The role of pressure drop and flow redistribution on modeling mercury control using sorbent injection in baghouse filters

Journal Article · Wed Mar 15 00:00:00 EST 2006 · Journal of the Air and Waste Management Association

DOI:https://doi.org/10.1080/10473289.2006.10464457· OSTI ID:20740962

Flora, Joseph R.V.; Hargis, Richard A; O'Dowd, William J; Karash, Andrew; Pennline, Henry W; Vidic, Radisav D ^[1]

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1. University of South Carolina, Columbia, SC (United States). Department of Civil and Environmental Engineering

A mathematical model based on simple cake filtration theory was coupled to a previously developed two-stage mathematical model for mercury (Hg) removal from coal combustion using powdered activated carbon injection upstream of a baghouse filter. Values of the average permeability of the filter cake and the filter resistance extracted from the model were 4.4 x 10{sup -13}m{sup 2} and 2.5 x 10{sup -4}m{sup -1}, respectively. The flow is redistributed during partial cleaning of the filter, with flows higher across the newly cleaned filter section. The calculated average Hg removal efficiency from the baghouse is lower because of the high mass flux of Hg exiting the filter in the newly cleaned section. The model shows that calculated average Hg removal is affected by permeability, filter resistance, fraction of the baghouse cleaned, and cleaning interval. 17 refs., 8 figs., 2 tabs.

• OSTI ID: 20740962
• Journal Information: Journal of the Air and Waste Management Association, Vol. 3, Issue 56; ISSN 1047-3289
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
01 COAL, LIGNITE, AND PEAT
PRESSURE DROP
BAGHOUSES
MATHEMATICAL MODELS
MERCURY
REMOVAL
SORBENT INJECTION PROCESSES
PERMEABILITY
EFFICIENCY
ACTIVATED CARBON
PULVERIZED FUELS
COAL
CLEANING
FLY ASH
FLUE GAS
FABRIC FILTERS
PILOT PLANTS
COKING
PARAMETRIC ANALYSIS
TIME DEPENDENCE