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RECORD NUMBER: 18 OF 39

OLS Field Name OLS Field Data
Main Title Evaluation of internally staged coal burners and sorbent jet aerodynamics for combined SO2/NOx control in utility boilers. Volume 1, Testing in a 10 million Btu/hr experimental furnace /
Author Cetegen, B. M. ; Clough, J. ; England, G. C. ; Johnson, T. R. ; Kwan, Y.
Other Authors
Author Title of a Work
Cetegen, B.
Clough, J.
England, G.
CORP Author Energy and Environmental Research Corp., Irvine, CA.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Publisher U.S. Environmental Protection Agency, Office of Research and Development, Air and Energy Engineering Research Laboratory,
Year Published 1989
Report Number EPA/600/7-89/007; EPA-68-02-3923
Stock Number PB89-207955
Subjects Coal--Combustion--Measurement. ; Boilers--Testing. ; Sulfur dioxide--Measurement. ; Nitric oxide--Measurement. ; Sulphur dioxide--Measurement
Additional Subjects Air pollution abatement ; Burners ; Coal ; Sulfur dioxide ; Nitric oxides ; Emission ; Nozzles ; Jet flow ; Sorbents ; Air pollution ; Exhaust gases
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB89-207955 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation 297 pages : illustrations ; 28 cm
Abstract
The document gives results of tests conducted in a 2 MWt experimental furnace to: investigate ways to reduce NOx emissions from utility coal burners without external air ports (i.e., with internal fuel/air staging); and improve the performance of calcium-based sorbents for SO2 control, by modifying the design and operation of the sorbent jets. NOx emissions could be reduced by 50-60% (to 300-500 ppm) without external ports by using two secondary air channels in the burner throat, and by modifying the coal nozzle. A baffle in the outer secondary air channel also appears necessary where high secondary air velocities cannot be avoided. Sorbent testing confirmed that jet design/operation must focus on protecting the sorbent from seeing high peak temperatures: a peak temperature of 1230-1290 C gave optimum sorbent performance. SO2 removals of 80% at Ca/S = 2 were achieved with a pressure-hydrated lime at this temperature. Jet design to increase sorbent heating rate might also have a secondary effect in improving performance.
Notes
"Contract no. 68-02-3923." Caption title. "June 1989." "EPA/600/7-89/007." "D. Bruce Henschel, project officer." Microfiche.