High temperature dust collector filter element

摘要

Problem to be solved: to provide a high temperature dust collection ceramic filter element having a high degree of thermal shock, excellent handling property, and having a strength and a structure capable of withstanding vibration, and a degree of freedom of design capable of changing dust removing performance and pressure loss.Preferably, an integrated body comprising one or more heat-resistant inorganic fibers having a heat resistance ofOr, a needle blanket made of niobium treated with the sameOr a ceramic filter element using both of them as substratesThe substrate has a hardened layer formed by an inorganic binder on the surface of the dust collecting surface.The bulk density is 250 to 600 kg / m3.Preferably, the hardness of the surface portion measured by the type C durometer is 45 or more in accordance with JIS K 7312.No selection