CRM tubular ceramic membrane is made of high-purity Oxide like Al2O3, ZrO2, TiO2 and other composite materials, using a patented formula. The material is mixed, extruded and burned in furnace under very high temperature(> 1700℃). The appearance of ceramic membrane is tubular multi-channel, formed in an asymmetric porous multilayer structure. From the outside to the inside, it is porous support base, intermediate layer, active membrane layers. By using special recipe, TANGENT can make very fine active layer with pore size down to nanometer or even molecular level. This will bring possibility for fine filtration in solid-liquid separation or liquid-liquid separation. The operation principle of CRM ceramic membrane is dynamic “cross-flow filtration” by internal pressure from Inside to Outside. The raw liquid is pumped into the membrane element at a high linear speed. Water, dissolved components, solvent passes through the membrane layer, forming a clear and transparent filtrate called Permeate. Insoluble suspended matter, bacteria, oil or macromolecular components are rejected by the active membrane layer, forming a concentrated liquid called Retentate or Concentrate. The retentate flows out from the other end of the channel, and circulate inside the element. Different from traditional filtration methods such as filter press or centrifuges, people can control the filtration precision by using ceramic membrane with different pore sizes, which can achieve extremely accurate filtration precision. For industrial applications, the ultra high filtration precision in the clarification step will bring big benefit for post treatment after ceramic membrane. What’s more, CRM ceramic membranes are made of highly stable oxides which have excellent chemical stability. Ceramic membrane is a good option for ultra-high precision separation of complex fluid under harsh condition in process industry.
Since the fluid flows at a high linear speed on the surface of the microporous membrane layer, it is not easy to accumulate on the surface of the filter layer to form a thick filter cake. Stable filtration flux can keep for a long time because of the low filtration resistance and easy regeneration. Ceramic membranes have been proved to be a reliable economical green separation technology for modern industries.
TANGENT has more than 20 years of experience on membrane technology. TANGENT produces hundreds of thousands of ceramic membranes with different characteristics according to different applications, such as high abrasive series, high hydrocarbon removal series, low cost series, low pore size series, etc. With so some many unique advantages, ceramic membranes have been widely and successfully applied in food, medicine, chemical industry and environmental protection and so on. More and more new applications and processes based on ceramic membrane technology are believed to appear soon. TANGENT company can also customize and develop special ceramic membranes and process design according to the user's special demand. All parties can work together to combine the upstream & downstream process with membrane technology, creating more benefit and more value!
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