Effect of low gas velocity on the nanoparticle collection performance of an electrostatic precipitator

ABSTRACT

Gas velocity is a critical operational variable in the electrostatic precipitation process. However, studies concerning the collection of nanoparticles have ignored the effect of low gas velocities. Therefore, the aim of this work was to use a wire-plate electrostatic precipitator to investigate the effects of atypical gas velocities under different electric fields on the efficiency. Increasing of both variables enhanced the efficiency, under the conditions used. Unusual behaviors of the grade efficiency curves were associated with diffusional effects. The experimental overall efficiency data were compared with the Deutsch model, and effective migration velocity curves with maximum points were obtained.

KEYWORDS:

• Electrostatic precipitation
• nanoparticles
• diffusional mechanism
• environmental control
• electrostatic precipitator

Acknowledgments

The authors are grateful for the financial support provided by CNPq and Capes.

Additional information

Funding

This work was supported by grants from CNPq and Capes; Conselho Nacional de Desenvolvimento Científico e Tecnológico. 131744/2017-8; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior.