There are currently several domestic design institutes and environmental protection companies working on complex iron desulfurization technology. Due to the technical and economic advantages of complex iron desulfurization, it is gradually accepted by various industries. The GLT complex iron desulfurization technology developed by Wuhan Guolitong has been successfully applied in the fields of petrochemical industry, viscose tail gas, natural gas, coke oven gas desulfurization and other fields. In particular, the GLT-01A/B type complex iron desulfurization catalyst developed by it is used for The agent system that directly replaces PDS desulfurization does not require any changes in the device. It can eliminate the discharge of waste liquid and increase the desulfurization accuracy. It has been used in many coking plants, and this technology is at the leading level in the country.