Feasibility of Compact Tubular Electrostatic Precipitator Module for Removal of Carbonaceous Particles from Hot Exhaust Gas

Abstract

This paper screens the feasibility of a compact tubular electrostatic precipitator (ESP) module for the removal of carbonaceous particles from hot exhaust gas using appropriate standard procedures with a 50 mm inner‑diameter collector at 610 °C, 1 atm with Q = 0.020 m³/s, and collection performance is predicted with the Deutsch–Anderson model with soot-sized particles between 100–500 nm. Data obtained show that the predicted hydraulic penalty is minimal with Δp_f = 8–10 Pa over 0.4 m. Electrical design strongly controls performance: a smooth 10 mm electrode at 10 kV produces a peak field of 12 kV/cm, which can be below stable corona inception, whereas a 1 mm electrode raises the peak field above 50 kV/cm at the same voltage. Under 10 kV and L = 0.40 m, the model predicts η_mid between 28–37% for a 10 mm electrode and η_mid between 66–79% for a 1 mm electrode across 100–500 nm. Design scaling for dp = 200 nm indicates that achieving ≥90% collection at 10 kV requires L between 0.8–1.0 m under mid‑case high‑field control for the 1 mm electrode, while the 10 mm electrode would require multi‑meter length unless higher voltages are used. The results identify electrode geometry, voltage, and effective collecting area as dominant levers for compact exhaust‑line ESP deployment and motivate targeted high‑temperature electrical and particle‑removal validation.