文献类型：期刊文献

英文题名：PM1.0 removal enhancement in cooperated electric-ionic field by negative air ions carbon fiber electrode

作者：Tao, Shanlong[1];Zhu, Yong[2];Chen, Mingxia[1];Shangguan, Wenfeng[1]

机构：[1]Shanghai Jiao Tong Univ, Res Ctr Combust & Environm Technol, Sch Mech Engn, Shanghai 200240, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2025

卷号：355

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20243717034657);WOS:【SCI-EXPANDED(收录号:WOS:001314849600001)】；

基金：This work was supported by the National Key Research & Develop-ment Plan (2017YFC0211804) and the National Natural Science Foun-dation of China (22176123, 52200130) .

语种：英文

外文关键词：Carbon fiber electrode; PM1.0; Negative air ions; Cooperated electric-ionic field; Capture enhancement

摘要：The study focuses on improving the removal efficiency of submicron particles using negative air ions (NAIs), which are challenging to remove. To enhance this efficiency, cascaded carbon fiber tubular (CFT) chargers were designed to boost particle charging. Through experiments and numerical simulations, the chargers' enhancement mechanisms, cooperation effects, and overall performance were evaluated. The optimal configuration for the CFT charger was identified as a gap distance (d =2.0 r(0))and grounded electrode length (L0/ =4 pi r(0)/3)that ensures high collection efficiency (96.7 % for 0.5 mu m particles at 4 m/s) and ultra-low ozone generation (7.25 ppb). The study found that while the average electric field strength (E) and ion density significantly influence charging, an un-usual improvement in collection efficiency was observed the charger with d =2.0 r(0) at u =3 m/s, likely due to the potential predominance of the maximum electric field strength (Emax) at relative higher velocity. Besides, the CFT charger demonstrated balanced performance compared to other reported works, although higher relative humidity (80 +/- 5 % RH) inhibits removal efficiency, which can be mitigated by reducing gas velocity.