Investigation on elemental mercury oxidation mechanism by non-thermal plasma treatment
(2010) In Fuel Processing Technology 91(11). p.1395-1400- Abstract
- Converting elemental mercury into divalent compound is one of the most important steps for mercury abatement from coal fired flue gas. The oxidation of elemental mercury was investigated in this paper using dielectric barrier discharge (DBD) non-thermal plasma (NTP) technology at room temperature. Effects of different flue gas components like oxygen, moisture, HCl, NO and SO2 were investigated. Results indicate that active radicals including O, O-3 and OH all contribute to the oxidation of elemental mercury. Under the conditions of 5% O-2 in the simulated flue gas, about 90.2% of Hg-0 was observed to be oxidized at 3.68 kV discharge voltage. The increase of discharge voltage, O-2 level and H2O content can all improve the oxidation rate,... (More)
- Converting elemental mercury into divalent compound is one of the most important steps for mercury abatement from coal fired flue gas. The oxidation of elemental mercury was investigated in this paper using dielectric barrier discharge (DBD) non-thermal plasma (NTP) technology at room temperature. Effects of different flue gas components like oxygen, moisture, HCl, NO and SO2 were investigated. Results indicate that active radicals including O, O-3 and OH all contribute to the oxidation of elemental mercury. Under the conditions of 5% O-2 in the simulated flue gas, about 90.2% of Hg-0 was observed to be oxidized at 3.68 kV discharge voltage. The increase of discharge voltage, O-2 level and H2O content can all improve the oxidation rate, individually. With O-2 and H2O both existed, there is an optimal moisture level for the mercury oxidation during the NTP treatment. In this test, the observed optimal moisture level was around 0.74% by volume. Hydrogen chloride can promote the oxidation of mercury due to chlorine atoms produced in the plasma process. Both NO and SO2 have inhibitory effects on mercury oxidation, which can be attributed to their competitive consumption of O-3 and O. (c) 2010 Elsevier By. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1727239
- author
- Wang, Z. H. ; Jiang, S. D. ; Zhu, Y. Q. ; Zhou, J. S. ; Zhou, J. H. ; Li, Zhongshan LU and Cen, K. F.
- organization
- publishing date
- 2010
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- DBD, Plasma, Mercury, Oxidation, Nip
- in
- Fuel Processing Technology
- volume
- 91
- issue
- 11
- pages
- 1395 - 1400
- publisher
- Elsevier
- external identifiers
-
- wos:000282550900006
- scopus:77956394273
- ISSN
- 0378-3820
- DOI
- 10.1016/j.fuproc.2010.05.012
- language
- English
- LU publication?
- yes
- id
- cc6e6345-6249-4154-bbe1-22d507f890ad (old id 1727239)
- date added to LUP
- 2016-04-01 13:21:54
- date last changed
- 2022-01-27 18:46:32
@article{cc6e6345-6249-4154-bbe1-22d507f890ad, abstract = {{Converting elemental mercury into divalent compound is one of the most important steps for mercury abatement from coal fired flue gas. The oxidation of elemental mercury was investigated in this paper using dielectric barrier discharge (DBD) non-thermal plasma (NTP) technology at room temperature. Effects of different flue gas components like oxygen, moisture, HCl, NO and SO2 were investigated. Results indicate that active radicals including O, O-3 and OH all contribute to the oxidation of elemental mercury. Under the conditions of 5% O-2 in the simulated flue gas, about 90.2% of Hg-0 was observed to be oxidized at 3.68 kV discharge voltage. The increase of discharge voltage, O-2 level and H2O content can all improve the oxidation rate, individually. With O-2 and H2O both existed, there is an optimal moisture level for the mercury oxidation during the NTP treatment. In this test, the observed optimal moisture level was around 0.74% by volume. Hydrogen chloride can promote the oxidation of mercury due to chlorine atoms produced in the plasma process. Both NO and SO2 have inhibitory effects on mercury oxidation, which can be attributed to their competitive consumption of O-3 and O. (c) 2010 Elsevier By. All rights reserved.}}, author = {{Wang, Z. H. and Jiang, S. D. and Zhu, Y. Q. and Zhou, J. S. and Zhou, J. H. and Li, Zhongshan and Cen, K. F.}}, issn = {{0378-3820}}, keywords = {{DBD; Plasma; Mercury; Oxidation; Nip}}, language = {{eng}}, number = {{11}}, pages = {{1395--1400}}, publisher = {{Elsevier}}, series = {{Fuel Processing Technology}}, title = {{Investigation on elemental mercury oxidation mechanism by non-thermal plasma treatment}}, url = {{http://dx.doi.org/10.1016/j.fuproc.2010.05.012}}, doi = {{10.1016/j.fuproc.2010.05.012}}, volume = {{91}}, year = {{2010}}, }