Selection of design pressure for pressure vessels storing refrigerant at atmospheric pressure
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Are pressure vessels used for storing refrigerants (methane, ethylene, propane, isobutane) at atmospheric pressure considered as vessels for storing liquefied gases at atmospheric pressure? If so, and since it also differs from the saturated vapor pressure of mixed liquefied petroleum gas (which is higher than the 50-degree saturated vapor pressure specified by regulations), how should the design pressure be determined?
Bro, the standard boiling point of methane is around -160 degrees; how do you manage to store it at atmospheric pressure?
It contains very little methane; it is a mixed refrigerant, with a normal operating temperature around zero degrees
The mixed refrigerant storage tank must definitely be arranged in accordance with the requirements for liquefied hydrocarbons. As for the design pressure, it mainly depends on the saturated vapor pressure at the highest operating temperature. If the calculated design pressure is too high, it is recommended to switch to semi-frozen storage.