In chemical production, molecular sieve and activated alumina have their own advantages, and which one is more suitable depends on the specific application scenario and needs.

Advantages of Molecular Sieve:

High selectivity: The molecular sieve has a uniform pore size and can selectively adsorb molecules of specific sizes, such as commonly used molecular sieves such as 3A, 4A, 5A, etc., which has very high adsorption selectivity for water molecules.

High-precision dehydration: The drying depth of the molecular sieve can reach -70℃, which is suitable for occasions where high-precision and high-purity dehydration are required, such as the electronics industry, pharmaceutical industry, etc.

Strong regeneration ability: Molecular sieve can be regenerated by heating or desorption and has high recycling efficiency.

Advantages of activated alumina:

High water absorption: When the gas moisture content is high, the water absorption rate of activated alumina is significantly higher than that of molecular sieve, which is suitable for general dehydration needs.

Economy: The cost of activated alumina is relatively low, and in most cases, its water absorption and regeneration capacity can meet production needs, so it has more advantages in terms of cost.

Widely used: activated alumina is widely used in chemical, metallurgy, electronics, petroleum and other industries, and is used in gas dehydration and drying, catalyst support, etc.

Select suggestions:

If a high-precision and high-purity dehydration process is required, such as the electronics industry, pharmaceutical industry, etc., molecular sieves are a more suitable choice.

If it is a normal gas or liquid drying and is more sensitive to cost, activated alumina has more advantages.