温度及粉尘特性对飞灰比电阻的影响研究  

Influence of temperature and dust characteristics on ratio resistance of fly ash

作　　者：蔡锡锋 刘含笑 刘毅 周林海 郭高飞 吴金 沈敏超 周冰 Cai Xifeng;Liu Hanxiao;Liu Yi;Zhou Linhai;Guo Gaofei;Wu Jin;Shen Minchao;Zhou Bing(Zhejiang Feida Environmental Science and Technology Co.,Ltd.;Shenhua Guohua(Beijing)Electric Power Research Institute Co.,Ltd.)

机构地区：[1]浙江菲达环保科技股份有限公司 [2]神华国华(北京)电力研究院有限公司

出　　处：《冶金能源》2019年第6期47-53,共7页Energy For Metallurgical Industry

基　　金：国家重点研发计划(2016YFC0209107)

摘　　要：首次采用实验测定和理论预测相结合的研究手段,系统地研究了烟温及粉尘特性对飞灰实验室比电阻、工况比电阻的影响规律。结果表明:在低温区域(<150℃),温度与燃煤飞灰的实验室比电阻、工况比电阻均呈正相关性,高温区域,相关性减弱并呈现负相关性;Li+Na原子质量分数、Fe原子质量分数与飞灰实验室比电阻负相关,且前者相关性大;Mg+Ca原子质量分数与飞灰实验室比电阻正相关;水汽含量、SO3浓度值均与飞灰工况比电阻负相关,且前者主要作用于低温区域。进一步分析飞灰比电阻与电除尘性能的关系,提出了基于实验室比电阻的除尘难易性评价方法,为电除尘器的选型设计提供借鉴。The research method of combining experimental measurement and theoretical predictions was used for the first time,the influence law of smoke temperature and fly ash characteristics to laboratory and condition ratio resistivity was studied systemically,which show that in the region of the low temperature(<150℃),the temperature was positive correlation to coal fly ash laboratory and conditions ratio resistivity,and the relationship was negative correlation in the region of high temperature;Li+Na atomic mass fraction and Fe atomic mass fraction were negatively correlated with laboratory ratio resistance,and the former was highly correlated.The atomic mass fraction of Mg+Ca was positively correlated with the laboratory ratio resistance.The water vapor content and SO3 concentration were negatively correlated with the conditions ratio resistance,and the former mainly acts on the low temperature region.Further analyzed between the fly ash ratio relationship resistance and electric performance,the dust removing difficulty evaluation method based on laboratory ratio resistivity was proposed,which serve as a reference for the design of electric precipitator(ESP).

关 键 词：燃煤电厂 实验室比电阻 工况比电阻 电除尘器 

分 类 号：G63[文化科学—教育学]