I would like to ask the experts: what kind of pipeline is generally suitable for transporting concentrated sulfuric acid?
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I would like to ask the experts: what kind of pipeline is generally suitable for transporting concentrated sulfuric acid?
This post was last edited by leo_0088 on 2016-11-2 at 13:09. Is your sulfuric acid containing air or not? What is the pressure? What is the temperature? If the pressure and temperature are not high, it is recommended to use plastic pipes! If the pressure and temperature are high, then pipes made of double-layer stainless steel, 254SMO, 20 alloy, C276 alloy, or zirconium can be used. Is this answer satisfactory? :lol :lol QQ:xxx
Stainless steel pipes will do; of course, plastic ones are also an option. It is recommended to refer to the chemical process design manual.
For concentrated sulfuric acid, 98% or higher, carbon steel piping is sufficient.
Currently, the most commonly used pipes for transporting sulfuric acid in its production are cast iron pipes; a smaller amount use steel pipes or pipes lined with fluoroplastic. A more advanced option is stainless steel pipes equipped with anodic protection. Cast iron pipes have a long service life, typically reaching 5 years. However, they have numerous flange connections, which increases the risk of acid leakage. In acid transport pipelines that are quite long, starting or stopping the pump can cause sudden pressure changes that lead to brittle fracture of the cast iron pipes. Carbon steel is resistant to concentrated sulfuric acid at room temperature, but an increase in the acid temperature and flow rate accelerates the damage to the protective film on the surface of carbon steel, leading to rapid corrosion.
Refer to the instructions on the last page of sh3059
The person on floor 7 explained it in more detail; I learned from it
:Lol, for over 98% of cases, it can be transported using 20# steel pipes or cast iron pipes; non-metallic pipes can also be used
For concentrated sulfuric acid at room temperature, 20# is sufficient
If the temperature is not high, use carbon steel pipes directly – it’s economical and safe
Manufacturers of concentrated sulfuric acid use cast iron, like Nanjing Minle! You’d better ask those manufacturers who specialize in the design of sulfuric acid production facilities, such as Yangzhou Qingsong and Zhanjiang Zhongming!
Carbon steel pipe: time: :victory:
Hehe, in some processes, concentrated sulfuric acid is used for dehydration; after dehydration, the concentration of sulfuric acid decreases while its corrosivity increases relatively. Consider using lined pipes for this purpose.
I work on pipelines for transporting oil and gas; I really didn’t know what kind of pipeline to use for concentrated sulfuric acid. After looking into it, I gained some knowledge. Thank you
For 98% sulfuric acid at room temperature, we use carbon steel pipes and storage tanks