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Tangshan Lvyuan Environmental Protection Technology Co., Ltd. employs a desulfurization technique based on complexed iron, which is a wet oxidation method that uses complexed iron as a catalyst to remove hydrogen sulfide. This technique features the direct conversion of H2S in gases into elemental sulfur; after treatment, the H2S content in the gas is less than 10 ppm. It represents a new type of desulfurization technology that is simple to operate, has a high sulfur capacity, and is environmentally friendly with no generation of waste substances. It overcomes the serious drawbacks of traditional desulfurization methods, such as low sulfur capacity, complex processes, and secondary environmental pollution. The sulfur recovery rate exceeds 99.9%, making it an effective environmental protection solution for enterprises dealing with biogas, natural gas, and chemical process emissions. This technique involves the use of complexed iron solvents in reaction towers, where these solvents come into direct contact with hydrogen sulfide-containing gases through bubbling and spraying, thereby triggering chemical reactions. https://pics2.baidu.com/feed/b8389b504fc2d562058f46acf86bd4ff77c66c72.jpeg@f_auto?token=b0948c753be0e4a6b4311411d65dd530 Combined iron desulfurization has the following characteristics: 1. High sulfur capacity. The dynamic sulfur capacity of this desulfurizer can reach 3%-5%, whereas the sulfur capacity of PDS desulfurizers currently in use on site is generally below 0.5%. 2. The absorption reaction rate is fast, 3-5 times that of ordinary desulfurizers. 3. It has good selectivity, and carbon dioxide has little impact on the absorption reaction of the desulfurizer. 4. Fast regeneration speed: This product features an extremely fast regeneration speed; the reaction is generally completed within just a few seconds. The conventional desulfurization fluids used in practice have always presented challenges in terms of regeneration speed, and this desulfurization fluid overcomes the limitations associated with the regeneration speed of traditional ones. The reaction time for this design is 50 seconds, which is already quite conservative. 5. Strong temperature adaptability. Under environmental conditions of 20–55°C, the efficiency of the absorption reaction and the regeneration reaction remains largely unchanged. 6. Good stability. Since both the absorption and regeneration processes are primarily chemical reactions, the absorption efficiency is high, the regeneration speed is fast, and no sulfides are distilled off during the regeneration process. 7. Low corrosivity, with a corrosion rate of 0.023 mm/year. 8. Low wear rate. Throughout the entire system, only a small amount of liquid loss occurs, as some liquid is carried away during the separation of sulfur particles. 9. The solid and liquid are easy to separate. During the regeneration process, the sulfur particles produced are large, requiring a relatively simple separation process. 10. No secondary pollution. During operation, no liquid or solid waste is generated apart from sulfur, thus avoiding secondary pollution.