Regarding the calculation of storage losses and loading/unloading losses for propylene
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Dear all**, I would like to ask about the calculation of losses during the storage of propylene, as well as those that occur during loading and unloading. 1. When propylene is stored in tanks, rising ambient temperatures cause it to vaporize； How is the amount of propylene gas vaporized in this section calculated? ； For example: the pressure increases from 1.7 to 1.9 ； The liquid level has dropped by 0.5 ； How much propylene is being vaporized? It is also possible that due to the increased pressure, some of this vaporized propylene gas is lost through leaks inside the valves. 2. How is the calculation done between the liquid and gas phases of propylene? 3. Is there a formula or something for calculating the losses during the loading and unloading of propylene? I want to do some calculations regarding losses, but I don’t know where to start!
Isn’t there anyone who can **come and answer this?**
It’s not that complicated, right? How about calculating it using batch storage? Our unloading volume is mainly based on weighing. Loss amount = Weighed weight – Increase in tank inventory.
Dude, I want to conduct theoretical research – I need theoretical data support as well as relevant computational methods for that! ! !
Is the original poster into theoretical calculations? The reduction in the liquid phase can be determined through changes in the liquid level, while changes in the gas phase can be detected through changes in pressure. Of course, the change in liquid phase density cannot be ignored in the calculations. As for internal leakage in valves, there is no good way to calculate it; one can only rely on the data provided by the valve manufacturers. As for the losses that occur during loading and unloading, it depends on the actual procedures in place; theoretically, there should be no such losses.