Sinopec L-QB 300 Heat Transfer Oil is a premium product line designed for forced or non-forced circulation closed heat transfer systems.

1. Typical Technical Specifications

Formulated from highly refined mineral base oils combined with detergent and anti-oxidation additive systems.

• Maximum Operating Temperature: 290°C – 300°C (in closed systems).
• Kinematic Viscosity (40°C): Approx. 20 – 40 mm²/s (commonly ~32 mm²/s).
• Flash Point (COC): Minimum 180°C - 226°C.
• Pour Point: -15°C (facilitates easy system startup at low temperatures).
• Initial Boiling Point: >280°C (typically reaching 348°C).

2. Practical Applications

Widely used in industrial heating and drying processes:

• Textile & Dyeing Industry: Stenter frames, high-temperature dyeing machines.
• Wood Processing: Board pressing, finished wood drying.
• Food & Pharmaceuticals: Sterilization retorts, agricultural product drying.
• Chemicals: Heating reaction vessels, production of resins and synthetic fibers.

3. Technical Notes for Use

• Avoid Local Overheating: Ensure a high enough flow rate to prevent oil carbonization at the heating surface.
• Moisture Control: Water in the system can cause foaming or sudden pressure spikes leading to explosions. Dehydrate thoroughly before high-temperature operation.
• Closed System: Avoid direct contact between oil and air at high temperatures to prevent rapid oxidation.
• Periodic Inspection: Sample oil to check acid value and carbon residue every 6-12 months to determine replacement time.

4. Key Advantages

• Superior Thermal Stability: Minimizes thermal cracking and carbon deposit formation in pipes.
• High Heat Transfer Efficiency: Excellent specific heat capacity and thermal conductivity optimize energy use.
• Operational Safety: High flash point and low vapor pressure reduce fire risk and evaporation loss.
• Compatibility: Non-corrosive to metals and highly compatible with system seals.

5. Storage and Handling

• Location: Store in covered warehouses, away from direct sunlight and extreme temperatures.
• Sealing: Keep drums tightly sealed to prevent ingress of dust and moisture.
• Safety: Keep away from ignition sources or strong oxidizing agents (nitrates, chlorates).
• Environment: Waste oil must be collected and treated according to hazardous waste regulations; do not discharge into the environment.