FIELD: heat power engineering. SUBSTANCE: invention relates to heat and power stations provided with equipment for delivery water treatment and more particularly to a known system containing evaporator including at least one feed-water preheater and one evaporation step connected, with regard to secondary steam, to feed- water preheater in return and direct delivery water main; feed-water preheater connected with turbine intake; and pipelines for withdrawing distillate and feeding heat scheme. According to invention, system is provided with vacuum deaerator and deaerator tank connected to the former. System has additional pump, and deaerator tank is separated into two cavities, one being connected with deaerator drain pipe and the other with return delivery water main and with feed-water preheater belonging to the last evaporation step, which in turn is connected with heat scheme feed pipeline. EFFECT: reduced process water consumption. 1 dwg
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