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Carbon steel + 0Cr13 composite plates, Cr-Mo steels (such as Cr5Mo), 300 series stainless steels, etc., are key materials commonly used for protecting distillation towers against high-temperature sulfur corrosion; they can effectively resist corrosion in sulfur-containing media at temperatures above 240°C. Based on the characteristics of high-temperature sulfur corrosion, material selection requires special attention to chromium (Cr) content and structural design. The following are the main protective materials and their application scenarios: Carbon steel + 0Cr13 composite plate: Carbon steel provides strength, while 0Cr13 martensitic stainless steel serves as the corrosion-resistant lining layer; this combination offers both cost-effectiveness and resistance to sulfur corrosion, and it is widely used in the shells of distillation towers in the processing of high-sulfur crude oil. Cr-Mo steels (such as Cr5Mo, 15CrMoR): Suitable for high-temperature environments, they possess good resistance to sulfide corrosion and are commonly used in critical components such as heating furnace tubes and oil transfer lines. 300 series austenitic stainless steels (such as 321, 316L, 0Cr18Ni10Ti): They perform excellently in areas subject to severe sulfur corrosion or intense erosion (such as elbows and heat exchanger tubes), and are particularly suitable for conditions with high fluid flow rates or the presence of hydrogen. Aluminized carbon steel material: used for tower internals and heat exchanger tubes, it enhances the surface’s resistance to oxidation and sulfur corrosion. Furthermore, maintaining a silicon (Si) content of not less than 0.10% in carbon steel can also significantly slow down the corrosion rate, preventing premature failure due to material defects.