Capture of Particles from an Iron and Steel Smelter with a Pulse-Energized Electrostatic Precipitator

Grigoriu, C.; Wang, Wei‐Ning; Martín, Diana; Biswas, Pratim

doi:10.4209/aaqr.2012.02.0045

Cited by 7 publications

(4 citation statements)

References 38 publications

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“…Due to the evaporation of heavy metal, some environmental issues may arise. This must be controlled by installing proper dust collecting facilities such as an electrostatic precipitator [ 24 ], etc., if the proposed evaporation refining of tramp elements are feasible.…”

Section: Introductionmentioning

confidence: 99%

Evaporation of As and Sn from Liquid Iron: Experiments and a Kinetic Model during Top-Blown Oxygen Steelmaking Process

Kim

Park

et al. 2022

Materials

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Evaporation kinetics of tramp elements (M = As and Sn) in liquid iron were investigated by high-temperature gas–liquid reaction experiments and a phenomenological kinetic model. Residual content of As or Sn in the liquid iron ([pct M]) during the evaporation was measured in the temperature range of 1680 °C to 1760 °C. [pct As] and [pct Sn] decreased faster as the reaction temperature and [pct C]0 increased. Assuming first-order reaction kinetics, the apparent rate constants (kM) were obtained at each reaction temperature and [pct C]0. [pct M] in a liquid iron during the top-blown oxygen steelmaking process was simulated, with an emphasis on enlarging the reaction surface area by forming a large number of liquid iron droplets. The surface area and the droplet generation rate were obtained based on the oxygen-blowing condition. The whole surface area increased up to ∼163 times the initial liquid iron (bath) surface area, due to the generation of the droplets. Using the kM obtained in the present study, the evaporation of M during the top-blown oxygen steelmaking process for 200 tonnes of liquid iron was simulated. For a condition of [pct M]0 = 0.005 (M = As and Sn), As and Sn could be removed from the liquid iron, which was seen to be much improved by the consideration of the droplet generation. However, additional actions are required to improve the evaporation rate, as the evaporation rate in the BOF process was not fast enough to be practically considered.

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Section: Introductionmentioning

confidence: 99%

Evaporation of As and Sn from Liquid Iron: Experiments and a Kinetic Model during Top-Blown Oxygen Steelmaking Process

Kim

Park

et al. 2022

Materials

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“…Usually, laser radiation acts as the main physical impact, additional impacts greatly contribute to an increase in the processing efficiency. In [19] and [4], the influence of a high-voltage pulsed electrostatic precipitator on the efficiency of deposition of nanoparticles from the gas flow of a metallurgical enterprise is considered. In [9], the efficiency of electrostatic deposition of micro-and nanoparticles in a wide range of sizes was estimated.…”

Section: Introductionmentioning

confidence: 99%

Deflection of particles of a laser erosion plume under the action of a high-voltage electrostatic field during ablation processing of titanium

Firsov

Zolotov

Efremov

et al. 2022

J. Phys.: Conf. Ser.

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The ablative particles of the laser erosion torch during the processing of titanium with subpicosecond pulses were analyzed for vertical deflection under the action of an electrostatic field. The installation of a solid-state ytterbium laser with a radiation wavelength of 1030 nm was used. The photographs of the registered deviations of ablation particles in the region of propagation of the electrostatic field were obtained. The dependence of the vertical deflections of ablated particles on the laser pulse energy and the distance from the electrodes to the target is calculated.

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“…These exhaust gases are contained mostly of nanoparticle (d p < 100 nm). Many industrial hygienic and epidemiological studies have stated that nanoparticles can cause inflammation to human lungs and cardiovascular diseases, and it can cause severe damage to the environment (Oberdorster et al, 2005;Kreyling et al 2006;Grigoriu et al, 2012).…”

Section: Accepted Manuscript 1 Introductionmentioning

confidence: 99%

The Applications and Distinctions of Three Different Material Collection Plates in Wet Electrostatic Precipitator

Huang

Syu

Cheng

et al. 2022

Aerosol Air Qual. Res.

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Particle back-corona slows the efficiency of the dry-electrostatic precipitator (dry-ESP), especially during the removal of high resistivity particles. In this study, a new type of wetelectrostatic precipitator (wet-ESP) was designed and built using stainless steel (SS), conductive glass (CG), and original glass (OG) for its collection plates. The objectives of this research included the efficiency characteristics of both the dry-ESP and the wet-ESP, how the materials used in the dust collectors affect the ESP performance including SS, CG, and OG, and the effects on the electric resistivity of the particle of its performance, and the ozone generation rates of the wet-ESP. The experiment results indicated that the wet-ESP could improve the dust-cake phenomenon caused by high electrical resistivity particles that often occurred on dry-ESP in order to prolong its efficiency. Furthermore, the results indicated that during the most penetrating particle size (MPPS) penetration of SSESP and CGESP were both below 6% while OGESP was over 40% under the dry condition. When OGESP was placed and operated under the wet condition, its particle penetration dropped to below 20% under the MPPS. The results confirmed that compared to the dry-ESP, wet-ESP performed at a higher and better efficiency. In addition, as ozone concentration acts on the corona current under the same voltage, the result found that the ozone concentration of OGESP was lower than both CGESP and SSESP under the wet setting.

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Capture of Particles from an Iron and Steel Smelter with a Pulse-Energized Electrostatic Precipitator

Cited by 7 publications

References 38 publications

Evaporation of As and Sn from Liquid Iron: Experiments and a Kinetic Model during Top-Blown Oxygen Steelmaking Process

Evaporation of As and Sn from Liquid Iron: Experiments and a Kinetic Model during Top-Blown Oxygen Steelmaking Process

Deflection of particles of a laser erosion plume under the action of a high-voltage electrostatic field during ablation processing of titanium

The Applications and Distinctions of Three Different Material Collection Plates in Wet Electrostatic Precipitator

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