Pipeline grade table for 31% salt acid and 32% alkaline solution
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Recently, the pipelines have been used for transporting 31% salt acid and 32% sodium hydroxide, at a pressure ranging from 0.5 to 0.6 MPa and a temperature of around 40 degrees. Could someone please provide a pipeline grade table for reference? I am extremely grateful
For such corrosive media, plastic-lined pipes are generally used; I discussed the pipelines in the salt and acid storage areas with a design institute some time ago.
Salt and acid pipelines seem to be able to use fiberglass-reinforced plastic
Could some expert please send me a table showing the pressure ratings for these two types of pipes? Email: 2522184975@qq.com. Thank you
The pipeline grade can be determined in accordance with the \"Installation Design Manual for Process Pipelines in Petrochemical Plants\", Part 2: Pipeline Materials. For pipelines exposed to 31% saline acid, fiberglass or the new material CPVC can be used; the person in question can refer to relevant materials for more information
What material should be used for the valves of such pipes?
If the temperature is not high, use lined pipes for acids, and lined valves for controls, such as diaphragm valves or ball valves. Check the temperature for NaoH; if it’s not high, then nothing special is needed – an ordinary stainless steel grade will suffice
Steel-lined PTFE pipes are completely fine; a flange standard of 10 kilograms is sufficient. I work in this field!
Steel-reinforced PE pipes for salt and acid pipelines – easy to connect and replace, though the cost is a bit higher.