Calculation of safety valves under fire conditions
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A fire broke out around the liquid-liquid separation tank at the fuel gas inlet of the hot water boiler; it is recommended to install safety valves for fire conditions on this tank. The fuel gas from the hot water boiler is used to feed the stripping gas pipeline of the regeneration unit (stripping gas pressure: 0.3–0.4 MPa). The boiler fuel gas liquid separator (design pressure: 1.18 MPa) is connected to the stripping gas liquid separator and operates within the same pressure system; an overpressure relief valve (set pressure: 0.58 MPa) has been installed on the stripping gas liquid separator. How to calculate the safety valve for a gas-liquid separation tank under fire conditions? Thank you!
In the owner’s case, the design pressure of the main unit is much higher than the pressure at the source. Under normal circumstances, installing a safety valve in the system is sufficient; however, considering the possibility of fires, in my opinion, it would be advisable to install a safety valve on the main unit one that can handle an overpressure of 21%.
Well, yes, the highest is a design pressure of 121%. Thank you.