Corrosion of HaC6 in the chlorine hydrochloric acid process
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The circulation pumps made of HC6 material that are used in our company’s chlorination unit operate at temperatures around 60°C. However, within less than a week of use, the pump impellers became corroded. Have any other users encountered a similar situation?
The temperature is not high, so a pump made of fluorine material is used. There are many in Jingxian County, Anhui. (This statement is not an advertisement)
This post was last edited by Wang Genrong on 2017-1-11 at 20:13. Since the temperature is not high, polymer material pumps can be used; they are cost-effective. - - -
Since the temperature is not high, corrosion-resistant pumps made of fluorine materials can be used
Switch to a pump; use a centrifugal pump made of fluoroplastic alloy. There are many manufacturers that produce such pumps, and they’re all quite good
During the chlorination reaction, the liquid feed is circulated to participate in the reaction, and the material used for the circulation pump is a titanium-palladium alloy.
H-C won’t work; tantalum is needed, but it’s too expensive. Use carbon steel lined with PVDF instead
We use Hastelloy, but we don’t know the specific grade. It’s been four years in use, and it’s doing great.
C6? It’s probably C-276. The temperature isn’t high, but it depends on the concentration of your medium. . .
Since the temperature is not high, a corrosion-resistant pump made of fluorine materials can be used; consider the specific properties of the medium as well