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Application scope of molecular sieve desiccant

2024/7/18

3A type molecular sieve:
Mainly used for drying petroleum cracking gas, olefins, refinery gas, and oilfield gas, it is an industrial desiccant for chemical, pharmaceutical, insulating glass, and other industries.
Chemical formula: 2/3K2O · 1/3Na22O · AI2O3 · 2SiO2 ·. 9/2H2O
Main application: 1. Drying of liquids (such as ethanol)
2. Air drying in insulated glass
3. Drying of nitrogen hydrogen mixture gas

4. Drying of refrigerant

4A type molecular sieve:
Mainly used for drying natural gas, various chemical gases and liquids, refrigerants, pharmaceuticals, electronic materials, and volatile substances, purifying argon gas, and separating methane, ethane, and propane.
Chemical formula: Na2O · Al2O3 · 2SiO2 · 9/2H2O
Main applications: 1. Deep drying of gases and liquids such as air, natural gas, hydrocarbons, refrigerants, etc;
2. Preparation and purification of argon gas;
3. Static drying of electronic components and substances that are prone to moisture and deterioration;

4. Dehydrating agents are used in paints, polyesters, dyes, and coatings.

5A type molecular sieve:
Chemical formula: 3/4CaO · 1/4Na2O · Al2O3 · 2SiO2 · 9/2H2O
Main applications: 1. Natural gas drying, desulfurization, and decarbonization;
2. Nitrogen oxygen separation, nitrogen hydrogen separation, to produce oxygen, nitrogen, and hydrogen;
3. Petroleum deparaffinization, separation of ortho hydrocarbons from branched and cyclic hydrocarbons.
(Renewable)

The high specific surface area and polar adsorption of 5A molecular sieve achieve deep adsorption of water and residual ammonia. The decomposed nitrogen hydrogen mixture enters the dryer to remove residual moisture and other impurities. The purification device adopts a dual adsorption tower process, where one adsorbs dry ammonia decomposition gas and the other desorbs water and residual ammonia under heating (usually at 300-350 ℃) to achieve regeneration.

13XAPG molecular sieve:

Mainly used for purifying feed gas in large and medium-sized air separation units.

Hollow glass specific molecular sieve series:

It can simultaneously adsorb moisture and residual organic matter in insulating glass, making the insulating glass smooth and transparent even at very low temperatures, fully reducing the strong internal and external pressure difference that insulating glass bears due to seasonal and diurnal temperature differences, completely solving the problem of distortion and breakage caused by the expansion or contraction of ordinary insulating glass drying agents, and fully extending the service life of insulating glass.

Molecular sieve activated powder series:
It is a molecular sieve synthesized from dehydrated raw materials. It has certain dispersibility and fast adsorption speed. Mainly used as an additive for coatings, paints, resins, and related adhesives.

Application scope of molecular sieve desiccant

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