Combustion – Flame holder having protective flame enclosing or flame... – Including means feeding air axially spaced points of the flame
Patent
1986-12-19
1991-03-26
Dority, Carroll B.
Combustion
Flame holder having protective flame enclosing or flame...
Including means feeding air axially spaced points of the flame
431 10, 60 3955, 60732, F02C 700
Patent
active
050024833
ABSTRACT:
Two-stage combustion of nitrogen-containing gas with low NO.sub.x emissions, in a combustion chamber, wherein first, pre-combustion is performed in a primary stage at an air number of approximately .lambda.=0.6 to 0.9 and subsequently post-combustion is performed in a secondary stage at an air number of approximately .lambda.=1.3 to 2, characterized in that in the primary stage, an inert substance is supplied via a multiplicity of openings in the walls of the primary stage, which substance cools the walls and keeps the combustion zone remote from the walls.
REFERENCES:
patent: 2636345 (1953-04-01), Zoller
patent: 2770097 (1956-11-01), Walker
Advanced Combustion Systems for Stationary Gas Turbine Engines, Environmental Protection Agency, FR 11405, Mar. 31, 1980, Phase II. Bench Scale Evaluation Vol. II by R. M. Pierce et al., pp. 10 & 11. Also, Phases III and IV Combustor Verification Testing Volume III, pp. 2-5.
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