Abstract

The application of a bipolar corona discharge for the electrical purification of gases is considered. The design and operation principle of the developed unit based on the simultaneous use of centrifugal and electrostatic forces for the trapping of solid particles are described. The charge distribution in the field of the bipolar corona is illustrated. Electrodes of different polarity with a small radius generate a bipolar corona discharge, passing through which some of the particles are charged positively, while others are charged negatively. This promotes a more intense coagulation process, owing to which the level of gas purification increases under the action of centrifugal forces. Particular attention is paid to the testing results of a centrifugal electrostatic precipitator to assess its efficiency. The experiments have been conducted using a D242 diesel engine that acted as a “generator” of a gas flow containing solid particles of soot. A current–voltage curve has been plotted for the electrostatic precipitator prototype, and the mass concentration of pollutants depending on the diesel power has been experimentally obtained. The experimental data have confirmed that the centrifugal electrostatic precipitator for gas purification from solid particles is highly efficient.

中文翻译：

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使用双极电晕放电进行气体的静电净化

摘要

考虑了将双极电晕放电用于气体的电净化。描述了同时使用离心力和静电力捕获固体颗粒的已开发单元的设计和操作原理。示出了双极电晕场中的电荷分布。具有较小半径的不同极性的电极会产生双极电晕放电，通过该放电，一些粒子带正电，而其他粒子带负电。这促进了更强烈的凝结过程，因此，在离心力的作用下，气体净化水平提高了。要特别注意离心式静电除尘器的测试结果，以评估其效率。实验是使用D242柴油机进行的，该柴油机充当包含烟灰固体颗粒的气流的“发生器”。已为静电除尘器原型绘制了电流-电压曲线，并通过实验获得了取决于柴油功率的污染物的质量浓度。实验数据已经证实，用于从固体颗粒中净化气体的离心式静电除尘器是高效的。