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    HYBRID COMBUSTOR AND FUEL NOZZLE THEREFOR
    1.
    发明专利
    HYBRID COMBUSTOR AND FUEL NOZZLE THEREFOR 失效

    公开(公告)号：JP2000199602A

    公开(公告)日：2000-07-18

    申请号：JP31047599

    申请日：1999-11-01

    Applicant: GEN ELECTRIC

    Inventor： HUNG STEPHEN LAN-SUN ,  LOVETT JEFFERY ALLAN ,  BEEBE KENNETH WINSTON ,  CUTRONE MARTIN BERNARD ,  CORREA SANJAY MARC

    IPC: F23C5/14 ,  F23C7/02 ,  F23C13/00 ,  F23C99/00 ,  F23R3/28 ,  F23R3/30 ,  F23R3/34 ,  F23R3/40 ,  F23C11/00

    Abstract: PROBLEM TO BE SOLVED: To provide a hybrid combustor which provides stable high and low levels of operation while minimizing emission of NOx, CO, and unburnt hydrocarbon. SOLUTION: A hybrid combustor comprises a casing 12 having a chamber 14, a catalytic combustor 20 disposed in the chamber, and a non-premixed combustor 30 disposed in the chamber. The hybrid combustor 10 may comprises a fuel nozzle comprising a casing having a chamber, and a body supportable in the chamber to define a passageway between the body and the casing. The passageway has an inlet for receiving a stream of air and an outlet for discharging a stream of fuel and air, and the body includes a tapering 15 downstream body 13. Consequently, flow separation of the fuel and air mixture from the body is inhibited and a generally uniform fuel and air mixture is provided.

    FLOW ADJUSTING APPARATUS FOR CATALYST COMBUSTOR AND METHOD FOR OBTAINING UNIFORM GAS VELOCITY DISTRIBUTION
    2.
    发明专利
    FLOW ADJUSTING APPARATUS FOR CATALYST COMBUSTOR AND METHOD FOR OBTAINING UNIFORM GAS VELOCITY DISTRIBUTION 审中-公开

    公开(公告)号：JP2002174426A

    公开(公告)日：2002-06-21

    申请号：JP2001346819

    申请日：2001-11-13

    Applicant: GEN ELECTRIC

    Inventor： BEEBE KENNETH WINSTON ,  KEELING LESLIE BOYD

    IPC: F23C13/00 ,  F23R3/16 ,  F23R3/40 ,  F23R3/54 ,  F23C11/00

    Abstract: PROBLEM TO BE SOLVED: To provide an apparatus 56 for adjusting a high temperature gas flow in a catalyst combustor before it enters a catalyst reactor 42. SOLUTION: An apparatus comprises at least one disk, or most preferably 2 or more disks 64, 68 fixed to a shroud 60 so as to be disposed in a flat plane substantially perpendicular to the direction of a high temperature gas flow. Each disk comprises a plurality of small cells where a flow channel passing therethrough is directed axially. The cell serves to linearize a gas flow and acts as resistance against the flow of the gas passing therethrough. This forms a static pressure gradient for upstream and downstream flow fields of a honeycomb disk, which causes a flow adjustment so as to form a further uniform axial flow field. This in turn ensures further uniform fuel/air concentration distribution and a velocity distribution at an inlet of a catalyst reactor.

    PREMIXTURE DRY TYPE GAS TURBINE COMBUSTOR HAVING GAS FUEL LEAN DIRECT INJECTION
    3.
    发明专利
    PREMIXTURE DRY TYPE GAS TURBINE COMBUSTOR HAVING GAS FUEL LEAN DIRECT INJECTION 失效

    公开(公告)号：JPH1047679A

    公开(公告)日：1998-02-20

    申请号：JP10995397

    申请日：1997-04-28

    Applicant: GEN ELECTRIC

    Inventor： BEEBE KENNETH WINSTON

    IPC: F02C9/34 ,  F23C99/00 ,  F23D14/02 ,  F23L7/00 ,  F23R3/06 ,  F23R3/14 ,  F23R3/28 ,  F23R3/30 ,  F23R3/34 ,  F23C11/00

    Abstract: PROBLEM TO BE SOLVED: To reduce discharge of an atmospheric pollutant, especially, a nitrogen oxide when high load operation is effected by providing a secondary combustion device which is selectively operable by a high load range mode of a plurality of gas turbine modes. SOLUTION: Premixed combustion is effected under a high load state, and hydrocarbon fuel and air are fed to an LDI fuel injector assembly 50. The LDI fuel injection assembly 50 introduces secondary fuel and air to a secondary reaction region 1, wherein automatic ignition is effected by a high temperature present in a combustion liner 28 in an intermediate state and a high load state. Since a secondary combustion/air mixture entering a transition member 18 is lean, a combustion reaction temperature is lower than a stoichiometric flame temperature, a ratio in which hot NOX is generated is low. Thus, since a time of residence in the transition member 18 is short and a ratio in which hot NOX is generated is low, slight hot NOX is formed in a secondary fuel combustion period.

    6.
    发明专利
    未知

    公开(公告)号：DE69100910D1

    公开(公告)日：1994-02-17

    申请号：DE69100910

    申请日：1991-04-11

    Applicant: GEN ELECTRIC

    Inventor： BEEBE KENNETH WINSTON

    IPC: F02C3/30 ,  F23R3/00 ,  F23R3/34 ,  F23R3/40

    Abstract: During low-load operating conditions, preburner combustion products are supplied with a chemical reactant to reduce NOx. The preburner products of combustion are mixed with a hydrocarbon fuel in the presence of a combustion catalyst (34) to ignite and initiate a catalytic combustion reaction. The preburner (12) is then shut down. The fuel/air mixture supplied the catalytic reactor bed during the mid-load operating range of the turbine is sufficiently lean to produce a combustion reaction temperature too low to produce thermal NOx. Thus, at low-load conditions, preburner combustion occurs with NOX reduction by chemical reactant, while the catalytic combustion occurs at mid-range operating conditions at temperatures too low to produce NOx. For high-load operating conditions, the catalytic combustion occurs as previously described and additional lean fuel/air mixture is supplied the reaction zone whereby thermal NOx is likewise avoided.

    7.
    发明专利
    未知

    公开(公告)号：NO911712L

    公开(公告)日：1991-11-04

    申请号：NO911712

    申请日：1991-04-30

    Applicant: GEN ELECTRIC

    Inventor： BEEBE KENNETH WINSTON

    IPC: F02C7/18 ,  F23R3/04 ,  F23R3/18 ,  F23R3/34 ,  F23R3/42 ,  F23R3/16

    Abstract: A method and apparatus are provided for reducing NOx emissions in dual stage, dual mode gas turbine combustors. The gas turbine combustor includes first (25) and second (26) combustion chambers separated by a reduced diameter throat section (100). The throat section is formed by converging and diverging wall sections constructed of porous material. A liner (101) is provided in surrounding relationship to the throat region to form a plenum by which predetermined amounts of air are metered into the plenum and permitted to pass through the porous throat wall sections.

    10.
    发明专利
    未知

    公开(公告)号：DE69724031T2

    公开(公告)日：2004-06-03

    申请号：DE69724031

    申请日：1997-04-29

    Applicant: GEN ELECTRIC

    Inventor： BEEBE KENNETH WINSTON

    IPC: F02C9/34 ,  F23C99/00 ,  F23D14/02 ,  F23L7/00 ,  F23R3/06 ,  F23R3/14 ,  F23R3/28 ,  F23R3/30 ,  F23R3/34

    Abstract: Lean premixed combustion of a hydrocarbon fuel and air is combined with lean direct injection of hydrocarbon fuel and air into a combustor downstream of the premixed reaction zone in order to achieve extremely low levels of emissions of oxides of nitrogen at the high combustor exit temperatures required by advanced heavy duty industrial gas turbines. One or more premixing fuel nozzles (14) are used to supply a lean mixture of hydrocarbon fuel and air to the main or primary reaction zone (8) of a gas turbine combustor (10). This lean fuel/air mixture has an adiabatic flame temperature below the temperature that would result in substantial thermal NOx formation. After this low temperature reaction has been completed, additional fuel and air are injected (50) into the products of combustion in a secondary reaction zone (19) downstream of the main reaction zone in order to raise the temperature of the mixture to the level required to operate an advanced, high efficiency, heavy duty industrial gas turbine at high load. Formation of nitrogen oxides in the region after this secondary fuel and air injection is minimized by partial premixing of fuel and air prior to ignition and by minimizing the residence time between the secondary fuel injection and the turbine first stage inlet.

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