CIRCUIT FOR HEATING AIR AND WATER IN HIGH-PRESSURE STEAM BOILERS

摘要

FIELD: heat power engineering. ^ SUBSTANCE: circuit comprises deaerator and high-pressure heater that are connected in series through the first stage of the main economizer and condensate plant of the boiler with the second stage of the boiler economizer. The lines that connect the high-pressure heater with the first stage of the main economizer of the boiler are provided with the additional stage of the water high-pressure economizer that is built in the water path to define a closing surface for heating of the boiler. The additional stage of the high-pressure water economizer is directly connected with the first stage of the main economizer and with the water-air heat exchanger mounted upstream of it. The water-air heat exchanger is connected with the high-pressure heater. ^ EFFECT: enhanced reliability. ^ 4 cl, 1 dwg