Electrostatic Precipitation Technology: A Different Viewpoint

Potter, E. C.

doi:10.1080/00022470.1978.10470564

Cited by 10 publications

(5 citation statements)

References 17 publications

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“…Yet, the difference is to use the continuous approach without the need for threshold values in voltage and current. Other researchers are usually focusing on improving the precipitation efficiency such as Fraunhofer UMSICHT [19] or focus on the theoretical calculation of the ESP performance as E. C. Potter [20]. The approach will be explained further in the next section.…”

Section: Introductionmentioning

confidence: 99%

Development of an online monitoring method for electrostatic precipitators on commercial biomass combustion plants

Alt

Klüh

Gaderer

2019

Biomass Conv. Bioref.

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Combustion plants based on wooden biomass as fuel can contribute to a decarbonization of the energy sector by reducing the need for fossil energy usage, which decreases the net carbon dioxide output in the atmosphere. However, the flue gas of biomassbased combustion plants contains increased amounts of particulate matter, which need to be separated before release into the environment because of legal emission limits. In medium-sized plants, electrostatic precipitators (ESP) are commonly used separators to minimize the particulate matter concentration. Due to new regulations based on the medium combustion plants directive introduced by the EU, continuous surveillance of secondary precipitation technologies like ESP has to be implemented. The method proposed in this paper focuses on the readily available current (I) and voltage (U) data of the high-voltage unit supply of an ESP to calculate the efficiency of the particle separation. Consequently, a continuous proof of function can be delivered without high cost for additional measurement equipment. This article proves the effectiveness of the method in calculating the precipitation effectiveness of the ESP. It is shown that the deviation from the separation efficiency calculated by the method and the measured efficiency is smaller than 7%. Additionally, it is necessary to define a suitable reference signal that indicates whether the combustion plant is running or not. Hence, the availability of the system can be evaluated. This method will help operators to meet legal requirements.

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Section: Introductionmentioning

confidence: 99%

Development of an online monitoring method for electrostatic precipitators on commercial biomass combustion plants

Alt

Klüh

Gaderer

2019

Biomass Conv. Bioref.

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“…The important effects of voltage, particle size, and carrier gas additives clearly emerge from the extended Deutsch equation and the proper value of pilot plant testing has been realized (Potter, 1978 SCA=the specific collection area in s/m 7]s=the particle collection efficiency at corona onset in %.…”

Section: Extended Deutsch Equationmentioning

confidence: 99%

“…The experimental results are, then, fitted with both the modified Deutsch equation made by Matts-Ohnfeldt (1963), and the extended Deutsch equation made by E. C. Potter (1978) to evaluate the effect of the particle characteristics and the operational conditions on the particle collection efficiency of the electrostatic precipitator.…”

Section: Introductionmentioning

confidence: 99%

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Electrostatic precipitability of the coal fly-ash by the pilot scale test

Kim

Ahn

Jang

2001

KSME International Journal

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The equation of the particle collection efficiency proposed by Deutsch has been modified through the various experiments to correct the errors caused by the assumptions made for the equation. In order to get an modified Deutsch equation that can be applied to real conditions, a pilot scale electrostatic precipitator is used. The effects of operational variables on the particle collection efficiency are evaluated. Particle resistivity, gas temperature, moisture contents in gas, gas velocity and particle concentration are used as the operational variables. Two different types of coal fly-ash obtained from the fluidized bed combustor and the pulverized coal combustor are used as test particulate to evaluate the effect of the physiochemical and electrical characteristics of the particle on the particle collection efficiency. The experimental results are fitted with the modified Deutsch equation made by Matts-Ohnfeldt and the extended Deutsch equation made by E. C. Potter to evaluate the effect of the particle characteristics and the operational conditions on the particle collection efficiency of the electrostatic precipitator.

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“…At the same operating conditions, the smaller the geometric standard deviation ofan applied particle size distribution, the higher the collection efficiency; the larger the mass median diameter, the higher the collection efficiency [13]. Practically [17,18,19,20,21] models have been proposed. For a given migration velocity and SCA, the nonideal factors which reduce the collection efficiency of a precipitator are gas velocity distribution, gas sneakage, and rapping reentrainment [12].,…”

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confidence: 99%

The performance of high‐efficiency electrostatic precipitators

Han

Ziegler

1984

Environ. Prog.

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Correlations relate fly-ash resistivity to coal composition and cold-side collection efficiency to operating variables for low-sulfur coal applications. Hso-Pan Han and Edward N. Ziegler, Polytechnic Institute of New York, Brooklyn, N.Y. 11201 0.00027 would indicate good corre r" ation between these efficiencies between 99.5% and 99.8%. A P so, the data base CONCLUSIONS High resistivity of a fly ash diminishes the effectiveness of electrostatic precipitators by limiting the energization level at which the unit can operate. Resistivity is determined by specific minerals present in coal and the reac-Environmental Progress (Vol. 3, No. 3)

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Electrostatic Precipitation Technology: A Different Viewpoint

Cited by 10 publications

References 17 publications

Development of an online monitoring method for electrostatic precipitators on commercial biomass combustion plants

Development of an online monitoring method for electrostatic precipitators on commercial biomass combustion plants

Electrostatic precipitability of the coal fly-ash by the pilot scale test

The performance of high‐efficiency electrostatic precipitators

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