Insights into the role of particle space charge effects in particle precipitation processes in electrostatic precipitator

摘要: Abstract Electrostatic precipitators (ESPs) are considered as cost-effective technology for separating the charged particle from flue gas. In this paper, a modified ESP model was developed to investigate effects of on electric field, ion density, charging and migration regarding various concentrations. Coupled processes corona discharge, flow transport were considered. Results showed that space charge presented trajectory-dependent distributions field density in gas direction. With concentration increasing 0 200 mg/m3, strength electrode surface inhibited 1.32 × 106 1.24 × 106 V/m, while plate raised 7.1 × 105 8.3 × 105 V/m. By contrast, within whole domain decreased when considered, it by more than 40% 50 mg/m3. The rate due consequently overall 45.7% increased 200 mg/m3. correlation between collection efficiency current discussed, two didn't vary synchronously with concentration. A criterion deterioration, under suppression conditions, first proposed instructing design operation.