针对焦炉烟道气温度低、杂质多、含硫范围广等特点，分析了氨法脱硫的工艺原理及其和在焦化厂焦炉烟道气脱硫中的优势，制订了集焦化厂浓氨水利用、烟道气余热回收及直接蒸氨、氨法脱硫、烟囱热备技术为一体的技术方案并实施；采用4层喷淋吸收及2层除雾脱硫塔结构，有效解决了氨逃逸、烟气含水量高、气溶胶堵塞等问题，焦炉烟囱排放的废气SO₂浓度和颗粒物含量均保持在30 mg/m³以下，达到并优于国家标准中50 mg/m³的要求。

The coke oven flue gas has characteristics of low temperature,many impurities and wide sulfur content range.This paper analyzes the process principle of ammonia routine desulfurization method and its application advantages in the coke oven flue gas desulfurization in a coking plant.A technology scheme integrated with technologies of the utilization of concentrated ammonia solution,recovery of waste heat from flue gas,direct distillation of ammonia,ammonia based desulfurization and chimney hot standby is designed and put into practice.The desulfurization tower has four layers for spray absorption and two layers for defogging,which effectively solves the problems of ammonia escape,the high water content in flue gas and aerosol jams.After desulfurization,both SO₂ concentration and particle content in the discharged flue gas remain below 30 mg/m³,meeting and even better than the 50 mg/m³ national discharge standard.