Which parameters of circulating heat transfer oil need to be checked for being out of range before it is replaced or partially replaced?
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Which parameters of circulating heat transfer oil need to be checked for being out of range before it is replaced or partially replaced?
It is mainly used to detect the carbonization value! ! ! ! ! ! ! ! ! ! ! ! !
Mainly color, viscosity, freezing point, calorific value, impurity content, alkanes, cycloalkanes, aromatics--------------------------------
Impurity content, alkanes, cycloalkanes, aromatics
Regular semi-annual monitoring and analysis should be carried out to track changes in the properties of the oil; the residue content should not exceed 1.5%, the acid value should not exceed 0.5 mgKOH/g, the flash point should not change by more than 20%, and the viscosity should not change by more than 15%. If the oil meets the criteria for disposal, it must be replaced with new oil.
If a large amount of heat transfer oil is used, it can be collected, recycled, and reused.
The main thing is to ensure that the residual carbon does not exceed 1.5. When the quantity is large, using old oil can help save costs