BURNER AND COMBUSTION EQUIPMENT

PURPOSE:To eliminate the attachment of the liquid fuel to the inner walls of a combustion chamber, atomize the liquid fuel, and reduce NOx by forming a straight flow in the periphery of the swirl flows and spraying liquid fuel in the form of a film to the boundary between the swirl flows and the str...

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Main Authors KOBAYASHI YOSHINOBU, KURODA MICHIO, NARATO KIYOSHI, TSUKAHARA SATOSHI, TANIGUCHI MASAYUKI, MURAKAMI TADATAKA, AZUHATA SHIGERU
Format Patent
LanguageEnglish
Published 11.05.1992
Subjects
AIR SUPPLY
BLASTING
BURNERS
COMBUSTION APPARATUS
COMBUSTION PROCESSES
DRAUGHT-INDUCING
FEEDING FUEL TO COMBUSTION APPARATUS
FLUES
GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
HEATING
LIGHTING
MECHANICAL ENGINEERING
REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTIONRESIDUES
SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS
WEAPONS
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Summary:PURPOSE:To eliminate the attachment of the liquid fuel to the inner walls of a combustion chamber, atomize the liquid fuel, and reduce NOx by forming a straight flow in the periphery of the swirl flows and spraying liquid fuel in the form of a film to the boundary between the swirl flows and the straight flow. CONSTITUTION:The liquid fuel is preheated by a preheater 70 and goes through a fuel distributor 76, fuel supply pipe 47, and fuel reservoir 46, and is supplied to the inner circumferential face on the upstream side of an inner cylinder. The combustion air that flows into the inner cylinder 45 forms swirl flows in the inner cylinder 45 by a swirler 50 and presses the liquid fuel supplied to the inner circumferential face of the inner cylinder 45 on to the inner cicumferential face to form the fuel into a film. Since the diameter of the inner circumferential face of the inner cylinder 45 is extended as it goes to the downstream side, the thickness of the fuel in the film shape becomes thinner as it goes to the downstream. The liquid fuel that reaches the downstream end of the inner cylinder 45 is blown out to the boundary face between the swirl flow formed in the inner cylinder 45 and the straight flow formed between the inner cylinder 45 and the outer cylinder 41, and atomized by receiving the shearing force generated by the actions of the swirl flows and the straight flow.
Bibliography:Application Number: JP19900256404