Stability Regimes of Turbulent Nitrogen-Diluted Hydrogen Jet Flames

Conference · Thu Mar 01 04:00:00 EST 2007

OSTI ID:913258

Weiland, N T; Strakey, P A

One option for combustion in zero-emission Integrated Gasification Combined Cycle (IGCC) power plants is non-premixed combustion of nitrogen-diluted hydrogen in air. An important aspect to non-premixed combustion is flame stability or anchoring, though only a few fundamental stability studies of these flames have taken place to date. The following paper presents the results of experiments investigating the effects of nitrogen diluent fraction, jet diameter, and exit velocity on the static stability limits of a turbulent hydrogen jet flame issuing from a thin-lipped tube into a quiescent atmosphere. Four different stability limits are observed: detachment from the burner lip, reattachment to the burner lip, transition from a laminar lifted flame base to blowout or to a turbulent lifted flame, and transition from a turbulent lifted flame to blowout. The applicability of existing theories and correlations to the stability results is discussed. These results are an important step in assessing the viability of a non-premixed combustion approach using hydrogen diluted with nitrogen as a fuel.

• Research Organization: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
• Sponsoring Organization: USDOE - Office of Fossil Energy (FE)
• OSTI ID: 913258
• Report Number(s): DOE/NETL-IR-2007-099
• Country of Publication: United States
• Language: English

Related Subjects

10 SYNTHETIC FUELS
AIR
BLOWOUTS
BURNERS
COMBINED CYCLES
COMBUSTION
FASTENING
FLAMES
GASIFICATION
HYDROGEN
NITROGEN
POWER PLANTS
SOLVENTS
STABILITY
VELOCITY
VIABILITY