Sludge in the acidic gas liquid removal tank for sulfur raw materials
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During the shutdown, was there sludge in the acidic gas liquid removal tank containing sulfur raw materials, which caused the hydrogen sulfide level to exceed the limits? Oxygen-free operations couldn’t be carried out. Do anyone have any good solutions?
There must be sediment; it can only be removed by steaming, with testing carried out over 48 consecutive hours, and cleaning via the manhole is permitted only after the tests show satisfactory results.
The method upstairs is feasible, but it just takes a bit more time. We sometimes use substances similar to ferrous sulfide passivators and spray them into the tank, which can also help to decompose H2S.
Reply to 3# Clauspolunit: The effect of steam purging isn’t particularly significant, and it’s indeed slow; steam can only carry away the volatile components above the sludge, so it can’t solve the problem at its root, right? Could you explain in more detail the passivating agent mentioned by the moderator?
Reply to 4# Sideguard: I’m not quite sure about the specific components; it seems to be an oxidizing agent similar to potassium permanganate. They are available for sale in the market.
I know our unit has been used; generally, when the acidic water and regeneration units are shut down, a passivating agent is circulated to remove ferrous sulfide. I don’t have that specific model at home, but the manufacturer seems to be something like Jinan Ruidong! !