Air separation water-resistant silica gel appears as white spherical granules with a high microporous structure, resistant to acid, alkali, and solvents. It has good thermal stability, is non-toxic and odorless, and exhibits high water resistance, adsorption capacity, compressive strength, long service life, and low regeneration breakage rate, outperforming other desiccants. Also known as water-cracking-resistant silica gel, it is commonly used where ordinary silica gel—which has an open porous structure and large specific surface area, making it an excellent desiccant, adsorbent, and catalyst carrier—tends to crack upon water contact, reducing particle integrity and affecting process stability. With advantages such as good thermal stability, non-toxicity, odorlessness, high water resistance, strong adsorption, high compressive strength, long service life, and low regeneration breakage rate, air separation water-resistant silica gel is primarily used for drying air in air separation processes, adsorbing acetylene during the production of liquid air and liquid oxygen, drying compressed air and various industrial gases. It serves as a liquid adsorbent and catalyst carrier in industries such as petrochemicals, power, and brewing, and is used for water purification in water treatment.