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AssigneesIfp Energies Nouvelles, Ceramiques Techniques et Industrielles, S.A.
InventorsArnold Lambert, PHILIPPE LEMINTER, THIERRY BECUE, JEAN-PIERRE JOULIN, BRUNO CARTOIXA
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The present invention relates to a method for impregnating a porous body (14) by a suspension (12) containing at least partly particles, said body comprising a multiplicity of channels (16) delimited by porous walls (22) extending from one (18) of the faces to the other (20) face of said body, part of said channels being obstructed at one face and the other part of the channels being obstructed at the other face. According to the invention, the method consists in: making a suspension whose particle size distribution meets a DV90/Dpores ratio below 0.25 and whose viscosity is such that said suspension is brought inside the walls while depositing part of the particles on the surface of the pores of the walls, communicating one (18, 20) of the faces of body (14) with an enclosure (30) containing the suspension, feeding the suspension into the body, exerting a force on the suspension introduced so that said suspension flows through the walls, passing a fluid through the walls.
A method for impregnating a porous body by a suspension containing at least partly particles, said body comprising a multiplicity of channels delimited by porous walls extending from one face of said body to another face of said body, part of said channels being obstructed at the one face and another part of the channels being obstructed at the another face, characterized in that the method comprises:
Installation intended for impregnation of a porous body comprising a multiplicity of channels delimited by porous walls extending from one face of said body to another face of said body, part of said channels being obstructed at the one face to form outlet channels and another part of the channels being obstructed at the another face to form inlet channels, the installation comprising an enclosure containing an impregnation suspension with at least partly particles, said enclosure communicating with the one face of the porous body, characterized in that said installation comprises a device for pressurizing the enclosure with a fluid for forcing the suspension into the porous body through the inlet channels and while maintaining the fluid pressure flowing the fluid into the inlet channels, through the porous body and outlet channels to discharge excess suspension.
Dependencies are inferred from the claim text.