Technical article
2024-10-12
PVDF is called polyvinylindene fluoride, which is the high - performance polymer material. The shape is semi-transparent or white particles. It has good chemical corrosion resistance, high temperature resistance, and oxidation resistance. The melting point is 172℃, the hot deformation temperature is 112-145℃, and the long-term use temperature is -40 to 150℃.
In the fields of chemical, environmental protection, and pharmaceutical industries, packing towers are widely used as key gas-liquid contact equipment in processes such as gas purification, absorption, distillation, and deodorization. The performance of the packing directly affects the efficiency and service life of the tower equipment. Traditional tower packings’ materials are mostly metal or common plastics, but they often showed poor corrosion resistance and high temperature resistance when facing harsh chemical environments or high-temperature processes. In recent years, PVDF material has been widely used as a packing material in packing towers.
Some years ago, we supplied to a sulfuric acid production plant, mainly for the purification and absorption layers of sulfuric acid towers. Previously, they used metal pall rings, but they need replace metal ring almost every year , which reduces production efficiency seriously. Since purchasing our PVDF 76mm Pall Ring, the absorption rate of acid gas has significantly increased, the maintenance interval of the equipment has been extended to 5 years, and the operating cost has been reduced by about 20%, which saved the costs of replacing materials.