An investigation to define the physical/chemical constraints which limit NO sub x emission reduction achievable by reburning

Technical Report · Sun Jan 01 04:00:00 EST 1989

DOI:https://doi.org/10.2172/6844389· OSTI ID:6844389

Chen, S. L.; Ho, L.; Pershing, D. W.

Reburning is a combustion modification technique which removes NO{sub x} from combustion products by using fuel as a reducing agent. Previous studies have shown that natural gas is more effective than coal as a reburning fuel. Objectives of this program are to define the chemical and physical constraints which prevent the attainment of 80% NO{sub x} reduction with reburning and to test improved configurations for reburning as an advanced NO{sub x} control technique for coal-fired boilers. Bench scale studies are designed to screen the chemical and physical means for enhancing reburning efficiency. Pilot studies will evaluate the impacts of finite rate mixing on the effectiveness of the various concepts. The program consists of the following: (1) bench scale studies on N{sub 2} formation in reburning zone and XN conversion in burnout zone; (2) pilot scale studies; (3) interpretation and generalization; and a final report. This quarterly report documents the bench scale experimental results on the enhancement of reburning with distributed fuel addition and advanced hybrid process. The experiments were conducted in the bench scale Control Temperature Tower (CTT). 7 figs.

• Research Organization: Energy and Environmental Research Corp., Irvine, CA (USA)
• Sponsoring Organization: DOE/FE
• DOE Contract Number: AC22-86PC91025
• OSTI ID: 6844389
• Report Number(s): DOE/PC/91025-T6; ON: DE90012650
• Country of Publication: United States
• Language: English

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