As it has the blow down device which blows the boiler water

摘要

PROBLEM TO BE SOLVED: To easily set an optimum chemical injection concentration and an optimum blow rate in accordance with the operating state of a boiler even if there is large fluctuation in the water quality of boiler feed water caused by the use of condensed water.;SOLUTION: A boiler water quality management device and boiler water quality management method has a condensed water use rate calculating means 27 for calculating a condensed water use rate being a proportion of the condensed water in the boiler feed water from one of a temperature, electric conductivity or the like of the boiler feed water, soft water, or the condensed water, a water quality management value storing means 26 for storing an equation or the like for calculating one of the optimum chemical injection concentration into the boiler feed water, or the optimum blow rate of boiler water, or the like determined by the condensed water use rate on the basis of the water quality of the soft water and the condensed water, a water quality management amount calculating means 28 for calculating one of the optimum chemical injection concentration, the optimum blow rate or the like on the basis of an output from the condensed water use rate calculating means and the equation or the like in the water quality management value storing means, and an output transmitting means 22 for transmitting information based on an output from the water quality management amount calculating means 28 to one of a chemical injection device, a blow-down device 6, or the like.;COPYRIGHT: (C)2009,JPO&INPIT