Boiler Scale Prevention

What is a Scale Prevention Chemical?
Scale prevention steam boiler chemicals are used to prevent hardness scaling on the boiler tubes. Scale prevention chemicals are used to tie up any hardness that bypasses the softener. Typically, phosphates and polymers are used to prevent boiler scale.

What is a Scale Prevention Chemical?
Boiler chemicals are phosphates and polymers. The products are either come in a single component or in a multi-blend at various dilutions.

What is the recommended residual rate?
Keep a minimum of 7 ppm of phosphate residual in the boiler water per every part of hardness or keep 15 ppm of polymer for every ppm of hardness. More residual provides addition scaling protection against hardness upsets from process changes or softener malfunctions. A phosphate test kit can be used to monitor the phosphate residual.

How do you feed Phosphates / Polymers?
Feed the polymer or phosphate directly to the feedwater pipe after the feed water pump. If you can not feed it to the feed water pipe, the feed water tank will work. The phosphate/polymer should feed when the boiler calls for water.

How do you monitor Phosphates / Polymers?
Simple titration tests can be performed to confirm residuals.

Any other notes on Phosphates / Polymers?
Use a blended product of phosphate and polymer. Testing for polymer residuals is difficult. It is much easier using a phosphate / polymer blended product and monitoring just the phosphate.

Which Scale Prevention Chemical should I use?

• ChemWorld 1595 is designed for phosphate precipitating internal treatment programs. ChemWorld 1595 provides a high concentration of phosphate and a low concentration of a carboxylated organic polymer designed for this application. This product is ideal for soft water conditions and is the most popular chemical selection. ChemWorld 1595 is typically used in systems with softened make-up water.
• ChemWorld 1244 is All Polymer Internal Treatment with a molybdate tracer. ChemWorld 1244 uses a carboxylated organic copolymer designed for low and high heat transfer boilers. ChemWorld 1244 can be used in All Polymer programs or as a supplement to other products when higher polymer levels are needed. This product is ideal for soft water conditions. The product is normally used in combination with other treatment chemicals to provide a complete program.
• ChemWorld 1334 is an all polymer internal treatment product which uses a carboxylated organic copolymer designed for low and high heat transfer boilers. This product is ideal for soft water conditions. ChemWorld 1334 can be used in All Polymer programs or as a supplement to other products when higher polymer levels are needed. The product is normally used in combination with other treatment chemicals to provide a complete program.
• ChemWorld 1236 is a liquid ethylenediaminetetracetate (EDTA) and polymer blend designed for chelant/polymer internal treatment programs. This product is ideal for hard water conditions. ChemWorld 1236 is designed for application in systems with a feedwater total hardness of 0.8 to 2.0 ppm.
• ChemWorld 1236m is a liquid ethylenediaminetetracetate (EDTA) and polymer blend designed for chelant/polymer internal treatment programs with a molybdate tracer for ease of resdiual detection. This product is ideal for hard water conditions. ChemWorld 1236m is designed for application in systems with a feedwater total hardness of 0.8 to 2.0 ppm.
• ChemWorld 1736 is a liquid ethylenediaminetetracetate (EDTA) and polymer blend designed for chelant/polymer internal treatment programs. This product is ideal for hard water conditions. ChemWorld 1736 is designed for application in systems with a feedwater total hardness of 0.8 to 2.0 ppm.
• ChemWorld 1274 is All Organic Internal treatment used in boilers with potential for hardness and/or iron deposition. This product is ideal for hard water conditions. ChemWorld 1274 provides the most effective combination of deposit control agents specifically designed for this application. This product will also function effectively to remove deposits over a period of time.
• ChemWorld 1644 is All Polymer Internal Treatment with molybdate tracer and alkalinity builder. This product is ideal for low alkalinity waters. ChemWorld 1644 uses a carboxylated organic copolymer designed for low and high heat transfer boilers. ChemWorld 1644 can be used in All Polymer programs or as a supplement to other products when higher polymer levels are needed. The product is normally used in combination with other treatment chemicals to provide a complete program.
• ChemWorld 1744 is All Polymer Internal Treatment with molybdate tracer and alkalinity builder. This product is ideal for low alkalinity waters. ChemWorld 1744 uses a carboxylated organic copolymer designed for low and high heat transfer boilers. ChemWorld 1744 can be used in All Polymer programs or as a supplement to other products when higher polymer levels are needed. The product is normally used in combination with other treatment chemicals to provide a complete program.