Bipolar charged aerosol agglomeration with alternating electric field in laminar gas flow

Antero Laitinen (Corresponding Author), Jukka Hautanen, Jorma Keskinen, Esko Kauppinen, Jorma Jokiniemi, Kari Lehtinen

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

This paper presents the results of an experimental study for a method of increasing the efficiency of electrostatic precipitators for the collection of fly ash particles of submicron size. An alternating electric field was used to induce agglomeration of bipolarly charged particles (bipolar AC-agglomeration). A bench-scale AC-agglomeration test apparatus with bipolar corona charger was constructed. Test aerosol was generated from vegetable oil. The total mass loading was 0.2 gm−3 (5 × 106 particles cm−3), mass median diameter was 0.5 μm. Count median diameter was 0.2 μm, and geometrical standard deviation was 1.8. Residence time in the agglomerator was 4.8 s and the agglomerator field was 5.0 kV cm−1 (rms). Systematic experiments were conducted to investigate the agglomeration efficiency of the system. The percentage decrease in number concentration of 0.1–1.0 μm sized particles was found to be between 17 and 19%.

Original languageEnglish
Pages (from-to)303 - 315
Number of pages13
JournalJournal of Electrostatics
Volume38
Issue number4
DOIs
Publication statusPublished - 1996
MoE publication typeA1 Journal article-refereed

Fingerprint

Coal Ash
Plant Oils
agglomeration
Aerosols
Static Electricity
Particle Size
gas flow
Flow of gases
aerosols
Agglomeration
Gases
Electric fields
electric fields
alternating current
electrostatic precipitators
Electrostatic precipitators
fly ash
vegetables
Vegetable oils
particle mass

Cite this

Laitinen, Antero ; Hautanen, Jukka ; Keskinen, Jorma ; Kauppinen, Esko ; Jokiniemi, Jorma ; Lehtinen, Kari. / Bipolar charged aerosol agglomeration with alternating electric field in laminar gas flow. In: Journal of Electrostatics. 1996 ; Vol. 38, No. 4. pp. 303 - 315.
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title = "Bipolar charged aerosol agglomeration with alternating electric field in laminar gas flow",
abstract = "This paper presents the results of an experimental study for a method of increasing the efficiency of electrostatic precipitators for the collection of fly ash particles of submicron size. An alternating electric field was used to induce agglomeration of bipolarly charged particles (bipolar AC-agglomeration). A bench-scale AC-agglomeration test apparatus with bipolar corona charger was constructed. Test aerosol was generated from vegetable oil. The total mass loading was 0.2 gm−3 (5 × 106 particles cm−3), mass median diameter was 0.5 μm. Count median diameter was 0.2 μm, and geometrical standard deviation was 1.8. Residence time in the agglomerator was 4.8 s and the agglomerator field was 5.0 kV cm−1 (rms). Systematic experiments were conducted to investigate the agglomeration efficiency of the system. The percentage decrease in number concentration of 0.1–1.0 μm sized particles was found to be between 17 and 19{\%}.",
author = "Antero Laitinen and Jukka Hautanen and Jorma Keskinen and Esko Kauppinen and Jorma Jokiniemi and Kari Lehtinen",
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Bipolar charged aerosol agglomeration with alternating electric field in laminar gas flow. / Laitinen, Antero (Corresponding Author); Hautanen, Jukka; Keskinen, Jorma; Kauppinen, Esko; Jokiniemi, Jorma; Lehtinen, Kari.

In: Journal of Electrostatics, Vol. 38, No. 4, 1996, p. 303 - 315.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Bipolar charged aerosol agglomeration with alternating electric field in laminar gas flow

AU - Laitinen, Antero

AU - Hautanen, Jukka

AU - Keskinen, Jorma

AU - Kauppinen, Esko

AU - Jokiniemi, Jorma

AU - Lehtinen, Kari

PY - 1996

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N2 - This paper presents the results of an experimental study for a method of increasing the efficiency of electrostatic precipitators for the collection of fly ash particles of submicron size. An alternating electric field was used to induce agglomeration of bipolarly charged particles (bipolar AC-agglomeration). A bench-scale AC-agglomeration test apparatus with bipolar corona charger was constructed. Test aerosol was generated from vegetable oil. The total mass loading was 0.2 gm−3 (5 × 106 particles cm−3), mass median diameter was 0.5 μm. Count median diameter was 0.2 μm, and geometrical standard deviation was 1.8. Residence time in the agglomerator was 4.8 s and the agglomerator field was 5.0 kV cm−1 (rms). Systematic experiments were conducted to investigate the agglomeration efficiency of the system. The percentage decrease in number concentration of 0.1–1.0 μm sized particles was found to be between 17 and 19%.

AB - This paper presents the results of an experimental study for a method of increasing the efficiency of electrostatic precipitators for the collection of fly ash particles of submicron size. An alternating electric field was used to induce agglomeration of bipolarly charged particles (bipolar AC-agglomeration). A bench-scale AC-agglomeration test apparatus with bipolar corona charger was constructed. Test aerosol was generated from vegetable oil. The total mass loading was 0.2 gm−3 (5 × 106 particles cm−3), mass median diameter was 0.5 μm. Count median diameter was 0.2 μm, and geometrical standard deviation was 1.8. Residence time in the agglomerator was 4.8 s and the agglomerator field was 5.0 kV cm−1 (rms). Systematic experiments were conducted to investigate the agglomeration efficiency of the system. The percentage decrease in number concentration of 0.1–1.0 μm sized particles was found to be between 17 and 19%.

U2 - 10.1016/S0304-3886(96)00038-1

DO - 10.1016/S0304-3886(96)00038-1

M3 - Article

VL - 38

SP - 303

EP - 315

JO - Journal of Electrostatics

JF - Journal of Electrostatics

SN - 0304-3886

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ER -