Record Display for the EPA National Library Catalog


Main Title Combustion Modification Tests on a Subscale Cement Kiln for NOx Reduction.
Author Carter, W. A. ; Benson, R. C. ;
CORP Author KVB, Inc., Irvine, CA.;Industrial Environmental Research Lab., Research Triangle Park, NC.
Year Published 1984
Report Number KVB72/806031/1900-D190; EPA-68-02-3690; EPA-600/7-84/075;
Stock Number PB84-223502
Additional Subjects Kilns ; Nitrogen oxides ; Performance evaluation ; Combustion products ; Industrial wastes ; Field tests ; Revisions ; Design criteria ; Flue gases ; Air pollution ; Combustion modification ; Air pollution abatement
Library Call Number Additional Info Location Last
NTIS  PB84-223502 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 72p
The report gives results of field tests of a subscale rotary cement kiln to evaluate the effect of various combustion modifications on gaseous emissions, using a research kiln donated by a cement company. The test unit was 8.2 m (27 ft) long and 0.38 m (15 in.) inside diameter and will produce 68 kg (150 lb) of clinker per hour. A coal burner was designed and built for the test program, and the kiln was reworked to incorporate heated secondary air and flue gas recirculation (FGR). The effects on NO emissions of FGR, diluted primary air, primary/secondary air ratio, burner tip velocity, and secondary air temperature were evaluated. The most effective combustion modification for coal firing was determined to be dilution of primary air with inert gas, which reduced NO by nearly 40 percent when the primary-air oxygen concentration was reduced to 12 percent.