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This post was last edited by Steven_p0kTk on 2026-3-11 09:00. In the field of biomass gasification coupled with green hydrogen production to manufacture green alcohols and oils, a key technical bottleneck is being successfully overcome—that of how to efficiently purify biomass exhaust gases containing over 90% CO2, as well as H2S and organic sulfur (COS) The GLT complexed iron wet oxidation desulfurization technology provides a mature, reliable, and cost-effective purification solution to address the challenges faced by this industry, ensuring that the gases at the source of the green industrial chain are \"pure and defect-free\". New challenges in industry purification: Biomass gasification exhausts, which consist of high levels of CO₂ and various forms of sulfur, represent valuable hydrocarbon resources. However, the extremely high CO₂ concentration (>90%) along with the complex forms of sulfur (H₂S + COS) pose a dual challenge to traditional purification processes: · The difficulty of selective absorption: In the presence of high concentrations of CO₂, it is necessary to remove H₂S accurately, avoiding simultaneous absorption of CO₂, in order to control the amount of solution that needs to be recycled and the energy required for its regeneration. · Bottleneck in organic sulfur removal: Trace amounts of COS (carbonyl sulfide) have stable chemical properties, making it difficult to remove them effectively using conventional wet desulfurization methods. However, advanced hydrogen production and synthesis catalysts used downstream are highly sensitive to total sulfur levels, including COS, requiring deep purification to ppb levels. · Balance between economy and environmental protection: The process must meet the highest standards of purification, while also featuring low operating costs, a high sulfur recovery rate, and being clean and pollution-free. Guolitong GLT technology: A comprehensive solution to the challenge of removing complex sulfur compounds. Through special design and process optimization, the GLT technology boasts excellent capabilities for simultaneously and efficiently removing H₂S and COS in high CO₂ environments: 1. Outstanding selectivity for H₂S and the ability to hydrolyze COS. Its unique catalytic system enables preferential and rapid catalytic oxidation of H₂S, while also promoting the hydrolysis of COS (COS + H₂O → H₂S + CO₂), thereby producing H₂S that can be easily removed and achieving indirect and efficient elimination of organic sulfur compounds. This feature eliminates the complexity and cost associated with adding additional dedicated hydrolysis reactors. 2. Deep purification to ensure the safety of downstream processes. This technology enables the complete removal of H₂S and COS, as well as the total sulfur content in the feed gas, to levels below 5 ppm in just one step. This creates favorable conditions for any subsequent desulfurization processes (such as those using special adsorbents), ensuring that the total sulfur content in the gas fed into the green hydrogen production and alcohol/oil synthesis units meets extremely strict ppb-level requirements. This, in turn, helps to maintain the long-term stable operation of expensive catalysts. 3. Green cycle and resource-based benefits: The entire desulfurization process converts sulfur pollutants directly into high-purity elemental sulfur products, enabling the green recovery and value realization of sulfur resources. There is no secondary pollution in the form of wastewater or waste residues, which perfectly aligns with the principles of circular economy in green production. 4. Strong adaptability and high cost-effectiveness: The system exhibits strong adaptability to fluctuations in gas composition and load, features a high degree of automation, and operates stably. Compared to complex solutions that require multiple stages and a combination of various technologies, the GLT integrated solution features a simpler process, along with lower investment and operational costs.