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Technical Papers

Experimental study on the removal of PM2.5 using modified carbon steel collectors with hydrophilic properties in wet ESPs

ORCID Icon, , , &
Pages 1361-1374 | Received 27 Jan 2021, Accepted 30 May 2021, Published online: 14 Jul 2021

Figures & data

Figure 1. Schematic diagram of the experimental apparatus: 1, wet ESPs shell; 2, insulation; 3, DC power; 4, rotameter; 5, water distribution pipe; 6, collecting electrodes; 7, discharge electrodes; 8, water tank; 9, circulating water; 10, circulating pump; 11, aerosol generator; 12, particles feed port; 13, heater; 14, induced draft; 15, regulating valve; 16, export sampling port; 17, inlet sampling port

Figure 1. Schematic diagram of the experimental apparatus: 1, wet ESPs shell; 2, insulation; 3, DC power; 4, rotameter; 5, water distribution pipe; 6, collecting electrodes; 7, discharge electrodes; 8, water tank; 9, circulating water; 10, circulating pump; 11, aerosol generator; 12, particles feed port; 13, heater; 14, induced draft; 15, regulating valve; 16, export sampling port; 17, inlet sampling port

Figure 2. The structure and appearance of electrodes: (a) the discharge electrodes; (b) the collecting electrodes

Figure 2. The structure and appearance of electrodes: (a) the discharge electrodes; (b) the collecting electrodes

Figure 3. Characteristics of particles used in the experiments: (a) Number distribution of particles. (b) Particles morphology. (c) Particles Composition

Figure 3. Characteristics of particles used in the experiments: (a) Number distribution of particles. (b) Particles morphology. (c) Particles Composition

Figure 4. Performance comparison between the MCE and the CRC. (a) V–I characteristics, (b) The total dust removal efficiency. (Cin: 70 mg/m3; t: 4 s; T: 20 °C; F:20 L/h)

Figure 4. Performance comparison between the MCE and the CRC. (a) V–I characteristics, (b) The total dust removal efficiency. (Cin: 70 mg/m3; t: 4 s; T: 20 °C; F:20 L/h)

Figure 5. Influence of the water film on the classification removal efficiency of particles. (a) Particles distribution using the MCE with dry and wet surfaces, (b) The classification dust removal efficiency comparison of particles using the MCE and CRC. (Cin: 70 mg/m3; t: 4 s; T: 20 °C; V: 40kV; F:20 L/h)

Figure 5. Influence of the water film on the classification removal efficiency of particles. (a) Particles distribution using the MCE with dry and wet surfaces, (b) The classification dust removal efficiency comparison of particles using the MCE and CRC. (Cin: 70 mg/m3; t: 4 s; T: 20 °C; V: 40kV; F:20 L/h)

Figure 6. Effects of flue temperature on the dust removal efficiency. (Cin: 65 mg/m3; t: 4 s; T: 20, 60°C; V: 40kV; F:20 L/h)

Figure 6. Effects of flue temperature on the dust removal efficiency. (Cin: 65 mg/m3; t: 4 s; T: 20, 60°C; V: 40kV; F:20 L/h)

Figure 7. Effects of gas residence time on the classification removal efficiency. (Cin: 70 mg/m3, t: 2,4s; T: 20°C; V: 40 kV; F: 20 L/h)

Figure 7. Effects of gas residence time on the classification removal efficiency. (Cin: 70 mg/m3, t: 2,4s; T: 20°C; V: 40 kV; F: 20 L/h)

Figure 8. Effects of applied voltage on the classification removal efficiency of particles. (Cin: 70 mg/m3; t: 4 s; T: 20°C; V: 30,40,44,60 kV; F:20 L/h)

Figure 8. Effects of applied voltage on the classification removal efficiency of particles. (Cin: 70 mg/m3; t: 4 s; T: 20°C; V: 30,40,44,60 kV; F:20 L/h)

Figure 9. Effects of applied voltage on the relative removal efficiency. (Cin: 70 mg/m3; t: 4 s; T: 20°C; V: 30,40,44,50 kV; F: 20 L/h)

Figure 9. Effects of applied voltage on the relative removal efficiency. (Cin: 70 mg/m3; t: 4 s; T: 20°C; V: 30,40,44,50 kV; F: 20 L/h)

Figure 10. Effects of particle inlet mass concentration on the removal efficiency. (Cin:37 ~ 167 mg/m3; t: 4 s; T: 20°C; V: 30 ~ 44, 60 kV; F: 20 L/h)

Figure 10. Effects of particle inlet mass concentration on the removal efficiency. (Cin:37 ~ 167 mg/m3; t: 4 s; T: 20°C; V: 30 ~ 44, 60 kV; F: 20 L/h)

Figure 11. Effects of flushing water flowrate on the removal efficiency. (Cin: 70 mg/m3; t: 4 s; T: 20°C; V: 40 kV; F: 20 ~ 60 L/h)

Figure 11. Effects of flushing water flowrate on the removal efficiency. (Cin: 70 mg/m3; t: 4 s; T: 20°C; V: 40 kV; F: 20 ~ 60 L/h)

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