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Improved Reliability of High-AVT (High-pH Water Treatment) Application to Combined Cycle Plants

Generally in the water treatment of combined cycle plants, ammonia and hydrazine are used in the feedwater system and phosphates are used in the boiler system. However, in Mexico, the Tuxpan No. 2 and No. 5 power plants have adopted “High-AVT (high-pH water treatment),” in which ammonia is used to set the pH of feedwater higher than the conventional level, requiring no phosphates in the boiler system. In response to such good operational results, MhI introduced high-AVT as an option for the water treatment of combined cycle plants.

Revision Date:  12/31/2013

Tags:  221112 - Fossil Fuel 化石燃料, Mitsubishi Heavy Industries, Ammonia, Treatment Chemicals, Phosphate, Boiler Feedwater Treatment, Water Treatment, Mexico