1, At a specific temperature, the corrosion rate of dilute sulfuric acid on carbon steel increases with the increase in concentration. After reaching a specific concentration, the corrosion rate decreases sharply with the increase in concentration. 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. Passed0.67m/sThe flow rate will cause turbulent corrosion, especially at the inlet and outlet of the pipeline.

       2, 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 not be oxidized and corroded. So usecarbon steel storage tankIt can meet production needs, but some corrosion allowance must be left.

       3. Due to the water absorption of concentrated sulfuric acid, attention should be paid to moisture-proofing when storing in carbon steel storage tanks. Desiccant can be added to the breathing line. Nitrogen sealing can be added to large equipment to isolate water vapor.

       4, Carbon steel storage tanks are used to store concentrated sulfuric acid, and are also closely related to other usage conditions.