Abstract: Certain embodiments of the invention relate to a spacer element for a heat exchanger of the brazed plate and fin type, intended to be fitted between a first plate and a second plate of the exchanger, said spacer element comprising at least a first assembly portion configured to be assembled with the first plate and comprising a first pair of opposite surfaces, one of the surfaces of the first pair being oriented toward the first plate and the other of the surfaces of the first pair being oriented toward the second plate when the spacer element is in the fitted state, several fins or corrugation legs extending from said first assembly portion so as to delimit, when the spacer element is in the fitted state, a plurality of channels for the flow of a first fluid, and at least one surface texturing in the form of a porous structure or of reliefs formed on the surface of the spacer element, at least one fin or corrugation leg exhibiting said surface texturing.

Abstract: A single-component exchanger permitting a transfer of heat between a first fluid and a second fluid is provided. The heat exchanger includes, from bottom to top in the direction of manufacture; at least two distribution regions, at least two collection regions, at least two inlet connectors adjoining the at least two distribution regions and at least two outlet connectors adjoining the at least two collection regions. The heat exchanger also includes at least one inlet located on each inlet connector, at least one outlet located on each outlet connector, and an exchange region permitting a transfer of heat between the channels of the first fluid and the channels of the second fluid. Each connector includes supports in the inner upper part thereof.

Abstract: A process for the deposition of a catalyst in an exchanger-reactor including an inlet, an outlet, and microchannels, the microchannels including an internal surface, the process including positioning the exchanger-reactor in a vertical position, wherein the inlet and the outlet are in a plane perpendicular to a horizontal plane and, wherein the inlet and outlet are below the microchannels, introducing a catalyst in suspension into the exchanger-reactor via the inlet by means of a pump, filling the exchanger-reactor with the catalyst in suspension at a rate of between 5 and 20 ml/min, and emptying the exchanger-reactor, thereby depositing at least a portion of the catalyst on the internal surface.

Abstract: The invention relates to a heat exchanger-reactor or heat exchanger including at least three stages with on each stage at least one area of millimetric channels that promote the exchange of heat and at least one distribution area upstream and/or downstream of the area of millimetric channels. The invention is characterized in that: said heat exchanger-reactor or heat exchanger is a component devoid of assembly interfaces between the various stages; and the channels in the area of millimetric channels are separated by walls less than 3 mm thick.

Abstract: A process to synthesize a catalyst performing Water-Gas shift reaction at a temperature more than 300° C. using a precursor having general formula [(Cu, Zn)1?x (Al, M)x (OH)2]x+ (An?x/n).kH2O with M=Al, La, Ga or In, A=CO3, 0.33<x<0.5, 1<n<3.

Abstract: Process for treating a catalytic reactor comprising a catalyst bed that includes the successive steps of passivating the catalytic reactor leading to the production of an oxidation layer at the surface of the active sites of the catalyst bed, opening the reactor, and skimming at least one portion of the catalyst bed.