Accession Number : ADD014284

Title :   Externally Vaporizing System for Turbine Combustor.

Descriptive Note : Patent, Filed 10 Sep 86, patented 13 Jun 89,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Gleason, Clifford C ; Ekstedt, Edward E

Report Date : 13 Jun 1989

Pagination or Media Count : 5

Abstract : The present invention relates to turbine engines, and, in particular, relates to a combustor therein. The present invention is directed toward providing a combustor in which the undesirable characteristics of prior liquid fuel systems are overcome in light of the advantages of a purely gaseous system. The externally vaporizing system of the present invention incorporates an auxiliary burner which is supplied with compressor discharge air at a rate which is regulated to the main fuel flow rate. The auxiliary burner is operated at approximately stoichiometric fuel-air-ratio, in order to provide very-hot, nearly-inert gases for vaporizing the main fuel supply. The main fuel is sprayed in the auxiliary burner exit gas stream where rapid mixing and evaporation occur. The resulting vaporized fuel/inert gas mixture (at about 800 F., preferably) is then ducted and distributed to the individual main combustor fuel injectors where it is injected into the premixing ducts. Patents. (KT)

Descriptors :   *COMBUSTORS, *GAS TURBINES, *VAPORIZATION, *PATENTS, AIR, AUXILIARY, BURNERS, COMPRESSORS, DUCTS, ENGINES, EVAPORATION, FLOW RATE, FUEL INJECTORS, FUEL SYSTEMS, FUELS, GASES, INERT MATERIALS, LIQUIDS, MIXING, MIXTURES, SUPPLIES, TURBINES

Subject Categories : Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE