2种电除尘优化改造方案模拟及经济性分析
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摘要
中国环境保护部和国家质量监督检验检疫总局联合发布了GB 13223-2014,要求火电厂烟尘排放限值应小于30mg·m~(-3),老式单一的电除尘器已经很难达到环保要求。以某电厂为例,对电除尘器入口处接低低温省煤器和将原静电除尘器改造为电袋复合除尘器的2种优化改造方案进行了模拟,并对2种方案的经济性进行了分析,所得结论可供类似机组在电除尘器改造和设计时参考。
Recently,China's Ministry of Environmental Protection and the State Administration for Quality Supervision,Inspection,and Quarantine( GB 13223-2014) jointly set and released standard requirements for flue dust emission limits. As these stipulate a value less than 30 mg·m~(- 3),it has been very difficult for old,single electrostatic dust collectors to meet the new requirements. Taking a power plant as an example,simulations are performed investigating two optimization schemes for installing a low-temperature coal dust collector at the entrance of an electric dust collector and transforming it to use electrostatic-bag precipitation. The resulting conclusions can be used for reference in the design of similar units.
Recently,China's Ministry of Environmental Protection and the State Administration for Quality Supervision,Inspection,and Quarantine( GB 13223-2014) jointly set and released standard requirements for flue dust emission limits. As these stipulate a value less than 30 mg·m~(- 3),it has been very difficult for old,single electrostatic dust collectors to meet the new requirements. Taking a power plant as an example,simulations are performed investigating two optimization schemes for installing a low-temperature coal dust collector at the entrance of an electric dust collector and transforming it to use electrostatic-bag precipitation. The resulting conclusions can be used for reference in the design of similar units.
引文
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[16]LIU Qi,ZHANG Songsong,CHEN Jianpei.Numerical analysis of charged particle collection in wire-plate ESP[J].Journal of Electrostatics,2015,74:56-65
[17]ZHANG Jianping,XU Dacheng,REN Jianxing,et al.Modeling and simulation of PM2.5collection efficiency in a wire-plate ESP subjected to magnetic field and diffusion charging[J].Environmental Progress&Sustainable Energy,2015,34(3):697-702
[2]LI Zhimin,SUN Fengzhong,SHI Yuetao,et al.Experimental study and mechanism analysis on low temperature corrosion of coal fired boiler heating surface[J].Applied Thermal Engineering,2015,80:355-361
[3]杨钰辰.电除尘器内气固两相流流场的数值模拟研究[D].西安:西安理工大学,2009
[4]李雪梅.电除尘器内部气流分布特性的数值研究[D].吉林:东北电力大学,2009
[5]王为术,路统,陈刚,等.电除尘区低温省煤器烟道导流优化的数值模拟[J].华北水利水电大学学报(自然科学版),2014,35(4):57-60
[6]党小庆.大型电除尘器和袋式除尘器气流分布数值模拟与应用研究[D].西安:西安建筑科技大学,2008
[7]李萌萌.基于CFD对袋式除尘器流场的数值模拟分析[D].武汉:武汉科技大学,2010
[8]高广德,何璐璐.导流板对袋式除尘器流场影响的数值分析[J].煤矿机械,2010,31(12):38-40
[9]祝志芳,曾宇露.电除尘器分布板孔形对气流分布影响的仿真研究[J].工业安全与环保,2012,38(9):31-32
[10]章嵩松.电除尘器内斜气流和均匀气流分布的CFD模拟及优化[D].上海:华东理工大学,2014
[11]蔡竹.基于气流分布板不同开孔率的电除尘器内气粒运动模拟研究[D].武汉:武汉科技大学,2009
[12]张樱.袋式除尘器数值模拟研究[D].北京:华北电力大学,2013
[13]孙超凡,龙新峰,于兴鲁,等.大型电袋复合除尘器均流布置的数值模拟与研究[J].中国电力,2013,46(10):140-145
[14]张静.电袋复合除尘器中气流分布的数值模拟[D].北京:华北电力大学,2009
[15]杨小海.电改电袋复合除尘器的设计与模拟[D].北京:华北电力大学,2013
[16]LIU Qi,ZHANG Songsong,CHEN Jianpei.Numerical analysis of charged particle collection in wire-plate ESP[J].Journal of Electrostatics,2015,74:56-65
[17]ZHANG Jianping,XU Dacheng,REN Jianxing,et al.Modeling and simulation of PM2.5collection efficiency in a wire-plate ESP subjected to magnetic field and diffusion charging[J].Environmental Progress&Sustainable Energy,2015,34(3):697-702
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