For tanks suffering from wet hydrogen sulfide corrosion, should special materials be used or anti-corrosion coatings on the inner wall? Comparison from technical, economic, and operational perspectives
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For tanks subjected to wet hydrogen sulfide corrosion, is it better to apply an anti-corrosion coating to the inner wall, or to use a corrosion-resistant steel material for the tank itself? If a resistant material is to be used, which one is preferable? The specifications of the tank cylinder are a diameter of 1 meter and a height of 3 meters.
It depends on what the storage medium is. These small tanks are generally made of HIC-resistant steel; in cases of severe corrosion, an epoxy resin coating is applied.
Specifically, it depends on the temperature of your medium within the equipment in order to recommend a suitable internal wall anti-corrosion solution for you. It ranges from a few hundred per square unit to several thousand per square unit. There are PO, PE roll coating, PTFE sheets, PTFE spraying, and so on. It is recommended to use a carbon steel substrate with an anti-corrosion coating on the inner wall; this approach is safer and more environmentally friendly than using anti-corrosion measures directly on the substrate.
What does corrosion-resistant steel refer to? Is 304 okay?
Additional information on the topic: The adsorption tank is used to remove hydrogen sulfide-containing gases, which also contain a small amount of water vapor. It’s easier to apply a coating to the inner wall of large tanks. My thought is that since the diameter here is smaller, how can we make it more convenient?
Yes, as long as the temperature isn’t high, it’s usually all 304
Do people have different opinions on this issue? Some say that 304 is susceptible to stress corrosion in a wet hydrogen sulfide environment; let’s discuss this
Polyaniline nano-coating can be chosen