Does this indicate that the material is resistant to sulfuric acid corrosion?
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98% concentrated sulfuric acid is transported at room temperature using a metering pump at a rate of 1 ton per day. The inlet filter is made of 304 stainless steel, and corrosion does not occur after just one week. There is a large amount of sediment at the bottom of the tank under normal pressure, and it appears black in color. May I ask, does this operating condition indicate that the material is quite resistant to sulfuric acid corrosion?
Carbon steel is used for pipelines and storage tanks. The filter uses nylon 66 (or nylon 99; I can’t remember).
What is the mesh size of the filter? Generally, PTFE material is a good choice. If the flow rate is not high, carbon steel can be used for the pipelines, and carbon steel as well for the equipment
Sulfuric acid definitely requires nickel-based alloy 625!
Carbon steel is used for sulfuric acid pipelines and storage tanks, while polytetrafluoroethylene can be used for filters. It is best not to draw from the very bottom of the storage tank; installing a drain at the bottom for regular slag removal can reduce the frequency of filter cleaning.
I am engaged in the manufacturing of nickel-based alloys, corrosion-resistant alloys, superalloys, and super-austenitic stainless steels
It depends on the temperature; if it’s at room temperature, I think 316L or Hastelloy would be a good choice
If the temperature isn’t high, use one with a 4F lining!
98% concentrated sulfuric acid, at room temperature... both carbon steel and PTFE-lined materials can handle it
In terms of cost, PTFE lining is definitely cheaper than special metals. It has a long lifespan at room temperature, so you can use it with confidence.