| Main Title |
Evaluation of primary air vitiation for nitric oxide reduction in a rotary cement kiln : Volume 2. Data supplement A. / |
| Author |
Benson, R. C. ;
Frohoff, R. A. ;
Parker, N. R.
|
| Other Authors |
|
| CORP Author |
KVB, Inc., Irvine, CA.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab. |
| Publisher |
U.S. Environmental Protection Agency, Air and Energy Engineering Research Laboratory, |
| Year Published |
1986 |
| Report Number |
EPA/600/7-86/034B; EPA-68-02-3690 |
| Stock Number |
PB87-113254 |
| Subjects |
Kilns, Rotary
|
| Additional Subjects |
Nitrogen oxide(NO) ;
Air pollution control ;
Combustion products ;
Cement industry ;
Tables(Data) ;
Calibration ;
Cement kilns ;
Primary air vitiation ;
Baghouses ;
Emission factors
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB87-113254 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
134 pages : illustrations ; 28 cm |
| Abstract |
The report gives results of tests to evaluate combustion modifications for nitric oxide (NO) reduction and cement product quality in a pilot-scale long-dry-process cement kiln firing pulverized coal. The kiln is rated at 11.35 kg/s (1080 tons/day) of cement with a thermal input rate of 70.3 MW (240 million Btu/hr). Of the combustion modifications evaluated in previous studies, vitiation of the primary air with inert gas (nitrogen) was considered the best alternative for NO reduction on a pilot-scale kiln. The percent reduction was established from a reference baseline of 1050 ppm (corrected to 3% O2) and a kiln exit oxygen of 1.82%. The NO volumetric emissions were lowered to 880 ppm (corrected to 3% O2) with a kiln exit oxygen of 0.7%. NOx reductions during the short term nitrogen injection tests were about 25-30% with no adverse effects on product quality. Because of the interacting feed chemistry/kiln operations, it was not possible to clearly isolate the effect of nitrogen injection. |
| Notes |
Caption title. "October 1986." "EPA/600/7-86/034b." Microfiche. |
