The concentration of concentrated sulfuric acid is 92.5%, at room temperature – can carbon steel be used for storage tanks and pipelines?
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The concentration of concentrated sulfuric acid is 92.5%, at room temperature – can carbon steel be used for storage tanks and pipelines? Do I need to consider insulation in winter? Thank you!
What type of tank should be used to store dilute sulfuric acid with a concentration of 2%, and what material should be used for the pipes in case a pipe mixer is used? The main concern is excessive heat generation! Please, the moderator, don’t delete my post. Thank you!
This post was last edited by *lihuagong on 2015-9-25 at 15:41. With such a dilute sulfuric acid, it certainly won’t work; carbon steel can be used for 98% concentrated sulfuric acid, but not for less concentrated versions. Use PVC+FRP materials at normal temperatures; use a PTFE lining when the temperature is high. You can take a look at this great post, which summarizes the corrosion rates of various materials in concentrated sulfuric acid: The most comprehensive list ever! ! ! Equal corrosion diagrams and corrosion rates of various materials in sulfuric acid. http://bbs.hcbbs.com/thread-1039675-1-1.html (Source: Haichuan Chemical Industry Forum)
Materials such as plastic-lined, fluorine-lined, and fiberglass-reinforced plastics are corrosion-resistant and can be used under normal temperature and pressure conditions
At room temperature, 92.5% sulfuric acid can be used with carbon steel
The concentration of concentrated sulfuric acid is 92.5%; it is at room temperature, and carbon steel can be used for storage tanks and pipelines. No insulation is required in winter
It can be used without the need for corrosion protection; insulation is required in particularly cold winter conditions. You can check the annual corrosion rate at the Corrosion Museum, and regular thickness measurements will suffice
PE pipes can be used; PVC cannot be used :)
Materials such as plastic-lined, fluorine-lined, or fiberglass-reinforced plastics offer corrosion resistance and can be used under normal temperature and pressure conditions. All of my clients who work with sulfuric acid use this type of fiberglass-reinforced plastic. If you are interested in learning more about plate heat exchangers for dilute or concentrated acids, please visit our website for more information. Thank you! Contact person: Mr. Luo.
Sulfuric acid has a high density, so less fiberglass is used
If the acid concentration and temperature remain stable, and no requirements are placed on the purity of the acid, it can be used without issue. Otherwise, stainless steel is still recommended.