| 摘要 |
PROBLEM TO BE SOLVED: To provide a drain recovery system which effectively recovers boiler water and energy.SOLUTION: A drain recovery system includes: a cascade tank 5 sealed from the atmosphere; a drain cooler 6 which is open to the atmosphere; a drain introduction pipe 7 which leads drain discharged from a heat exchanger 4 to the cascade tank 5; a steam discharge pipe 9 which discharges flush steam occurring from the drain from the cascade tank 5 and leads the flush steam to the drain cooler 6; and a condensate recovery pipe 11 which leads water generated by the flush steam being condensed in the drain cooler 6 to the cascade tank 5. |
