Two-stage electrostatic precipitator with dual-corona particle precharger for PM2.5 particles removal

Jaworek, A.; Marchewicz, Artur; Sobczyk, Arkadiusz; Krupa, A.; Czech, T.

doi:10.1016/j.jclepro.2017.07.032

Cited by 49 publications

(15 citation statements)

References 73 publications

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“…Corona discharge, which is a relatively low-energy discharge process, occurs only in a strong electric field near a electrode with small radius of curvature [1] is a common discharge phenomenon in plasma generator [2], ozone generator [3], electrostatic precipitator [4], electrostatic printing, electrostatic charge of aerosol particles [5], high voltage transmission lines [6], and charged aircraft [7]. Corona discharge usually performs simultaneously in a multi-needle (multi-point) format [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Pulse Current of Multi-Needle Negative Corona Discharge and Its Electromagnetic Radiation Characteristics

et al. 2018

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Negative corona discharge occurs widely in high voltage transmission lines and other “high voltage” uses, which can cause strong electromagnetic interference (EMI). In this research, the pulse current of multi-needle negative corona discharge and its electromagnetic (EM) radiation characteristics were studied and compared with that of single-needle negative corona discharge. A dipole radiation model was established to analyze the EM radiation characteristics of the negative corona discharge. The results show that the Trichel pulse discharge process of one discharge needle in multi-needle discharge structure will inhibit the discharge of the other discharge needles. It is only when the voltage reaches a certain threshold will the current and EM radiation fields of multi-needle discharge structure with a significant increasing of amolitude. The frequency of EM radiation of negative corona discharge is not affected by the number of needles, but is only related to ambient air pressure. This research provides a basis for detecting corona discharge sources in different conditions.

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Section: Introductionmentioning

confidence: 99%

Pulse Current of Multi-Needle Negative Corona Discharge and Its Electromagnetic Radiation Characteristics

et al. 2018

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“…With respect to physical principle, two main types of electrostatic agglomerators can be distinguished: 1) Bipolar agglomerator, in which the particles conveyed by two equal gas streams are charged oppositely, flowing through two parallel prechargers. Agglomeration occurs during mixing of these two streams with the assistance of DC or AC electric fields [20]. In another version, flowing particles can be charged in AC corona discharge, forming oppositely charged particles clouds, which are agglomerated due to Coulomb attraction [21].…”

Section: Electrostatic Agglomerationmentioning

confidence: 99%

Particulate Matter Emission Reduction from Marine Diesel Engines by Electrohydrodynamic Methods

et al. 2019

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Particulate matter (PM) and gaseous compounds (SO2, NOx, VOC) emitted by diesel engines causes serious global environmental problems and health impact. Despite numerous evidences about the harmfulness of diesel particles, the PM emission by diesel engines used by ships, cars, agricultural machines, or power generators is still unregulated, and the efficient removal of PM from diesel exhausts is still the major technological challenge. In order to comply with the International Maritime Organization regulation, the NOx emission is reduced by using selected catalytic reactor, and sulphur oxide emission has been reduced by using fuels of low sulphur content. However, both of those measures cannot be used for the reduction of PM emission produced during combustion of marine fuels. The lack of appropriate regulations results from insufficiently developed technology, which could remove those particles from exhaust gases. Conventional scrubbers currently available on the market remove only sulphur oxide with required collection efficiency, but the collection efficiency for PM2.5 is below 50%. The article discusses the technical means used for the removal of PM from marine diesel engines via applying electrohydrodynamic methods, in particular electrostatic agglomeration, as a method of nanoparticles coagulation to larger agglomerates, which could operate in two-stage electrostatic precipitation systems, and electrostatic scrubbers, which remove particles by electrically charged water droplets. The experimental results were obtained for a 2-stroke 73 kW diesel engine fuelled with marine gas oil (MGO). The agglomerator allowed increasing the collection efficiency from diesel exhausts for PM2.5 particles by about 12%, compared to electrostatic precipitator operating without agglomerator, and the total mass collection efficiency was above 74%. The collection efficiency of electrostatic scrubber was higher than 95wt.%. The advantage of using the electrostatic scrubber is that it can also reduce the SO2 emission by more than 90%, when HFO is used.

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“…There were proposed four stages of the implementation of these innovative technologies: Low-power electrostatic precipitator and its schematic diagram (for use in domestic boilers with thermal power capacities ranging from 20 kW to 30 kW) [19][20][21][22][23][24][25] Device characteristics:…”

Section: Scientific Potentialmentioning

confidence: 99%

Quo Vadis Power Engineering? A Slow Transition from Centralised Power Generation to Distributed Power Generation And what about Poland?

Kiciński

2018

Mechanics and Mechanical Engineering

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Is the world's power engineering at a crossroads? Does the rapid development of new emerging fields such as the Internet of Things, smart city or e-mobility make us take a completely different point of view on the world's energy future? What are our visions and development forecasts related to this? Who is right, Exxon Mobil Corporation or the visionary investor Elon Musk? The author of this article is trying to find answers to these and many other questions. In the long-term perspective, a transition from centralised power generation to distributed power generation seems to be inevitable, and that is the central message of this article.The article also presents the situation of the Polish power engineering against the background of global trends, as well as proposals for solving the smog problem using anti-smog technologies developed at the Institute of Fluid-Flow Machinery of the Polish Academy of Sciences in Gdańsk and by launching a pilot project that will cover 1,000 households equipped with these technologies. The author and his closest co-workers recommend equipping boilers, including both older and newer ones, with low-power electrostatic precipitators. In this way, one can burn low-quality fuels while keeping the emission of airborne dust at a low level. It is a quick and not pricey solution to the smog problem.

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Two-stage electrostatic precipitator with dual-corona particle precharger for PM2.5 particles removal

Cited by 49 publications

References 73 publications

Pulse Current of Multi-Needle Negative Corona Discharge and Its Electromagnetic Radiation Characteristics

Pulse Current of Multi-Needle Negative Corona Discharge and Its Electromagnetic Radiation Characteristics

Particulate Matter Emission Reduction from Marine Diesel Engines by Electrohydrodynamic Methods

Quo Vadis Power Engineering? A Slow Transition from Centralised Power Generation to Distributed Power Generation And what about Poland?

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