Abstract
Mercury speciation and removal were investigated for a newly developed hybrid filter (HF) originally designed to remove fine particulates and retrofitted to the exhaust cleaning system in a coal-fired power plant. The test plant used a blend of anthracite and semi-anthracite coals for combustion. At the boiler outlet, Hg0 was the dominant mercury species in the flue gas at 89% of total Hg. After passing through the electrostatic precipitator (ESP) and HF, Hg2 + became the dominant species owing to oxidation of Hg at the lower temperature and interaction with other air pollutants in the flue gas. The Hg2 + subsequently accumulated as Hgp by bonding with fly ash. Due to higher oxidation of Hg in the HF than in the ESP, more Hg2 + could be removed by the flue gas desulfurization (FGD) system through dissolution of Hg2 + when an HF was included. By installing hybrid filters alongside the existing devices, removal efficiencies of 86.7% and 99.3% for Hg and fine particulates, respectively, could be achieved, as opposed to 62.4% and 95.2% without the installation. Applying HFs in the existing air pollution control device (APCD) configuration was therefore recommended as the best simultaneous control technology for Hg and fine particulate matter (PM) at the test plant.
| Original language | English |
|---|---|
| Pages (from-to) | 35-40 |
| Number of pages | 6 |
| Journal | International Journal of Coal Geology |
| Volume | 170 |
| DOIs | |
| Publication status | Published - 2017 Feb 1 |
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All Science Journal Classification (ASJC) codes
- Fuel Technology
- Geology
- Economic Geology
- Stratigraphy
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Speciation and capture performance of mercury by a hybrid filter in a coal-fired power plant. / Sung, Jin Ho; Back, Seung Ki; Jung, Bup Mook; Kang, Youn Suk; Lee, Chul Gyu; Jang, Ha Na; Seo, Yong Chil.
In: International Journal of Coal Geology, Vol. 170, 01.02.2017, p. 35-40.Research output: Contribution to journal › Article
TY - JOUR
T1 - Speciation and capture performance of mercury by a hybrid filter in a coal-fired power plant
AU - Sung, Jin Ho
AU - Back, Seung Ki
AU - Jung, Bup Mook
AU - Kang, Youn Suk
AU - Lee, Chul Gyu
AU - Jang, Ha Na
AU - Seo, Yong Chil
PY - 2017/2/1
Y1 - 2017/2/1
N2 - Mercury speciation and removal were investigated for a newly developed hybrid filter (HF) originally designed to remove fine particulates and retrofitted to the exhaust cleaning system in a coal-fired power plant. The test plant used a blend of anthracite and semi-anthracite coals for combustion. At the boiler outlet, Hg0 was the dominant mercury species in the flue gas at 89% of total Hg. After passing through the electrostatic precipitator (ESP) and HF, Hg2 + became the dominant species owing to oxidation of Hg at the lower temperature and interaction with other air pollutants in the flue gas. The Hg2 + subsequently accumulated as Hgp by bonding with fly ash. Due to higher oxidation of Hg in the HF than in the ESP, more Hg2 + could be removed by the flue gas desulfurization (FGD) system through dissolution of Hg2 + when an HF was included. By installing hybrid filters alongside the existing devices, removal efficiencies of 86.7% and 99.3% for Hg and fine particulates, respectively, could be achieved, as opposed to 62.4% and 95.2% without the installation. Applying HFs in the existing air pollution control device (APCD) configuration was therefore recommended as the best simultaneous control technology for Hg and fine particulate matter (PM) at the test plant.
AB - Mercury speciation and removal were investigated for a newly developed hybrid filter (HF) originally designed to remove fine particulates and retrofitted to the exhaust cleaning system in a coal-fired power plant. The test plant used a blend of anthracite and semi-anthracite coals for combustion. At the boiler outlet, Hg0 was the dominant mercury species in the flue gas at 89% of total Hg. After passing through the electrostatic precipitator (ESP) and HF, Hg2 + became the dominant species owing to oxidation of Hg at the lower temperature and interaction with other air pollutants in the flue gas. The Hg2 + subsequently accumulated as Hgp by bonding with fly ash. Due to higher oxidation of Hg in the HF than in the ESP, more Hg2 + could be removed by the flue gas desulfurization (FGD) system through dissolution of Hg2 + when an HF was included. By installing hybrid filters alongside the existing devices, removal efficiencies of 86.7% and 99.3% for Hg and fine particulates, respectively, could be achieved, as opposed to 62.4% and 95.2% without the installation. Applying HFs in the existing air pollution control device (APCD) configuration was therefore recommended as the best simultaneous control technology for Hg and fine particulate matter (PM) at the test plant.
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UR - http://www.scopus.com/inward/citedby.url?scp=85005980971&partnerID=8YFLogxK
U2 - 10.1016/j.coal.2016.10.008
DO - 10.1016/j.coal.2016.10.008
M3 - Article
VL - 170
SP - 35
EP - 40
JO - International Journal of Coal Geology
JF - International Journal of Coal Geology
SN - 0166-5162
ER -