Three gas reburning field evaluations: Final results and long term performance

Technical Report · Mon Jan 01 04:00:00 EST 1996

OSTI ID:269421

Folsom, B; Sommer, T ^[1]; Ritz, H ^[2]

---

1. Energy and Environmental Research Corp., Irvine, CA (United States)
2. Pittsburgh Energy Technology Center, Pittsburgh, PA (United States); and others

Gas Reburning (GR) is a NO{sub x} control technology for boiler/furnace applications. Natural gas is injected above the burner zone to produce a slightly fuel rich zone where NO{sub x} may be reduced by 60-70%. Overfire air completes the gas combustion. Three comprehensive GR demonstrations have been completed on U.S. utility boilers as part of the Clean Coal Technology Program. The boilers included tangential, wall, and cyclone configurations firing coal with capacities of 33-158 MW net. Two of the units were tested fining 100% gas as the primary and reburning fuels and on one unit GR was integrated with low NO{sub x} coal burners. One of the demonstrations included first and second generation GR designs. The second generation improvements included elimination of flue gas recirculation (FGR) as the natural gas carrier and dual concentric overfire air ports. Data are presented showing both parametric test results and long term performance in normal utility service. NO{sub x} reductions up to 76% and NO{sub x} levels as low as 0.05 lb/10{sup 6} Btu (on 100% gas) were achieved with no significant operational impacts.

• Research Organization: Electric Power Research Inst., Palo Alto, CA (United States)
• OSTI ID: 269421
• Report Number(s): EPRI-TR--105978-V4; CONF-9505150--Vol.4
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
AIR POLLUTION CONTROL
BOILERS
COAL
COMBUSTION
DENITRIFICATION
DESIGN
FIELD TESTS
FLUE GAS
FOSSIL-FUEL POWER PLANTS
NITROGEN OXIDES
PERFORMANCE
POLLUTION CONTROL EQUIPMENT