How to choose ceramic candle filter tube materials?

Under high temperature conditions, due to the large changes in exhaust gas viscosity, the humidity is greatly reduced, the condensation of fine particles is greatly reduced, and particle separation is more difficult. At present, fiber filtration, electrostatic dust removal, bag dust removal and other technologies have been maturely applied. However, there are more or less problems in the application process of these technologies. For example, the bag dust collector cannot withstand the high temperature of the exhaust gas, and the electrostatic precipitator has problems such as high one-time investment, large floor space and insulation. Therefore, smoke purification technology under high temperature conditions is a difficult technology in chemical engineering that needs to be developed.
For ceramic fiber pipes, due to their low cost, low operating costs, high temperature resistance, and long service life, they are one of the more suitable and promising methods for treating various waste gases. With the development of high-temperature flue gas purification technology, ceramic materials have been widely used in the field of dust removal. We use ceramic fiber as filter material, mix it with inorganic binder, water, etc., and use vacuum filtration method to filtrate and shape it. Ceramic fiber tubes are mainly composed of alumina ceramic fibers and wollastonite fiber coating surfaces.
Because wollastonite has a unique needle-like structure, it is a better filling material and has the characteristics of improving impact strength, enhancing fluidity, increasing tensile strength, impact strength, linear stretch and mold shrinkage. Using silica fume stone as a surface filter layer. In addition, the materials were also studied in terms of process preparation, material structure and filtration performance.