During use, the molecular sieve will gradually lose its adsorption capacity and need to be regenerated to restore its performance. There are two main methods of regeneration:

Temperature change method: remove adsorbed substances by heating molecular sieve. In industry, the molecular sieve is usually heated with a preheated regeneration gas to about 200°C to remove the desorbed adsorbent.

Variable pressure method: Keep the adsorbent temperature unchanged, remove the adsorbed substances by reducing the pressure of inert gas and back-blowing.

The regenerated molecular sieve has good adsorption and mechanical properties like fresh molecular sieve.

What is the difference between molecular sieve and activated carbon?

Molecular sieve and activated carbon are commonly used adsorbents, but they have significant differences in structure and performance:

Structure: The molecular sieve has a regular pore structure and a uniform pore size, while the pore structure of activated carbon is relatively complex and has a wide distribution of pore sizes.

Adsorption performance: Molecular sieve has preferential adsorption ability for polar and unsaturated molecules, while activated carbon has a good adsorption effect on most organic and non-polar molecules.

Application: Molecular sieves are mainly used for drying, purification and catalytic reactions of gases and liquids, while activated carbon is widely used in water treatment, air purification, food decolorization and other fields.