Is the flash vaporization volume smaller when liquid is introduced from the top or from the bottom of the LNG storage tank?
Thread Content
Is the flash vaporization volume smaller when liquid is introduced from the top or from the bottom of the LNG storage tank?
Are you a receiving station or a manufacturing factory? It has little impact on the manufacturing plants
In the case of a receiving station, it is generally determined whether to feed the liquid from above or below based on the density of the LNG arriving and that of the LNG already in the tank; when the densities are similar, feeding from below is preferred as it helps to reduce flashing
The liquid inlet flash volume at the LNG plant is low.
Personally, I think it’s important to consider the temperature of the liquid being fed in and the temperature of the tank. Generally, the temperature of the liquid entering is lower than that of the tank, while the temperature inside the tank is usually higher for the gas phase and lower for the liquid phase. When the liquid enters from above, it causes heating, vaporization, and flashing. Additionally, spraying leads to heat absorption and temperature increase. When the liquid enters from below, these two effects are much less significant, resulting in less flashing
In the case of factories, when feeding liquid into storage tanks, liquid is generally introduced from below