Advantages and disadvantages of modular and central-tube stainless steel converters
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Structurally, the converter of the central cylinder has a simple design and is lightweight; it has become quite mature as a result of improvements over the years； There are more modular support columns, giving it a more robust appearance and greater weight; please analyze the advantages and disadvantages of both from a practical usage perspective!
The structural changes are due to differences in the manufacturing process. The central cylinder features central air intake to ensure even distribution of gas across all sections and minimize resistance ； The internal heat exchanger optimizes the thermal expansion of the converter, reducing the area and space required for external heat exchangers; therefore, it is used in large-scale sulfuric acid plants. The modular type is also used in small and medium-sized sulfuric acid plants, offering advantages in terms of production experience, materials, and manufacturing.
Block-type converters are widely used in China, and their structure is quite mature； The central-tube stainless-steel converter is relatively mature; it is used in facilities such as Sanyuan’s 600,000-ton/year sulfuric acid plant, Hongfu’s 2×400,000-ton/year sulfuric acid plants, and Kaipin’s 600,000-ton/year sulfuric acid plant. At the initial stage of its adoption, there was a problem with uneven distribution of the inlet gas temperature.
Reply to 3# Next Life: Some of the central cylinders I’ve seen don’t have air intake at the center either. Additionally, whether it’s possible to save material depends on the specifications of the converter, after all, the size of the central cylinder increases by a significant amount