Remarks:
RXSOL-42-5001-025 Boiler Water treatment specialized is a well - balanced blend for boiler water treatment products, Resulting Multi Functional Boiler Treatment including scale and corrosion control by one shot operation. A one-step treatment to control the formation of rust and scale in low pressure and auxillary boilers with working pressure up to 20 bars.
The stability of the added polymers are very useful for water treatment processes. Such polymers with low molecular weights cannot only inhibit calcium, magnesium, and silica scale in cooling towers and boilers, but also help corrosion control by dispersing iron oxide.
Basic Boiler System Schematic
Below is a summary of problems associated with the common impurities in water and solutions to each problem.
List Of Problems Caused By Impurities In Water
Impurity (Chemical Formula)
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Problems
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Common Chemical Treatment Methods
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Alkalinity (HCO3-, CO32- and CaCO3)
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Carryover of feedwater into steam, produce CO2 in steam leading to formation of carbonic acid (acid attack)
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Neutralizing amines, filming amines, combination of both, and lime-soda.
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Hardness (calcium and magnesium salts, CaCO3)
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Primary source of scale in heat exchange equipment
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Lime softening, phosphate, chelates and polymers
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Iron (Fe3+ and Fe2+)
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Causes boiler and water line deposits
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Phosphate, chelates and polymers
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Oxygen (O2)
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Corrosion of water lines, boiler, return lines, heat exchanger equipments, etc. (oxygen attack)
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Oxygen scavengers, filming amines and deaeration
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pH
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Corrosion occurs when pH drops below 8.5
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pH can be lowered by addition of acids and increased by addition of alkalies
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Hydrogen Sulfide (H2S)
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Corrosion
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Chlorination
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Silica (SiO2)
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Scale in boilers and cooling water systems
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Lime softening
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