IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0568119
(2004-08-05)
|
등록번호 |
US-8540508
(2013-09-24)
|
우선권정보 |
EP-03018417 (2003-08-13) |
국제출원번호 |
PCT/EP2004/008786
(2004-08-05)
|
§371/§102 date |
20060213
(20060213)
|
국제공개번호 |
WO2005/019734
(2005-03-03)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- Siemens Aktiengesellschaft
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
12 |
초록
▼
The invention relates to a method for burning a fluid fuel, in which fuel is reacted in a catalytic reaction, whereupon catalytically pre-reacted fuel continues to be burned in a secondary reaction. A swirling component is impressed onto the pre-reacted fuel, allowing the secondary reaction to be ig
The invention relates to a method for burning a fluid fuel, in which fuel is reacted in a catalytic reaction, whereupon catalytically pre-reacted fuel continues to be burned in a secondary reaction. A swirling component is impressed onto the pre-reacted fuel, allowing the secondary reaction to be ignited in a spatially controlled manner, resulting in complete burnout. The invention further relates to a burner for burning a fluid fuel, in which the fuel outlet of a catalytic burner is disposed upstream of the fuel outlet of a primary burner in the direction of flow of the fuel within a flow channel such that the fuel is catalytically reacted. The catalytic burner is provided with a number of catalytically effective elements which are arranged such that a vortex is created in the flow channel. The invention can be applied particularly to combustion chambers of gas turbines.
대표청구항
▼
1. A method of combusting a fuel in a catalytic combustion system, comprising: providing a primary burner having a primary flow channel, the primary flow channel comprises a longitudinal axis and a primary flow channel outlet; andproviding a catalytic burner comprising at least a first catalytically
1. A method of combusting a fuel in a catalytic combustion system, comprising: providing a primary burner having a primary flow channel, the primary flow channel comprises a longitudinal axis and a primary flow channel outlet; andproviding a catalytic burner comprising at least a first catalytically effective element disposed in a first catalytic flow path having a first catalytic flow path outlet, the first catalytic flow path predeterminedly arranged to face into the primary flow channel in a approximately circumference direction of the primary flow channel,the first catalytic flow path in fluid communication with the primary flow channel and disposed upstream of the primary flow channel outlet;pre-reacting fuel supplied by a burner fuel supply in a catalytic pre-reaction by exposing the fuel to the at least first catalytic element;directing the pre-reacted fuel from the at least first catalytic flow path onto an inner surface of an outer wall that defines an outer perimeter of the primary flow channel such that inner surface of the primary flow channel outer wall is effective to impart a circumferential motion to the pre-reacted fuel in the primary flow channel, causing the pre-reacted fuel to flow in a helical flow path in the primary flow channel; andcontinuing to burn the pre-reacted fuel in a secondary reaction located in downstream of the pre-reaction and the primary flow channel outlet. 2. The method as claimed in claim 1, wherein the secondary reaction occurs in a vortex downstream of the primary flow channel outlet in a combustion space. 3. The method as claimed in claim 2, wherein the length of the primary flow channel is determined based on a dwell time of the pre-reacted fuel. 4. The method as claimed in claim 3, wherein the primary burner and combustion space are arranged next to each other in sequence along the primary flow channel longitudinal axis. 5. The method as claimed in claim 1, wherein the secondary reaction is a homogeneous non-catalytic reaction. 6. The method as claimed in claim 5, wherein the fuel is completely burned in the secondary reaction. 7. The method as claimed in claim 6, wherein the fuel is a fuel gas or a fuel oil or a mixture of fuel oil and air. 8. The method as claimed in claim 7, wherein the fuel is a fuel gas during a first operating mode of the catalytic combustion system and is a fuel oil or a mixture of fuel oil and air during a second operating mode catalytic combustion system. 9. A burner for burning a fuel, comprising: a primary burner comprising a primary flow channel, wherein the primary flow channel comprises a longitudinal axis and a primary flow channel outlet; anda catalytic burner comprising a catalytically effective element disposed in a catalytic burner flow channel with a catalytic burner flow channel outlet, the catalytic burner flow channel predeterminedly arranged to face into the primary flow channel in a approximately circumference direction of the primary flow channel, the catalytic burner flow channel arranged to direct pre-reacted fuel onto an inner surface of an outer wall that defines an outer perimeter of the primary flow channel via the catalytic burner flow channel outlet such that the inner surface of a-the primary flow channel outer wall imparts circumferential motion to the pre-reacted fuel effective to create a vortex in the primary flow channel, wherein the fuel is catalytically pre-reacted via exposure to the catalytically effective element. 10. The burner as claimed in claim 9, wherein the fuel is a fuel gas during a first operating mode of the catalytic burner and is a fuel oil or a mixture of fuel oil and air during a second operating mode of the catalytic burner. 11. The burner as claimed in claim 9, wherein the burner comprises a plurality of primary flow channels each sharing a common longitudinal axis, a catalytic burner for each primary flow channel, at least one catalytically effective element per catalytic burner, and a respective inner surface of each primary flow channel respective outer wall imparts circumferential motion to the pre-reacted fuel effective to create a vortex about the common longitudinal axis. 12. The burner as claimed in claim 9, wherein the catalytically effective element is a honeycomb catalytic converter. 13. The burner as claimed in claim 12, wherein the honeycomb catalytic converter basic component is selected from the group consisting of titanium dioxide, silicon oxide and zirconium oxide. 14. The burner as claimed in claim 13, wherein the honeycomb catalytic converter catalytically active component is a noble metal or metal oxide which has an oxidizing effect on the fluid fuel. 15. The burner as claimed in claim 11, wherein the catalytically effective elements that pre-react fuel directed into a respective primary flow channel are arranged in a plane perpendicular to the common longitudinal axis. 16. The burner as claimed in claim 9, wherein the length of the primary flow channel is determined based on a dwell time of the pre-reacted fuel. 17. The burner as claimed in claim 16, wherein the primary burner and a combustion space are arranged next to each other in sequence along the common longitudinal axis. 18. A combustion chamber for a gas turbine engine, comprising: a combustion chamber housing having an inward side and an outward side;a combustion chamber wall formed on the inward side of the combustion chamber;a plurality of heat resistant elements affixed to an interior of the combustion chamber wall that define a combustion air flow channel;a primary burner having a first primary flow channel comprising a first primary outlet and a second annular flow channel concentric with and surrounding the first primary flow channel and comprising a second annular flow channel outlet, wherein the first and second flow channels comprise a common longitudinal axis and are separated by a common annular wall;a first catalytic burner comprising: at least a first catalytic burner flow channel having a first catalytic burner flow channel outlet; a first catalytically effective element disposed in the first catalytic burner flow channel; the first catalytic burner flow channel predeterminedly arranged to face into the primary flow channel in a approximately circumference direction of the primary flow channel; the first catalytic flow channel outlet arranged to direct a flow of a first fuel onto an inner surface of the common annular wall that defines an outer perimeter of the primary flow channel, such that the inner surface of the common annular outer wall is effective to impart circumferential motion to the first flow and create a vortex in the primary flow channel about the common longitudinal axis, wherein the first fuel is catalytically pre-reacted by exposure to the first catalytically effective element; anda second catalytic burner comprising: at least a second catalytic burner flow channel with a second catalytic burner flow channel outlet; a second catalytically effective element disposed in the second catalytic burner flow channel; the second catalytic burner flow channel predeterminedly arranged to face into the second annular flow channel in an approximately circumference direction of the annular flow channel and the a second catalytic burner flow channel and the second catalytic burner flow channel outlet arranged to direct a flow of a second fuel onto an inner surface of an outer wall that defines an outer perimeter of the second annular flow channel, such that the inner surface of the a second annular flow channel outer wall is effective to impart circumferential motion to the second flow and create a vortex in the second annular flow channel about the common longitudinal axis, wherein the second fuel is catalytically pre-reacted by exposure to the second catalytically effective element, andwherein subsequently a homogeneous non-catalytic secondary reaction is ignited downstream of the primary burner fuel outlet. 19. The combustion chamber as claimed in claim 18, wherein the fuel is a fuel gas or a fuel oil or a mixture of fuel oil and air.
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