High expansion fuel injection slot jet and method for...

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

Reexamination Certificate

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C060S738000, C060S748000, C060S752000

Reexamination Certificate

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07832212

ABSTRACT:
A premixing device includes an air inlet, at least one fuel inlet slot having a wall profile configured to form a fuel boundary layer along a portion of a wall of the premixing device, a mixing chamber, and at least one diverging fuel injection slot jet disposed inside the at least one fuel inlet slot, the slot jet being configured to create a flow separation region in a diverging portion thereof to generate mixing turbulence at an outlet of the slot jet to aerodynamically enhance a mixing of the fuel from the boundary layer with compressed air without causing a boundary layer flow separation and a flame holding in the mixing chamber. Low-emission combustors, gas turbine combustors, methods for premixing a fuel and an oxidizer in a combustion system, a gas turbine, and a gas to liquid system using the premixing device are also disclosed.

REFERENCES:
patent: 5103630 (1992-04-01), Correa
patent: 6094916 (2000-08-01), Puri et al.
patent: 6772595 (2004-08-01), Martling et al.
patent: 6865889 (2005-03-01), Mancini et al.
patent: 2002/0162333 (2002-11-01), Zelina
U.S. Appl. No. 11/273,212, filed Nov. 14, 2005, Evulet.

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