Recently, some manufacturers have manufactured pre insulated FRP tanks. For example, there is a standard type FRP tank series with 2-inch fiberglass insulation. The K value of glass fiber is 0.28, and the insulating layer is completely combined with FRP layer. Obviously, this preventive measure can save some insulation costs.
In the past, a company tried to make double-layer storage tanks. Polyurethane foam only foam in the pipe wall. In this design, the shear force generated between the main oil tank and the protective shell causes trouble, which does not exist in the glass fiber insulation.
Other insulation methods for outdoor glass fiber reinforced plastic cans are commonly used. They have steam nets or jackets made of chlorinated sulfonated polyethylene; When some storage tanks or operation tanks in the chemical industry operate below zero, thermal insulation is required. The absorption of heat will have a significant adverse impact on the economic impact of the operation.
For example, on a 12 inch diameter tank with half the wall thickness of a glass fiber reinforced plastic tank, using an inch thick foam rubber as an insulating layer can reduce the heat absorption of the solution by 80%. At this time, the solution is stirring. Humidity is the brightness, and the outdoor temperature is 35 degrees; When the solution in a thin-walled container with a quarter inch wall thickness is zero, the outer wall temperature is about 10 degrees.
This means that in warm summer, there will be a lot of condensation on the glass fiber reinforced plastic tank container or pipeline, and the insulating layer should be able to prevent condensation and dripping; Condensation varies with wall temperature and atmospheric dew point; In addition to preventing condensation and antifreeze, FRP tanks other than low-temperature operation vessels do not need thermal insulation. Unless there are special requirements for a specific process, it is not necessary to keep the solution warm at room temperature or when the room temperature is close to the upper limit of service temperature.
On the other hand, it should be recognized that when the external temperature is low, the exhaust pipe system connected to the container can also condense on the inner wall. However, if there is a problem, the condensed steam can be discharged or discharged together with the gas.