5A molecular sieve

5A molecular sieve

It is widely used in organic chemical industry and petrochemical industry, and is also an excellent adsorbent for gas dehydration.

13X molecular sieve

It is widely used in organic chemical industry and petrochemical industry, and is also an excellent adsorbent for gas dehydration.

CaX molecular sieve

It is widely used in organic chemical industry and petrochemical industry, and is also an excellent adsorbent for gas dehydration.

NaLSX molecular sieve

It is widely used in organic chemical industry and petrochemical industry, and is also an excellent adsorbent for gas dehydration.

What are molecular sieves? What are the types of molecular sieves?

We often use desiccant in life, commonly used desiccant activated carbon, activated alumina, molecular sieve, silica gel. Different occasions need to use the desiccant is not the same, molecular sieve is mainly used for the depth of the gas drying, drying effect is good, can be recycled, different types of gases can be used in different types of molecular sieve adsorption removal. Today we come to understand the molecular sieve. Molecular sieve is a kind of aluminosilicate, which is mainly composed of silicon aluminum through oxygen bridge to form an open framework structure. In this structure, there are many well-aligned pores of uniform pore size, which have a large internal surface area. In addition, it also contains metal ions with low electricity price and large ionic radius and bound water. Due to the continuous loss of water molecules after heating, but the crystal skeleton structure remains unchanged, forming many cavities of the same size. The cavities are connected by multiple micropores of the same diameter, and the molecules of the material have the same diameter. A pore having a smaller diameter than the pore is adsorbed in the cavity. Molecules larger than the pores are repelled, so molecules of different sizes are separated until the action of the screening molecule is called a molecular sieve. It is mainly used for the deep drying of various gases and liquids, the separation and purification of gases, liquids, catalyst carriers, etc., so it is widely used in oil refining, petrochemical, chemical, metallurgy, electronics, national defense and other industries, and more and more widely used in medical treatment, Optics, agriculture, environmental protection and many other aspects.

Working principle of molecular sieve

In the low-temperature rectification air separation device, the water, carbon dioxide, acetylene, hydrocarbons and other substances in the raw material air must be removed before the air enters the rectification tower. Otherwise, the water and carbon dioxide will freeze and adhere to the heat exchanger and rectification tower in the low-temperature environment, thus reducing the working efficiency and increasing the resistance of the equipment. Methane in liquid oxygen has high solubility and is not easy to precipitate, while other components will precipitate and aggregate in liquid oxygen in the rectification tower, compromise the operation of the device. In order to avoid blockage and explosion of low-temperature equipment, ensure the long-term safe and reliable operation of the device. Therefore, the molecular sieve is the key device in which the air is purified before the air enters the low temperature cold box.

Regeneration of Molecular Sieve in PSA Air-separation Plant

For PSA pressure swing adsorption molecular sieve air separation equipment, molecular sieve is the core component of the system; only clean compressed air through the molecular sieve continuous adsorption and regeneration, in order to continue the production of nitrogen or oxygen we need.