The Experts below are selected from a list of 324 Experts worldwide ranked by ideXlab platform

Jerzy Mizeraczyk - One of the best experts on this subject based on the ideXlab platform.

  • Electrohydrodynamic secondary flow and particle collection efficiency in a one-sided spike-plate type Electrostatic Precipitator
    IEEE Transactions on Dielectrics and Electrical Insulation, 2011
    Co-Authors: Janusz Podlinski, A. Niewulis, V. Shapoval, Jerzy Mizeraczyk
    Abstract:

    In this work, results of electrohydrodynamic secondary flow and particle collection efficiency measurements in an Electrostatic Precipitator under positive and negative voltage polarity are presented. The Electrostatic Precipitator had two plate collecting electrodes and a single spike discharge electrode. The spike tips were only on one side of the discharge electrode, therefore called a one-sided spike electrode. The electrohydrodynamic secondary flow pattern and collection efficiency measurements were carried out for two one-sided spike electrode positions: with the spike tips directed either upstream or downstream the primary flow. The results of the flow pattern measurement showed different flow patterns for different spike tips positions in respect to the primary flow direction. The Electrostatic Precipitator collection efficiency measurements clearly showed difference in the particle collection for both spike tips positions. Since the other Electrostatic Precipitator working parameters were the same, it can be concluded that the observed change of the electrohydrodynamic secondary flow was the main reason of the difference in the Electrostatic Precipitator collection efficiency.

  • Electrohydrodynamic gas flow regime map in a wire-plate Electrostatic Precipitator
    Fourtieth IAS Annual Meeting. Conference Record of the 2005 Industry Applications Conference 2005., 2005
    Co-Authors: J.s. Chang, J. Dekowski, Janusz Podlinski, D. Brocilo, K. Urashima, Jerzy Mizeraczyk
    Abstract:

    In this paper, the particle image velocimetry measurements of the flow velocity fields in a wire-plate type Electrostatic Precipitator (ESP) with a single negatively polarized wire were analyzed for wide range of Reynolds and electrohydrodynamic numbers, and their influence on the dust particle collection efficiency was investigated. The results show that the dust particle collection was influenced by electrohydrodynamic (EHD) secondary flow when Ehd/Re/sup 2//spl ges/1 and ReSc/spl ges/F/sub E/, where Sc is the Schmidt number and F/sub E/ is the electric field number.

  • Removal of NOx by DC and pulsed corona discharges in a wet Electrostatic Precipitator model
    Journal of Electrostatics, 1998
    Co-Authors: Mirosław Dors, Jerzy Mizeraczyk, Th. Czech
    Abstract:

    Abstract The object of this investigation was the removal of NO and NO2 from simulated exhaust gases (N2 : O2 : CO2 : NO2; N2 : O2 : NO) by DC and pulsed corona discharges in reactors simulating a segment of an Electrostatic Precipitator whose collecting electrodes are irrigated by water. For this purpose two reactors were employed: one had a usual wire-to-plate geometry, the second a multineedle-to-plate geometry. The plates in both reactors were covered by a water film. The results show that an efficient removal of NO and NO2 from exhaust gas by DC or pulsed corona discharges can be obtained by irrigating the collecting plates of an Electrostatic Precipitator with water. It suggest that an efficient DeNOx can also be obtained by a suitable electrode arrangement and a suitable energization in wet Precipitators.

Adam Charchalis - One of the best experts on this subject based on the ideXlab platform.

  • Two-stage vs. two-field Electrostatic Precipitator
    Journal of Electrostatics, 2017
    Co-Authors: A. Jaworek, A Ottawa, A Marchewicz, A T Sobczyk, Thomas Czech, Andrzej Krupa, Ł. Śliwiński, Adam Charchalis
    Abstract:

    Abstract The paper presents comparison of the collection efficiency of semi-industrial, two-field Electrostatic Precipitator and two-stage Electrostatic Precipitator comprising an Electrostatic agglomerator. The two-stage Electrostatic Precipitator was converted from two-field Electrostatic Precipitator, in which the first field was replaced by unipolar Electrostatic agglomerator. The investigated Electrostatic Precipitator was of parallel-plate type, with spiked-wire discharge electrode between sigma type collection electrodes. In the unipolar agglomerator used in this system, the particles were charged by ion current and forced to oscillate by alternating electric field. The oscillatory motion of particles perpendicular to the gas flow causes the collision between particles and deposition of small particles onto the larger ones. The agglomerated particles were next collected by one-field Electrostatic Precipitator. The collection efficiency of two-stage Electrostatic Precipitator for PM2.5 and PM1 particles was 99.1% and 98.8%, compared to 99% and 98.1% of two-field Electrostatic Precipitator, respectively. The most important result of this research is that the replacement of the first field of Electrostatic Precipitator by an Electrostatic agglomerator does not change the overall collection efficiency of the system but the power consumption of Electrostatic agglomerator can be 10–50 times lower than by the replaced field of Electrostatic Precipitator.

  • enhancement of collection efficiency for fly ash particles pm2 5 by unipolar agglomerator in two stage Electrostatic Precipitator
    Separation and Purification Technology, 2017
    Co-Authors: A T Sobczyk, ł śliwinski, A Ottawa, A Marchewicz, Thomas Czech, A. Jaworek, Adam Krupa, Dan Kluk, Adam Charchalis
    Abstract:

    Abstract Semi industrial-scale, two-stage Electrostatic precipitation system comprised of unipolar Electrostatic agglomerator and Electrostatic Precipitator was investigated in this paper. In this type of agglomerator, the process of particle charging and their agglomeration is accomplished in the same device. The particles are charged by ion current in alternating electric field, and agglomerated due to their oscillatory motion in this field, perpendicular to the gas flow. The charged and agglomerated particles are collected in the next stage, which is a conventional Electrostatic Precipitator with spiked wire discharge electrodes and collection electrodes of the sigma type. Collection efficiency of this system was measured for different gas temperatures, different fly ash concentrations and for various magnitudes of AC voltage applied to the agglomerator. Two-stage Electrostatic Precipitator allows obtaining higher fractional collection efficiency for PM1 and PM2.5 particles than a one-stage Electrostatic Precipitator. In this type of two-stage Electrostatic Precipitator with an agglomerator, the number collection efficiency for fly ash particles in PM10, PM2.5 and PM1 size ranges was about 96%, 96% and 94%, respectively, and mass collection efficiency in same size ranges was 98%, 97% and 95%, respectively.

Klaus Woletz - One of the best experts on this subject based on the ideXlab platform.

  • novel wet Electrostatic Precipitator for collection of fine aerosol
    Journal of Electrostatics, 2009
    Co-Authors: Andrei Bologa, H R Paur, Helmut Seifert, T Wascher, Klaus Woletz
    Abstract:

    Abstract A novel wet Electrostatic Precipitator (WESP) is designed for effective control of fine aerosol from humid gases. It operates on the principle of unipolar particle charging in the corona discharge and particle precipitation under the field of their own space charge. The new Precipitator is characterized by high gas velocity in the ionizing stage. Tests were carried out for gas with (NH 4 ) 2 SO 4 , HCl and (NH 4 )Cl aerosol at particle number concentration up to 5·10 7 #/cm 3 and mass concentration 10–1000 mg/Nm 3 . For test conditions one-field WESP ensures mass collection efficiency 90–97% and two-field Electrostatic Precipitator up to 99%.

  • Collection of Fine Particles by Novel Wet Electrostatic Precipitator
    IEEE Transactions on Industry Applications, 2009
    Co-Authors: Andrei Bologa, H R Paur, Helmut Seifert, T Wascher, Markus Lehner, Klaus Woletz
    Abstract:

    A novel wet Electrostatic Precipitator is designed for control of fine aerosol from humid effluent gases. It operates on the principle of unipolar particle charging in a dc corona discharge in a high-velocity (> 20 m/s) ionizing stage and aerosol precipitation in the low-velocity (< 3 m/s) collection stage under the field of the particle's own space charge. The high gas velocity in the ionizing section diminishes the corona suppression at high particle number concentrations of H2SO4 and HCl aerosol.

  • Application of space-charge Electrostatic Precipitator for collection of oil mist from pyrolysis gases
    2008 IEEE International Conference on Dielectric Liquids, 2008
    Co-Authors: Andrei Bologa, Helmut Seifert, Klaus Woletz, A. Hornung, H R Paur
    Abstract:

    A novel Electrostatic Precipitator CAROLAreg is developed for collection of fine oil mists. It operates on the principle of unipolar particle charging in the corona discharge and particle precipitation under the field of space charge. The pilot Precipitator was tested at different gas temperatures. It is shown that the increase of gas temperature changes the characteristics of the corona discharge and particle size distribution, especially for droplets sub-micron droplets. The CAROLAreg Precipitator was used for collection of oil mist from pyrolysis gases at the HALOCLEANreg plant. The flow rate of biomass in the HALOCLEANreg plant was 15-30 kg/h. The particle mass concentration in the raw gas was over 100 g/Nm3. The operation voltage of the Precipitator was 10-12 kV and corona current up to 0,1 mA. Single stage Electrostatic Precipitator ensured mass collection efficiency 97-99,5% for pyrolysis oil mist.

Zi-sheng Zhang - One of the best experts on this subject based on the ideXlab platform.

  • Fieldbus control system and Electrostatic Precipitator
    Recent Developments in Applied Electrostatics, 2020
    Co-Authors: Qing Li, Zi-sheng Zhang
    Abstract:

    Publisher Summary This chapter presents the analysis of the structure of fieldbus control system (FCS) and Electrostatic Precipitator. It also explains the development of FCS auto-control system and discusses the design and realization of the FCS Electrostatic dust-collection system. Fieldbus technology is a new rising subject, which is developed with intelligence sensor, computer, network technology, and especially with the technology of the large scale integrated circuit in recent years. Electrostatic Precipitator is widely applied because of its high-efficiency to purification and energy-conservation and because it is easy to operate, especially in the trades, such as electric power industry, metallurgy, steel, chemical industry, and building materials.

  • the control system of high voltage Electrostatic Precipitator based on fpga
    Advanced Materials Research, 2013
    Co-Authors: Zi-sheng Zhang, Peng Bo Ge
    Abstract:

    It is urgent to study a new control system for improving the efficiency of Electrostatic Precipitator. The System-on-a-Programmable-Chip (SOPC) development board, which belongs to the series of Cyclone of Altera Company, is used as the development platform. Analog Digital (AD) conversion module, voltage control module and overall control module of the Electrostatic Precipitator are designed and the simulation waveform of the system is analyzed, based on the programmable logic device EP1C12Q240C6 and Very-High-Speed Integrated Circuit Hardware Description Language (VHDL) programming language. The results show that: by using Field Programmable Gate Array (FPGA) as the control, transformation of AD is accurate and fast and high voltage power supply is stable, which leads to a certain value for generalization.

  • Control system model of high voltage Electrostatic Precipitator based on foundation fieldbus
    2008 International Conference on Machine Learning and Cybernetics, 2008
    Co-Authors: Zi-sheng Zhang, Qing Li
    Abstract:

    Foundation fieldbus (FF) is applied to the control system of high voltage Electrostatic Precipitator coal ash. FF technology is composed of intelligent sensor, computer and network technology. The theory of Electrostatic Precipitator and FF is explained. FF is compared with distributed control system(DCS). The whole model of the control system is probed. The design and the realization of the model are mainly discusses. The model is made up of four parts: host computer, interface card, fieldbus and field device. This technology can be well applied.

  • Control System of High Voltage Electrostatic Precipitator Based on Fieldbus for Coalash
    2006 International Conference on Machine Learning and Cybernetics, 2006
    Co-Authors: Zi-sheng Zhang, Qing Li, Qiang Zhao
    Abstract:

    Fieldbus technology is a whole, which is composed of intelligent sensor, computer and network technology. The way of the fieldbus technology is applied to high-voltage Electrostatic Precipitator system of coal is given. The process of fieldbus standardization is introduced. The theory of the Electrostatic Precipitator and fieldbus technology is explained. The setting-up of the model, the design and the realization of the fieldbus control system are discussed. The key points of the realization of the system are designated. This technology can be well applied in practicality

A T Sobczyk - One of the best experts on this subject based on the ideXlab platform.

  • Two-stage vs. two-field Electrostatic Precipitator
    Journal of Electrostatics, 2017
    Co-Authors: A. Jaworek, A Ottawa, A Marchewicz, A T Sobczyk, Thomas Czech, Andrzej Krupa, Ł. Śliwiński, Adam Charchalis
    Abstract:

    Abstract The paper presents comparison of the collection efficiency of semi-industrial, two-field Electrostatic Precipitator and two-stage Electrostatic Precipitator comprising an Electrostatic agglomerator. The two-stage Electrostatic Precipitator was converted from two-field Electrostatic Precipitator, in which the first field was replaced by unipolar Electrostatic agglomerator. The investigated Electrostatic Precipitator was of parallel-plate type, with spiked-wire discharge electrode between sigma type collection electrodes. In the unipolar agglomerator used in this system, the particles were charged by ion current and forced to oscillate by alternating electric field. The oscillatory motion of particles perpendicular to the gas flow causes the collision between particles and deposition of small particles onto the larger ones. The agglomerated particles were next collected by one-field Electrostatic Precipitator. The collection efficiency of two-stage Electrostatic Precipitator for PM2.5 and PM1 particles was 99.1% and 98.8%, compared to 99% and 98.1% of two-field Electrostatic Precipitator, respectively. The most important result of this research is that the replacement of the first field of Electrostatic Precipitator by an Electrostatic agglomerator does not change the overall collection efficiency of the system but the power consumption of Electrostatic agglomerator can be 10–50 times lower than by the replaced field of Electrostatic Precipitator.

  • enhancement of collection efficiency for fly ash particles pm2 5 by unipolar agglomerator in two stage Electrostatic Precipitator
    Separation and Purification Technology, 2017
    Co-Authors: A T Sobczyk, ł śliwinski, A Ottawa, A Marchewicz, Thomas Czech, A. Jaworek, Adam Krupa, Dan Kluk, Adam Charchalis
    Abstract:

    Abstract Semi industrial-scale, two-stage Electrostatic precipitation system comprised of unipolar Electrostatic agglomerator and Electrostatic Precipitator was investigated in this paper. In this type of agglomerator, the process of particle charging and their agglomeration is accomplished in the same device. The particles are charged by ion current in alternating electric field, and agglomerated due to their oscillatory motion in this field, perpendicular to the gas flow. The charged and agglomerated particles are collected in the next stage, which is a conventional Electrostatic Precipitator with spiked wire discharge electrodes and collection electrodes of the sigma type. Collection efficiency of this system was measured for different gas temperatures, different fly ash concentrations and for various magnitudes of AC voltage applied to the agglomerator. Two-stage Electrostatic Precipitator allows obtaining higher fractional collection efficiency for PM1 and PM2.5 particles than a one-stage Electrostatic Precipitator. In this type of two-stage Electrostatic Precipitator with an agglomerator, the number collection efficiency for fly ash particles in PM10, PM2.5 and PM1 size ranges was about 96%, 96% and 94%, respectively, and mass collection efficiency in same size ranges was 98%, 97% and 95%, respectively.