why not maintain Ph 7.0 in Boiler because 7 Ph is not acidic and not basic.

Answer Posted / alok bhattacharya

We need to mix scavenger in feed water in order to make it oxygen free which helps boiler from corrosion. Phosphate dozing is primarily done for this purpose and this raises PH value and usually maintained around 9. Moreover phosphate dozing helps to make magnetite layer which inhibit corrosion.
Acidic water is prohibitive in boiler for above reason, i.e.
Ph below 7.

Thanks

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