METHOD FOR DISTILLING A MIXTURE OF SUBSTANCES AND DEVICE FOR REALISING THE SAME

摘要

The present invention pertains to the alcohol processing industry and relates to a method that comprises feeding a mixture into a distillation column which is fitted with contact devices for discharging the vapours through the top of said column. This method further comprises boiling a bottom product and supplying the vapour thus formed back into the column. A part of the vapour to be processed using one of said contact devices is then fed back into the vapour flow or liquid flow towards one at least of said devices located upstream relative to the flow direction. In another or in the same embodiment, a part of the vapour is fed back into the liquid flow under the level thereof and towards the same contact device in a place that is located upstream from its discharge relative to the flow direction of said vapour. The vapour feedback is performed without complete condensation thereof. The device for realising this method includes a distillation column that comprises contact devices, wherein one at least of said devices is fitted with one or more systems for feeding the processed vapour. This system is located below the vapour collector in the displacement direction of the main flow. This distillation column is further fitted with a transport system for the vapour to be fed therein.