Investigation of electrostatic potential in benzene tank cars

In this work, the electrostatic potential inside a 44.7m3 benzene tank truck was taken as the research object, and the COMSOL numerical simulation model was utilized to analyze the distribution of electrostatic potential within the tank. The results indicate that when using loading and unloading methods, namely "submerged loading arm" and "bottom loading", the variation law of the maximum electrostatic potential value inside the tank shows an upward trend, while the maximum electrostatic potential value at the liquid surface follows a parabolic trend, reaching its maximum value at approximately a 70% filling rate.