How long does the high temperature heat transfer oil last? How long does it take to replace it?
December 20, 2021
No matter what product has a certain service life, when the service life is reached, it must be replaced in time, otherwise it will affect the use effect. The same is true for high-temperature heat-conducting oil. How often should the high-temperature heat-conducting oil be replaced? I believe many friends are a little confused, let's take a look.
A long time ago, everyone used mineral heat transfer oil. Because of the limited technical conditions, the performance of the high temperature heat transfer oil at that time was very unstable and the service life was relatively short. With the continuous advancement of technology, the current high temperature heat transfer oil uses excellent The performance of Base Oil and additives is still very stable under high temperature environment, it is not easy to cause the problem of coking and carbon deposition, and the service life is also extended a lot.
How often should the high-temperature heat transfer oil be replaced? Generally over 5 or 6 years, the index of heat transfer oil should be tested regularly, once every six months, and should be tested by specialized technicians. The use of high-temperature heat conducting oil is extremely important to the safe operation of heat-conducting oil furnaces. Improper use may also cause serious consequences such as boiler explosion. Therefore, the heat transfer oil must be selected. The quality inspection of the heat transfer oil must be qualified. Check the heat transfer oil in a timely manner. Because the heat transfer oil is prone to occur when the heat transfer medium runs at high temperature. Oxidation reaction causes the deterioration and deterioration of the heat transfer oil, so the set high temperature expansion tank is usually filled with nitrogen to ensure the closure of the heat carrier system, avoid the heat transfer oil and air contact, and extend the service life of the heat transfer oil. When the operating temperature is between 300 and 400°C, thermal cracking is likely to occur, and carbon deposits are formed on the inner wall of the pipeline and equipment, which will cause heat accumulation in the pipeline to affect the heat transfer efficiency. Local overheating of the pipeline damages the mechanical strength and endangers personal safety. The fouling of high-temperature heat transfer oil in the pipeline reduces the flow area of the oil pipeline to varying degrees, increases the frictional resistance, increases the energy consumption of the transportation, reduces the oil transportation capacity of the pipeline, and sometimes even causes the initial condensation to stop the flow, etc. The accident happened. In addition, the grease and coke produced by the high-temperature heat transfer oil can increase the thermal resistance of the pipe wall, increase the energy consumption during the production process, and shorten the life of the equipment. The scale layer also reduces the inner diameter of the equipment, which seriously affects the production. At this time, it is necessary to replace the heat-conducting oil and clean the heat-conducting oil furnace in time.
