本文關(guān)鍵詞： 雙渦旋極板 電除塵器 ESP 數(shù)值模擬 UDF 電場　出處：《高電壓技術(shù)》2017年08期 　論文類型：期刊論文

【摘要】：為了解決電除塵器(ESP)超微細粉塵除塵效率低、設(shè)計參數(shù)不足等問題,設(shè)計了1種改良型的雙渦旋極板電除塵器,收塵極板為改進折點弧度的雙渦旋形式并垂直于氣流方向放置,每排極板前面加了1排電極,并采用ANSYS14.0中的FLUENT流體仿真軟件對電除塵器除塵區(qū)域內(nèi)的流場進行了數(shù)值模擬;設(shè)置了極板高度H、極板排間距d、粒徑dp等影響參數(shù)。模擬結(jié)果表明:這種改良型極板的電除塵器彌補了以往設(shè)計中由于電極和極板間的距離過大而造成的部分區(qū)域電場強度較弱的漏洞;H約為14 mm、d約為110 mm時,收塵區(qū)域能形成較為良好的渦旋氣流;入口平均氣流速度v為3 m/s時,極板縫隙最高氣流速度可達8.8 m/s,極板附近氣流速度可低至0.5 m/s,壓力損失約為260 Pa;顆粒停留時間能增加約3倍。該研究考慮了電場、流場等各方面的因素,使研究科學、準確;這種新電除塵器性能優(yōu)勢十分明顯,為設(shè)計研究和工業(yè)應(yīng)用提供了相應(yīng)的參數(shù)和依據(jù)。
[Abstract]:In order to solve the problems of low dust removal efficiency and insufficient design parameters, a kind of improved double vortex plate electrostatic precipitator was designed. The duplex plate was placed perpendicular to the air flow direction. A row of electrodes is added in front of each plate, and the flow field in the dust removal area of the electrostatic precipitator is numerically simulated by using the FLUENT fluid simulation software in ANSYS14.0. The influence parameters such as the height of the plate, the distance between the electrodes and the diameter DP are set. The simulation results show that the modified ESP can make up part of the area caused by the excessive distance between the electrode and the plate in the past design. When the hole H of weak electric field intensity is about 14 mm / d about 110 mm, A good vortex flow can be formed in the dust collection area, and when the average inlet velocity v is 3 m / s, The maximum airflow velocity of the polar plate slot can reach 8.8 m / s, the air velocity near the polar plate can be as low as 0.5 m / s, the pressure loss is about 260 Pa. the particle residence time can be increased about 3 times. This study takes into account the electric field, flow field and other factors to make the research scientific and accurate. The performance advantage of this new ESP is very obvious, which provides the corresponding parameters and basis for design research and industrial application.
【作者單位】： 江蘇大學環(huán)境與安全工程學院;
【基金】：國家自然科學基金(51278229) 江蘇省六大人才峰會基金項目(JNHB-018)~~
【分類號】：X701.2

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