Photochemical Removal of Mercury from Flue Gas
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- 作者：Evan J. Granite and Henry W. Pennline
- 刊名：Industrial & Engineering Chemistry Research
- 出版年：2002
- 出版时间：October 30, 2002
- 年：2002
- 卷：41
- 期：22
- 页码：5470 - 5476
- 全文大小：62K
- 年卷期：v.41,no.22(October 30, 2002)
- ISSN：1520-5045
文摘
Photochemical reactions of mercury with various constituents in flue gas produced by burningcoal could be an attractive alternative to dry sorbent- or wet scrubber-based processes for mercurycontrol. The sensitized oxidation of elemental mercury using 253.7-nm ultraviolet radiation hasbeen extensively studied. The photochemistry of elemental mercury in simulated flue gases wasexamined using quartz flow reactors. Mercury-containing simulated flue gases at temperaturesbetween 80 and 350 
F were irradiated with 253.7-nm ultraviolet light. Results are presentedfor the photochemical removal of elemental mercury from simulated flue gases, as well as fromnitrogen mixtures that contain oxygen, water vapor, or nitrogen oxide. Optimization of the processparameters, including light intensity, is discussed. The implications of photochemical oxidationof mercury with respect to direct ultraviolet irradiation of flue gas for mercury control, analysisof gases for mercury content, and atmospheric reactions are discussed.
F were irradiated with 253.7-nm ultraviolet light. Results are presentedfor the photochemical removal of elemental mercury from simulated flue gases, as well as fromnitrogen mixtures that contain oxygen, water vapor, or nitrogen oxide. Optimization of the processparameters, including light intensity, is discussed. The implications of photochemical oxidationof mercury with respect to direct ultraviolet irradiation of flue gas for mercury control, analysisof gases for mercury content, and atmospheric reactions are discussed.