the function of adsorbing molecules. There are pores connected to each other, and molecules pass through the pores channels. Due to the crystalline nature of the pores, the pore size distribution of molecular sieves is very uniform. Molecular sieves selectively adsorb molecules according to the size of the holes in their crystal, that is, they adsorb molecules of a certain size and repel molecules of larger substances, so they are figuratively called "molecular sieves."

3A molecular sieves are usually formed by the exchange of potassium ions to 4A molecular sieves instead of sodium ions. They are mainly used for the adsorption of water molecules and are suitable for the drying of gases and liquids, such as LNG, petroleum, ethanol, etc.

3A Molecular Sieve Application Fields
1) Drying of various liquids (such as ethanol)
2) Drying of air
3) Drying of refrigerant
4) Drying of LNG and CH4 gas
5) Drying of unsaturated hydrocarbons and cracking gas, ethylene, acetylene, C3H6, and butadiene

4A molecular sieves can adsorb molecules with a diameter of not more than 4A, such as water, CH3OH, hydrogen sulfide, carbon dioxide, ethylene, C3H6, etc., and are mainly used for drying LNG and a mixture of gases and liquids.

4A Molecular Sieve Application Fields
1. Deep drying of gases and liquids such as air, LNG, alkanes, refrigerants, etc.
2. The production and purification of Ar, the static drying of electronic components, pharmaceutical packaging and moisture-prone substances.
3. As a dehydrating agent in paints, dyes, and coatings material
4. Super adsorbent for suction dryer or cold dryer

5A molecular sieves are usually formed by the exchange of calcium ions to 4A molecular sieves instead of sodium ions. Divalent calcium ions make it an excellent choice for removing carbon dioxide, CO, hydrogen sulfide, and other weakly polar molecules.
5A molecular sieves can be widely used in the separation of n-isomer hydrocarbons, pressure swing adsorption separation, and co-adsorption of water and carbon dioxide.

5A Molecular Sieve Application Fields
1. LNG drying, desulfurization and decarbonization;
2. Nitrogen-oxygen separation, nitrogen-hydrogen separation, oxygen, nitrogen,hydrogen production and concentration ;
3. Petroleum dewaxing, separation of N-chain hydrocarbons, branched-chain hydrocarbons and cyclic hydrocarbons;
4. Pressure swing adsorption devices for oxygen, hydrogen, carbon dioxide and other gases.
5. Air purification, dehydration and carbon dioxide removal.

The X-type molecular sieve 13X has a much larger pore opening than the A-type. It is mainly used for the purification of raw gas in air separation plants to remove water and carbon dioxide; the drying and desulfurization of LNG, liquefied petroleum gas, and liquid hydrocarbons; and the deep drying of general gases.

13X (APG) special molecular sieve for air separation is a sodium-type aluminosilicate, the pore size of the crystal is 9Å (0.9nm), and it can adsorb any molecule smaller than 9A, so usually it can be used for the drying of general industrial gas and the purification (simultaneous removal of H2O and CO2 and some hydrocarbons) of feed gas in air separation units. It meets the special requirements of the cryogenic air separation industry, improves the adsorption capacity of carbon dioxide and water, and avoids the phenomenon of freezing towers during the air separation process. It has the characteristics of high carbon dioxide adsorption capacity, low regeneration temperature and long service life.

13X Molecular Sieve Application Fields
1) Gas purification in the air separation unit to remove water and carbon dioxide.
2) Drying and desulfurization of LNG, liquefied petroleum gas and liquid hydrocarbons.
3) Removal of hydrocarbons.
4) Drying and purification of NH3 synthesis gas.
5) Desulfurization and deodorization of aerosol propellants.
6) Cracking gas deCO2
7) Catalyst carrier.
8) Co-adsorption of water and carbon dioxide.
9) Co-adsorption of water and hydrogen sulfide gas.

Zeolite Molecular Sieve, with following specifications: