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This post was last edited by Steven_p0kTk on 2026-6-9 08:44. As environmental regulations in the coking industry become increasingly stringent, the desulfurization and purification of coke oven gas during the coking production process is also a crucial aspect that needs to be controlled. In this context, the development of wet oxidation desulfurization technologies for coke oven gas plays an important role in helping the coking industry meet environmental standards as well as achieve energy savings and carbon reduction. Compared with cobalt-based catalysts represented by PDS, iron-based catalysts represented by complexed iron have significant advantages in terms of desulfurization efficiency, practical sulfur capacity, and sulfur recovery rate; they can help coking enterprises save energy, reduce consumption, and expand operational capacity in the process of gas desulfurization. In recent years, they have been increasingly adopted in practice. At the beginning, the entire industry involved simply the replacement of catalysts. This stage was characterized by a very rough approach: there were various types of catalysts, and their properties were difficult to stabilize. Nevertheless, it was possible to meet the demand for higher levels of desulfurization and purification, as well as to reduce the amount of desulfurization waste generated. However, due to issues such as catalyst stability and process incompatibility, the simple replacement of catalysts has led to problems like blockages in desulfurization filler towers, excessive liquid discharge, and the ability to produce only valueless sulfur paste, thereby severely hindering the widespread use of high-performance catalysts. However, technological development cannot be achieved overnight, and the adoption of technology progresses step by step. The GLT zero-waste desulfurization technology developed by Wuhan Guolitong Company for the purification of coke oven gas addresses the issue of continuous and stable operation in existing HPF desulfurization systems that use complexed iron catalysts, through adaptive modifications carried out as the catalysts are continuously optimized; this technology has been tested on multiple industrial-scale installations. https://omo-oss-image.thefastimg.com/portal-saas/new2022030217563727176/cms/image/446318e1-92fb-4993-ba64-dd03e442cd71.png Composite iron catalysts have reached a new stage in the desulfurization and purification of coking gas, and this is fundamentally different from simply replacing the existing catalysts. In addition to the continuous optimization and improvement of the catalyst system itself, adaptations and upgrades are also necessary to match it with the HPF-based desulfurization system. This is done to achieve a proper material balance within the entire desulfurization system, thereby ensuring the long-term stable operation of the gas desulfurization and purification equipment. It also helps companies achieve real cost reductions and increased efficiency, as well as social benefits in terms of energy savings and carbon reduction.