Patent ID: 8105543
Filing Date: 2012-01-31
Classification: B01D,F01N,Y02T

Abstract:
1. A structure, for filtering particulate-laden gases, of the honeycomb type and comprising an assembly of adjacent ducts or channels, whose axes are parallel to one another, separated by porous walls, said ducts being sealed off by plugs at one or other of their ends so as to form inlet chambers opening onto a gas entry face and outlet chambers opening onto a gas exit face, in such a way that the gas to be filtered passes through the porous walls, wherein said walls comprise material based on silicon carbide and said walls have: an open porosity of between 30 and 53%; a median pore diameter of between 9 and 20 μm; the average number of open pores on the surface of the walls, the opening area of which is between 20 and 310 μm the ratio of the total opening area of said open pores to said area of the walls is between 0.15 and 0.30.