Performance of copper chloride-impregnated sorbents on mercury vapor control in an entrained-flow reactor system.
An entrained-flow system has been designed and constructed to simulate in-flight mercury (Hg) capture by sorbent injection in ducts of coal-fired utility plants. The test conditions of 1.2-sec residence time, 140 degrees C gas temperature, 6.7 m/sec (22 ft/sec) gas velocity, and 0-0.24 g/m3 (0-15 lbs of sorbent per 1 million actual cubic feet of flue gas [lb/MMacf]) sorbent injection rates were chosen to simulate conditions in the ducts. Four kinds of sorbents were used in this study. Darco Hg-LH served as a benchmark sorbent with which Hg control capability of other sorbents could be compared. Also, Darco-FGD was used as a representative raw activated carbon sorbent. Two different copper chloride-impregnated sorbents were developed in our laboratory and tested in the entrained-flow system to examine the possibility of using these sorbents at coal-fired power plants. The test results showed that one of the copper chloride sorbents has remarkable elemental mercury (Hg(o)) oxidation capability, and the other sorbent demonstrated a better performance in Hg removal than Darco Hg-LH.
Lee
Sang-Sup
SS
Department of Civil and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221-0077, USA.
Lee
Joo-Youp
JY
Keener
Tim C
TC
D000383:Agriculture; D000395:Air Pollutants, Occupational / Q000032:analysis*; D004784:Environmental Monitoring; D012275:Oryza; D010316:Particle Size; D052638:Particulate Matter / Q000032:analysis; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D013624:Taiwan
D000395:Air Pollutants, Occupational; D052638:Particulate Matter; D011084:Polycyclic Aromatic Hydrocarbons