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Preventing Corrosion from sulfuric Acid 98% at 300 °C




Q. Hi,

I am a Technical Engineer at Small Constructing Company in Egypt. We want to make a Container that will be filled with sulfuric Acid 98% at 250- 300°C (Maximum 300 °C). There is Also AGITATION with a propeller at 30 rpm. ... we tried Cast Iron but it WAS corroded so fast. We searched for other materials , but there seems that this is a difficult situation , So can you help .

Thank you in advance for your help.

Best Regards,

Eng. Waleed Said Abul Makarem
- Cairo, Egypt
2003


"Sulfuric acid Handbook"

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A. Tantalum is the metal of choice for tough hot sulfuric conditions. Specially if water or moisture from air cannot be avoided. Very expensive but very reliable.

Guillermo Marrufo
Monterrey, NL, Mexico
2003


A. Did you consider plastic tanks? I think that would me a much more economic alternative and is available in the Egyptian market. You might also want to consider using a vertical pump with eductor nozzle agitation to replace the conventional mixers. The pump and eductors could be PVDF, for example, and provide an economic non-metallic solution contact system.

Let me know how you decide to handle your problem.

Khaled

Khaled El-Sharkawy
- Cairo, Egypt
2003




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