Sulfuric acid pipeline issue
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What material should be used for sulfuric acid pipelines? And what materials should be used for the valves and fittings on these pipelines?
1. 98-grade acid-resistant carbon steel will suffice. 2. Pipelines lined with PTFE and diaphragm valves can be considered
Reply to 2# Storage and Transportation Engineer: The other valves I chose also have PTFE linings
Reply to 2# Storage and Transportation Engineer: Concentrated sulfuric acid needs to be transported over short distances using plastic pipes. What type of plastic pipe should be used? What are the requirements?
Corrosion Data and Material Selection Manual: Most plastics can only withstand sulfuric acid at concentrations below 70%, and they are also not resistant to high temperatures. A few types, such as fluoroplastics, can withstand high temperatures and high-concentration sulfuric acid, but they are expensive, difficult to shape, and have limited applications; they are generally used only as washers and fillers.
Corrosion Data and Material Selection Manual: Most plastics can only withstand sulfuric acid at concentrations below 70%, and they are also not resistant to high temperatures. A few types, such as fluoroplastics, can withstand high temperatures and high-concentration sulfuric acid, but they are expensive, difficult to shape, and have limited applications; they are generally used only as washers and fillers.