摘要
针对日趋严峻的钢铁行业污染问题和日趋严格的排放要求,分析烧结烟气氨法脱硫工艺特点,提出旋流雾化氨法脱硫除尘一体化技术:通过构造喷雾切圆旋流场,在湍流-声波-相变复合凝并作用下,有效控制脱硫塔的出口SO2及粉尘质量浓度。对柳钢110 m^2烧结机脱硫塔进行改造试验,结果表明:在不增装湿电除尘器的情况下,当入口烟气流量和温度大幅度波动时,改造后的出口SO2质量浓度稳定控制在32 mg/m^3以下,出口粉尘质量浓度稳定控制在10 mg/m^3以下。新技术的应用有效脱除了氨法脱硫过程中形成的气溶胶,使烧结烟气氨法脱硫工艺实现了稳定、高效、经济的污染物协同超低排放。
With the increasingly serious pollution situation caused by the iron & steel industry and the consequent emission standards becoming more and more strict,the technological characteristics of the ammonia-based sintering flue gas desulfurization are analyzed,and the integrated technique using swirl atomizing blender for ammonia-based desulfurization and dust collection is presented.In this technique,through constructing a tangential swirl atomizing field,the mass concentration of SO2 and dust at the outlet of the desulfurization column has been effectively controlled under the combined coagulation action of turbulent flow-sound wave-phase change.The technological transformation trial is launched in the desulfurization tower of the 110 m^2 sintering machine in Liuzhou Iron & Steel Co.,Ltd.,which shows that without the installation of the WESP,and when there is a fluctuation by a large margin presentingin gas flow rate and temperatureat the inlet,the mass concentration of the SO2 and the dust at the outlet would be controlled respectively less than 32 mg/m^3 and 10 mg/m^3 after technological transformation.The application of the advanced technique effectively eliminates the aerosol formed during the ammonia-based desulfurization,so a stable,efficient and economic and coordinate ultra-low pollutants emission is achieved.
作者
刘定平
马佩佩
夏松
黎柳升
Liu Dingping;Ma Peipei;Xia Song;Li Liusheng(School of Electric Power Engineering,South China University of Technology,Guangzhou 510640,Guangdong;Guangdong Essen Environmental Technology Co.,Ltd.,Guangzhou 510640,Guangdong;Sintering plant of Liuzhou Iron&Steel Co.,Ltd.,Liuzhou 545002,Guangxi)
出处
《烧结球团》
北大核心
2020年第2期51-55,60,共6页
Sintering and Pelletizing
基金
国家自然科学基金资助项目(51576072)。
关键词
氨法脱硫
超低排放
烧结烟气
脱硫除尘
旋流雾化
ammonia-based desulfurization
ultra-low emission
sintering flue gas
desulfurization and dust collection
swirl atomizing
