Regarding the loading factor for liquid ammonia
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For liquid ammonia storage tanks (100 m3), what loading coefficient is used in typical designs? The Petroleum Regulations specify that it should not exceed 0.9, but after asking companies involved in ammonia synthesis, it was found that their coefficient ranges generally between 0.6 and 0.8. Ask those friends from Sichuan who have practical experience – how much do you use in your production?
For mobile pressure vessels filled with liquid ammonia, the filling coefficient (amount of material per unit volume) is 0.52; for fixed pressure vessels, as stipulated in Article 36 of the Pressure Vessels Regulations, this value shall not exceed 0.9. The liquid ammonia storage tank in our company’s cryogenic station (horizontal, 30 cubic meters) is generally kept below 0.85. For reference!
The tolerance specification specifies a value of not more than 0.9; the tolerance specification shall prevail. “The company coefficient for ammonia synthesis is generally between 0.6 and 0.8; this refers to actual operating conditions, and it’s not wrong to say that it should be \"no greater than 0.9\".
As for whether it is 0.9 or 0.6, this depends on the expansion coefficient of the liquid. For example, for petroleum products, light oils such as gasoline and diesel generally have a filling factor of 0.75–0.85, while heavier petroleum products such as lubricating oil have a filling factor of 0.8–0.9.
Liquid ammonia storage tank, 150 m3, 2.1 MPa, at room temperature – does it fall under category III pressure vessels? What category should an ammonia storage tank with a capacity of 12 m3, a pressure of 0.65 MPa, and operating at room temperature fall into?
The liquid ammonia storage tank is a Class 2 vessel, while the ammonia gas storage tank is a Class 1 vessel. Reason: Ammonia is a moderately hazardous substance for reference only!
Is ammonia moderately hazardous? I have seen that liquid ammonia storage tanks are classified as Category 3 containers!