HEAT-RESISTANT FILTER

摘要

A heat-resistant filter suitable for catching particulates contained in a high-temperature engine exhaust gas and capable of being regenerated by removing by burning the particulates thus caught. An object of the present invention is to provide a heat-resistant filter capable of controlling a rise in back pressure to be low even when the exhaust gas is treated for a long period of time, capable of heating and removing by burning deposited matters using an electric heating element, and capable of withstanding corrosion under an acid atmosphere of high temperature. A filter layer (6), in which heat-resistant fibers are accumulated at random, is interposed between air-permeable partition walls (4, 5). A first air-permeable partition wall (4) disposed on the upstream side of a passing direction of a fluid to be filtered out of the both air-permeable partition walls (4, 5) is formed of a face structure consisting of nonconductive heat-resistant fibers.