旋转喷雾半干法烟气脱硫技术的开发和应用

Development and Application of Flue Gas Desulfurization Technology with Rotating Spray Semi-dry Process

济钢国际在对比国内外脱硫技术、分析烧结机烟气特点,以"以废治污、副产物资源化利用"为基本点,引进、消化、再创新,开发了旋转喷雾半干法脱硫技术,主要包括脱硫除尘系统,脱硫剂(石灰粉)贮存及浆液制备供给系统,脱硫灰输送、循环及外排系统和排空系统等。该技术在济钢400m2烧结机应用投产后,实现了与烧结机生产100%的同步作业率,外排烟气SO2浓度低于200mg/m3,吨烧结矿治污费用约6.9元/t。

Through comparing the desulfurization technology and analyzing the characteristics of sintering machine in the domestic and foreign markets, Jigang International Engineering and Technology Co., Ltd developed the flue gas desulfurization technology with rotating spray semi-dry process. ＂Control the waste pollution, utilize the byproducts resource＂ is used as its basic point of this technology. This technology mainly includes the desulphurization and dust removal system, the desulfurizer （lime powder） storage and slurry supply system, the desulfurization ash conveyor, circulation, efflux and evacuation system. This technology was put into use in the 400 m2 sintering machine of Jinan Iron and Steel Group, It achieved 100% synchronous operating rate with sintering machines, concentration of SO2 in efflux flue gas is less than 200 mg/m3, pollution control cost of sinter is about 6.9 Yuan/t.