Bench-scale studies of in-duct mercury capture using cupric chloride-impregnated carbons

Journal Article · Wed Apr 15 00:00:00 EDT 2009 · Environmental Science and Technology

OSTI ID:21186964

Lee, Sang-Sup; Lee, Joo-Youp; Keener, Tim C ^[1]

---

1. University of Cincinnati, Cincinnati, OH (United States). Department of Civil and Environmental Engineering

A brominated activated carbon (Darco Hg-LH) and cupric chloride-impregnated activated carbon (CuCl{sub 2}-ACs) sorbent have been tested in a bench-scale entrained-flow reactor system which was developed for simulating in-flight mercury capture in ducts upstream of particulate matter control devices. The bench-scale experimental system has been operated with the conditions of a residence time of 0.75 s and a gas temperature of 140{sup o}C to simulate typical conditions in the duct of coal-fired exhaust gas. In addition, sorbent deposition on walls which can occur in a laboratory-scale system more than in a full-scale system was significantly reduced so that additional mercury capture by the deposited sorbent was minimized. In the entrained-flow system, CuCl{sub 2}-ACs demonstrated similar performance in Hg adsorption and better performance in Hg{sup 0} oxidation than Darco Hg-LH. In addition, the carbon content of those sorbents was found to determine their Hg adsorption capability in the entrained-flow system. The bench-scale entrained-flow system was able to demonstrate the important Hg adsorption and oxidation characteristics of the tested sorbents. 18 refs., 9 figs., 1 tab.

• OSTI ID: 21186964
• Journal Information: Environmental Science and Technology, Vol. 43, Issue 8; ISSN 0013-936X
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
MERCURY
CAPTURE
ACTIVATED CARBON
COPPER CHLORIDES
BENCH-SCALE EXPERIMENTS
SORBENT INJECTION PROCESSES
FLUE GAS
SIMULATION
DEPOSITION
ENTRAINMENT
ADSORPTION
OXIDATION
ADSORBENTS
BROMINE
PERFORMANCE
CARBON
SAMPLE PREPARATION
CHEMICAL STATE
FLOW RATE