Requirements for the purity of nitrogen used for nitrogen sealing
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Dear experts, what is the required purity level of nitrogen used for nitrogen sealing in storage tanks? Which specification has such requirements?
No such requirements were seen either; ours is produced by the direct vaporization of liquid nitrogen.
It depends on the purpose of using the nitrogen seal; for protecting flammable liquids, nitrogen from air separation is sufficient, with an oxygen content that meets the minimum requirements
Does nitrogen sealing prevent oxidation or explosions? The difference between the two is significant.
There are no specific regulatory requirements; it’s generally just *custom practice. Low-temperature storage tanks are generally used for the vaporization of liquid nitrogen
Nitrogen separated by air separation is sufficient; it usually has a purity of over 99.9%, with a dew point of -70°C℃
We use high-purity nitrogen, over 99%
There should be no specific requirements; it mainly depends on the purity of N2 that you prepare or purchase.