[특허]Catalytically operating burner

Alstom Technology LTD

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특허 상세정보

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Catalytically operating burner

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F23D-021/00
미국특허분류(USC)	431/007; 431/009; 431/350; 060/723
출원번호	US-0843836 (2001-04-30)
우선권정보	DE-0019035 (2001-04-18)
발명자 / 주소	Griffin, Timothy Jansohn, Peter Schmidt, Verena Winkler, Dieter
출원인 / 주소	Alstom Technology LTD
대리인 / 주소	Burns, Doane, Swecker &
인용정보	피인용 횟수 : 2 인용 특허 : 55

초록
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A catalytically operating burner with a catalyzer structure (4), useful in particular for a gas turbine system, has a heat-resistant carrier material (10) that forms the walls of several adjoining channels (13). The channels (13) pervade the catalyzer structure (4) in longitudinal direction and permit that a gaseous reaction mixture flows through the catalyzer structure (4). The walls are coated at least in part with a catalyst. In order to improve the catalytic conversion within the catalyzer structure (4), communicating openings (14) are constructed in...

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1. A catalytically operating burner mounted in a gas turbine system, the burner comprising:a fuel injection device that injects fuel into a supplied gas stream that contains an oxidant; a catalyzer structure that is arranged downstream from the fuel injection device, and through which the gas stream with injected fuel can flow, whereby a catalyst that initiates a combustion reaction of the gas stream with injected fuel is provided inside the catalyzer structure, the catalyzer structure is divided into (i) an inlet zone including an inlet end of the catalyzer structure and which is catalytically inactive or inert, (ii) an outlet zone including an outlet end of the catalyzer structure and which is catalytically inactive or inert, and (iii) an intermediate zone which is catalytically active and located between the inlet zone and the outlet zone along a flow direction; a stabilization zone that is arranged downstream from the catalyzer structure, and which changes into a final combustion zone in which the actual combustion reaction of the gas stream with injected fuel or a homogenous gas phase reaction takes place, wherein the hot combustion gases generated in the final combustion zone by the homogenous gas phase reaction are fed to a downstream turbine of the gas turbine system; a heat-resistant carrier material that extends continuously from the inlet end to the outlet end of the catalyzer structure and that forms the walls of several adjoining channels that pervade the catalyzer structure in a longitudinal direction and permit the gas stream with injected fuel to flow through the catalyzer structure; the walls being coated with the catalyst in such a way that at least some of the channels have at least one catalytically active zone and at least two catalytically inactive or inert zones in the flow direction; communicating openings being constructed in the walls, through which the adjoining channels communicate with each other. 2. A burner as claimed in claim 1, further comprising flow guidance means for redirecting at least part of the flow in one channel into an adjoining channel that communicates with the one channel via the communicating openings, the flow guidance means being associated with at least one of the communicating openings.3. A burner as claimed in claim 1, further comprising a turbulator associated with at least one of the communicating openings.4. A burner as claimed in claim 2, wherein the flow guidance means are constructed as a turbulator.5. A burner as claimed in claim 1, wherein the channels form at least in part a winding flow path through the catalyzer structure.6. A burner as claimed in claim 1, wherein the walls are coated with the catalyst in such a way that at least some of the channels have several active zones with differently designed catalytic activities in the flow direction.7. A burner as claimed in claim 1, wherein at least part of the carrier material coated with the catalyst comprises a porous material.8. A burner as claimed in claim 1, wherein at least part of the carrier material coated with the catalyst comprises a woven fiber material.9. A burner as claimed in claim 1, wherein at least part of the carrier material coated with the catalyst comprises a metal foil.10. A burner as claimed in claim 1, further comprising turbulators in the channels, the turbulators being distributed in the channels along the catalyzer structure so that the catalyzer structure is provided in the flow direction with at least one zone equipped with the turbulators as well as with a turbulators-free zone.11. A burner as claimed in claim 10, wherein one of the at least one zones equipped with the turbulators is the outlet zone of the catalyzer structure.12. A burner as claimed in claim 10, wherein one of the at least one zones equipped with the turbulators is the inlet zone of the catalyzer structure.13. A burner as claimed in claim 10, wherein the inlet zone and the outlet zone of the catalyzer structure are equipped with turbulators.14. A burner as claimed in claim 10, wherein the inlet zone of the catalyzer structure is equipped with turbulators;a turbulators-free zone is constructed catalytically active in an area between the inlet end and the outlet end of the catalyzer structure; and the outlet zone of the catalyzer structure is equipped with turbulators. 15. A burner as claimed in claim 1, wherein the carrier material comprises at least several layers, each layer being formed of a material web that has been at least one of folded and corrugated in zigzag or triangular or rectangular shape, the apex lines or apex surfaces of the folds, the waves, or both, in material webs that adjoin each other transversely to the flow direction are oriented differently, such that adjoining material webs rest against each other at the intersecting apex lines or apex surfaces and form channels between them.16. A burner as claimed in claim 15, wherein the apex lines or apex surfaces are oriented at an angle to the longitudinal direction of the catalyzer structure.17. A burner as claimed in claim 1, wherein the carrier material comprises a material web folded several times, wherein the apex lines or apex surfaces of the folds extend approximately in the longitudinal direction of the catalyzer structure, wherein planar wall sections are formed between consecutive apex lines or apex surfaces, wherein adjoining planar wall sections extend parallel to each other, and wherein the channels are formed between the adjoining wall sections.18. A burner as claimed in claim 1, wherein flow guidance means, turbulators, or both, in the walls are formed by triangular wings, wherein two triangle sides of the wing are cut free and wherein the wing is bent on the third triangle side in such a way that the wing projects into one of the channels, wherein the triangular openings created hereby in the walls form the communicating openings.19. A burner as claimed in claim 18, wherein the bent triangle side of the wing extends approximately transversely to the extension direction of the apex lines or apex surfaces of the material web, and that the triangle tip of the wing is pointed upstream.20. A burner as claimed in claim 1, wherein at least one of the channels is provided along the catalyzer structure at at least one point with a guide vane structure that is oriented transversely to the flow direction and that forces a stream flowing through it to rotate around an axis extending parallel to the flow direction.21. A burner as claimed in claim 1, wherein the intermediate zone is divided into a plurality of partial zones.22. A burner as claimed in claim 21, wherein one of the partial zones is catalytically inactive or inert.23. A gas turbine system, comprising:a catalytically operating burner as claimed in claim 1; and a turbine downstream from the burner. 24. A process of using a catalyzer structure, comprising the steps of:providing a catalyzer structure which is divided into (i) an inlet zone including an inlet end of the catalyzer structure and which is catalytically inactive or inert, (ii) an outlet zone including an outlet end of the catalyzer structure and which is catalytically inactive or inert, and (iii) an intermediate zone which is catalytically active and located between the inlet zone and the outlet zone along a flow direction, the catalyzer structure including a heat-resistant carrier material that extends continuously from the inlet end to the outlet end of the catalyzer structure and that forms the walls of several adjoining channels that pervade the catalyzer structure in the longitudinal direction of the catalyzer structure and enable a gas stream with injected fuel to flow through the catalyzer structure, wherein the walls are coated with a catalyst in such a way that at least some of the channels have at least one catalytically active zone and at least two catalytically inactive or inert zones in the flow direction and wherein between the inlet end and the outlet end of the catalyzer structure communicating openings are constructed in the walls, through which the adjoining channels are communicating with each other, in a catalytically operating burner; and flowing the gas stream with injected fuel through the catalyzer structure whereby the catalyst initiates a combustion reaction of the gas stream with injected fuel inside the catalyzer structure; a stabilization zone being arranged downstream from the catalyzer structure, and which changes into a final combustion zone in which the actual combustion reaction of the gas stream with injected fuel or a homogenous gas phase reaction takes place, wherein the hot combustion gases generated in the final combustion zone by the homogenous gas phase reaction are fed to a downstream turbine of the gas turbine system. 25. A process as claimed in claim 24, wherein the intermediate zone is divided into a plurality of partial zones.26. A process as claimed in claim 25, wherein one of the partial zones is catalytically inactive or inert.

이 특허에 인용된 특허 (55)

이 특허를 인용한 특허 피인용횟수: 2

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Catalytically operating burner

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Catalytically operating burner

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