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首页> 外文期刊>Industry Applications, IEEE Transactions on >Experimental Study of the Corona Discharge in a Modified Coaxial Wire-Cylinder Electrostatic Precipitator
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Experimental Study of the Corona Discharge in a Modified Coaxial Wire-Cylinder Electrostatic Precipitator

机译：改进的同轴线筒静电除尘器中电晕放电的实验研究

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Coaxial wire-cylinder electrode arrangements are widely used for the electrostatic precipitation of dust particles contained in flue gases. The aim of this paper was to evaluate a new design, which was expected to increase the particle collection efficiency. The collector electrode of the several models under study consisted of a cylinder with alternate small- and large-diameter sections. In a first set of experiments, the current–voltage characteristics of each model were compared with those obtained for a standard wire-cylinder electrode arrangement, at both polarities of the high-voltage supply, and for three values of the inlet airflow rate, namely, 0, 4.5, and 6 $hbox{dm}^{3}/hbox{min}$, with the corresponding air velocities in the large-diameter sections being 0, 6.0, and 8.0 cm/s. A second set of experiments showed that the current density distribution inside the models depends on the geometry of the electrode system but is roughly the same at 4.5 and 6 $hbox{dm}^{3}/hbox{min}$. The particle collection efficiency of the different models was evaluated in a third set of experiments, performed with 2-g samples of starch powder, under various operating conditions. Data analysis revealed that the modified precipitators have higher efficiency than the standard model. As expected, for a given geometry of the electrode arrangement, the efficiency was found be lower at higher inlet airflow rates. These findings could serve in the design of new industrial electrostatic precipitators.
机译：同轴线筒式电极装置广泛用于烟道气中所含灰尘颗粒的静电沉淀。本文的目的是评估一种新设计，该设计有望提高颗粒收集效率。几个正在研究的模型的集电极由一个圆柱体组成，圆柱体具有大直径和小直径的部分。在第一组实验中，比较了每个模型的电流-电压特性与在高压电源的两个极性以及三个进气流量值的情况下，从标准的圆柱电极布置得到的电流-电压特性。 ，0、4.5和6 $ hbox {dm} ^ {3} / hbox {min} $，大直径部分的相应风速分别为0、6.0和8.0 cm / s。第二组实验表明，模型内部的电流密度分布取决于电极系统的几何形状，但在4.5和6 $ hbox {dm} ^ {3} / hbox {min} $时大致相同。在第三组实验中评估了不同模型的颗粒收集效率，该实验是在各种操作条件下对2 g淀粉粉末样品进行的。数据分析表明，改进后的除尘器比标准除尘器具有更高的效率。如所预期的，对于给定的电极布置的几何形状，发现效率在较高的入口气流速率下较低。这些发现可用于设计新型工业静电除尘器。

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