LNG cryogenic storage tank
When we manufacture LNG cryogenic storage tanks, in order to ensure that the air pressure inside the tank is normal, in addition to the vacuum between the inner and outer layers, we also take the top of the tank to keep it cold and the bottom of the tank to burst the cold.
When we manufacture LNG cryogenic storage tanks, in order to ensure that the air pressure inside the tank is normal, in addition to the vacuum between the inner and outer layers, we also take the top of the tank to keep it cold and the bottom of the tank to burst the cold.
Tank roof cooling
The inner tank roof uses a suspended rock wool insulation layer, such as a tank roof set up 4 layers of glass fibre insulation layer, each layer is 100 mm thick, the density of glass fibre wool is 16 kg/m3, the thermal conductivity is 0.04 W/(m-K).
Bottom of the tank insulation
The bottom of the tank is more complex, and in addition to the sprayed polyurethane foam under the steel plate, a waterproof structure has to be designed. The diagram below shows a tank bottom insulation structure, including a 65 mm thick mat layer, 60 mm thick dense concrete, 2 mm thick waterproof linoleum, 2 layers of 100 mm thick foamed glass each, and finally a 70 mm thick concrete cover to protect the outer tank concrete from the effects of low temperatures
