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    11.
    发明专利
    未知

    公开(公告)号：DE102004026697A1

    公开(公告)日：2004-12-30

    申请号：DE102004026697

    申请日：2004-05-28

    Applicant: GEN ELECTRIC

    Inventor： SWANSON LARY WILLIAM ,  ZHOU WEI ,  MOYEDA DAVID KELLY ,  PAYNE ROY

    IPC: F23C99/00 ,  B01D53/56 ,  B01D53/62 ,  B01D53/79 ,  F23J7/00

    Abstract: A method of decreasing a concentration of nitrogen oxides in a combustion gas flowing through a vessel including: generating a flue gas in a combustion zone of the vessel, the flue gas containing nitrogen oxides and carbon monoxide; providing overfire air into a burnout zone of the vessel from a first injector of overfire air to oxidize at least some of the carbon monoxide in the flue gas; injecting a selective reducing agent concurrent with overfire air at a level in the burnout zone downstream of the first injector of overfire air and downstream of the oxidization of the carbon monoxide, and reacting the selective reducing agent with the flue gas to reduce the nitrogen oxides.

    GAS FLOW INJECTOR AND METHOD OF INJECTING GAS INTO A COMBUSTION SYSTEM
    13.
    发明专利
    GAS FLOW INJECTOR AND METHOD OF INJECTING GAS INTO A COMBUSTION SYSTEM 未知

    公开(公告)号：GB2453223A

    公开(公告)日：2009-04-01

    申请号：GB0816923

    申请日：2008-09-16

    Applicant: GEN ELECTRIC

    Inventor： ZHOU WEI ,  MOYEDA DAVID KELLY ,  LIPINSKI WILLIAM T ,  NGUYEN QUANG H ,  SWANSON LARRY WILLIAM

    IPC: F23M9/02 ,  F23L9/02

    Abstract: A gas flow injector 32 has an inner nozzle 34 with a tubular configuration for directing a first gas stream to a location distal to the gas flow injector. The inner nozzle has an outlet end portion 38 and a longitudinal central axis 36. Arranged about the inner nozzle is an outer nozzle 40 having a tubular configuration which may include a throat 48, for directing a second gas stream to a location proximal to the gas flow injector. A diverter 44 is mounted to the outlet end portion of the inner nozzle and extends at least partially into the second gas stream. The diverter has a surface 46 arranged at an acute angle relative to the longitudinal central axis of the inner nozzle to redirect at least a portion of the second gas stream in a direction transverse to the longitudinal central axis. Also disclosed is a method of injecting a gas into a combustion system (10 fig 1) using the gas flow injector. The apparatus and the method permit a gas flow to be injected into a combustion chamber and achieve both near and far field mixing, and the gas flow may be air, and may include a sorbent such as ammonia or urea.

    Combustion system with reduced nitrogen oxide emissions
    16.
    发明专利
    Combustion system with reduced nitrogen oxide emissions 未知

    公开(公告)号：GB2457564A

    公开(公告)日：2009-08-26

    申请号：GB0902240

    申请日：2009-02-12

    Applicant: GEN ELECTRIC

    Inventor： PAYNE ROY ,  SWANSON LARRY WILLIAM ,  MOYEDA DAVID KELLY ,  MARQUEZ ANTONIO

    IPC: F23C6/04

    Abstract: A combustion system 200 having reduced nitrogen oxide emissions is presented. The combustion system includes a combustion zone 220, which includes a burner for converting a fuel, under fuel rich conditions, to a flue gas. An intermediate staged air inlet 232 is situated downstream from the combustion zone, for supplying intermediate staged air to the flue gas and producing fuel lean conditions. A reburn zone 224 is located downstream from the intermediate staged air inlet for receiving the flue gas. Preferably, the combustion zone comprises two or more burners arranged in two or more rows. The intermediate staged air may be supplied as boosted air. Preferably, an overfire air inlet 236 is provided for supplying overfire air to a burnout zone 226 downstream from the reburn zone. The combustion system may include a boiler nose tip 240 through which the flue gas flows. In further aspects, a process for using the combustion system and a method of reducing NOx flowing into the reburn zone of the combustion system are also described.

    17.
    发明专利
    未知

    公开(公告)号：DE102008037582A1

    公开(公告)日：2009-06-04

    申请号：DE102008037582

    申请日：2008-11-24

    Applicant: GEN ELECTRIC

    Inventor： EITENEER BORIS NICKOLAEVICH ,  MARQUEZ ANTONIO ,  MOYEDA DAVID KELLY

    IPC: B01D53/86

    Abstract: A method for reducing the emissions from combustion gases produced during a combustion process includes injecting a hydrocarbon-based reducing agent into the combustion gases to form a combustion gas mixture. The combustion gas mixture including oxides of nitrogen, NOx, is directed through a selective catalyst reduction (SCR) system including a catalyst bed to remove NOx from the combustion gas mixture and to produce an exhaust gas. In one embodiment, the exhaust gases are released from the SCR to the atmosphere.

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