Regarding the issue of tank heating

The residue tank definitely needs a heater. . . If the diesel tank is located south of the Yangtze River, a heater may not be necessary. . . The gasoline tank does not require a heater in either the north or the south. . . Gasoline will evaporate even without a heater; what about with one? . . . Haha. . . :lol

If it is in the northeast, can a diesel tank do without a heater? Can heat tracing be applied directly to the inlet and outlet pipelines of the diesel storage tank instead?

Why doesn’t gasoline freeze in winter?

Whether to heat the raw material tank depends mainly on the freezing point of the oil inside the tank and the ambient temperature in its location; it is sufficient to ensure that the oil does not freeze, so as to meet the requirements for its transportation and use.

The freezing point of diesel changes depending on the season. In the north, I think it is sufficient to insulate the diesel tanks; there is no need for heaters, as their presence causes the temperature of the oil around them to rise significantly, which can lead to deterioration of the oil. That is, the color darkens. Heat tracing and insulation can be considered for the pipelines.

Whether oil needs to be heated is related to its freezing point. However, when checking the quality specifications for gasoline, diesel, and residue oil, it’s possible that not all of these parameters will be listed. Let’s discuss them separately: For diesel, the freezing points range from -10, -5, 0, +10, etc. These values indicate the temperature at which the oil loses its fluidity under specified testing conditions – that is, when the test tube is tilted at 45 degrees and, after one minute, no movement of the oil surface can be seen with the naked eye. Simply put, diesel fuel with grade 0 stops flowing altogether at zero degrees. Residue is generally understood as a type of fuel oil; its pour point refers to the lowest temperature at which a petroleum product can flow out of a standard-shaped container during the cooling process. Taking Russian M100 fuel oil as an example (the specifications for residue oil were not available), its pour point should not be higher than +24; in other words, at 24 degrees or below, it will not flow out of the container. Gasoline does not have a definite freezing point, as it is a mixture composed of various alkanes. Since different alkanes have different freezing points – the alkanes with a higher carbon content have higher freezing points – gasoline does not have a fixed freezing point. Generally, the freezing point of gasoline is below 0 degrees; as the friend above mentioned, it evaporates before it can reach that freezing point. Look at the local issues, examine the quality parameters of a certain type of oil, and heat it according to the circumstances.

Are both the residue tank and the diesel tank heated with heaters? Why isn’t the gasoline tank heated? This is related to the freezing point of the oil. Residual oil and diesel have high freezing points; in winter, if heaters are not used for heating, the viscosity of these oils increases, causing them to condense in storage tanks and pipelines, thereby preventing their transport ； In summer, residue also must be heated. Gas tanks do not require heating because of the low freezing point of gasoline.