Design of liquefied gas storage tanks
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This post was last edited by Lan Meng on 2009-5-19 10:27. How should the design pressure of a liquefied gas medium storage container be selected? Is it selected according to Table 3-3 in the capacity regulations? In Table 3-3, the 50 degree saturated vapor pressure of liquefied petroleum gas is >1.62MPa, and the design pressure is 2.16MPa ； In other cases, the design pressure is 1.77MPa. ； Do other situations refer to the situation where the 50 degree saturated vapor pressure of liquefied petroleum gas is ≤1.62MPa?
It should refer to the situation where the 50 degree saturated vapor pressure of liquefied petroleum gas is ≤1.62MPa.
The design pressure of our storage tank is 1.77MPa.
The original poster's understanding is completely correct. The actual design pressure of the LPG storage tank is 1.77MPa.
So when to take 2.16MPa?
It should be selected according to Table 3-3. The 50 degree saturated vapor pressure of liquefied petroleum gas is >1.62MPa, and the design pressure is 2.16MPa.； The 50 degree saturated vapor pressure of liquefied petroleum gas is ≤1.62MPa, and the design pressure is 1.77MPa. Therefore, under normal circumstances, the 50-degree saturated vapor pressure of liquefied petroleum gas is ≤1.62MPa, and the design pressure is also taken as 1.77MPa.
I agree that my unit on the 3rd floor is also 1.77MPA
The components of liquefied petroleum gas must be marked. Different components have different saturated vapor pressures. For example, if the main component is propane, the pressure is 1.77; if the main component is propylene, the pressure is 2.16. There are also multiple components. You need to calculate the saturated vapor pressure at 50 degrees. When it is not greater than 1.62, you can take 1.77.
View from upstairs: (It should be selected according to Table 3-3. The 50 degree saturated vapor pressure of liquefied petroleum gas is >1.62MPa, and the design pressure is 2.16MPa. ； The 50 degree saturated vapor pressure of liquefied petroleum gas is ≤1.62MPa, and the design pressure is 1.77MPa. Therefore, under normal circumstances, the 50-degree saturated vapor pressure of liquefied petroleum gas is ≤1.62MPa, and the design pressure is also taken as 1.77MPa. ) is correct and comprehensive ； If LPG residual liquid is stored, that is, a residual liquid tank, the design pressure of the residual liquid tank can be 1.62MPa.