Novel hybrid composite discharge electrode for electrostatic precipitator

Ali, Muhammad; Alam, Khairul; Al-Majali, Y.; Kennedy, Michael P.

doi:10.1080/10962247.2017.1334718

Cited by 8 publications

(3 citation statements)

References 59 publications

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“…13,20 Numerous studies on the discharge characteristics of wire-plate ESPs have been reported; these studies include investigations of emitter geometry and material on the electrode corona discharge to optimize the discharge electrode through experimental and numerical methods. [21][22][23][24][25] Electrodes with different shapes, diameters, and intervals were tested in an experimental-scale ESP at high temperatures, 26,27 and migration velocity was also investigated. 28,29 Corona discharge and particle collection characteristics in a wet ESP with a ne water mist were discussed.…”

Section: Introductionmentioning

confidence: 99%

Current density distribution and optimization of the collection electrodes of a honeycomb wet electrostatic precipitator

et al. 2018

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Section: Introductionmentioning

confidence: 99%

Current density distribution and optimization of the collection electrodes of a honeycomb wet electrostatic precipitator

et al. 2018

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“…Although composite discharge electrodes in the previous studies had shown tremendous potential, the structural stiffness of the composite discharge electrodes, especially at large/commercial scale, presented challenges under the gas flow as even a small amount of discharge electrode vibration could potentially cause excessive sparking. To address these issues, a novel hybrid composite electrode (HCE) was developed earlier, with patent pending (Alam and Ali 2018), that combined the complementary properties of a metal and carbon fiber (Ali et al 2017). The HCE provided excellent stiffness and abrasion and corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

Integration of novel hybrid composite discharge electrode with semi-pilot novel cross-flow electrostatic precipitator

Ali

Al-Majali

Kennedy

et al. 2018

Journal of the Air & Waste Management Association

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Wet electrostatic precipitators (WESPs) are modern-era pollution control systems specifically designed to capture ultrafine particles as well as acid mist, highly resistive and sticky particles; however, this requires the use of expensive corrosion-resistant metal alloys. The work presented here is part of a continuing study at Ohio University aimed at reducing the cost of WESPs by using a novel combination of a polymer collector surfaces with a hybrid composite discharge electrode. In this study, a hybrid composite discharge electrode was tested, for the first time, inside a semi-pilot-scale experimental setup, with collection surfaces consists of a vertical array of strands. Particle laden gases were passed through this array of polymer ropes, which were kept wet by a small flow of water. The discharge electrodes were composite laminates of carbon fibers in a polymer matrix enclosing a metal mesh. The preliminary results showed that this new integrated system of composite discharge electrode and polymer collector surfaces can match or exceed the performance of a conventional metal alloy electrostatic precipitator (ESP) with metal discharge electrodes. There are additional advantages due to the system being compact, lightweight, and highly corrosion resistant. Implications: This study focused on integrating and assessing performance of a novel hybrid composite electrode (HCE) inside semi-pilot novel cross-flow electrostatic precipitator at conditions typically observed in coal-fired power plant exhausts. The results were collected for particulate collection efficiencies and were compared with a rigid metal electrode. The HCE outperformed metal electrode by showing higher particulate collection efficiency. This result showcases substantial potential for these two new technologies (HCE and cross-flow system) as a substitute for conventional metal based wet ESPs.

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“…e relevant study on an electrostatic precipitator is mainly focused on the dusting principle or filtration characteristics [9,10], the collection efficiency or dusting method [11][12][13], the collected dust or the particulate matter [14,15], the analysis of the operating [16,17], and the electrode system or recovery system [18][19][20] but ignored the study of its bearing structure [21,22]. e main frame structure is often designed and transformed by companies with analogy method and empirical design instead of precise and scientific calculation.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis and Lightweight Optimization Design on Main Frame Structure of Large Electrostatic Precipitator

Wang

Zhao-jian

2018

Advances in Materials Science and Engineering

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e geometric modeling and finite element modeling of the whole structure of an electrostatic precipitator and its main components consisting of top beam, column, bottom beam, and bracket were finished. e strength calculation was completed. As a result, the design of the whole structure of the electrostatic precipitator and the main components were reasonable, the structure was in a balance state, its working condition was safe and reliable, its stress variation was even, and the stress distribution was regular. e maximum von Mises stress of the whole structure is 20.14 MPa. e safety factor was large, resulting in a waste of material. An optimization mathematical model is established. Using the ANSYS first-order method, the dimension parameters of the main frame structure of the electrostatic precipitator were optimized. After optimization, more reasonable structural design parameters were obtained. e model weight is 72,344.11 kg, the optimal weight is 49,239.35 kg, and the revised weight is 53,645.68 kg. Compared with the model weight, the optimal weight decreased by 23,104.76 kg and the objective function decreased by 31.94%, while the revised weight decreased by 18,698.43 kg and the objective function decreased by 25.84%.

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Novel hybrid composite discharge electrode for electrostatic precipitator

Cited by 8 publications

References 59 publications

Current density distribution and optimization of the collection electrodes of a honeycomb wet electrostatic precipitator

Current density distribution and optimization of the collection electrodes of a honeycomb wet electrostatic precipitator

Integration of novel hybrid composite discharge electrode with semi-pilot novel cross-flow electrostatic precipitator

Finite Element Analysis and Lightweight Optimization Design on Main Frame Structure of Large Electrostatic Precipitator

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