I need help from experts: What causes condensation or freezing on the outer wall of a spherical tank? What impact does it have on the spherical tank? How can such problems be resolved or prevented?
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When storing liquefied gas in a spherical tank, does condensation water or ice form on the outer tank wall? Were those reasons the cause? What are the consequences? How should accidents be prevented?
It is caused by changes in the internal temperature of the spherical tank.
Solution: During storage, under what conditions will the medium inside a spherical tank vaporize and absorb heat?
The spherical tank shell exists in the atmosphere without any insulation layer, relying on its inherent heat transfer capacity. As long as the atmospheric temperature is higher than the temperature of the liquid inside the tank, the liquid (at its saturation temperature) will vaporize through heat transfer. If a insulation layer is installed, it may prevent freezing and the formation of water droplets. More importantly, it can prevent surface corrosion caused by surface moisture. The original design requirements should still be followed; such equipment is all approved by the safety supervision authorities.
It may be that the vaporization of liquefied gas causes the temperature of the tank to drop; therefore, it is necessary to carefully check the sealing of all valves and vent lines connected to the tank to ensure there are no leaks. Observe whether there is a trend of increasing pressure in the spherical tank over the recent period.
The temperature inside the tank is too low； (Or when there is a large temperature difference with the outside environment), water in the air condenses on the tank walls, which can cause corrosion to the tank surface or the connections of related pipelines ； The possible reason is that the storage tank lacks insulation; it is recommended to insulate the tank or adjust the temperature of the material inside it in order to reduce the temperature difference between the inside and outside.
There have been meetings all the time; the 4th floor is the right choice. Such spherical tanks should preferably be insulated or kept cold, firstly to prevent the loss of heat or cold, and mainly to prevent corrosion.