||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 /
Cetegen, B. M. ;
Clough, J. ;
England, G. C. ;
Johnson, T. R. ;
||Energy and Environmental Research Corp., Irvine, CA.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
|| U.S. Environmental Protection Agency, Office of Research and Development, Air and Energy Engineering Research Laboratory,
Sulfur dioxide--Measurement ;
Nitric oxide--Measurement ;
Air pollution abatement ;
Sulfur dioxide ;
Nitric oxides ;
Jet flow ;
Air pollution ;
||Some EPA libraries have a fiche copy filed under the call number shown.
||297 pages : illustrations ; 28 cm
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.
"Contract no. 68-02-3923." Caption title. "June 1989." "EPA/600/7-89/007." "D. Bruce Henschel, project officer." Microfiche.