Performance Evaluation of Three Scale and Corrosion Inhibitors in Simulated Cooling Water in a Power Plant

Performance evaluation of three scale and corrosion inhibitors in simulated cooling water according to generating set in a power plant was presented in this paper. The scale and corrosion inhibition performance of the inhibitors were conducted by the methods of the static scale inhibition and rotary coupon tests respectively. The results indicated that 316L stainless steel has low uniform corrosion rate ranging from 0.0042 to 0.0048 mm/a in the simulated cooling water both with and without inhibitors. The drops of hardness in water with No.1 and No.3 inhibitors were slight, and these two inhibitors were of good scale inhibition while No.2 was poor.