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Phosphate treatments
- Product Description
-
- Commodity name: Phosphate treatments
Application: Scale Prevention: Phosphates react with calcium and magnesium ions, forming insoluble precipitates like calcium phosphate and magnesium phosphate. These precipitates are softer than traditional scale (like calcium carbonate) and can be easily removed through regular blowdown, preventing the buildup of hard scale on boiler surfaces.
Chemical Name:Phosphate treatments
Shape:Liquid solution or solid powder/crystals
Components:
Typically contains sodium phosphate compounds (e.g., trisodium phosphate, disodium phosphate, or sodium hexametaphosphate)
Other names:
Boiler phosphate , Scale inhibitor , Orthophosphate treatment , Sodium phosphate blend
Molecular Formula:
Depends on the type of phosphate used:
Trisodium Phosphate (TSP): Na₃PO₄
Disodium Phosphate (DSP): Na₂HPO₄
Sodium Hexametaphosphate (SHMP): (NaPO₃)₆
Molecular Weight:
Trisodium Phosphate: 163.94 g/mol
Disodium Phosphate: 141.96 g/mol
Sodium Hexametaphosphate: 611.77 g/mol
CAS Number:
Trisodium Phosphate: 7601-54-9
Disodium Phosphate: 7558-79-4
Sodium Hexametaphosphate: 10124-56-8
Application:
Scale Prevention: Phosphates react with calcium and magnesium ions, forming insoluble precipitates like calcium phosphate and magnesium phosphate. These precipitates are softer than traditional scale (like calcium carbonate) and can be easily removed through regular blowdown, preventing the buildup of hard scale on boiler surfaces.
Corrosion Inhibition: By maintaining a slightly alkaline pH, phosphate treatments help to protect the boiler metal from corrosion. They also form a protective layer on the metal surface, further reducing the risk of corrosion.
pH Buffering: Phosphates act as a buffer, helping to stabilize the pH of the boiler water. This is important because fluctuations in pH can lead to corrosion or scale formation.
Sludge Conditioning: The precipitates formed by phosphates are often conditioned by polymers to create a soft, easily removable sludge, rather than a hard, adherent scale.
Common Phosphate Compounds Used: Trisodium Phosphate (TSP): Often used in boilers operating at or below 1000 psig (pounds per square inch gauge), TSP is relatively inexpensive and easy to monitor and control.
Disodium Phosphate: A common component in coordinated phosphate/pH control programs.
Sodium Phosphates: Used to maintain a slightly basic pH in the boiler feedwater system, typically in the range of 8.3-10.5.
Application: Phosphate treatments are typically applied to the boiler feedwater using a chemical feed pump, often controlled by a system that monitors the boiler's pH.
The dosage of phosphate is carefully controlled to maintain the desired levels in the boiler water.
Regular blowdown is essential to remove the suspended sludge and maintain water quality.
Packing:
Liquid: Drums (25 L, 200 L) or IBC tanks (1000 L)
Solid: Bags (25 kg, 50 kg) or bulk containers
Storage:
Store in a cool, dry, and well-ventilated area.
Keep containers tightly sealed to prevent moisture absorption (for solid forms).
Avoid contact with acids or strong oxidizing agents.
Keywords： Phosphate treatments
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