Low emissions combustor

Power plants – Combustion products used as motive fluid – Combustion products generator

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Details

60748, 60752, 60754, 60755, F02C 100, F02G 300

Patent

active

051232480

ABSTRACT:
A combustor effective for reducing exhaust emissions is disclosed. The combustor includes first and second liners defining a primary combustion zone, and a plurality of circumferentially spaced carburetors. Each of the carburetors includes a fuel injector providing fuel into an air swirler for mixing the air and fuel and providing a fuel/air mixture into the combustor primary zone. The combustor also includes means for obtaining a fuel distribution from each of the carburetors extending radially from a first liner upstream end through a center region of the combustor to a second liner upstream end with values of the fuel distribution at the center region being generally no greater than about values of the fuel distribution adjacent to at least one of the first and second liners. The first and second liners have upstream portions characterized by the absence of film cooling thereof.

REFERENCES:
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patent: 3946552 (1976-03-01), Weinstein et al.
patent: 3972182 (1976-08-01), Salvi
patent: 3978662 (1976-10-01), DuBell et al.
patent: 4248940 (1981-02-01), Goward et al.
patent: 4265085 (1981-05-01), Fox et al.
patent: 4555901 (1985-12-01), Wakeman et al.
patent: 4584834 (1986-04-01), Koshoffer et al.
patent: 4916906 (1991-04-01), Vogt
Northern Research and Engineering Corporation (NREC), "The Design and Development of Gas Turbine Combustors", vol. I, 1980, Cover page and pp. iii, 3.1-3.5, 3.28-3.31, 3.40, 5.1-5.3, 5.14-5.15, 5.88, 7.1, 7.2, 7.65, and vol. II: Cover page and pp. 4.8, 4.9, and 4.31.
T. G. Hill et al., "Analytical Fuel Property Effects--Small Combustors", NASA CR-174848, Mar. 1985.

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