【Ten Years of Rapid Development in Chemical Engineering Equipment】Major breakthroughs were achieved in the pilot-scale research on flue gas sulfur production technology from 1990 to 2024

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Safety first. Prevention first – let’s give praise and support to the achievements made in China’s chemical engineering technology and equipment. **********************【Ten Years of Rapid Development in Chemical Engineering Equipment】Regular updates and summaries are available; feel free to join the discussions at https://bbs.hcbbs.com/thread-3576046-1-1.html (Source: Haichuan Chemical Engineering Forum) ***************** On November 3, 2024, ENFI in China achieved a major breakthrough in its independently developed technology for converting sulfur dioxide in flue gas into sulfur through carbothermal reduction: the pilot plant using this technology was able to produce sulfur in tonnage amounts, with a purity of 99.96%. The quality of this sulfur met the standards for high-grade industrial sulfur (GB/T2449.1-2021), making it suitable for use in various industries such as fertilizers, textiles, rubber, pharmaceuticals, and military applications. This technology addresses the challenge of storing and transporting sulfuric acid, a by-product from traditional non-ferrous metal smelters, by using carbon-based reducing agents to directly reduce sulfur dioxide in smelting flue gases to produce sulfur. It features a short production process, low costs, high quality, and strong adaptability. The short process is characterized by the fact that there is no need to concentrate low-concentration sulfur dioxide during the manufacturing process, and secondary purification is not required to produce sulfur ； The low cost is reflected in the fact that the cost of raw materials for this process is more than 30% lower than that of the natural gas reduction process ； High quality is reflected in the fact that the sulfur products are of top grade and can directly meet sales requirements ； Its strong adaptability is reflected in the fact that the application of this technology is not restricted by factors such as location, climate, or energy sources. The technical pilot study was supported by the major R&D project “181 Plan” of China MCC. The breakthrough achieved in pilot-scale testing means that ENFI of China has taken the lead worldwide in mastering the core technology for producing sulfur from flue gas, which features independent intellectual property rights. This technology provides a new approach for dealing with flue gas containing sulfur dioxide, and it offers a revolutionary solution for reducing the volume of bulk solid wastes such as desulfurization gypsum at the source and enabling their reuse.