Material issue
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What material should be used for hydrochloric acid transport pipelines?
The selection of pipeline materials usually needs to be determined based on parameters such as the concentration and temperature of the medium being transported (hydrochloric acid). If the hydrochloric acid concentration is between 10% and 35% and the temperature is below 75°C, steel pipes lined with fluoroplastic materials (such as F40F, F46, etc.) can be used. For reference!
If the temperature is below 50 degrees, it is sufficient to use UPVC or ABS pipes for transporting dilute hydrochloric acid.
I agree quite a bit with the opinion from the third floor; if the temperature isn’t high, it’s advisable to use fiberglass, UPVC, or CPVC pipes for delivery, as they are reliable and relatively inexpensive.
If the temperature is high, tantalum can be used as a lining inside the steel pipe.
Hastelloy is too expensive and its effects are not significant; using a steel lining with PE is sufficient, as it is cheaper than PTFE.
It is sufficient to use a steel-plastic composite pipe, which has high strength and is corrosion-resistant
Weak hydrochloric acid can be transported using UPVC or ABS pipes
PVC/FRP pipes can be used at temperatures below 80°C, while PP/FRP pipes are suitable for temperatures below 100°C. PVC and PP pipes can be used when the pressure is low and the temperature is not high
Material selection must be done carefully, as not all stainless steels are resistant to hydrochloric acid. If I remember correctly, it’s 1CR18NI9TI