With the rapid development of economy and the increasingly stringent emission standards, the removal of dust has been a research hotspot. A new type of grounding atomization corona discharge precipitator is designed. During the discharge process, the liquid on the surface of the wire electrode is atomized while the particles are charged, so as to effectively remove the dust. During the experiment, the velocity of air flow is set to 1 m/s and 3 m/s, the flow rate and direction of air flow are changed, and the V⁃A characteristics of atomized negative corona discharge are studied. Secondly, the influence of gas velocity on dust removal efficiency in grounding atomization corona discharge precipitator with 25 mL/min flow rate of the liquid covered on the surface of the wire electrode is studied. Finally, in order to study the dust removal ability for high specific resistance dust by grounding electrode atomization corona discharge technology, cement dust with specific resistance of 1.2×1012 Ω·m is used as high specific resistance dust in reverse gas flow with gas velocity of 1 m/s. The results show that the dust removal efficiency decreases with the increase of gas velocity. The discharge current with the reverse gas flow is larger than that of the forward gas flow when the gas velocity is increased. When the flow rate of the liquid covered on the surface of the wire electrode is 25 mL/min, the current of the negative grounding atomization corona discharge is the largest.The optimum reaction conditions of the grounding atomization corona discharge precipitator are as follows: the flow rate of the liquid covered on the surface of the wire electrode is 25 mL/min when the reverse gas flow rate is 1 m/s. Compared with the traditional dry corona discharge reactor, the grounding atomization corona discharge precipitator has higher dust removal efficiency for high specific resistance dust.

Firstly, the effect of the mechanical centrifugal purifier rotation speed on its own resistance in the case of using a mechanical centrifugal lampblack purifier alone was studied. Secondly, the effect of the mechanical centrifugal purifier rotation speed on the cleaning cycle and the soot purification efficiency of the electrostatic fume purifier was studied under the combined use of the mechanical centrifugal purifier and the electrostatic fume purifier. Finally, in order to optimize the equipment, we will extend the metal mesh turntable coating of the mechanical centrifugal purifier to extend the cleaning cycle of the mechanical centrifugal purifier, and study the friction coefficient of the mechanical centrifugal purifier after coating on the self⁃purification efficiency and the purification efficiency of the whole system influences.The results show that the use of mechanical centrifugal purifier can prolong the cleaning cycle of electrostatic fume purifier. The use of electrostatic fume purifier can improve the purification efficiency of mechanical centrifugal purifier. The combination of a mechanical centrifugal purifier and an electrostatic fume purifier has the best effect on the purification of the fume.