Battle with Ferrous Chloride Corrosivity!! 1

[Grovest]

I am trying to find a pipe material and/or pipe liner which is resistant to Ferrous Chloride. We are working with 10% and have found that most materials need replacing in a matter of a few days.

 

[tblaser]

Dear Grovest:

You did not mention the temperature and pressure.

I have used teflon-lined steel for up to 40% ferric chloride (FeCl3) with good results. You are looking at exotic materials for pure metal resistance. Ferric chloride will attack most comon metals. I believe Ferrous chloride to be slightly less aggressive, but do not know for sure.

If the temperature and pressure are low enough, plastics such pvc,cpvc or fiberglass materials could provide a cheaper option.

Tim

 

[ghopkins]

Dear Grovest:

For pipe and vessels, fiberglass with and epoxy vinyl ester resin would be the most economical choice. This type of equipment has been used in the steel pickling industry for decades with good service life.
For more information, just ask.

Greg
ghopkins@rl-industries.com

 

[rolledalloy]

If you require a metallic pipe material you depending on the temperature alloys stainless steels or nickel alloys with high percentages of molybdenum can be potential solutions.

A 6% moly stainless such as AL-6XN would be one such alloy. If the temperatures are much beyond ambient a higher moly alloy like alloy c-276 (16% moly) would be more resistant.