What causes crystallization in heat transfer oil?
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The vent for high-temperature heat transfer oil often tends to crystallize and get blocked; could everyone please analyze the reasons behind this crystallization?
Other substances enter the heat transfer oil； After being used for 3–5 years, heat transfer oils, especially mineral oils, may develop large molecules or undergo carbonization as a result. Test oil products.
Could it be that certain substances evaporate at high temperatures and then cool and crystallize at the vent?
It should be oxidation that causes deterioration and blockage