Reactor, useful for dissolving solid in fluid, comprises tank and cage that is connected to driving mechanism in rotation such that each permeable portion is crossed by fluid flow alternatively in direction under effect of rotation of cage

• Main Authors: BELLEFLEUR ALEXANDRE, GISQUET PASCAL, CASTILLO ALAIN, BENEZETH PASCALE
• Format: Patent
• Language: English; French
• Published: 12.04.2013
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PHYSICS; TESTING; THEIR RELEVANT APPARATUS; TRANSPORTING

The reactor comprises a tank (2) provided with a fluid inlet (3) and a fluid outlet (4), and a cage (15) adapted to receive and contain a solid in divided form. The cage presents a permeable peripheral wall (15a) crossed by the fluid flow, and is placed such that a portion of the wall intercepts a trajectory of flow. The cage is connected to a driving mechanism in rotation on 180[deg] around an axis that is not parallel with the trajectory of flow such that each permeable portion of the wall is crossed by the fluid flow alternatively in a direction under an effect of the rotation of the cage. The reactor comprises a tank (2) provided with a fluid inlet (3) and a fluid outlet (4), where the inlet and the outlet determine a predetermined direction of a fluid flow, and a cage (15) adapted to receive and contain a solid in divided form. The cage has a permeable peripheral wall (15a) to be crossed by the fluid flow and to retain the solid, and is placed such that a portion of the wall intercepts a trajectory of flow. The cage is connected to a driving mechanism in rotation on 180[deg] around an axis that is not parallel with the trajectory of flow such that each permeable portion of the wall is crossed by the fluid flow alternatively in a direction under an effect of the rotation of the cage. The cage has a cylindrical form and comprises openings regularly distributed on the peripheral wall and windows sealed by a permeable membrane. The peripheral wall includes two coaxial sleeves that is encased one on the other, and immobilizes the permeable membrane between the sleeves. The windows of the two sleeves are radially aligned and have same angular width. The windows are diametrically opposite. One of bases of the cage is closed by a stopper comprising a fixing unit to drive a stem of an agitator of the tank. The stopper comprises an axial boring closed by a permeable disk. An independent claim is included for a method for dissolving a solid in a fluid. L'invention concerne un réacteur (1) pour la dissolution d'un solide, comportant une cuve (2) fermée munie d'une entrée (3) et d'une sortie (4) de fluide, l'entrée et la sortie de fluide déterminant entre elles une trajectoire (F) du flux de fluide, caractérisé en ce que le réacteur comprend à l'intérieur de la cuve, une cage (15) adaptée pour recevoir et contenir un solide sous forme divisée, présentant une paroi (15a) périphérique perméable adaptée pour qu'au moins une portion perméable soit traversée par le flux de fluide, ladite cage étant reliée à un dispositif d'entrainement (13, 14) en rotation sur au moins 180° autour d'un axe (X) non parallèle à la trajectoire du flux de telle sorte que chaque portion perméable de la paroi puisse être traversée par le flux de fluide alternativement dans un sens et dans l'autre sous l'effet de la rotation. L'invention concerne également un procédé de dissolution utilisant un tel réacteur.