Materials for frozen saline equipment
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I am working on a project in which the media inside the equipment are isopropyl alcohol and toluene; the equipment is equipped with a stirrer. Outside the equipment, there is a semi-tube jacket, and frozen brine at -10 to -15 degrees Celsius (containing CaCl2) flows through this jacket. The client requires that both the cylinder and the semi-tube jacket be made of 316L material. I’m not sure if this material choice is appropriate; I would appreciate advice from those with experience in this area. Thanks
316 should be fine against chloride ions. The problem is that the temperature is a bit low. But it should be possible overall
316L is unaffected by chloride corrosion
316L probably won’t work; titanium is generally used instead
May I ask the moderator, what is the basis for your statement that it cannot be used? Is there any manual where I can find this information? The owners said they have used 316L without any problems, and I couldn’t find any data indicating that 316L cannot be used.
Our company currently uses 316L materials, mainly for spiral plate condensers. Since March 2008, no major issues have been found. According to experienced employees, they generally last for 2–4 years (with a wall thickness of 2–3 mm), and leaks always occur at the welds. I hope this helps you.