Importance

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Abstract

Provided are a turbine facility, in which iron oxide particle scale that adheres to inner surfaces of boiler tubes and impedes heat transfer can be efficiently removed from heater drainage water; and a water treatment method for heater drainage water in the turbine facility. The turbine facility includes a boiler 9, steam turbines 12 and 16, a condenser 1, feedwater heaters 5 and 8 which are interposed in water supply lines 4 and 6 that supply condensate condensed by the condenser 1 to the boiler 9, and in which part of steam supplied from the steam turbine 12 to a repeater is extracted as extraction steam, and the feedwater is heated using the extraction steam, and a filtration device 19 in which heater drainage water discharged from the low-pressure feedwater heater 5 is filtered and supplied to the water supply system for recovery. The filtration device 19 includes a filter having a pore size of 1 to 5 μm.

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First Claim