Basic Overview of PSA Silica Gel
PSA Silica Gel, a specialized variant of silica gels, finds significant application in Pressure Swing Adsorption (PSA) processes. It is typically in the form of white or gray microporous particles and is insoluble in water and inorganic acids. Its main component is mmSiO₂·nH₂O, and it can be classified into bulk and sphere types.
Physical and Chemical Properties of PSA Silica Gel
- Mechanical Strength: It has high mechanical strength, which contributes to its durability during use.
- Solubility: Soluble in hydrofluoric acid and concentrated caustic solution.
- Adsorptive Property: Apart from the adsorptive property like ordinary silica gel, it has advantages including good water resistance, low broken rate and long service life.
Applications of PSA Silica Gels
- Air Separation Industry: Mainly used for drying air during the air separation process, adsorbing acetylene, and drying various industrial gases during the preparation process of liquid air and liquid oxygen.
- Petrochemical Engineering: Acts as a liquid adsorbent and catalyst support.
- Electric Utility and Brew Industries: Used in these industries for relevant adsorption and drying purposes.
- Water Treatment: Serves as water purification.
- Automobile and Train Brakes: Especially suitable for being a desiccant in the desiccator for the brake in automobiles and trains.
- Replacement for Other Adsorbents: Can replace the functions of various silica gel, Type A molecular sieve, and active oxidation in some places.
