Activated Alumina Desiccant Adsorbent for Pressure Swing Adsorption

Activated alumina adsorbents should be porous, active, and acid-absorptive in order to adsorb water, peroxy compounds, organic acids, carbonyls, and other substances that are harmful to transformers and oils. Performance has the following requirements:

① Water absorption rate> 20%;

②Acid absorption> 5mg (KOH) / g (silica gel);

③Moisture <0.5%;

④ The appearance is milky white.

Therefore, the Activated Alumina Desiccant Adsorbent for Pressure Swing Adsorption should be dried and screened before being added to the oil purifier. The amount of adsorbent is determined by the total mass of the oil. When acid-removing silica gel is used, it is about 0.75% to 1.25% of the total mass of the oil. Large numbers of transformers with small capacity are used; small numbers of transformers with large capacity are used. When activated alumina is used, it is about 0.5% of the total oil mass.