Förfarande för att få ut destillat i tillräckligt hett tillstånd i des tillationsanordningar med flera steg

摘要

The invention relates to a process for taking off distillate in a sufficiently hot state in multistage distillation apparatuses (10). At least the amount of heat contained in the condensate of the heating steam of the first column (11a) of a multistage distillation apparatus (10) is recovered and the recovered heat is transmitted with the feed water to the distillate take-off, advantageously into the collection chamber (16) of the distillate. Moreover, the heat contained in the contaminated bottom flow (20) of the last column (11g, 11h) of a multistage distillation apparatus (10) can be recovered and the recovered amount of heat is transferred with the feed water to the distillate take-off, advantageously into the collection chamber (16) of the distillate.