7 Key Points to Extend the Service Life of Heat Transfer Oil Furnace:
1. When shutting down, generally stop the hot oil pump only after the heat transfer oil temperature drops below 70°C.
2. In case of sudden power outage, immediately extinguish the fire and then operate according to the operating procedures; otherwise, the furnace tubes may be burned out, causing huge losses.
3. Choose the heat transfer oil reasonably according to the type of boiler. Avoid using it at excessive temperatures. Never try to save money by buying substandard oil, and do not mix different heat transfer oils, otherwise the consequences will be serious.
4. After six months of boiler use, the heat transfer oil must be sampled and tested according to the instructions. If problems are found, replace it with new heat transfer oil immediately. However, note that different types of heat transfer oil must not be mixed.
5. Prevent oxidation of the heat transfer oil. Strictly avoid contact with air when the heat transfer oil temperature is above 50°C; this can cause the oil to crack at an alarmingly fast rate, with very serious consequences. Commissioning personnel must close the vent valve on the auxiliary exhaust pipe after normal operation, and remember this.
6. Strictly control the circulation flow rate of the heat transfer oil to not less than 1.5 m/s. During use, if the temperature difference between the inlet and outlet is too large, the original design requirements are disrupted, preventing the oil from maintaining its original circulation state. The boundary layer thickens, thermal resistance increases, causing the furnace wall temperature to exceed the oil film temperature, leading to carbon deposition, cracking, polymerization, coking, or even burning through the furnace tubes.
7. Strictly avoid arbitrary overtemperature operation, increasing air volume, or adding more fuel, which keeps the heat transfer oil in an overtemperature state. This can cause cracking and coking of the oil, and over time, major accidents may occur.
