高炉煤气脱氯技术的工艺选择及应用OA

Blast furnace gas(BFG),a primary by-product of iron and steel smelting,re-quires efficient purification as a prerequisite for its recovery and utilization.However,BFG often contains hydrogen chloride(HCl)gas.Failure to remove HCl can lead to corrosion of the gas pipe-line system,salt deposition and scaling on TRT blades,and erosion of the checkered bricks in the hot blast stove regenerator.By comparing the advantages and disadvantages of three BFG dechlorina-tion processes,and considering the continuously developing fine desulfurization technology for BFG in recent years,a combined scheme involving primary dechlorination,a secondary fixed bed,and fine desulfurization was proposed.Practical application demonstrates that a rationally selected de-chlorination process can effectively mitigate equipment corrosion,extend service life,ensure the safe operation of the gas system and desulfurization process,and promote the green and low-carbon development of the iron and steel industry.