Is insulation needed for liquid ammonia spheres?
Thread Content
The liquid ammonia stored in liquid ammonia spherical tanks is at a lower temperature than the ambient temperature; without insulation, condensation occurs severely when the temperature rises, which can easily damage the anti-corrosion coating, resulting in rust formation within barely a year. What if it’s insulated? Since the original design used spray cooling water for temperature reduction, can the cooling water spray be eliminated if insulation is used instead? In accordance with Article 34 of the \"Technical Specifications for Safe Production of Liquid Ammonia Storage and Loading/Unloading in Shandong Province (Trial)\“, liquid ammonia storage tanks shall be equipped with sun protection facilities, cooling water spray systems for temperature reduction, or have good insulation measures. ”It should be possible. Please have your colleagues discuss it.
So, what about applying resin to the surface? Sun protection should be essential.
It should be kept warm. . . . . . . . . . . . . . . . . . . .
It should be insulated; otherwise, it wouldn’t make sense from an energy consumption perspective.
For liquid ammonia tanks at room temperature, I require the adhesive to be applied by the manufacturer.
Yeah, that’s exactly how the ammonia storage tanks in my factory are designed – with insulation layers and cooling sprayers. It’s pretty strange; I thought they were used for diluting ammonia in case of a fire.
In theory, liquid ammonia storage tanks are designed to operate at room temperature, so no additional cooling is required. However, the surface of the spherical tank is usually coated with insulating glue, but spraying is still necessary.
The liquid ammonia storage tanks I’ve seen don’t have any insulation; perhaps there is a coating as mentioned above, but it’s not clear whether it’s on the inside or the outside. This requires further clarification from the person downstairs.
Pressure spheres are generally not insulated; they are designed for a temperature of 50°C. During the hottest periods, the pressure may exceed this level for a few days, and this can be addressed by applying insulating sealant or using cooling sprays
Even with a thermal insulation layer in place, a spraying system is still necessary; this system is used to cool the tank down in the event of a fire in an adjacent tank, so as to avoid being affected by the fire in those surrounding tanks.