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International Journal of Energy for a Clean Environment
SJR: 0.195 SNIP: 0.659 CiteScore™: 1.2

ISSN Druckformat: 2150-3621
ISSN Online: 2150-363X

International Journal of Energy for a Clean Environment

Formerly Known as Clean Air: International Journal on Energy for a Clean Environment

DOI: 10.1615/InterJEnerCleanEnv.v8.i4.10
pages 287-304

FIELD EXPERIENCE WITH MERCURY EMISSIONS CONTROL FROM COAL-FIRED POWER PLANTS BY BOILER OPTIMIZATION

Carlos E. Romero
Energy Research Center, Lehigh University, Bethlehem, PA 18015, USA
Harun Bilirgen
Energy Research Center, Lehigh University, Bethlehem, PA 18015, USA
Nenad Sarunac
Energy Research Center, Lehigh University, Bethlehem, PA 18015, USA
Edward K. Levy
Energy Research Center, Lehigh University, Bethlehem, PA 18015, USA
Patents: US Patent 6,422,392B1 "Ammonia Removal From Fly Ash in an Acoustically Enhanced Fluidized Bed," July 23, 2002

ABSTRAKT

This article presents an overview of testing performed at five coal-fired units to demonstrate the benefit of boiler optimization for low-mercury operation. Units with generating capacities of 110, 160, 250, 650, and 805 MW were tested. Boiler optimizations were performed at these units using available control parameters that have an impact on Hg emissions. Optimal control settings were tested, and the benefit of "low-Hg control settings" was quantified, considering the trade-off between mercury emissions reduction, the level of unburned carbon in the fly ash, and unit thermal efficiency. Optimization results indicated a range of stack mercury emissions reductions from approximately 30% to 70%, depending on the coal type, with modest impact on unit heat rate.


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