ceramic membrane

Ceramic membrane is a type of inorganic membrane, which belongs to the solid membrane material in membrane separation technology. It is mainly supported by inorganic ceramic materials such as alumina, zirconia, titanium oxide, and silicon oxide of different specifications, and is coated on the surface and fired at high temperature. Commercialized ceramic membranes typically have a three-layer structure (porous support layer, transition layer, and separation layer), distributed asymmetrically, with pore sizes ranging from 0.8nm to 1 μ m, and filtration accuracies covering microfiltration, ultrafiltration, and nanofiltration levels.
According to the different supports, the configuration of ceramic membranes can be divided into three types: flat plate, tubular, and multi-channel. Ceramic membranes, due to their acid and alkali resistance, high temperature resistance, and chemical stability in extreme environments, as well as the small pore size of commercial ceramic membranes (usually less than 0.2 μ m), can successfully achieve molecular level filtration. Therefore, they are mainly used for filtering and separating liquid and gaseous mixtures, and can replace traditional separation technologies such as centrifugation, evaporation, distillation, and filtration, achieving the goal of improving product quality and reducing production costs. They have broad application prospects in harsh environments such as the petroleum and chemical industries.