1. Effects of electrode materials and dimensions of an electrostatic spray scrubber on water droplet charging for dust removal
- Author
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Xiaochuan Li, Reyna Madison Knight, Jeb S. Hocter, Bo Zhang, Lingying Zhao, and Heping Zhu
- Subjects
Static Electricity ,Water ,Dust ,Graphite ,Management, Monitoring, Policy and Law ,Particle Size ,Stainless Steel ,Waste Management and Disposal ,Electrodes ,Copper - Abstract
Droplet charging is an effective method to enhance dust removal efficiency using an electrostatic spray scrubber (ESS). However, effects of the materials and dimensions of different electrodes on droplet charging efficiency have not been studied systematically. In this study, ring-shaped electrodes were selected to test effects of three types of electrode materials (copper, stainless steel, and graphite) with various dimensions on droplet charging efficiency. A Faraday pail charge measurement device was used to measure the droplet charge generated by the electrodes. A reduced factorial design with four factors was used in this study to investigate the charging efficiency affected by the factors. The four factors tested were electrode material, electrode diameter, nozzle height, and applied voltage. A 304L stainless steel electrode was found to achieve higher droplet charge-to-mass ratio (CMR) values than identically shaped electrodes made from either copper or graphite. The optimal stainless steel electrode inner diameter was 100 mm. The 304L stainless-steel electrode with this optimal diameter and a height of 45 mm achieved the highest mean CMR of 0.435 ± 0.002 mC kg
- Published
- 2022