Electrostatic charging of aerosol as a mechanism of gas cleaning from submicron particles

Bologa, A.; Paur, Hanns‐Rudolf; Wäscher, Thomas

doi:10.1016/s0015-1882(01)80581-4

Cited by 33 publications

(10 citation statements)

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“…In fact, heterogeneous condensation and agglomeration by humidifying have been applied to many exhaust-gas pollution-control devices. Tsai et al (2005) added a fine water mist to a Venturi scrubber operated at room temperature, and concluded that nanoparticles and submicrometer particles can agglomerate to form micrometer-sized particles, corroborating conclusions stated previously by Bologa et al (Bologa, Paur, and Wascher 2001). However, while Yang et al (2010) improved WFGD performance by adding water mist into the flue gas, few reports have been published that added water mist to a flue gas before treating it with a WESP.…”

Section: Introductionsupporting

confidence: 70%

Purification characteristics of fine particulate matter treated by a self-flushing wet electrostatic precipitator equipped with a flexible electrode

Wang

et al. 2018

Journal of the Air & Waste Management Association

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Wet electrostatic precipitators, as fine filtration equipment, were generally applicable to coal-fired plants to reduce PM emissions in China. However, high energy consumption and unstable operation, such as water usage and spray washing directly in the electric field, seriously restricted the further development. The utilization of self-flushing wet electrostatic precipitator can solve these problems to some extent.

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Section: Introductionsupporting

confidence: 70%

Purification characteristics of fine particulate matter treated by a self-flushing wet electrostatic precipitator equipped with a flexible electrode

Wang

et al. 2018

Journal of the Air & Waste Management Association

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“…Other types of ionising scrubbers for dust precipitation have been developed and are offered by several companies, but their main application is the control of aerosols and fine particles in industrial processes (Bologa et al, 2001).…”

Section: Wet Scrubbersmentioning

confidence: 99%

Air pollution control systems in WtE units: An overview

Vehlow¹

2015

Waste Management

129

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“…Wet electrostatic scrubber is a spray tower equipped with an electrified spray unit for electrically charged water droplets generation and, optionally, a particle pre-charging unit. The electrostatic forces between droplets and particles lead to a more rapid and effective particle capture onto the droplets compared with conventional spray scrubbers [18,[22][23][24][25][26][27]. Besides, wet electrostatic scrubbers inherit all the structural and process advantages of conventional scrubbers as the low pressure drops and simple design and operation, as well as the ability to simultaneous removal of soluble gases.…”

Section: Water Electrified Sprays For Emission Control In Energy Prodmentioning

confidence: 99%

Water Electrified Sprays for Emission Control in Energy Production Processes

F.¹,

Carotenuto²,

Manna³

et al. 2016

IJHT

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Energy generation by fossil fuels produces significant amount of pollutants. Among the most toxic of them, there are SO2 and particulate matter. The first is a toxic gas that is subjected to severe regulations, the second is only partially regulated since the most toxic fractions of particles, i.e. the ultrafine particles, are nor easily measured neither properly captured by conventional technologies available at commercial level. Electrification of water sprays provide a reliable way to improve both the SO2 mass transfer rates and the particle capture efficiency, thanks to the multiple effects of electric charges imposed on the sprayed droplets. In this paper, we report experimental findings on the use of electrified sprays of water to reduce SO2 and particulate matter form a model flue gas. Tests were performed both laboratory and pilot scale. The experiments are compared with the performances of the same spray operated without electrification. In the pilot scale unit, particle removal efficiency is negligible and SO2 removal is up to 97% with the uncharged spray, The use of induction charging and exposure to corona pre-charging allow achieving >93% reduction of particulate matter and to >99% SO2 reductions. Experiments at laboratory scale shed light on the mechanisms of particle and SO2 capture. In particular, the experimental results revealed that a stochastic scavenging model presented in our former works (data not shown) well described the particle capture and that for charged droplets, the absorption rate for SO2 improved by about 60% respect to uncharged droplets.

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Electrostatic charging of aerosol as a mechanism of gas cleaning from submicron particles

Cited by 33 publications

References 0 publications

Purification characteristics of fine particulate matter treated by a self-flushing wet electrostatic precipitator equipped with a flexible electrode

Purification characteristics of fine particulate matter treated by a self-flushing wet electrostatic precipitator equipped with a flexible electrode

Air pollution control systems in WtE units: An overview

Water Electrified Sprays for Emission Control in Energy Production Processes

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