Heat recovery equipment

#1. Field of the Invention

#The present invention relates to a technology for recovering heat of flue gas from a boiler.

#2. Description of the Related Art

#FIG. 1 is a schematic diagram of heat recovery equipment according to a first embodiment of the present invention;

#FIG. 2 is a schematic diagram of another heat recovery equipment according to the first embodiment;

#FIG. 3 is a schematic diagram of still another heat recovery equipment according to the first embodiment;

#Exemplary embodiments of the present invention will be described below with reference to accompanying drawings. The present invention is not limited to these embodiments.

#FIG. 1 is a schematic of heat recovery equipment according to a first embodiment of the present invention.

#The heat recovery equipment, which recovers heat from flue gas G, includes a power generation plant 10 that drives a steam turbine 13 by superheated steam 12 from a boiler 11, and a flue gas treatment line 20 that treats the flue gas G from the boiler 11. The heat recovery equipment also includes a heat extractor unit 31 and a condensed water heater 32. The heat extractor unit 31 is provided between an air preheater 21 and a dry ESP 22 that are provided on the flue gas treatment line 20. The condensed water heater 32 is interposed between a condenser 15, which is provided on a condensed water line of the power generation plant 10, and a low-pressure feedwater heater 16, and heats condensed water by heat recovered by the heat extractor unit 31. The heat recovery equipment includes a desulfurization unit 23 that removes sulfur oxides in the flue gas, and a stack 24.