Operation of thermal oil heater

Oil or gas heat transfer boilers that use thermal oil as a heat carrier are also called thermal oil heaters. The system should be equipped with an expansion tank, oil storage tank, safety components, measuring instruments, and control devices. When the thermal oil is put into operation, start the circulating oil pump during the initial operation phase. Allow it to run for half an hour before ignition and heating. During operation, the temperature should be increased slowly, approximately 20°C per hour. Once the temperature reaches 180-200°C, it should be maintained at this temperature for a period of time before normal operation.

During operation, careful inspection should be carried out to prevent the leakage of water, acids, alkalis, and low-boiling-point substances into the system. The system should be equipped with a filter to prevent the ingress of various impurities and ensure the purity of the oil. After six months of use, the oil should be analyzed. If poor heat transfer performance or other abnormalities are observed after extended use, the oil should be analyzed. The oil should be added or replaced based on the analysis results. The recommended standards are: Alkaline Carbon No. 1.0%, Acid Value No. 0.5 mgK(OH)/g, Flash Point Change No. 20%, and Viscosity Change No. 10%. If any of these values are exceeded, the oil should be replaced.

For customers using thermal oil electric heaters, a water-cooled shell-and-tube heat exchanger has been designed. Thermal oil flows through the shell and cooling water flows through the tubes. The heat exchange tubes are made of 304 stainless steel, allowing them to meet the customer's cooling process requirements in a shorter time. Are air-cooled coolers suitable for thermal oil electric heaters? Air-cooled coolers are essentially cooling tubes with fins, and their cost and service life are inferior to those of water-cooled coolers.