Are there safety distance requirements for 25% ammonia storage tanks?
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In petrochemical regulations, only considerations are given to liquid ammonia storage tanks, and these tanks are designed in accordance with the standards for liquefied hydrocarbons. However, there are no requirements for ammonia storage tanks. Since ammonia water is different from liquid ammonia and is not classified as a Category B substance, there are no similar regulations in the building codes. The newly issued ammonia safety regulations only specify the health protection distance, but not the safety protection distance. So, are there no distance requirements for ammonia storage tanks? This is neither equipment nor a building; does that mean there are no requirements?
The stone regulations apply to flammable materials; the safety distance you mentioned should refer to the fire prevention distance. 25% ammonia solution is not flammable in itself, but it releases ammonia vapor. Moreover, if 25% ammonia storage tanks are not handled properly, there is a risk of explosion. Therefore, I suggest that you design them in accordance with the requirements for liquid ammonia storage tanks – that’s just my personal opinion.
This was discussed before; the link is: http://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1430701
These are two different things; explosions can also occur when working on salt or acid tanks, so should they be classified as Category A as well? Explosion cannot be equated with fire hazard classification. The amount of vaporization that occurs during normal operation of an ammonia tank is relatively small, so it cannot be classified as Category B. Toilets also produce biogas, so should they be classified as Category A?
It was discussed twice, but it seems we still haven’t figured out whether ammonia belongs to category B or category E I personally think it should be classified as Category B; I’ve also seen that in some literature, though I can’t remember where
Check the concentration and temperature. If the concentration is greater than 10%, it should still be classified as Category B.