Development of advanced NO{sub x} control concepts for coal-fired utility boilers. Quarterly technical progress report No. 8, July 1, 1992--September 30, 1992

Technical Report · Thu Mar 04 00:00:00 EST 1993

DOI:https://doi.org/10.2172/10143665· OSTI ID:10143665

Evans, A; Pont, J N; England, G; Seeker, W R

The complete CombiNO{sub x}, process has now been demonstrated at a level that is believed to be representative of a full-scale boiler in terms of mixing capabilities. A summary of the results is displayed in Figure 5-1. While firing Illinois Coal on the Reburn Tower, Advanced Reburning was capable of reducing NO{sub x}, by 83 percent. The injection of methanol oxidized 50--58 percent of the existing NO to N0{sub 2}. Assuming that 85 percent of the newly formed N0{sub 2} can be scrubbed in a liquor modified wet-limestone scrubber, the CombiNO{sub x}, process has been shown capable of reducing NO{sub 2}, by 90--91 percent in a large pilot-scale coal-fired furnace. There is still uncertainty regarding the fate of the N0{sub 2} formed with methanol injection. Tests should be conducted to determine whether the reconversion is thermodynamic or catalytic, and what steps can be taken (such as quench rate) to prevent it from happening.

• Research Organization: Energy and Environmental Research Corp., Irvine, CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC22-90PC90363
• OSTI ID: 10143665
• Report Number(s): DOE/PC/90363-T8; ON: DE93012455
• Resource Relation: Other Information: PBD: 4 Mar 1993
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
01 COAL, LIGNITE, AND PEAT
FOSSIL-FUEL POWER PLANTS
AIR POLLUTION CONTROL
NITROGEN OXIDES
NITROGEN DIOXIDE
SCRUBBING
PROGRESS REPORT
BOILERS
STAGED COMBUSTION
METHANOL
NITRIC OXIDE
LIME-LIMESTONE WET SCRUBBING PROCESSES
OXIDATION
UREA
200202
014000
NOXIOUS GAS AND PARTICULATE EMISSIONS
COMBUSTION