中国电力2018，Vol.51Issue(5)：134-140,7.DOI:10.11930/j.issn.1004-9649.201706151
管束式除雾器结构优化数值模拟及高效除雾器研制
Numerical Simulation on Tube Bundle Demister and Development of High Efficiency Demister
摘要
Abstract
The computational fluid dynamics (CFD) method is used to simulate numerically the two-phase gas-liquid flow in tube bundle demister of wet flue gas desulfurization (WFGD) system for ultra-low dust emission.The double tube structure is introduced into the tube bundle demister.In addition,by modifying the parameters of the tube structure and the blade structure,the effects of structural parameters of the tube bundle demister on demisting efficiency and pressure loss are investigated.The results show that the double tube structure with multistage-series can effectively improve the demisting efficiency,especially for small droplets.The variation of outlet angle,leaf length and leaf number of curvilinear blade have significant impacts on the efficiency of fog removal and pressure drop.On this basis,three types of high-efficiency tube bundle demister are further proposed and then verified by virtue of cold test bench,with one of the optimized prototype applied in the retrofit of the demister of 300 MW power plant.The operation results exhibited satisfactory performance with the mass concentration of soot emission lower than 5 mg/m3(dry base,6％O2) under 50％～100％ unit load while the max resistance below 300 Pa under full load operation.关键词
管束式除雾器/数值模拟/烟气脱硫/除雾效率/烟尘超低排放Key words
tube bundle demister/numerical simulation/flue gas desulfurization/demisting efficiency/dust ultra-low emission分类
资源环境引用本文复制引用
邱桂芝,张志刚,宋寅,郭婷婷,王海刚,贾嘉,王鹤麒..管束式除雾器结构优化数值模拟及高效除雾器研制[J].中国电力,2018,51(5):134-140,7.基金项目
中国大唐集团多污染物协同脱除与均衡控制关键技术研究与示范项目(CDT1-17-02).This work is supported by Research and Demonstration Project of Key Technology for Multiple Pollutants Removal and Balance Control of Datang Group (No.CDT1-17-02). （CDT1-17-02）
