泰钢180m^2烧结机烟气脱硫工艺探讨与实践

通过几种脱硫工艺的比较,认为泰钢180m2烧结机更适于采用旋转喷雾干燥（SDA）脱硫工艺。SDA工艺利用喷雾干燥原理,将石灰浆液经过高速旋转的喷雾装置,雾化成细小的液滴,在吸收塔内与烟气中的SO2反应。泰钢依据烧结烟气特点,选择了脱硫设备的型号及参数,工程投产后,脱硫效果明显,烟气中SO2浓度由1200～1400mg/m3降至200mg/m3以下。

Flue-gas Desulphurization Process Discussion and Practice of 180 m2 Sinter Machine in Taishan Steel

Through the comparison of several desulphurization processes,rotation-spraying drying（SDA） desulphurization process was considered more suitable for flue gas desulphurization of Taishan Steel＇s 180 m2 sinter machine.According to the spraying drying theory of SDA process,the lime serum atomized into fine liquid drop through high speed rotating spraying drying device then reacted with the SO2 in flue gas in absorbing tower.According as the characteristics of the flue gas,Taishan Steel selected the type and parameters of the desulphurization equipment.After putting into production of the project,desulphurization effect was obvious and the concentration of SO2 in flue gas was reduced from 1 200 to 1 400 mg/m3 into 200 mg/m3 below.