Retrofits and Analysis of Economizer of No.7 Boiler in Oyujiang Power Plant

The basic erasion situations of the economizer of No. 7 boiler are introduced, and the reasons of the erasion are analyzed. Then, two retrofits of the economizer for improving the anti-erasion performance are introduced and analyzed. Finally, the experimental results measured in the boiler after the retrofit are introduced and analyzed in detail. The results show that the retrofits of the economizer based on fin-tube are successful.