Dust Removal of Electrostatic Precipitator equipped with Alternation of Activated Carbon Coated Electrodes and Dielectric Panels in Pilot Plant

The main purpose of this research work was to evaluate dust removal efficiencies using electrode plates coated with activated carbon in dust removal chamber. The experiments were performed with electrode-plates coated with activated carbon with black carbon and poly vinyl acetate (PVA) as binding agent. Methanol was added into the coating mixture for lowering the viscosity and at the same time helped the activated carbon (AC) pores not to be blocked by PVA. After coating the electrode surface, it was tested to collect dust in cylindrical chamber with and without power supply. In both case, AC coated electrode showed higher dust removal efficiencies compared to conventional aluminum electrode. Continuous test for PM10 dust control revealed that removal efficiency gradually increased with time passage, and as increasing the distance from inlet, the removal efficiency becomes stable. However, where the interval between electrodes was as short as 1cm, and also at the back of the chamber, “back discharge” effect was observed, and resolved easily by the elevation of humidity level. Volatile organic compounds (VOCs) were controlled successfully with the AC coating material so that it proved both particular and gaseous contaminants can be treated with this AC-coated electrostatic precipitator.*Corresponding author (Kwang Soo Kim): Daehwa-Dong 283, Goyangdae-Ro, Ilsanseo-Gu, Goyang-Si, Gyeonggi-Do, 411-712, Korea / [email protected] / Tel. + 82 31 9100 299 / Fax. +82 31 910 0291

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Analysis of Filtration Efficiency of Activated Carbon Coated Sand Beds

Journal of Advanced Research in Alternative Energy Environment and Ecology ◽

10.24321/2455.3093.201801 ◽

2018 ◽

Vol 05 (04) ◽

pp. 1-5

Author(s):

Geeta Singh ◽

Keyword(s):

Activated Carbon ◽

Filtration Efficiency ◽

Carbon Coated ◽

Coated Sand ◽

Sand Beds

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Unsteady Modeling of Powdered Activated Carbon Deposition on Collection Electrode of a Lab-Scale Electrostatic Precipitator (ESP)

Volume 1: Symposia, Parts A and B ◽

10.1115/fedsm2012-72409 ◽

2012 ◽

Author(s):

Yasmin Khakpour ◽

Herek L. Clack

Keyword(s):

Activated Carbon ◽

Particle Deposition ◽

Electrostatic Precipitator ◽

Activated Carbons ◽

Collection Efficiency ◽

Continuous Phase ◽

Powdered Activated Carbon ◽

Computational Domain ◽

Discrete Phase Model ◽

Discrete Phase

Particulate sampling in the flue gas at the Electrostatic Precipitator (ESP) outlet during injection of powdered activated carbons (PACs) has provided strong anecdotal evidence indicating that injected PACs can penetrate the ESP in significant concentrations. The low resistivity of PAC is consistent with poor collection efficiency in an ESP and lab-scale testing has revealed significantly different collection behavior of PAC in an ESP as compared to fly ash. The present study illustrates the use of a commercial CFD package — FLUENT — to investigate precipitation of powdered activated carbon (PAC) in the presence and absence of electric field. The computational domain is designed to represent a 2-D wire-plate ESP channel. The governing equations include those covering continuous phase transport, electric potential, air ionization, and particle charging. The particles are tracked using a Lagrangian Discrete Phase Model (DPM). In addition, a custom user-defined function (UDF) uses a deforming boundary condition and a prescribed critical particle velocity to account for particle deposition and dust-cake growth on the electrodes. The effect of Electrohydrodynamics (EHD) induced flow on the ESP collection efficiency under various flow and particle characteristics as well as different ESP configurations are illustrated.

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