🔥 Maxtop Heat transfer fluid Coking Prevention Solution: Ensure Safety & Long-Term Efficiency

In high-temperature heat transfer systems, Heat transfer fluid coking is a common but serious issue. It reduces heat transfer efficiency, causes local overheating, and may even damage heating coils or equipment. Maxtop provides a comprehensive anti-coking solution that helps extend Heat transfer fluid life and improve operational safety.

❓ Why Does Heat transfer fluid Coke?

1. Excessive Film Temperature Increases Coking Risk

If the fluid velocity is too low or the heating intensity is too high, an insulating oil film forms on the pipe wall. This film increases thermal resistance and raises the local film temperature beyond the oil’s stability limit, leading to thermal cracking and carbon deposits on the heat transfer surfaces.

2. Oxidation Reactions Produce Coke Precursors

Heat transfer fluid inevitably contacts oxygen during use. Oxidation reactions occur, forming oxidation products, sludge, resins, and eventually hard coke. These by-products thicken and degrade the oil, accelerating fouling.

3. Catalytic Aging with Metal Ions

At high temperatures, metal ions in the system can catalyze oil degradation. This leads to free radical chain reactions that break hydrocarbon bonds, initiating coking. These free radicals polymerize into large molecules, resulting in sludge and eventual solid coke formation.

⚠️ Key Factors That Promote Coking

✅ Maxtop Heat transfer fluid Coking Prevention Strategy

🛢 1. Use High-Quality, Anti-Coking Heat transfer fluid

Maxtop recommends choosing premium thermal oils with proven anti-coking performance—not low-cost, non-standard oils.

Maxtop Thermal Oil Advantages:

• High maximum film temperature resistance (e.g., up to 340°C or more)

• Excellent oxidation and thermal stability

• Low tendency to form carbon residue

🔧 2. Control System Parameters

• Maintain adequate flow rates:

  • ≥1.5 m/s in convection sections

  • 2–4 m/s in radiant sections to prevent hot spots

• Avoid overheating:

  • Keep operating temperature at least 30°C below the oil’s max film temperature

• Ensure system tightness:

  • Prevent air ingress to reduce oxidation risk

🧪 3. Annual Heat transfer fluid Testing

Maxtop recommends regular oil condition monitoring:

• Acid number

• Carbon residue

• Viscosity changes

• Flash point drop

• Soluble/insoluble oxidation by-products

We offer oil sample kits and partner with certified labs to deliver accurate analysis and maintenance recommendations.

📘 4. Follow Proper Operating Procedures

• Gradually heat up and cool down the system

• Keep expansion tank temperature below critical limits

• Regularly clean or replace filters

• Avoid frequent system shutdowns that cause thermal shock

🌟 Why Choose Maxtop Heat transfer fluid?

• Compliant with international standards

• Long service life (5–8 years under normal conditions)

• Strong resistance to oxidation and fouling

• Full technical support, including system audits and staff training

📌 Ideal Applications

Maxtop Heat transfer fluid is widely used in:

• Chemical, pharmaceutical, and food process heating

• Asphalt, resin, plastic, and adhesive production

• Textile drying, printing, and coating systems

• Heat transfer systems in metallurgy and building materials

• Heat oil furnaces, air heaters, and waste heat recovery units