The problems of severely exceeding set standard for indices

such as hydrogen conductivety

silicon dioxide

and ferrous iron in condensate

are commonly existing in direct air cooled units having been newly put into operation

making the quality of feed water

boiler water

and steam etc to fall far from the required standards

hence

it is forced to increase the blowdown water from boilers for maintaining the quality of steam and water.For this

corresponding measures with clear aims have been put forward respectively on the basis of features in three different stages

namely capital construction

commission debugging

and after putting into operation

ensuring the quality of steam and water to be set standard in a short time.