The scheme works as follows: alcohol vapors from the RC are fed into the inter-tube space of the recuperative boiler BC. The bard of the cubic part of BK circulation pump first served in the tube space of the recuperative boiler of BC, which is the dephlegmator of RC, and then in the piping of the boiler steam of BC and forth in cubic part of BC for respectively heating the distillery dreg to the required temperature and for cooling (condensation) of alcohol vapors of RC.