Dangers of overheating in pressure vessels
Thread Content
We have a carbon pentane pressure sphere tank with a design temperature of up to 50°C; it often overheats in the summer. When this happens, we cool the tank by activating its spray system. What are the hazards of a spherical tank exceeding its design temperature? . . .
At this temperature caused by sunlight exposure, using spray water for cooling is primarily intended to reduce the pressure of the medium inside the storage tank.
Overheating can lead to overpressure; the hazards need no further explanation.
Over-temperature means over-pressure, which is absolutely prohibited...
As the temperature rises, the pressure of liquefied gas increases, and as a result the equipment operates under excessive pressure. Previously, the design pressure for liquefied gas was based on the saturated steam pressure at 50°C, which made it easy for the pressure to exceed safe levels; now, the saturated steam pressure at 50°C is used as the operating pressure, which makes things relatively safer compared to before. Spraying water for cooling should suffice in case of overheating; it’s mainly the ambient temperature that affects the operating temperature!
If the spherical tank exceeds its design temperature, it will also exceed the design pressure, leading to an explosion.
This post was last edited by wuchangjian on 2015-7-30 08:59. The designed temperature is 50 degrees, indicating that the previous technical specifications stated that the maximum temperature should not exceed 50 degrees. It can only be said that it is designed for 50 degrees. Check the medium properties. . .
The tank body is coated with a shiny heat-insulating and anti-corrosion coating or insulated (kept cold) to block sunlight and reduce the impact of ambient temperatures.
That’s right; excessive temperature means excessive pressure, and when it reaches a certain level, it becomes dangerous! ! ! ! ! ! ! ! ! ! ! ! !
The code stipulates that design should be based on a saturated steam pressure of 50 degrees when no insulation is used
Over-temperature means over-pressure, which is absolutely prohibited