What are the commonly used adsorbents for dryers?

In the process of compressed air post-processing, different industries require different levels of compressed air, mainly due to different requirements for the maximum water content. The lower the maximum water content, the deeper the degree of drying required. Therefore, the drying process is particularly important in the process of compressed air post-processing, and choosing the right dryer and adsorbent is the key.

Adsorption Type Air Dryer

The adsorption air dryer, also known as the adsorption dryer, works in a simple way, that is, air flows through the water adsorption material and uses the characteristics of the adsorbent to dry the air.

The water vapor in the wet air is adsorbed into the hygroscopic material or "desiccant", which will gradually saturate the desiccant with adsorbed water. Therefore, the desiccant needs to be regenerated regularly to restore its drying capacity.

The gas drying device widely used in industry is the adsorption dryer, which mainly achieves the drying effect based on the principle of pressure swing adsorption (PSA). Through the two-tower cyclic regeneration work, dry compressed air can be continuously provided to customers.

Commonly Used Adsorbent Types

In the compressed air drying industry, activated alumina, zeolite molecular sieves, silica-alumina gel, etc. are the most commonly used adsorbents, suitable for various types of dryers such as heatless, micro-heat, blast heat, and compression heat, with an average life of more than three years.

Depending on the dew point, energy loss, price cost, regeneration conditions and the condition of the dryer, by selecting different adsorbents and matching them in proportion, the pressure dew point can be as low as -100°C.

If you have air drying unit or air separation unit, welcome to check more details with us, we will recommend the most suitable type of adsorbents for you.