Development and qualification of an innovative wet electrostatic precipitator in view of gaseous iodine filtration on laboratory-scale

Mélany Gouëllo; Jouni Hokkinen; Teemu Kärkelä; Pekka Rantanen; Ari Auvinen

doi:10.1016/j.nucengdes.2017.12.002

Development and qualification of an innovative wet electrostatic precipitator in view of gaseous iodine filtration on laboratory-scale

Mélany Gouëllo^*, Jouni Hokkinen, Teemu Kärkelä, Pekka Rantanen, Ari Auvinen

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

3 Citations (Scopus)

Abstract

An innovative method to filter gaseous iodine based on a wet electrostatic precipitator (WESP) was developed and tested. It is characterized by an ozone feed located before the WESP inlet to oxidize gaseous iodine into iodine oxide particles. Tests were carried out with titanium dioxide particles, first, and then with gaseous molecular iodine (I₂) and methyl iodide (CH₃I). The applied electric voltage between the electrodes, the total flow rate inside the WESP, and the injection of water droplets before the WESP were varied. The filtration efficiency based on the number of particles was calculated from ELPI and CPC measurements at the inlet and the outlet of the WESP. To determine the mass filtration efficiency for iodine, ICP-MS analyses were performed. Once the operation parameters were optimised for the tested conditions, the WESP ensured a mass filtration efficiency of 99.9% and a particle number based filtration efficiency up to 99.9% against molecular iodine. The efficiency for the filtration of methyl iodide was not as high. The filtration efficiency data are presented covering the particle size range of 0.04–2 µm.

Original language	English
Pages (from-to)	7-21
Number of pages	15
Journal	Nuclear Engineering and Design
Volume	327
DOIs	https://doi.org/10.1016/j.nucengdes.2017.12.002
Publication status	Published - 1 Feb 2018
MoE publication type	A1 Journal article-refereed

Keywords

Iodine
Nuclear safety
PASSAM
Severe accident mitigation systems
WESP

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10.1016/j.nucengdes.2017.12.002

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title = "Development and qualification of an innovative wet electrostatic precipitator in view of gaseous iodine filtration on laboratory-scale",

abstract = "An innovative method to filter gaseous iodine based on a wet electrostatic precipitator (WESP) was developed and tested. It is characterized by an ozone feed located before the WESP inlet to oxidize gaseous iodine into iodine oxide particles. Tests were carried out with titanium dioxide particles, first, and then with gaseous molecular iodine (I2) and methyl iodide (CH3I). The applied electric voltage between the electrodes, the total flow rate inside the WESP, and the injection of water droplets before the WESP were varied. The filtration efficiency based on the number of particles was calculated from ELPI and CPC measurements at the inlet and the outlet of the WESP. To determine the mass filtration efficiency for iodine, ICP-MS analyses were performed. Once the operation parameters were optimised for the tested conditions, the WESP ensured a mass filtration efficiency of 99.9% and a particle number based filtration efficiency up to 99.9% against molecular iodine. The efficiency for the filtration of methyl iodide was not as high. The filtration efficiency data are presented covering the particle size range of 0.04–2 µm.",

keywords = "Iodine, Nuclear safety, PASSAM, Severe accident mitigation systems, WESP",

author = "M{\'e}lany Gou{\"e}llo and Jouni Hokkinen and Teemu K{\"a}rkel{\"a} and Pekka Rantanen and Ari Auvinen",

note = "Project: 100586 Funding Information: The authors thank the European Atomic Energy Community (Euratom) for showing strong interest in the PASSAM Project, and for funding it in the frame of the 7th framework programme FP7/2007-2013 under grant agreement no. 323217. The coordination of PASSAM by the French IRSN is acknowledged. Publisher Copyright: {\textcopyright} 2017 Copyright: Copyright 2017 Elsevier B.V., All rights reserved.",

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AU - Gouëllo, Mélany

AU - Hokkinen, Jouni

AU - Kärkelä, Teemu

AU - Rantanen, Pekka

AU - Auvinen, Ari

N1 - Project: 100586 Funding Information: The authors thank the European Atomic Energy Community (Euratom) for showing strong interest in the PASSAM Project, and for funding it in the frame of the 7th framework programme FP7/2007-2013 under grant agreement no. 323217. The coordination of PASSAM by the French IRSN is acknowledged. Publisher Copyright: © 2017 Copyright: Copyright 2017 Elsevier B.V., All rights reserved.

PY - 2018/2/1

Y1 - 2018/2/1

N2 - An innovative method to filter gaseous iodine based on a wet electrostatic precipitator (WESP) was developed and tested. It is characterized by an ozone feed located before the WESP inlet to oxidize gaseous iodine into iodine oxide particles. Tests were carried out with titanium dioxide particles, first, and then with gaseous molecular iodine (I2) and methyl iodide (CH3I). The applied electric voltage between the electrodes, the total flow rate inside the WESP, and the injection of water droplets before the WESP were varied. The filtration efficiency based on the number of particles was calculated from ELPI and CPC measurements at the inlet and the outlet of the WESP. To determine the mass filtration efficiency for iodine, ICP-MS analyses were performed. Once the operation parameters were optimised for the tested conditions, the WESP ensured a mass filtration efficiency of 99.9% and a particle number based filtration efficiency up to 99.9% against molecular iodine. The efficiency for the filtration of methyl iodide was not as high. The filtration efficiency data are presented covering the particle size range of 0.04–2 µm.

AB - An innovative method to filter gaseous iodine based on a wet electrostatic precipitator (WESP) was developed and tested. It is characterized by an ozone feed located before the WESP inlet to oxidize gaseous iodine into iodine oxide particles. Tests were carried out with titanium dioxide particles, first, and then with gaseous molecular iodine (I2) and methyl iodide (CH3I). The applied electric voltage between the electrodes, the total flow rate inside the WESP, and the injection of water droplets before the WESP were varied. The filtration efficiency based on the number of particles was calculated from ELPI and CPC measurements at the inlet and the outlet of the WESP. To determine the mass filtration efficiency for iodine, ICP-MS analyses were performed. Once the operation parameters were optimised for the tested conditions, the WESP ensured a mass filtration efficiency of 99.9% and a particle number based filtration efficiency up to 99.9% against molecular iodine. The efficiency for the filtration of methyl iodide was not as high. The filtration efficiency data are presented covering the particle size range of 0.04–2 µm.

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Development and qualification of an innovative wet electrostatic precipitator in view of gaseous iodine filtration on laboratory-scale

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Keywords

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