Novel Mercury Oxidant and Sorbent for Mercury Emissions Control from Coal-fired Power Plants |
| |
Authors: | Joo-Youp Lee Yuhong Ju Sang-Sup Lee Tim C Keener Rajender S Varma |
| |
Institution: | (1) Department of Civil and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221-0071, USA;(2) Analytical Science, Pacific Core R&D, Dow Chemical (China) Investment Co., Ltd. Shanghai Branch, 24/F Aurora Plaza, 99 Fucheng Rd, Shanghai Pudong, 200120, China;(3) Sustainable Technology Division, National Risk Management Research Laboratory, U. S. Environmental Protection Agency, MS 443, 26 W. Martin Luther King Drive, Cincinnati, OH 45268, USA |
| |
Abstract: | The authors have successfully developed novel efficient and cost-effective sorbent and oxidant for removing mercury from power
plant flue gases. These sorbent and oxidant offer great promise for controlling mercury emissions from coal-fired power plants
burning a wide range of coals including bituminous, sub-bituminous, and lignite coals. A preliminary analysis from the bench-scale
test results shows that this new sorbent will be thermally more stable and cost-effective in comparison with any promoted
mercury sorbents currently available in the marketplace. In addition to the sorbent, an excellent elemental mercury (Hg(0))
oxidant has also been developed, and will enable coal-fired power plants equipped with wet scrubbers to simultaneously control
their mercury emissions as well as their sulfur oxides emissions. This will work by converting all elemental mercury to an
oxidized form which will be removed by the wet scrubber. This will result in significant cost savings for mercury emissions
control to the atmosphere, and will help in keeping electric costs low. The sorbent and oxidant will benefit from the utilization
of a waste stream from the printed circuit board (PCB) industry, and would thus be environmentally beneficial to both of the
utility and electronics industries. The sorbent also demonstrated thermal stability up to 350°C, suggesting a possibility
of an application in pulverized coal-fired power plants equipped with hot-side electrostatic precipitators and coal gasification
plants. |
| |
Keywords: | Clean coal technologies Coal-fired utility plants Fixed-bed test Mercury emissions control Oxidant Sorbent |
本文献已被 SpringerLink 等数据库收录! |
|