What materials are used for lining sulfuric acid and nitric acid pipelines?
Thread Content
Can fiberglass be used? Can graphite metal gaskets be used for sealing?
Fiberglass can be used, and graphite metal gaskets can be employed for sealing.
PVDF,,,,,,,,
In my opinion, fluorinated lining pipes and fluorinated lining valves are the best choice
It is recommended to use pipes with a steel lining and fluoroplastic coating, as well as PTFE valves.
This post was last edited by Fan Zhou Chi Shang on 2012-7-31 at 14:37. Sulfuric acid is divided into dilute sulfuric acid and concentrated sulfuric acid. Concentrated sulfuric acid can be transported through carbon steel pipes, as it forms a dense oxide film on their surface at room temperature. Dilute sulfuric acid is highly corrosive; when the temperature is not very high, fluororubber lining can be used. Ceramic valves can be used when the temperature is too high. Whether fiberglass can be used also depends on the concentration and pressure. You can’t buy ready-made ones. Epoxy fiberglass can resist corrosion by sulfuric acid with a concentration of up to 60%, while vinyl fiberglass and bisphenol A-type unsaturated resin fiberglass can withstand sulfuric acid at around 70% concentration. Reference
In the case of dilute sulfuric acid and dilute nitric acid, using steel-reinforced plastic composite pipes is the most convenient and cost-effective option, as it avoids the common problem associated with lining pipes – easy delamination.
Polytetrafluoroethylene. . . . . . . . . . . . . . . . . . . . . .