Low temperature tank wall and roof
Thermal insulation tank wall and roof solutions for tanks operating at below ambient temperatures. Our tank wall and roof systems will limit heat transfer and provide moisture and corrosion resistance so that process control is assured.
Tanks with operating temperatures not lower than about - 50°C are often called cold or low temperature storage tanks, these can contain products like butane, propane, ammonia, propylene, etc.
Tanks can vary in design and equipment, the type of construction and the storage temperature often depends on the properties of the products that are going to be stored in them. With such a broad variety of chemicals, a detailed assessment is necessary to ensure that all aspects are taken into consideration to ensure that a product can be stored and handled in a safe and efficient manner.
With tanks operating at this temperature, a main requirement is limiting the heat transfer or boil off rate that negatively affect the operating cost of a terminal. Installing a tank wall and roof insulation system will make sure your tank can store its content as efficiently as possible.
The difference in temperature between the cold content of the tank and the ambient temperature can cause a lot of surface condensation. This could lead to major issues with regards to corrosion and non- performing insulation which could pose a problem to the mechanical strength of your tank.
These risks can be prevented by choosing an insulation material with a completely closed cell structure.
FOAMGLAS® closed cell insulation is completely impervious to water and water vapor. The closed cell structure also prevents any absorption of flammable liquids or chemicals should a spill or leakage occur.
The tank walls of the tanks operating at temperatures not lower than -50°C are generally insulated with a single or multi-layer adhered system.
A usual design would be:
- the single wall tank without further protection. The wall insulation is directly installed on the outside face of the tank.
- the single wall tank with a bund wall built at a distance of 1 to 2 meters from the tank. The wall insulation is installed on the outer face of the tank.
- the double containment tank in which the inner steel tank is completely surrounded - base, wall and roof - by an exterior concrete tank. In this case the insulation system can be adhered on the outside face of the inside steel tank or on the inside face of the outside tank (the liner).
Typical configuration
for low temperature tank wall and roof applications
- a possible anti-corrosion layer on the surface to be insulated
- one or several layers of FOAMGLAS® cellular glass adhered with PC® adhesive, the joints being filled with the same product
- depending on the situation, a fabric reinforced coating or a metal jacket with the needed straps to keep it in place
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