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Inlet Particle-Sorting Cyclone for the Enhancement of PM_(2.5) Separation

机译：入口颗粒分级旋风分离器，用于增强PM_（2.5）分离

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摘要

Many cities are suffering from severe air pollution from fine particulate matter. Cyclone is an effective separator for particulate pollutant but has low efficiency for those with an aerodynamic diameter of 2.5 µm or less (PM_(2.5)). In this research, four novel inlet particle-sorting cyclones were first developed to enhance the separation of PM_(2,5). The energy consumption, overall separation efficiency, particle grade efficiency,outlet particle concentration and size distribution were compared with common cyclone (CM-C). It was found that the vertical reverse rotation cyclone (VRR-C), which made the smaller particles enter cyclone from radially outer side and axially lower side at the rectangular inlet, had the best separation performance, especially for PM_(2.5) separation. The mean diameter of inlet particles was 15.7 µm and the particle concentration was 2000 mg/m~3, the overall separation efficiency of the VRR-C reached 98.3%, which was 6.496 higher than that of CM-C. PM_(2.5) grade efficiency of the VRR-C exceeded 80%, which was 15~20% higher than that of CM-C. The PM_(2.5) content at the VRR-C outlet was 30.8 mg/m3, while that of CM-C was still 118.4 mg/m~3. The novel inlet particle-sorting cyclone is an effective separation enhancement for PM_(2.5) source control in the process of industrial production and environment protection.
机译：许多城市都受到细颗粒物的严重污染。旋风分离器是一种有效的颗粒污染物分离器，但对于空气动力学直径小于或等于2.5 µm的气体而言，效率较低（PM_（2.5））。在这项研究中，首先开发了四个新颖的​​入口颗粒分选旋风分离器，以增强PM_（2,5）的分离。与普通旋风分离器（CM-C）比较了能耗，总分离效率，颗粒级效率，出口颗粒浓度和粒度分布。发现垂直反向旋风分离器（VRR-C）具有更好的分离性能，尤其是对于PM_（2.5）分离而言，该垂直分离旋流分离器使较小的颗粒在矩形入口从径向外侧和轴向下侧进入旋风分离器。入口颗粒的平均直径为15.7 µm，颗粒浓度为2000 mg / m〜3，VRR-C的总分离效率达到98.3％，比CM-C高6.496。 VRR-C的PM_（2.5）级效率超过80％，比CM-C高15〜20％。 VRR-C出口处的PM_（2.5）含量为30.8 mg / m3，而CM-C的PM_（2.5）含量仍为118.4 mg / m〜3。新型入口颗粒分选旋风分离器是工业生产和环境保护过程中PM_（2.5）源控制的有效分离增强。

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  • 来源
    《Environmental Science & Technology》 |2017年第3期|1587-1594|共8页
  • 作者

    Peng-Bo Fu; Fei Wang; Xue-Jing Yang; Liang Ma; Xin Cui; Hua-Lin Wang;

  • 作者单位

    State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, 200237, P. R. China;

    State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, 200237, P. R. China;

    State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, 200237, P. R. China;

    State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, 200237, P. R. China;

    Sh anghai Huachang Environmental Protection Co. Ltd., Shanghai, 201611, P. R. China;

    State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, 200237, P. R. China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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