Why can’t pipes containing hydrogen sulfide be purged with steam?
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Is it fear of corrosion, or some other reason?
It’s probably because of fear of corrosion! If any expert knows other reasons, please share them.
Steam condenses into water, and together with hydrogen sulfide it forms hydrosulfuric acid, which causes corrosion in the pipelines
I heard from the experienced workers that condensate water is either weakly acidic or weakly alkaline; I’m not sure if this is true
Yes, the formation of hydrosulfuric acid causes corrosion to the pipes.
The material is unknown, but generally there are two main considerations that won’t differ much: 1. Preventing sulfide stress corrosion； 2. Prevent the spontaneous combustion of ferrous sulfide at high temperatures.