Reformed multi-fuel premixed low emission combustor and related method
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02C-006/18
F02C-001/00
F02C-007/22
F02C-003/20
F23R-003/28
F02C-009/00
F02C-007/00
F02C-003/30
출원번호
US-0010828
(2011-01-21)
등록번호
US-8931283
(2015-01-13)
발명자
/ 주소
Khan, Abdul Rafey
Karim, Hasan
Berry, Jonathan Dwight
출원인 / 주소
General Electric Company
대리인 / 주소
Nixon & Vanderhye P.C.
인용정보
피인용 횟수 :
0인용 특허 :
13
초록▼
A reformer for use in a gas turbine engine specially configured to treat a supplemental fuel feed to the combustor that includes a reformer core containing a catalyst composition and an inlet flow channel for transporting the reformer fuel mixture, air and steam (either saturated or superheated) int
A reformer for use in a gas turbine engine specially configured to treat a supplemental fuel feed to the combustor that includes a reformer core containing a catalyst composition and an inlet flow channel for transporting the reformer fuel mixture, air and steam (either saturated or superheated) into a reformer core. An outlet flow channel transports the resulting reformate stream containing reformed and thermally cracked hydrocarbons and substantial amounts of hydrogen out of the reformer core for later combination with the main combustor feed. Because the catalytic partial oxidation reaction in the reformer is highly exothermic, the additional heat is transferred (and thermally integrated) using one or more heat exchange units for a first and/or second auxiliary gas turbine fuel stream that undergo thermal cracking and vaporization before combining with the reformate. The combined, hydrogen-enriched feed significantly improves combustor performance.
대표청구항▼
1. A reformer for a gas turbine engine configured to treat a fuel mixture flowing to a gas turbine engine combustor, the reformer comprising: a reformer core assembly disposed inside said reformer and said reformer core assembly containing a catalyst and a plurality of flow passages;an inlet flow ch
1. A reformer for a gas turbine engine configured to treat a fuel mixture flowing to a gas turbine engine combustor, the reformer comprising: a reformer core assembly disposed inside said reformer and said reformer core assembly containing a catalyst and a plurality of flow passages;an inlet flow channel at an inlet to the reformer core assembly and configured to transport a reformer fuel mixture and oxygen-containing stream into said reformer core assembly such that the reformer fuel mixture and oxygen-containing stream enters the flow passages and interacts with the catalyst;a reformulate channel at an outlet of the reformer core assembly and configured to receive a reformate product stream containing reformed hydrocarbons and free hydrogen discharged from said reformer core assembly, wherein the reformulate channel is within the reformer and includes an annular channel around a perimeter of the reformer core assembly;a gas turbine fuel feed channel including an outlet coupled to the reformate channel and configured to discharge the gas turbine fuel feed into the reformate product stream flowing through the reformate channel, wherein the gas turbine fuel feed channel is separated by an annular wall around the annular channel; andthe annular wall is configured as a heat exchanger sized to heat and thermally crack said gas turbine fuel feed in the annular channel of the reformulate channel using heat generated by an exothermic reaction of said reformer fuel mixture with said catalyst. 2. A reformer for a gas turbine engine according to claim 1, wherein said fuel mixture comprises one or more of a gaseous fuel, liquid hydrocarbon fuel, a diluent stream, carbon dioxide and nitrogen. 3. A reformer for a gas turbine engine according to claim 1, wherein said catalyst is capable of reforming said reformer fuel mixture through said exothermic reaction to produce free hydrogen. 4. A reformer for a gas turbine engine according to claim 1, wherein said reformate product stream serves as a carrier fluid with sufficient heat value to vaporize residual liquid fuel components as part of a combined feed to said gas turbine engine. 5. A gas turbine engine system using a hydrogen-enriched and reformed fuel, comprising: a compressor;one or more combustors connected to a rotating shaft and configured to transport hot gasses to said gas turbine engine;a primary fuel source for said combustors, wherein the primary fuel source provides a reformer fuel mixture;a fuel conduit coupling the primary fuel source to the combustors;a reformer including a housing having an inlet flow channel coupled to the fuel conduit to receive the reformer fuel mixture from the primary fuel source and an outlet flow channel coupled to the fuel conduit to discharge a fuel stream to said one or more combustors, said reformer further including a reformer core within the housing and including a catalyst having an inlet open to the inlet flow channel and an outlet open to the outlet flow channel;the inlet flow channel configured to transport the reformer fuel mixture and an oxygen-containing stream to an inlet to the reformer core;the outlet flow channel configured to receive from the reformer core assembly a reformate product stream containing reformed hydrocarbons and free hydrogen from said reformer core, wherein the outlet flow channel includes an annular channel around a perimeter of the reformer core;a gas turbine fuel feed channel having an outlet open to the outlet flow channel and configured to distributed a gas turbine fuel feed into the reformate product stream flowing through the outlet flow channel, wherein the gas turbine fuel feed channel is separated by an annular wall around the annular channel; andthe annular wall configured as a heat exchange unit sized to transfer heat generated by said catalyst composition to said gas turbine fuel feed in the annular channel of the outlet flow channel. 6. A gas turbine engine system according to claim 5, wherein said reformer further comprises one or more additional gas turbine fuel feeds upstream of said combustor, and the one or more additional gas turbine fuel feeds receive fuel from an auxiliary gas turbine fuel feed. 7. A gas turbine engine system according to claim 6, wherein said auxiliary gas turbine fuel feed comprises one or more of a gaseous fuel, liquid hydrocarbon fuel, a diluent stream, carbon dioxide, nitrogen and water. 8. A gas turbine engine system according to claim 5, wherein said reformer further comprises heat exchanger sized to thermally crack and vaporize said gas turbine fuel feed using heat generated by the reaction of said reformer fuel mixture with said catalyst composition. 9. A gas turbine engine system according to claim 5, wherein said reformer fuel mixture comprises a gaseous fuel, liquid hydrocarbon fuel, a diluent stream, carbon dioxide, nitrogen and steam. 10. A gas turbine engine system according to claim 5, wherein said catalyst bed comprises a catalyst capable of reforming said reformer fuel mixture through an exothermic CPOX catalytic reaction and producing free hydrogen. 11. A method for reforming a hydrocarbon fuel for a gas turbine engine, comprising the steps of: feeding a reformer fuel comprising a mixture of hydrocarbon gases, oxygen-containing stream to a reformer core containing a catalyst;passing said mixture of hydrocarbon gases and oxygen-containing stream through said catalyst to generate a reformate product stream including free hydrogen and heat resulting from an exothermic reaction;discharging the heated reformate product stream containing said free hydrogen from said reformer core into a reformulate channel;feeding a gas turbine fuel into an annular channel extending around a perimeter of the reformer core, wherein an annular wall separates the annular channel from the reformer core;transferring a portion of the heat generated during said exothermic reaction to heat the annular wall and transferring heat from the heated annular wall to heat the gas turbine fuel flowing through the annular channel; andcombining said reformate product stream and said heated gas turbine fuel in the reformulate channel. 12. The method according to claim 11, wherein said reformer fuel comprises a mixture of gaseous fuel, an oxygen-containing stream and steam.
Harrow Geoffrey A. (Wirral EN) Mills Walter D. (Mold EN) Wilson John L. (East Kilbride ; Glasgow SC) Finlay Ian C. (Newton Mearns ; Glasgow SC), Liquid fuel vaporizing device for internal combustion engines.
Clawson Lawrence G. ; Mitchell William L. ; Bentley Jeffrey M. ; Thijssen Johannes H. J., Method for converting hydrocarbon fuel into hydrogen gas and carbon dioxide.
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