Prediction for particle removal efficiency of a reverse jet scrubber

Lim, K.S.; Lee, S.H.; Park, H.S.

doi:10.1016/j.jaerosci.2006.06.010

Cited by 43 publications

(21 citation statements)

References 6 publications

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“…Cyclones [21,22] as well as other inertial separation systems [23] present a very low installation cost, but work well with a particulate size bigger than 10 mm, which is outside the desired application range (PM2.5). Scrubber removal efficiency is influenced by the capacity of each single water droplet to collect particles by using one or more of the scrubbing mechanisms, which are diffusion, interception and inertial impaction [24,25]. Diffusion is a particle capture mechanism based on Brownian motion and it is the dominant scrubbing mechanism for small particles (diameter lower than 0.1 mm), since small particles attain a high diffusion coefficient.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of different scrubber systems for removal of particulate emissions from a small size biomass boiler

Bianchini

Cento

Golfera

et al. 2016

Biomass and Bioenergy

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Section: Introductionmentioning

confidence: 99%

Performance analysis of different scrubber systems for removal of particulate emissions from a small size biomass boiler

Bianchini

Cento

Golfera

et al. 2016

Biomass and Bioenergy

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“…Accordingly, there is a range of d p falling between the inertially-dominant and diffusive-dominant regimes, where neither the inertial nor diffusive mechanisms are effective, resulting in a minimum in E, often referred to as the "Greenfield gap" (Greenfield, 1957). This minimum falls, again, within 0:1 μm≲d p ≲10 μm as reported by several researchers (Gemci & Ebert, 1992;Kim et al, 2001;Lai, Dayan & Kerker, 1978;Lim, Lee & Park, 2006;Raj Mohan et al, 2008). Summarizing, the micron scale particle diameters that are most harmful to human lungs are the least effectively removed by wet scrubbers.…”

Section: Introductionmentioning

confidence: 54%

A mechanistic explanation of the increase in particle scavenging in the ultrasonic scrubber

Ran

Saylor

2015

Journal of Aerosol Science

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a b s t r a c tRan et al., 2014 developed the ultrasonic scrubber, a device which combines an ultrasonic standing wave field and a water spray to eliminate particles from a gas flow. This device, which is essentially a wet scrubber enhanced by ultrasound, was shown to significantly improve the scavenging of micron-scale particles compared to the use of a water spray alone. Herein a simulation of trajectories of the particles and spray drops in the ultrasonic scrubber are presented. These simulations and an associated model of the process are used to provide a mechanistic understanding of the enhanced scavenging observed in the ultrasonic scrubber.

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“…The collection efficiency due to inertial impaction depends on the Stokes number which represents inertial force, and increased with increasing droplet size and relative velocity. Collection efficiency due to interception increases with decreasing droplet size and increasing number concentration (Lim et al, 2006;Jung et al, 1998).…”

Section: Effects Of Electrospraymentioning

confidence: 99%

“…Diffusion is a dominant collection mechanism for particles less than 0.05 μm. However, impaction, interception as well as diffusion should be considered as collection mechanisms of particles in the range of 0.05-1.0 μm and inertial impaction is dominant for particles bigger than 1 μm (Carotenuto et al, 2010;Lim et al, 2006;Kim et al, 2001). As shown in Fig.…”

Section: Effects Of Electrospraymentioning

confidence: 99%

Experimental Study on the Enhancement of Particle Removal Efficiency in Spray Tower Scrubber Using Electrospray

Kim¹,

Kim²,

Lee³

et al. 2014

Asian J. Atmos. Environ

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There have been a lot of efforts to keep permissible emission standards and to reduce the amount of emitted air pollutants. There are several air pollution control equipments, however, wet scrubber is used to remove particulate matters and gaseous pollutants simultaneously, even if it has low collection efficiency in the particle size less than 5.0 μm. To overcome this problem, we introduced a spray tower scrubber with an electrospray system which a high voltage was indirectly applied. We found that collection efficiency of fine particles in the electrospray system was improved by increasing electrical field strength and the ratio of liquid-gas flow rate (from 41% to 84% for 0.3 μm particles). In addition, a number of small droplets generated from an electrospray system led high collection efficiency, resulting from electrostatic attraction between droplets and particles and higher collision frequency. Therefore, we can conclude that the introduction of an electrospray system is quite effective to increase the particle removal efficiency of a spray tower scrubber.

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Prediction for particle removal efficiency of a reverse jet scrubber

Cited by 43 publications

References 6 publications

Performance analysis of different scrubber systems for removal of particulate emissions from a small size biomass boiler

Performance analysis of different scrubber systems for removal of particulate emissions from a small size biomass boiler

A mechanistic explanation of the increase in particle scavenging in the ultrasonic scrubber

Experimental Study on the Enhancement of Particle Removal Efficiency in Spray Tower Scrubber Using Electrospray

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