我国钢铁行业烧结烟气成分复杂、波动性较大,具有以下特点:一是烟气量大,一吨烧结矿产生烟气在4000~6000m3;二是二氧化硫浓度变化大,范围在400~5000mg/Nm3之间;三是温度变化大,一般为80℃至180℃;四是流量变化大,变化幅度高达40%以上;五是水分含量大且不稳定,一般为10%~13%;六是含氧量高,一般为15%~18%;七是含有多种污染成分,除含有二氧化硫、粉尘外,还含有重金属、二恶英类、氮氧化物 China’s iron and steel industry sintering flue gas composition is complex and volatile, has the following characteristics: First, a large amount of flue gas, a ton of sinter flue gas generated in the 4000 ~ 6000m3; Second, the concentration of sulfur dioxide changes in the range of 400 ~ 5000mg / Nm3; Third, the temperature changes, usually 80 ℃ to 180 ℃; Fourth, the flow changes, the rate of change up to 40% or more; Fifth, the water content is large and unstable, generally 10% to 13%; Sixth High oxygen content, usually 15% to 18%; Seventh, contains a variety of pollution components, in addition to containing sulfur dioxide, dust, but also contain heavy metals, dioxins, nitrogen oxides