Method and apparatus for advanced staged combustion utilizing forced internal recirculation
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F23M-003/00
F23C-005/00
출원번호
US-0946444
(2001-09-05)
발명자
/ 주소
Rabovitser, Iosif K.
Knight, Richard A.
Cygan, David F.
Nester, Serguei
Abbasi, Hamid A.
출원인 / 주소
Gas Technology Institute
대리인 / 주소
Fejer, Mark E.
인용정보
피인용 횟수 :
17인용 특허 :
14
초록▼
A method and apparatus for combustion of a fuel in which a first-stage fuel and a first-stage oxidant are introduced into a combustion chamber and ignited, forming a primary combustion zone. At least about 5% of the total heat output produced by combustion of the first-stage fuel and the first-stage
A method and apparatus for combustion of a fuel in which a first-stage fuel and a first-stage oxidant are introduced into a combustion chamber and ignited, forming a primary combustion zone. At least about 5% of the total heat output produced by combustion of the first-stage fuel and the first-stage oxidant is removed from the primary combustion zone, forming cooled first-stage combustion products. A portion of the cooled first-stage combustion products from a downstream region of the primary combustion zone is recirculated to an upstream region of primary combustion zone. A second-stage fuel is introduced into the combustion chamber downstream of the primary combustion zone and ignited, forming a secondary combustion zone. At least about 5% of the heat from the secondary combustion zone is removed. In accordance with one embodiment, a third-stage oxidant is introduced into the combustion chamber downstream of the secondary combustion zone, forming a tertiary combustion zone.
대표청구항▼
A method and apparatus for combustion of a fuel in which a first-stage fuel and a first-stage oxidant are introduced into a combustion chamber and ignited, forming a primary combustion zone. At least about 5% of the total heat output produced by combustion of the first-stage fuel and the first-stage
A method and apparatus for combustion of a fuel in which a first-stage fuel and a first-stage oxidant are introduced into a combustion chamber and ignited, forming a primary combustion zone. At least about 5% of the total heat output produced by combustion of the first-stage fuel and the first-stage oxidant is removed from the primary combustion zone, forming cooled first-stage combustion products. A portion of the cooled first-stage combustion products from a downstream region of the primary combustion zone is recirculated to an upstream region of primary combustion zone. A second-stage fuel is introduced into the combustion chamber downstream of the primary combustion zone and ignited, forming a secondary combustion zone. At least about 5% of the heat from the secondary combustion zone is removed. In accordance with one embodiment, a third-stage oxidant is introduced into the combustion chamber downstream of the secondary combustion zone, forming a tertiary combustion zone. rmediate die (24) positioned within the cavity of the main die and spaced from the sidewalls thereof to receive said inclusion ingredient such as fudge and insert said inclusion ingredient into the primary ingredient as said primary ingredient flows along the cavity of the main die along and about said intermediate die, said inclusion ingredient being inserted into said primary ingredient at an insertion location (7') adjacent the exit (12') of the second end portion (34) of the main die (12), at least a second supply source (14) to feed said inclusion ingredient into the intermediate die, said intermediate die having at least two, spaced-apart, top sections (52) and two, spaced-apart, middle sections (54), said intermediate die further including a common bottom section (62), said top sections receiving said inclusion ingredient from said second supply source and respectively extending from adjacent the first end portion of the main die to respective first locations (56) upstream of the insertion location (7'), said respective middle sections (54) extending from said respective first locations (56) to respective second locations (64) upstream of said insertion location (7'), said common bottom section (62) extending from said respective second locations (64) to said insertion location (7'), each of said top sections (52) of the intermediate die (24) having a first, inner, cross-sectional shape and said common bottom section (62) having an inner, cross-sectional shape different from said first shape, each of said middle sections (54) having an inner, cross-sectional shape gradually and progressively changing from substantially matching said first shape of said top section (52) to substantially matching at least a portion of the shape of the common bottom section (62). 2. The apparatus of claim 1 wherein each portion of the shape of the common bottom section is substantially half of the entire shape thereof wherein said two, top sections and said two, middle sections together direct the inclusion ingredient therein into the entire, cross-sectional shape of the bottom section. 3. The apparatus of claim 1 wherein said bottom section of the intermediate die has substantially the same cross-sectional shape from said second location to said insertion location. 4. The apparatus of claim 1 wherein the cross-sectional shape of each of the top sections is substantially round and the cross-sectional shape of the common bottom section is substantially narrow and elongated. 5. The apparatus of claim 1 wherein each of said middle sections has at least a first pair of sidewalls gradually and progressively extending away from each other from the first location to the second location. 6. The apparatus of claim 5 wherein said first pair of sidewalls of each of said middle sections extend away from a common, central axis at an angle between about 5 degrees and 20 degrees. 7. The apparatus of claim 6 wherein said angle is about 10 degrees. 8. The apparatus of claim 5 wherein each of said middle sections has a second pair of sidewalls joined to said first pair, each sidewall of said second pair having a generally fan shape. 9. The apparatus of claim 5 wherein each of said middle sections has a second pair of sidewalls joined to said first pair, each sidewall of said second pair having a generally truncated triangular shape. 10. The apparatus of claim 5 wherein each of said middle sections has a second pair of sidewalls joined to said first pair, the sidewalls of said second pair gradually and progressively extending toward each other from said first location to the second location. 11. The apparatus of claim 10 wherein said second pair of sidewalls extend toward each other at an angle to said common, central axis of about 5 degrees. 12. The apparatus of claim 5 wherein said second supply source feeds the inclusion ingredient into said intermediate die at a temperature higher than the temperature the primary ingredient is being fed into said ma
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이 특허에 인용된 특허 (14)
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Khinkis Mark J. (Morton Grove IL) Abbasi ; Hamid A. (Darien IL) Cygan David F. (Villa Park IL), Method for two-stage combustion utilizing forced internal recirculation.
Martin Michael J. (Broken Arrow OK) Gibson William C. (Tulsa OK) Massey Lee R. (Tulsa OK), Nitrogen oxide control using internally recirculated flue gas.
DiCintio, Richard Martin; Melton, Patrick Benedict; Stoia, Lucas John, Assemblies and apparatus related to integrating late lean injection into combustion turbine engines.
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