Can stainless steel storage tanks be used as mixing tanks for ALCL3?
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Can stainless steel storage tanks be used as tanks for preparing ALCL3? The tank I used for preparing ALCL3 in my flue gas desulfurization system started leaking after a short time of use. Could this be due to an inappropriate choice of material?
This really isn’t possible, as chloride ions are present. Aluminum chloride contains free chloride ions, and its aqueous solution already contains chloride ions, which can cause corrosion to ordinary stainless steel. Plastic can be used. Or a better stainless steel material can be used, but the cost is higher.
Ordinary stainless steel cannot withstand high concentrations of chloride ions
The raw materials for our company’s PTFE, PVDF, PFA, MF, ECTFE, and FEP are produced by renowned foreign fluoroplastic companies, while the sheets are manufactured by well-known foreign industrial plastic manufacturers as well as Swiss engineering plastic companies. • Type: Corrosion-resistant storage tank • Material: Steel tank with plastic lining • Brand: Huahao • Model: As per drawings • Capacity: 50 (m3) • Weight: 1000 (kg) • Suitable for: Corrosive liquids • Specification: 1000–2000 (m) • Height: 2 • Customization available: Yes. The specific features of tanks with fluoroplastic lining (corrosion-resistant lining) are as follows: 1. Resistant to strong acids and strong bases; pH range of 1–14. 2. It can resist the penetration of small molecular gases, including oxygen, carbon dioxide, chlorine, and chlorine oxides. 3. High purity; the precipitation rate is extremely low, meeting the purity requirements of the photovoltaic industry. 4. Excellent electrical properties. 5. Wide operating temperature range, from ultra-low temperatures to 150°C. 6. Good weather resistance. 7. Flame retardant (oxygen index greater than 52%), and less prone to burning than traditional fluoroplastics. 8. Its surface is extremely smooth; it has the smoothest surface among all fluoroplastics, with a very low coefficient of friction. 9. Strong mechanical properties: it is harder and more robust than traditional fluoroplastics, with improved wear resistance.
The material of my storage tank is 304; is 316L acceptable?
316 is better than 304, but it still won’t work in the long run. Ordinary stainless steel is sensitive to chlorine.
That type of stainless steel has good resistance to chloride ions. So, what kind of material should be used for storage tanks like ours?