Sage Journals: Discover world-class research

Abstract

Aiming at improving the trapping performance of submicron particles, the magnetic field was introduced into the outer vortex electrostatic cyclone (ESC), and the dust-removal mechanism under the action of electromagnetic field was investigated. Besides, the theoretical model was established to analyze the interaction between fluid flow field, electromagnetic field and particle dynamic field, and the influences of magnetic field on submicron particles collection efficiency at different working voltages and gas velocities were simulated and discussed. The results indicate that the introduction of magnetic field obviously enhances the ESC trapping performance for submicron particles. High working voltage and low gas velocity at a given magnetic flux density are both more favorable for trapping submicron particles, but the magnetic field effect is more obvious at high gas velocity, as well as at low working voltage. Furthermore, at the same working voltage and gas velocity, the contribution of magnetic field to collection efficiency increases with the applied magnetic flux density increased, but the increment gradually decreases, which can lay significant foundation for optimal design of submicron particles removal in ESC.

Keywords

Applied magnetic field electrostatic cyclone submicron particles removal mechanism trapping performance

Get full access to this article

View all access options for this article.

References

Siadaty

Kheradmand

and Ghadiri

, Study of inlet temperature effect on single and double inlets cyclone performance, Advanced Powder Technology 28 (2017), 1459–1473, DOI: 10.1016/j.apt.2017.03.015.

, Research on improving the dust separation efficiency of cyclone dust collector, Wuhan University of Science and Technology, 2015.

K.B.

Liu

G.F.

and Weng

J.S.

, Numerical simulation and experimental study on pressure drop of radial jet cyclone, Separation & Purification Technology 166 (2016), 9–15, DOI: 10.1016/j.seppur.2016.04.015.

Jin

X.F.

Wang

E.L.

and Wang

C.P.

, The analysis of the performances of all the dedust technologies and the application prosperity of the bag filter in the coal fired utility boilers, Boiler Technology 38 (2007), 98–102.

Huang

Yao

and Li

S.Q.

, Progress in technology of electrostatic enhancement for trapping of PM2.5, Power System Engineering 19 (2003), 44–46.

Huang

Deng

Zhi

et al., Numerical analysis of a novel gas-liquid pre-separation cyclone, Separation & Purification Technology 194 (2017), 470–479, DOI: 10.1016/j.seppur.2017.11.066.

Dietz

P.W.

, Electrostatically enhanced cyclone separators, Powder Technology 31 (1982), 221–226, DOI: 10.1016/0032-5910(82)89008-6.

Boericke

R.R.

Giles

W.G.

Dietz

P.W.

et al., Electrocyclone for high-temperature, high-pressure dust trapping, Journal of Energy 2 (1983), 43–49, DOI: 10.2514/3.62635.

Plucinski

Gradon

and Nowicki

, Collection of aerosol particles in a cyclone with an external electric field, Journal Aerosol Science 6 (1989), 66–72, DOI: 10.1016/0021-8502(89)90058-X.

10.

Lim

K.S.

Lee

K.W.

and Kuhlman

M.R.

, An experimental study of the performance factors affecting particle collection efficiency of the electrocyclone, Aerosol Science Technology 35 (2001), 969–977, DOI: 10.1080/027868201753306732.

11.

Yoshida

Hayase

Fukui

and Yamamoto

, Effect of conical length on separation performance of sub-micron particles by electrical hydro-cyclone, Powder Technology 219 (2012), 29–36, DOI: 10.1016/j.powtec.2011.12.002.

12.

Lin

G.Y.

Cuc

L.T.

Tsai

C.J.

et al., High-efficiency wet electrocyclone for removing fine and nanosized particles, Separation & Purification Technology 114 (2013), 99–107, DOI: 10.1016/j.seppur.2013.04.039.

13.

X.F.

and Gan

S.K.

, Study on the sediment characteristics of the electrostatic cyclonic precipitator, Journal of Jilin Institute of Chemical Technology 114 (2013), 99–107.

14.

Titov

, The impact of re-entrainment on the electrocyclone effectiveness, Separation & Purification Technology 156 (2015), 795–802, DOI: 10.1016/j.seppur.2015.11.004.

15.

S.N.

Pan

J.F.

et al., Experiments on the earthed atomizing corona discharge cyclone precipitate, Environmental Engineering 34 (2016), 78–82+107.

16.

Mazyan

W.I.

Ahmadi

Ahmed

et al., Enhancement of solid particle separation efficiency in gas cyclones using electro-hydrodynamic method, Separation & Purification Technology 182 (2017), 29–35, DOI: 10.1016/j.seppur.2017.03.034.

17.

Ganegama

B.S.

and Leung

A.Y.

, Improvements of the cyclone separator performance by down-comer tubes, Journal of Hazardous Materials 311 (2016), 100–114, DOI: 10.1016/j.jhazmat.2016.02.072.

18.

Zhang

J.P.

Fang

Pan

W.G.

et al., PM2.5 removal performance of a wire-pipe ESP under multi-field coupling and applied magnetic field, International Journal of Applied Electromagnetics & Mechanics 46 (2014), 739–750, DOI: 10.3233/JAE-141970.

19.

Tsouris

and Scott

T.C.

, Flocculation of paramagnetic particles in a magnetic field, Journal of Colloid & Interface Science 171 (1995), 319–330, DOI: 10.1006/jcis.1995.1186.

20.

Prakash

and Pratim

, Analytical expressions of the collision frequency function for aggregation of magnetic particles, Journal of Aerosol Science 36 (2005), 455–469, DOI: 10.1016/j.jaerosci.2004.10.008.

21.

Ukai

Morimoto

and Maekawa

, Cluster-cluster aggregations of superparamagnetic particles in a rotational magnetic field, Physical Review E Statistical Nonlinear & Soft Matter Physics 83 (2011), 061406, DOI: 10.1103/PhysRevE.83.061406.

22.

Park

J.Y.

Han

S.B.

and Park

S.H.

, A study on the effect of magnetic field in electrostatic precipitator for improving precipitation efficiency of particulate matter, Journal of the Korean Institute of Illuminating and Electrical Installation Engineers 22 (2008), 122–129, DOI: 10.5207/JIEIE.2008.22.12.122.

23.

Zhang

J.P.

Y.Y.

H.L.

et al., Numerical study on PM10 collection efficiency in a wire-cylinder electrostatic precipitator under multi-field coupling, International Journal of Environmental Studies 71 (2014), 344–359, DOI: 10.1080/00207233.2014.910388.

24.

Ahn

K.H.

Hanz

J.S.

and Kim

G.H.

, Measurement of mono-disperse particle charge in DC plasma, Key Engineering Materials 270 (2004), 855–859.

25.

Yang

L.F.

Wang

J.H.

Wang

and Xu

K.Y.

, Experimental investigations on the effects of discharge-electrode configurations on electrostatic-cyclone performance, Energy Research & Information 22 (2006), 63–68.

Trapping performance improvement of submicron particles in electrostatic cyclone by the applied magnetic field

Abstract

Keywords

Get full access to this article

References