PROCESS AND INSTALLATION FOR OBTAINING THE DEUTERIUM DEPLETED WATER

The invention refers to a process and an installation for obtaining the deuterium depleted water which is preferably for food use. The process consists in that water, after purification feeds the continuous isotopic distillation in the presence of a packing on minimum 100 theoretical plates with an efficiency of 8 theoretical plates per meter, the reflux being introduced on the last plate of an upper stripping zone, the number of theoretical plates from the stripping zone and that of the ones from a lower enrichment zone being in a ratio of 10 : 1 and preferably of 9 : 1 , in this latter case resulting 10.5% of the reflux flow as a waste which flows through the enrichment zone with a concentration of under 200 ppm D/(D+H), obtaining 4.5% of the reflux flow deuterium depleted water with a concentration of 20-30 ppm D/(D+H) which is mineralized. The installation in which the process is applied contains a packing consisting of a lower enrichment zone and an upper stripping zone, at the intersection of these zones a and b being connected a thermally insulated isotopic distillation column, between the steam boiler and the column being fitted a level regulating loop (A) placed under the zone in which are injected in the column the vapors provided by the steam boiler, between the vacuum ramp and the top zone (d) and respectively a secondary condenser being connected a vacuum regulation loop (B), the collecting pipe being connected to an intermediate storage tank at which another pipe is connected, fitted with a dosing device, communicating with a mixing pipe provided with static mixing promoters, to which a short pipe is connected provided with another automatic dosing device, connected to a storage tank for a mineralizing additive and a final evacuation pipe connected to a UV sterilizing subsystem. La présente invention concerne un procédé et une installation pour obtenir de l'eau appauvrie en deutérium destinée de préférence à la consommation. Le procédé comprend les étapes suivantes: de l'eau, après purification, alimente la distillation isotopique continue en la présence d'un empilement de minimum 100 plaques théoriques avec une efficacité de 8 plaques théoriques par mètre, le reflux étant introduit sur la dernière plaque d'une zone de décapage supérieure, le rapport entre le nombre de plaques théoriques de la zone de décapage et le nombre de plaques théoriques d'une zone d'enrichissement inférieure, valant 10: 1 et de préférence 9: 1, ce dernier cas conduisa