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Is 20% nitric acid highly volatile? For a storage tank with a capacity of 20 cubic meters, can the vent port be used to discharge it directly into the atmosphere? ?

2016-11-08View Original

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Is 20% nitric acid highly volatile? For a storage tank with a capacity of 20 cubic meters, can the vent port be used to discharge it directly into the atmosphere? ?
Reply #22016-11-08
Will nitric acid at this concentration release a large amount of heat when it comes into contact with water?
Reply #32016-11-08
20% nitric acid has low volatility; for specific details, one can refer to the saturated vapor pressure of aqueous nitric acid (search on Baidu). Since it is not easily volatile and there are no environmental requirements, I believe there are no major issues with releasing it into the atmosphere. The heat release data can be calculated; it shouldn’t result in significant heat release.
Reply #42016-11-08
When acid is poured into the storage tank, a small amount of yellow nitrogen oxides are produced.
Reply #52016-11-09
It has low volatility; I store 68% nitric acid at atmospheric pressure and vent it on-site, and it remains quite stable
Reply #62018-08-31
Do you also work with horizontal storage tanks? Is a vent simply installed, or is it necessary to have a breathing valve as well?
Reply #72018-09-01
For vertical storage tanks, it’s not necessary to install a breathing valve

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