CIRCULATION FLOW LAYER BOILER AND STARTING METHOD OF CIRCULATION FLOW LAYER BOILER

摘要

PROBLEM TO BE SOLVED: To provide a circulation flow layer boiler capable of lowering the temperature of exhaust gas at the time of starting.SOLUTION: A circulation flow layer boiler 100 including an economizer 10 capable of recovering heat of exhaust gas by performing heat exchange between exhaust gas discharged from a furnace 1 and boiler supply water, includes: a boiler supply water supply pipe 22 supplying boiler supply water to the economizer 10; a boiler supply water supply pump 24 connected to the boiler supply water supply pipe 22 and pumping boiler supply water; and a boiler supply water recovery pipe 28 recovering boiler supply water discharged from the economizer 10.