TY - JOUR
T1 - Development and qualification of an innovative wet electrostatic precipitator in view of gaseous iodine filtration on laboratory-scale
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.
KW - Iodine
KW - Nuclear safety
KW - PASSAM
KW - Severe accident mitigation systems
KW - WESP
UR - http://www.scopus.com/inward/record.url?scp=85036660312&partnerID=8YFLogxK
U2 - 10.1016/j.nucengdes.2017.12.002
DO - 10.1016/j.nucengdes.2017.12.002
M3 - Article
AN - SCOPUS:85036660312
SN - 0029-5493
VL - 327
SP - 7
EP - 21
JO - Nuclear Engineering and Design
JF - Nuclear Engineering and Design
ER -