Abstract: The invention relates to a gas-liquid separation device, notably for being installed in the recycle zone of three-phase fluidized reactors. The gas-liquid separation device comprises several separation elements each having an inlet pipe (70) and a succession of at least two bends (71, 72), a first bend (71) situated in the plane (zy), the axis of the first bend (71) forming an angle of orientation ? with respect to the vertical z-axis of between 45° and 315°, and a second bend (72) forming a second angle of orientation p with the first bend (71) of between 1° and 135°. The two first successive bends (71, 72) are separated by a distance D1 of between D/2 and 4D, D being the diameter of the inlet pipe (70). Each separation element comprises a liquid-guiding device (73) positioned at the outlet end of the last bend (72), and with an open section.

Abstract: Liquid-liquid extraction and distillation of a liquid feedstock of at least ethanol, water, acetaldehyde and at least one hydrocarbon-based impurity with a boiling point of between 20° C. and 100° C. at atmospheric pressure, or which generates, with at least one of the compounds of the liquid feedstock and/or with the organic extraction solvent and/or with the aqueous back-washing solvent, an azeotrope and a partition coefficient of between 0.1 and 5 at any point in a back-washing (BW) column of the extraction section, by (a) a liquid-liquid extraction step a washing (W) column, a back-washing (BW) column and at least one injection (F2) of a cut withdrawn in step b), located in the top half of the back-washing column, (b) distillation of an aldehyde and ethanol separation producing at least one aldehyde-rich effluent, one ethanol-rich effluent and one water-rich effluent.

Abstract: Liquid-liquid extraction and distillation of a liquid feedstock of at least ethanol, water, acetaldehyde and at least one hydrocarbon-based impurity with a boiling point of between 20° C. and 100° C. at atmospheric pressure, or which generates, with at least one of the compounds of the liquid feedstock and/or with the organic extraction solvent and/or with the aqueous back-washing solvent, an azeotrope and a partition coefficient of between 0.1 and 5 at any point in a back-washing (BW) column of the extraction section, by (a) a liquid-liquid extraction step a washing (W) column, a back-washing (BW) column and at least one injection (F2) of a cut withdrawn in step b), located in the top half of the back-washing column, (b) a distillation of an aldehyde and ethanol separation producing at least one aldehyde-rich effluent, one ethanol-rich effluent and one water-rich effluent.

Abstract: The invention relates to a system and a method for heat storage and recovery comprising a fixed bed (2) of storage particles. Fixed particle bed (2) comprises an obstacle (4), a flange for example, arranged on the periphery of fixed bed (2) of storage particles, and substantially perpendicular to the circulating flow (3) of said fluid. The invention also relates to a system and a method for energy storage and recovery using the system and the method for heat storage and recovery.