Sorbent injection into a slipstream baghouse for mercury control: Project summary |
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Authors: | Jeffrey S. Thompson John H. Pavlish Lucinda L. Hamre Melanie D. Jensen David Smith Steve Podwin Lynn A. Brickett |
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Affiliation: | 1. Energy and Environmental Research Center, 15 North 23rd Street, Stop 9018, Grand Forks, ND 58202-9018, USA;2. SaskPower, 2901 Power House Drive, Regina, Saskatchewan, Canada S4P 0S1;3. National Energy Technology Laboratory, Department of Energy, 626 Cochrans Mill Road, P.O. Box 10940, MS 922-273C, Pittsburgh, PA 15236-0940, USA |
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Abstract: | A project led by the Energy and Environmental Research Center to test and demonstrate sorbent injection as a cost-effective mercury control technology for utilities burning lignites has shown effective mercury capture under a range of operating conditions. Screening, parametric, and long-term tests were carried out at a slipstream facility representing an electrostatic precipitator–activated carbon injection–fabric filter configuration (called a TOXECON™ in the United States). Screening tests of sorbent injection evaluated nine different sorbents, including both treated and standard activated carbon, to compare mercury capture as a function of sorbent injection rate. Parametric tests evaluated several variables including air-to-cloth (A/C) ratio, flue gas temperature, cleaning frequency, and dust loading to determine the effect on mercury control and systems operation. Long-term tests (approximately 2 months in duration) evaluated the sustainability of systems operation. |
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Keywords: | Electrostatic precipitator&ndash fabric filter Trace elements Continuous mercury monitor Sorbent injection Mercury Mercury control |
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