Nitrogen oxide abatement by distributed fuel addition. Quarterly report No. 3, February 1, 1988--April 30, 1988
This research is directed towards the development of engineering guidelines that define the application of distributed fuel addition as a technique for NO{sub x} abatement. It is expected that multiple fuel and air addition in the post-flame of a combustion process will increase free radical concentrations which destroy nitrogenous species and thus help them decay toward their equilibrium concentrations, which can be very low in that region of the combustor. Screening experiments were conducted on a laboratory scale downfired combustor. The objective was to compare NO{sub x} emissions arising from various combustion configurations, including fuel and/or air staging. Although the primary focus of this research is on NO control, a secondary effort was directed towards the measurement of N{sub 2}O emissions from various coal combustion processes. N{sub 2}O has been identified as a trace gas responsible for stratospheric ozone depletion, and has been hypothesized to arise from combustion processes, in amounts roughly proportional to NO emissions. Results presented in this report showed that the ratio N{sub 2}O/NO was far from constant. The introduction of secondary air into a combustion process was accompanied an increase in N{sub 2}O emissions. The measured N{sub 2}O was always less than 10 ppm even under the most favorable combustion conditions. Reburning with premixed fuel and air mixtures was not effective in reducing NO emissions.
- Research Organization:
- Arizona Univ., Tucson, AZ (United States). Dept. of Chemical Engineering
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC22-87PC79850
- OSTI ID:
- 10110469
- Report Number(s):
- DOE/PC/79850-3; ON: DE92005205
- Resource Relation:
- Other Information: PBD: 27 Jun 1988
- Country of Publication:
- United States
- Language:
- English
Similar Records
Nitrogen oxide abatement by distributed fuel addition. Quarterly report No. 5, August 1, 1988--October 31, 1988
Nitrogen oxide abatement by distributed fuel addition. Quarterly report No. 4, May 1, 1988--July 30, 1988
Related Subjects
20 FOSSIL-FUELED POWER PLANTS
54 ENVIRONMENTAL SCIENCES
NITROGEN OXIDES
AIR POLLUTION ABATEMENT
RADICALS
QUANTITY RATIO
PROGRESS REPORT
STAGED COMBUSTION
COAL
FUEL INJECTION SYSTEMS
NITROUS OXIDE
NITRIC OXIDE
010800
014000
200202
540120
WASTE MANAGEMENT
COMBUSTION
NOXIOUS GAS AND PARTICULATE EMISSIONS
CHEMICALS MONITORING AND TRANSPORT