In order to improve the condenser steel pipe heat transfer effect

to deal with the condenser heat exchange steel pipe fouling and depositing sediment caused by the turbidity of the closed circulating cooling water of a 660 MW power plant. The main method adopted is the process of adding a certain amount of sulfamic acid

stripping agent + corrosion inhibitor from the inlet of the circulating water side through a temporary dosing system during low unit load

and performing online chemical cleaning of the one-side splitting of the condenser. The on-line cindenser single-side splitting chemical cleaning takes short time

low chemical consumption and obvious effect. Comparative analysis of the effect after cleaning

the average vacuum of the entire condenser after cleaning increased by 1.715 kPa

the average end difference reduced by 3 ℃

the unit coal consumption reduced obviously

also the unit load connection capacity is improved

the unit efficiency is greatly improved

and the economic benefit is significant.