At a certain temperature, the corrosion rate of dilute sulfuric acid on carbon steel increases as the concentration increases. After reaching a certain concentration, the corrosion rate drops sharply as the concentration increases. For the concentration in80%above, temperature less than60℃Concentrated sulfuric acid, carbon steel and cast iron have better corrosion resistance, but it is not suitable for flowing sulfuric acid. Exceed0.67m/sThe flow rate will cause turbulent corrosion, especially at the inlet and outlet of the pipeline.
       The quality score is greater than70%Concentrated sulfuric acid can cause passivation when it meets iron. Concentrated sulfuric acid will oxidize the surface of the steel to form an oxide layer. Because there is very little water in concentrated sulfuric acid, there are no free ions. The oxide layer will no longer be oxidized and corroded. Therefore, it is entirely possible to use carbon steel storage tanks, but a certain corrosion allowance must be left.