The water sample from the waste heat boiler is turning red! ! !
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I forgot to take photos. It’s a 28bar membrane-type water-cooled wall boiler. Recently, the boiler water sampled has been colored, light red in color; the F3+ concentration is around 1.5 ppm. The feed water is of good quality. The boiler has been in use for 10 years, and during a major maintenance check, it was found that the drum inside was somewhat reddish. Currently, a high level of blowdown is being used. I would appreciate advice from experts on what measures should be taken
During the major repair, the thickness of the furnace tube walls was found to be fine
There are too many iron ions; add chemicals and increase the discharge flow rate
Increase wastewater discharge, enhance continuous and scheduled discharges
The inner wall is estimated to be covered with uneven pits, and the boiler water is light red with brown sediment. In that case, it needs to be cleaned again and pre-coated!
Are there any other analyses for the boiler water besides iron? pH, dissolved oxygen, and so on! Send it out and take a look. Corrosion does not yield significant results in short-term thickness measurement
Is it possible for oxygen corrosion to occur in the water inlet pipes?
The color of rust caused by corrosion; increase waste discharge