Theory and application of cyclone with impulse electrostatic excitation for cleaning molecular gas

This paper introduces the structure, characteristics and operating principle of a cyclone impulse electrostatic precipitation (CIESP), and presents the solid–gas separation mechanism of CIESP. The hydromechanics equations of particles in solid–gas separation are set up with the goal of analyzing the characteristics of impulse corona discharge. The application of CIESP for cleaning molecular gas in a catalyst plant is explained. We conclude that CIESP is very suitable for cleaning sticky dust particles from exhaust gases of molecular sieve catalyst plant, and has high overall collection efficiency, while the migration velocity is approximately twice that of the electrostatic precipitation (up to 0.15–0.18 m/s). The theoretical formula for particle migration velocity is experimentally verified.