Thermal oil heating precautions
The temperature rise is mainly to gradually and gradually increase the working temperature of the heat-conducting oil to the production process temperature under the allowable temperature to meet the production requirements. The heating must be performed after the dehydration of the cooking oil is completed. With the continuous exhaustion of the gas in the heat transfer oil system and the continuous replenishment of the heat transfer oil, the working pressure of the hot oil circulation pump and the pressure difference between the inlet and outlet of the heating furnace, the heat transfer oil flow tends to be normal and stable. Under this premise, the working temperature of the heat transfer oil can be gradually increased. The first heating rate should not be too fast, it should be carried out according to the heating curve (the heating rate is about 20 ° C / hour). During the heating process, it is necessary to patrol and check whether the relevant equipment and its process system are in good working condition, and check whether the vibration, noise and lubrication are normal. During the heating process, all relevant equipment and pipeline valves should be fully inspected for leaks and leaks. During the heating process, it is necessary to comprehensively check whether the support of various related equipment, process systems and pipelines is stable. During the heating process, the thermal expansion of all relevant equipment and its pipelines should be fully checked. During the heating process, it is necessary to check whether the process parameters such as temperature, temperature difference, pressure, pressure difference and flow rate are normal and stable. The temperature difference should not be too large, and the pressure difference should not be too small. During the heating process, all electrical instruments and their control and alarm devices should be checked for correct operation. The heating furnace debugging operation record should be made at any time during the heating process.