Substances that affect the flash point of diesel
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The diesel fuel we produce for use in vehicles passes all the quality tests in the finished product storage areas. However, when it arrives at the oil depot in train tank cars, its flash point is found to have dropped from 76 degrees to 36 degrees, although its initial boiling point remains at 160 degrees. I suspect the tank cleaning vehicle didn’t clean it thoroughly, but what substance, even in small amounts, could cause such a significant drop in the flash point?
It’s the solvent used for cleaning tank trucks; it wasn’t cleaned properly. This substance has a much lower flash point, and explosions could occur. It’s still better to clean it up properly.
It should be solvent oil; be careful, though – its flash point is too low. You must be very cautious.
It is recommended that the original poster buy a copy of \"Storage and Transportation of Fuels\" to read
Gasoline and solvent oil are both possible options
The flash point refers to the lowest temperature at which a petroleum product, under specified conditions, will ignite instantly when its vapor comes into contact with a flame upon heating. The lighter the oil, the lower its flash point. The hazard level of oils is determined by their flash point. The flash point can be used to determine the severity of an oil’s composition and to assess the risk of fire involving that oil. The flash point determined using a closed-cup flash point tester is called the closed-cup flash point, and it is generally used to determine light petroleum products. The higher the flash point, the safer it is.
Diesel has a low flash point because it contains small amounts of light components that are typical of gasoline. This always exists under the gas-liquid equilibrium adjustment of the diesel extraction tray. To this end, the distilled diesel is fed into a stripping tower, where steam is blown in at the lower part of the tower to vaporize the light components. The stripping tower settings can also be adjusted to control the flash point. The flash point is determined before the device is produced. It’s not a problem with the oil. It must be related to the tank truck~~ the flash point has dropped significantly. Then that solvent oil must be extremely light and highly volatile
Empty the gasoline sampling bottle and collect a diesel sample; its flash point is around 30 degrees.
Solvent oil – why is it called solvent oil? Why hasn’t the initial boiling point changed? I’d like to ask for advice
When I saw this title that day, I was thinking about the same question: if it is the light components that cause changes in the flash point, then the initial boiling point of the oil should be the key factor to consider.