Material selection for the stirring tank of hot caustic soda solution
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This post was last edited by qq283953037 on 2011-11-28 09:02. I would like to ask the experts: What material should be used for the main body of the mixing tank for hot caustic soda solutions (at a temperature of 150 degrees Celsius and a concentration of 10%)? I hope experienced experts can offer some guidance! Thank you!
It is recommended to use 316L stainless steel, making sure to take into account the issue of alkali embrittlement.
It is recommended to use stainless steel; what was mentioned on the 2nd floor is sufficient, but be sure to leave enough margin for corrosion resistance! The corrosiveness of caustic soda is obvious to all!
Thank you for the answer from above! I’m also considering using 316L material, but I’m not sure about its corrosion resistance against a 10% caustic soda solution at 150 degrees Celsius； The use of Q235-B+Ta2 (a titanium composite sheet with 2mm of titanium) was also considered; the results would likely be good, but the economic cost would be very high.
Titanium-stainless steel composites are better; using 316L leads to easy corrosion in areas where temperatures are high
Reply 1# qq283953037 http://bbs.hcbbs.com/viewthread.php?tid=704085&page=1&extra=#pid4048488
I’ve learned it! Thank you to the original poster for the insightful explanation!