Mercury capture by native fly ash carbons in coal-fired power plants |
| |
Authors: | James C Hower Constance L Senior Eric M Suuberg Robert H Hurt Jennifer L Wilcox Edwin S Olson |
| |
Affiliation: | 1. University of Kentucky, Center for Applied Energy Research, 2540 Research Park Drive, Lexington, KY 40511, USA;2. Reaction Engineering International, 77 West 200 South, Suite 210, Salt Lake City, UT 84101, USA;3. Division of Engineering, Brown University, Providence, RI 02912, USA;4. Energy Resources Engineering, Stanford University, Stanford, CA 94305, USA;5. University of North Dakota, Energy & Environmental Research Center, Grand Forks, ND 58201, USA |
| |
Abstract: | The control of mercury in the air emissions from coal-fired power plants is an ongoing challenge. The native unburned carbons in fly ash can capture varying amounts of Hg depending upon the temperature and composition of the flue gas at the air pollution control device, with Hg capture increasing with a decrease in temperature; the amount of carbon in the fly ash, with Hg capture increasing with an increase in carbon; and the form of the carbon and the consequent surface area of the carbon, with Hg capture increasing with an increase in surface area. The latter is influenced by the rank of the feed coal, with carbons derived from the combustion of low-rank coals having a greater surface area than carbons from bituminous- and anthracite-rank coals. |
| |
Keywords: | Mercury Coal Fly ash Unburned carbon Pollution control |
本文献已被 ScienceDirect 等数据库收录! |
|