Saint-gobain Centre De Recherches Et D'etudes Europeen

Fabiano Rodrigues

Christian Claude His

Ronald Neufert

Thibault Champion

Gilles Rossiquet

Jérôme Sant

Malte Moeller

Laurie San-Miguel

Adrien Vincent

David Lechevalier

A filter for the filtration of a fluid, such as a liquid, includes or is composed of a support element made of a porous ceramic material, the element exhibiting a tubular or parallelepipedal shape delimited by an external surface and including, in its internal portion, a set of adjacent channels with axes parallel to one another and separated from one another by walls of the porous inorganic material, in which at least a portion of the channels and/or at least a portion of the external surface are covered with a porous separating membrane layer, wherein the separating membrane layer is made of a material essentially composed of silicon carbide (SiC), and the content by weight of elemental nitrogen of the layer constituting the porous separating membrane layer is between 0.1% and 2%.

Filters comprising SiC membranes incorporating nitrogen

A tangential filter for filtration of a fluid includes a support element, wherein, along a transverse plane perpendicular to the central axis of the support element a) the support element includes in its central portion only inner channels that do not share a common wall with its outer surface, the inner channels having a substantially equivalent hydraulic diameter, b) the support element includes peripheral channels, including at least first and second adjacent peripheral channels, each of the two channels sharing a common wall with the outer surface, c) the ratio of the hydraulic diameter of the first channel to the hydraulic diameter of the second channel is greater than or equal to 1.1, d) the number of peripheral first channels is greater than or equal to the number of peripheral second channels, e) the second channel has a hydraulic diameter substantially identical to the hydraulic diameter of the inner channels.

Tangential filter with a supporting element including a set of channels

A sintered refractory product having the form of a block and consisting of a granulate formed by all the grains having a size larger than 100 &#x3bc;m, referred to as 'coarse grains', and a matrix binding the coarse grains and consisting of the grains having a size smaller than or equal to 100 &#x3bc;m, the granulate representing between 45% and 90% by mass of the product, the product having a composition such that, in a mass percentage based on the oxides: AlO&#x3e;80%, SiO&#x3c;15%, NaO&#x3c;0.15%, FeO&#x3c;0.05%, CaO&#x3c;0.1%, the other oxides forming the remainder up to 100%, and the NaO content in the matrix being greater than 0.010%, in a mass percentage based on the mass of the product.

Product having a high alumina content

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Roussillon, France

Fabiano Rodrigues