Influence of flue gas cleaning system on characteristics of PM2.5 emission from coal-fired power plants
Abstract This study investigated the influence of precipitators and wet flue gas desulfurization equipment on characteristics of PM2.5 emission from coal-fired power stations. We measured size distribution and removal efficiencies, including hybrid electrostatic precipitator/bag filters (ESP/BAGs) w...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2014-08-01
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| Series: | International Journal of Coal Science & Technology |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s40789-014-0001-x |
| _version_ | 1797276115393314816 |
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| author | Ao Wang Qiang Song Gongming Tu Hui Wang Yong Yue Qiang Yao |
| author_facet | Ao Wang Qiang Song Gongming Tu Hui Wang Yong Yue Qiang Yao |
| author_sort | Ao Wang |
| collection | DOAJ |
| description | Abstract This study investigated the influence of precipitators and wet flue gas desulfurization equipment on characteristics of PM2.5 emission from coal-fired power stations. We measured size distribution and removal efficiencies, including hybrid electrostatic precipitator/bag filters (ESP/BAGs) which have rarely been studied. A bimodal distribution of particle concentrations was observed at the inlet of each precipitator. After the precipitators, particle concentrations were significantly reduced. Although a bimodal distribution was still observed, all peak positions shifted to the smaller end. The removal efficiencies of hybrid ESP/BAGs reached 99 % for PM2.5, which is considerably higher than those for other types of precipitators. In particular, the influence of hybrid ESP/BAG operating conditions on the performance of dust removal was explored. The efficiency of hybrid ESP/BAGs decreased by 1.9 % when the first electrostatic field was shut down. The concentrations and distributions of particulate matter were also measured in three coal-fired power plants before and after desulfurization devices. The results showed diverse removal efficiencies for different desulfurization towers. The reason for the difference requires further research. We estimated the influence of removal technology for particulate matter on total emissions in China. Substituting ESPs with hybrid ESP/BAGs could reduce the total emissions to 104.3 thousand tons, with 47.48 thousand tons of PM2.5. |
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| format | Article |
| id | doaj.art-4575ab07c5854ca09a54bd5d55c1c652 |
| institution | Directory Open Access Journal |
| issn | 2095-8293 2198-7823 |
| language | English |
| last_indexed | 2024-03-07T15:23:42Z |
| publishDate | 2014-08-01 |
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| record_format | Article |
| series | International Journal of Coal Science & Technology |
| spelling | doaj.art-4575ab07c5854ca09a54bd5d55c1c6522024-03-05T17:25:44ZengSpringerOpenInternational Journal of Coal Science & Technology2095-82932198-78232014-08-011141210.1007/s40789-014-0001-xInfluence of flue gas cleaning system on characteristics of PM2.5 emission from coal-fired power plantsAo Wang0Qiang Song1Gongming Tu2Hui Wang3Yong Yue4Qiang Yao5Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua UniversityKey Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua UniversityKey Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua UniversityKey Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua UniversityKey Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua UniversityKey Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua UniversityAbstract This study investigated the influence of precipitators and wet flue gas desulfurization equipment on characteristics of PM2.5 emission from coal-fired power stations. We measured size distribution and removal efficiencies, including hybrid electrostatic precipitator/bag filters (ESP/BAGs) which have rarely been studied. A bimodal distribution of particle concentrations was observed at the inlet of each precipitator. After the precipitators, particle concentrations were significantly reduced. Although a bimodal distribution was still observed, all peak positions shifted to the smaller end. The removal efficiencies of hybrid ESP/BAGs reached 99 % for PM2.5, which is considerably higher than those for other types of precipitators. In particular, the influence of hybrid ESP/BAG operating conditions on the performance of dust removal was explored. The efficiency of hybrid ESP/BAGs decreased by 1.9 % when the first electrostatic field was shut down. The concentrations and distributions of particulate matter were also measured in three coal-fired power plants before and after desulfurization devices. The results showed diverse removal efficiencies for different desulfurization towers. The reason for the difference requires further research. We estimated the influence of removal technology for particulate matter on total emissions in China. Substituting ESPs with hybrid ESP/BAGs could reduce the total emissions to 104.3 thousand tons, with 47.48 thousand tons of PM2.5.https://doi.org/10.1007/s40789-014-0001-xCoal-fired power stationPrecipitationPM2.5Emission characteristicsElectrostatic precipitatorESP/BAG |
| spellingShingle | Ao Wang Qiang Song Gongming Tu Hui Wang Yong Yue Qiang Yao Influence of flue gas cleaning system on characteristics of PM2.5 emission from coal-fired power plants International Journal of Coal Science & Technology Coal-fired power station Precipitation PM2.5 Emission characteristics Electrostatic precipitator ESP/BAG |
| title | Influence of flue gas cleaning system on characteristics of PM2.5 emission from coal-fired power plants |
| title_full | Influence of flue gas cleaning system on characteristics of PM2.5 emission from coal-fired power plants |
| title_fullStr | Influence of flue gas cleaning system on characteristics of PM2.5 emission from coal-fired power plants |
| title_full_unstemmed | Influence of flue gas cleaning system on characteristics of PM2.5 emission from coal-fired power plants |
| title_short | Influence of flue gas cleaning system on characteristics of PM2.5 emission from coal-fired power plants |
| title_sort | influence of flue gas cleaning system on characteristics of pm2 5 emission from coal fired power plants |
| topic | Coal-fired power station Precipitation PM2.5 Emission characteristics Electrostatic precipitator ESP/BAG |
| url | https://doi.org/10.1007/s40789-014-0001-x |
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