A steam generator or a boiler is defined as a closed vessel in which water is converted into steam by burning of fuel in presence of air at desired temperature, pressure and at desired mass flow rate.

Chemical treatments of water inside the boiler is usually essential and complements external treatment by taking care of any impurities entering the boiler with the feed water (hardness, oxygen, silica, etc.) and eliminates oxygen from the water and provide enough alkalinity to prevent boiler corrosion.

Treatment can constitute the unique treatment when boilers operate at low or moderate pressure, when large amounts of condensed steam are used for feed water, or when good quality raw water is available. The purpose of an internal treatment is to

1. React with any feed-water hardness and prevent it from precipitating on the boiler metal as scale;
2. Condition any suspended matter such as hardness sludge or iron oxide in the boiler and make it non-adherent to the boiler metal;

• Provide anti-foam protection to allow a reasonable concentration of dissolved and suspended solids in the boiler water without foam carry-over

1. Eliminate oxygen from the water and provide enough alkalinity to prevent boiler corrosion

• Water Dispersant
• Oxygen scavenger