Zhifan Zhang, Lin Zhang, Gang Yang, Xi Zhang, Chengman Zhou, Jiayong Wu, Hongwei Qian, Hanqing Shao, Jiakai Zhang
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引用次数: 0
Abstract
Tube electrofiltration equipment is mainly used to remove fine particles from exhaust gases and separate them from the emission source. In this paper, we study the flow field characteristics and dust removal efficiency of tubular electrofiltration equipment through numerical simulation. The multi-field coupling model of tubular electrofiltration equipment can be used to investigate the internal ion wind (EHD flow) of tubular electrofiltration equipment and its impact on dust removal efficiency. Furthermore, this approach can also be used to evaluate the particle motion trajectory and its impact on dust removal efficiency in tubular electrofiltration equipment under different particle sizes, air flow velocities, and discharge voltages. The results demonstrate that increasing the airflow rate gradually decreases the influence of EHD flow on the airflow field, the removal effect of particles with size < 6 μm by the EHD flow becomes concealed, and the influence on the overall dedusting efficiency becomes negligible. When the particle size dp and discharge voltage U are increased, the charge elevates and the electric field force strengthens, resulting in particles being guided towards the dust collection electrode and increasing the offset, thus improving the dust removal efficiency. When the gas flow rate u is increased, the offset of particles decreases and the dust removal efficiency declines. The optimal operating conditions for the tubular electrofiltration equipment are U = 45 kV, u = 0.5 m/s, and dp ≥ 6 μm.
期刊介绍：
ASE is an international journal that publishes high-quality papers, communications, and discussion that advance aerosol science and engineering. Acceptable article forms include original research papers, review articles, letters, commentaries, news and views, research highlights, editorials, correspondence, and new-direction columns. ASE emphasizes the application of aerosol technology to both environmental and technical issues, and it provides a platform not only for basic research but also for industrial interests. We encourage scientists and researchers to submit papers that will advance our knowledge of aerosols and highlight new approaches for aerosol studies and new technologies for pollution control. ASE promotes cutting-edge studies of aerosol science and state-of-art instrumentation, but it is not limited to academic topics and instead aims to bridge the gap between basic science and industrial applications. ASE accepts papers covering a broad range of aerosol-related topics, including aerosol physical and chemical properties, composition, formation, transport and deposition, numerical simulation of air pollution incidents, chemical processes in the atmosphere, aerosol control technologies and industrial applications. In addition, ASE welcomes papers involving new and advanced methods and technologies that focus on aerosol pollution, sampling and analysis, including the invention and development of instrumentation, nanoparticle formation, nano technology, indoor and outdoor air quality monitoring, air pollution control, and air pollution remediation and feasibility assessments.
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