Hydrobromic acid system equipment materials
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Working conditions: 18% hydrobromic acid system, temperature: 110 degrees ； Originally, glass-lined reaction tanks were used, and they had to be returned to the factory for re-lining after about 8 months of use. Is there any metal material that can withstand this working condition?
I found that the corrosion of titanium at a concentration of 40% at 100 degrees Celsius is less than 0.05mm/year. It is higher than 10 degrees here, so you can try it with a hanging plate.
I estimate that metal materials can only be alloy materials, which are very expensive. My personal suggestion is to use PTFE, which is made of tetrafluoroethylene.
Reply 3# jin* Is it inappropriate for the ng-520 reactor to be lined with PTFE? What's your heating method? If there is solid material, it will not be wear-resistant, and the cost will be high!
If titanium is shapeable, I would consider using a steel PE-lined reaction tank combined with a titanium tube heat exchanger!
Titanium is not good. Titanium is not resistant to high temperature hydrobromic acid. It is recommended to use Hastelloy B2, B3, B4.