December 2000

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HP Water Management: Basics of boilwater chemical treatment

Water treatment for steam-generating systems has two primary objectives - control deposition and minimize corrosion (Table 1). Deposition and corrosion occur throughout the entire steam..

Huchler, L. A., MarTech Systems, Inc.

Water treatment for steam-generating systems has two primary objectives - control deposition and minimize corrosion (Table 1). Deposition and corrosion occur throughout the entire steam generating system. Boiler tubes with the highest heat transfer (e.g., the generating bank) are the most common locations for contaminant deposition from feedwater and returning condensate. Corrosion can occur wherever water containing a corrosive agent (dissolved oxygen, acidic or alkaline chemical species) contacts metal surfaces during boiler operation or storage. Another type of corrosion occurs under deposits that have formed on heat-

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