Method and device for treating water

Details Method and device for treating water Method and device for treating water

C - Chemistry, Metallurgy

02

F

C02F 1/04 (2006.01) B01D 1/22 (2006.01) B01D 1/26 (2006.01)

Patent

CA 2525311

Purified water for special purposes is produced using a falling-film multieffect evaporator. From the feed water, each effect produces a steam phase and a water phase. The steam phase is used for heating in the subsequent evaporating step, whereby the steam phase condenses to product water, and the water phase becomes feed water for the subsequent evaporation step. According to the invention, the product water may be wholly or partly recycled to the initial feed water, allowing process startup and sterilisation of the plant without conducting hot product water to the drain.

on produit de l'eau purifiée à des fins spéciales au moyen d'un évaporateur multieffet de film retombant. A partir de l'eau d'alimentation, chaque effet produit une phase vapeur et une phase liquide. La phase vapeur est utilisée pour chauffer dans l'étape d'évaporation suivante, cette phase vapeur se condensant pour produire de l'eau et, la phase liquide devient l'eau d'alimentation pour l'étape d'évaporation suivante. selon cette invention, l'eau peut être complètement ou partiellement recyclée en eau d'alimentation initiale, ce qui permet un démarrage de processus et une stérilisation de l'équipement sans envoi d'eau chaude dans la conduite.

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