Collection efficiency of ultrafine particles by an electrostatic precipitator under DC and pulse operating modes

Zukeran, Akinori; Looy, P.C.; Berezin, Alexander A.; Jayaram, S.; Cross, J.D.; Ito, Tairo; Chang, Jen‐Shih

doi:10.1109/28.793383

Cited by 35 publications

(8 citation statements)

References 14 publications

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“…As a result, the collection efficiency of submicron particles is improved. Zukeran, et al [4] experimentally studied the ultrafine particle collection efficiency of ESP under DC and pulsed operating modes. The experimental results showed that the collection efficiency for DC applied voltage decreased with increasing dust loading when particle density was larger than 2.5 ×10 10 particles/m 3 due to inefficient collection of ultrafine particles.…”

Section: Introductionmentioning

confidence: 99%

Use of Pulse-Energized Electrostatic Precipitator to Remove Submicron Particulate Matter in Exhaust Gas

Thonglek

Kiatsiriroat

2014

j.eng.technol.sci.

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An electrostatic precipitator (ESP) with negative pulse corona discharge for removal of submicron particles in the exhaust gas of thermal equipment such as boilers, burners or internal combustion engines is presented. A wire-cylinder ESP was designed and constructed for experimental testing at laboratory scale. The collection efficiency of submicron particles in the exhaust gas of a diesel burner under various dust loadings and gas velocities was investigated. The results were compared with those obtained from the conventional DC ESP technique. It was found that the pulse peak voltage supply could be set much higher than the sparking limit of the DC energized unit. Thus, the electric field density could be increased, which resulted in a higher collection efficiency. The higher pulse frequency also increased the collection efficiency, especially for submicron particles.

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Section: Introductionmentioning

confidence: 99%

Use of Pulse-Energized Electrostatic Precipitator to Remove Submicron Particulate Matter in Exhaust Gas

Thonglek

Kiatsiriroat

2014

j.eng.technol.sci.

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“…6. Comparison with previous measured efficiencies [22] is also shown on the same figure. It is quite clear that the present model predictions deviated from the measured data specifically at high particle concentration.…”

Section: Resultssupporting

confidence: 54%

“…Cristina and Feliziani [19] proposed a procedure for the numerical computation of the electric field and current density distributions in a dc electrostatic precipitator in the presence of dust, taking into account the particlesize distribution. The performance of WDEP s under impulse voltages has been investigated by many researchers [20][21][22][23]. It has been reported that the application of a pulse energization to electrostatic precipitators has substantial benefits when high resistivity particulate materials are involved.…”

Section: Introductionmentioning

confidence: 99%

Numerical computation of collection efficiency in wire duct electrostatic precipitators

Al-Hamouz

Abuzaid²

Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344)

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This paper numerically analyzes the collection efficiency associated with wire-duct electrostatic precipitators (WDEP) used in the control of particulates pollution. The finite element method (FEM) and a modified method of characteristics are used to solve Poisson's equation and to satisfy the current continuity condition, respectively. The two methods are repeated iteratively to obtain a selfconsistent solution of the describing equations. Comparing the computed results with previously obtained experimental and calculated values tests the effectiveness of this approach. The agreement with experimental results is found to be satisfactory. 1390 0-7803-7420-7/02/$17.00 © 2002 IEEE

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“…It can generate higher electric field strength and ion concentration than DC power supply without excessive breakdown, hence, enhance particle charging due to larger electrical mobility of ions, and improve the ultrafine particle collection efficiency. The DC pulsed power supply has been proved to reduce black corona with high resistivity tar and particulate matter [13]. The present study is among the first to tackle this shortcoming, focusing on design, construction, and installation of a simple, compact and cost effective ESP with DC pulsed power supply capable of removing particulate matter from the stack gases of a small municipal incinerator.…”

Section: Introductionmentioning

confidence: 99%

Demonstration of a Modular Electrostatic Precipitator to Control Particulate Emissions from a Small Municipal Waste Incinerator

Intra¹,

Yawootti²,

Tippayawong³

2014

Journal of Electrical Engineering and Technology

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Incineration is conceptually sound as a waste treatment technology. There is, however, concern over its emissions when it is improperly designed and operated. An electrostatic precipitator is one of the most commonly used devices to control particulate emissions from boilers, incinerators and some other industrial processes. In this work, a modular electrostatic precipitator with sizing of 1 m × 1 m×1 m was developed for removal of particulate matter from the exhaust gases of a small waste incinerator. Its design was based on a simple wire-and-plate concept. The corona discharge wires were connected to a positive high-voltage pulse generator, while the collection plates were grounded. The high-voltage pulse generator was used to produce the corona discharge field between the individual discharge wire and the collection plate. The particulate-laden exhaust gas flow was directed across the corona discharge field. The charged particles were deflected outward and collected on the plate. The collection efficiency was evaluated as a mass loading ratio between the difference at the inlet and the outlet to the particulate loading at the inlet of the precipitator. The collection efficiency of this modular electrostatic precipitator design was approximately 80 %.

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Collection efficiency of ultrafine particles by an electrostatic precipitator under DC and pulse operating modes

Cited by 35 publications

References 14 publications

Use of Pulse-Energized Electrostatic Precipitator to Remove Submicron Particulate Matter in Exhaust Gas

Use of Pulse-Energized Electrostatic Precipitator to Remove Submicron Particulate Matter in Exhaust Gas

Numerical computation of collection efficiency in wire duct electrostatic precipitators

Demonstration of a Modular Electrostatic Precipitator to Control Particulate Emissions from a Small Municipal Waste Incinerator

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