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Dear experts, I would like to ask what type of materials should be used for reactors and storage tanks in an environment with high temperatures (around 250°C) and high chloride levels (without pressure), excluding glass
In high-temperature (around 250°C) and high-chloride environments, you need to choose materials with strong corrosion resistance as well as the ability to withstand high temperatures. Generally speaking, the following materials may meet your needs: 1. **Titanium and titanium alloys**: Titanium exhibits excellent corrosion resistance to chlorine as well as to most acidic and alkaline environments, and it remains stable at temperatures of up to 250°C. But the cost is high. 2. **Hastelloy** (such as C-276, C-22): Hastelloy exhibits good corrosion resistance to a variety of chemicals, especially in high-temperature and corrosive environments. These alloys have excellent chlorine resistance, but their cost is also relatively high. 3. **Super duplex stainless steels** (such as 2507): Compared to ordinary stainless steels, super duplex steels exhibit better corrosion resistance and strength, especially in chloride-containing environments. 4. **PTFE (polytetrafluoroethylene) coating or lining**: Although it is not a metal material, PTFE possesses excellent chemical stability and high heat resistance, and can be used as a lining material for reaction vessels and storage tanks to improve corrosion resistance. Suitable for applications with temperatures not exceeding 250°C. When selecting appropriate materials, in addition to considering corrosion resistance and temperature resistance, cost, processing difficulty, and the specific operating conditions of the equipment also need to be taken into account. It is recommended to have in-depth discussions with professional chemical equipment suppliers or engineers to determine the most suitable material choice. .
Titanium 17 is preferred; Titanium 2 is also acceptable
For the ammonium perchlorate project, we use material 2507; a better option is titanium
It’s like this: I’m currently working with molten salts at temperatures above 200°C, and in such conditions, neither 2507 nor titanium materials perform well