Development of new sorbents to remove mercury and selenium from flue gas. Final report, September 1, 1993--August 31, 1994
- Babcock and Wilcox Co., Alliance, OH (United States)
Mercury (Hg) and selenium (Se) are two of the volatile trace metals in coal, which are often not captured by conventional gas clean up devices of coal-fired boilers. An alternative is to use sorbents to capture the volatile components of trace metals after coal combustion. In this project sorbent screening tests were performed in which ten sorbents were selected to remove metallic mercury in N{sub 2}. These sorbents included activated carbon, char prepared from Ohio No. 5 coal, molecular sieves, silica gel, aluminum oxide, hydrated lime, Wyoming bentonite, kaolin, and Amberite IR-120 (an ion-exchanger). The sorbents were selected based on published information and B&W`s experience on mercury removal. The promising sorbent was then selected and modified for detailed studies of removal of mercury and selenium compounds. The sorbents were tested in a bench-scale adsorption facility. A known amount of each sorbent was loaded in the column as a packed bed. A carrier gas was bubbled through the mercury and selenium compounds. The vaporized species were carried by the gas and went through the sorbent beds. The amount of mercury and selenium compounds captured by the sorbents was determined by atomic absorption. Results are discussed.
- Research Organization:
- Ohio Coal Development Office, Columbus, OH (United States)
- Sponsoring Organization:
- Ohio State Government, Columbus, OH (United States)
- OSTI ID:
- 57877
- Report Number(s):
- OCDO-95010711; ON: TI95010711
- Resource Relation:
- Other Information: PBD: Feb 1995
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
20 FOSSIL-FUELED POWER PLANTS
FLUE GAS
CLEANING
MERCURY
REMOVAL
SELENIUM
ADSORBENTS
COMPARATIVE EVALUATIONS
DEMETALLIZATION
SORBENT INJECTION PROCESSES
ACTIVATED CARBON
CHARS
MOLECULAR SIEVES
SILICA GEL
ALUMINIUM OXIDES
CALCIUM HYDROXIDES
KAOLIN
EXPERIMENTAL DATA
PROGRESS REPORT