传统的过滤式除尘技术对PM2.5难以高效脱除，利用电场力强化过滤式除尘技术已成为PM2.5高效脱除的重要研究方向。文中综述了电场力强化过滤式除尘技术的研究进展，包括颗粒床、陶瓷管、金属网除尘等耐高温除尘技术和纤维除尘、电袋复合除尘等中低温除尘技术，分析了电场强化组合方式、电场类型、电场强度等对除尘的影响。研究表明，利用电场力强化过滤有效地提高了过滤效率，荷了电的粉尘形成的滤饼疏松，降低了压降，粉尘预荷电+滤层加电场的组合方式的过滤效果最佳。最后指出450～800 ℃温区的粉尘荷电技术是还需研究的问题，提出电场强化多层滤料颗粒床是高温除尘领域的重要研究课题。

Conventional filterbased dedusting technologies cannot effectively remove particulate matter of diameter <2.5 μm (PM2.5).The use of electric field enhancement for filterbased dedusting techniques has become an important research direction to develop efficient PM2.5 removal methods.In this paper,we summarize the research progress on electric field enhanced granular beds,ceramic tubes,metallic mesh,and other dedusting techniques that are applicable at high temperatures.We also summarize the developmental status of electric fieldenhanced fiber dedusting,electric bag composite dedusting,and other lowmedium temperature dedusting techniques.Furthermore,we analyze the effects of electric field enhancement combinations,types of electric field,as well as electric field intensity on dedusting.The study shows that the use of electric field enhancement for filterbased dedusting techniques can effectively improve the filtration efficiency.The pressure drop is reduced because the dust cake formed by the charged dust is loose,and the combination of dust precharging and addition of an electric field at the filter layer has the best filtration effects.In the final section of this paper,it put forward that there is still a need to further study the dust precharging techniques at 450~800 ℃ for high temperature dedusting,and that electric field enhancement of multiple layers of granular bed filters is also an important research direction in the field of high temperature dedusting.

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国家重点研发计划项目（2016YFC0205800）；国家高技术研究发展计划(863)（2008AA05Z205）；浙江省新苗人才计划（2018R405077）