The appearance of air separation water resistant silica gel is white spherical particles, with high microporous structure, acid, alkali and solvent resistance. Good thermal stability. Non-toxic, odorless. It has high water resistance and absorption. High compressive strength, long service life, low regeneration rate of crushing better than other desiccant. Air separation water resistant silica gel, also known as water non-cracking silica gel. Common silica gel has open porous structure, large specific surface area, and can absorb a variety of substances. It is a good desiccant, adsorbent and catalyst carrier. However, it is easy to crack when it meets water, which reduces the particle integrity rate and affects the normal process. Good thermal stability. Non-toxic, odorless. It has the advantages of high water resistance, adsorption, high compressive strength, long service life, low regeneration and crushing rate. Air separation water resistant silica gel is mainly used in the air separation process of air drying, liquid air, liquid oxygen preparation process of acetylene adsorption, compressed air and various industrial gas drying, in the petrochemical industry, electricity, brewing and other industries to do liquid adsorbent and used as a catalyst carrier, used in water treatment for water purification.