EP2853818A1 - Brûleur destiné à un système de combustion avec un élément de prémélange et élément de refroidissement, système de combustion doté d'un brûleur et utilisation du système de combustion - Google Patents

Brûleur destiné à un système de combustion avec un élément de prémélange et élément de refroidissement, système de combustion doté d'un brûleur et utilisation du système de combustion Download PDF

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Publication number
EP2853818A1
EP2853818A1 EP13186160.1A EP13186160A EP2853818A1 EP 2853818 A1 EP2853818 A1 EP 2853818A1 EP 13186160 A EP13186160 A EP 13186160A EP 2853818 A1 EP2853818 A1 EP 2853818A1
Authority
EP
European Patent Office
Prior art keywords
combustion
burner
cooling
burner body
premixing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13186160.1A
Other languages
German (de)
English (en)
Inventor
Annika Lindholm
Joachim Nordin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to EP13186160.1A priority Critical patent/EP2853818A1/fr
Priority to PCT/EP2014/064412 priority patent/WO2015043786A1/fr
Publication of EP2853818A1 publication Critical patent/EP2853818A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
    • F23R3/283—Attaching or cooling of fuel injecting means including supports for fuel injectors, stems, or lances
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply

Definitions

  • This invention relates to a burner for a combustion system, a combustion system with the burner and a use of the combustion system.
  • the combustion system could be incorporated into a gas turbine which is used to produce electricity by combusting a combustion mixture of gaseous fuel and air (combustion process).
  • Exhaust gas of the combustion process drives a turbine with which electricity is produced.
  • the gaseous fuel is natural gas.
  • the combustion system comprises a compressor for providing compressed air.
  • the compressed air is mixed with the fuel by a premixing element, which is integrated into a burner body of a burner of the combustion turbine resulting in the combustion mixture.
  • the combustion mixture is injected into a combustion chamber of the burner where the combustion process takes place.
  • the operating temperature of the burner body So, on the one hand, it is desirable to reduce the operating temperatures of the burner body. But, the lower the operating temperatures of the burner body and consequently the lower the operating temperatures of the combustion process the lower efficiency of the overall process. So, on the other hand the operating temperature should be as high as possible.
  • the burner comprises at least one burner body with at least one cooling element for cooling the burner body and at least one premixing element for mixing a fluidic combustion component and at least one additional fluidic combustion component for providing the combustion mixture, wherein the cooling element and the premixing element are integrated into the burner body and the cooling of the burner body can be carried out by the fluidic combustion component and/or by the additional fluidic combustion component.
  • the fluidic combustion component and the fluidic additional combustion component are reactants of the combusting (combustion process).
  • the fluidic combustion component and/or the additional fluidic combustion component are selected from the group consisting of fuel and air. Alternative reactants are possible, too.
  • the cooling element and the premixing element form an integrated part of the burner body.
  • these elements and the burner body are made out of the same material or made out of similar materials.
  • the elements and the burner body form a monolithic body.
  • the cooling element can be driven with the aid of the fluidic combustion component and/or with the aid of the additional fluidic combustion component.
  • the cooling element comprises the premixing element.
  • the premixing element comprises additionally a cooling function.
  • the premixing element is developed for cooling the burner body.
  • fuel and/or air fluidic combustion components, fluidic combustion reactants
  • the cooling element is integrated into the burner body.
  • combustion system with at least one such burner is provided as well as use of the combustion system for producing electricity by combusting a combustion mixture.
  • Exhaust gas of the combustion process drives a turbine with which the electricity is produced.
  • fluidic reactive or non reactive components or mixtures of these components can be used.
  • a fluidic combustion component and/or an additional fluidic combustion component with a fluid is used, which is selected from the group consisting of natural gas and hydrogen gas.
  • natural gas and hydrogen gas Preferably mixtures of natural gas and hydrogen gas are possible.
  • hydrogen rich gas can be used (see below).
  • the fuel is a liquid or gaseous.
  • An efficient cooling is possible by the use of a liquid fuel (via evaporation heat). This is advantageous for the case that the cooling element and the mixing element are separated from each other.
  • the burner body comprises at least one combustion mixture injection element for injecting of the combustion mixture into a combustion chamber of a combustion system.
  • the combustion mixture injection element Preferably, besides the cooling element and/or the premixing element the combustion mixture injection element form an integral part of the burner body, too.
  • the combustion mixture injection element is integrated into the burner body.
  • a large cooling surface is possible with a cooling element with a plurality of micro channels.
  • Micro channels can be formed by open pores.
  • a plurality of open pores through which the fluidic combustion component can be led, is advantageous for an efficient mixing process.
  • a combustion mixture injection element with micro channels through which the combustion mixture can be led and injected into the combustion chamber.
  • These micro channels are integrated into a burner wall of the burner body which is adjacent to the combustion chamber.
  • the burner wall of the burner body is fine structured.
  • a burner with such a burner body is called "soft walled" burner.
  • the micro structure can be arbitrary designed with a structure close to or smaller than a quenching distance of a chosen combustion mixture. This inhibits an undesired ignition and burning of the combustion mixture inside the burner body. The possibility for the occurrence of a flashback is reduced. This is especially critical for combustion mixtures with hydrogen or hydrogen rich fuels.
  • Hydrogen rich fuels comprise hydrogen with an amount of more than 5 vol.%. The amount of hydrogen gas on the fuel exceeds 5 vol.%. Preferably, the amount of hydrogen gas is more than 10 vol.
  • the combustion mixture injection element comprises a plurality of open injection element pores for the injection of the combustion mixture into the combustion chamber. Through these pores the combustion mixture is led and injected into the combustion chamber.
  • the open premixing element pores and/or the open injection element pores comprise an average diameter which is selected from the range between 20 ⁇ m to 1000 ⁇ m.
  • the pore diameter is selected from the range between 30 ⁇ m and 300 ⁇ m and more preferable from 50 ⁇ m and 200 ⁇ m.
  • an average pore diameter is about 100 ⁇ m.
  • the premixing element and the combustion mixture injection element, especially the micro structures of the premixing element can be formed by various materials. Preferably these materials are compatible with the material of the burner body.
  • the thermal expansion coefficients should equal or nearly equal.
  • the burner body, the cooling element, the premixing element and the combustion mixture injection element are made out of the same material. Different temperature expansion coefficients don't play any role.
  • Such a material can be an appropriate alloy.
  • the premixing element and/or the combustion injection element can comprise ceramic.
  • One or both elements comprise a ceramic.
  • Ceramic can be made porous. It withstands high temperatures and can have a relatively high thermal conductivity (for an efficient cooling). The ceramic should have a temperature expansion coefficient as the material of the burner body.
  • Subject matter is a burner 1 of a combustion system 2 for combusting a combustion mixture 110.
  • the combustion system 2 is a part of a gas turbine.
  • the combustion mixture comprises a fluidic combustion component with fuel 1100 and an additional fluidic combustion component with air 1101.
  • the burner 1 comprises a burner body 10 with a cooling element 11 for cooling the burner body 10 and a premixing element 12 for mixing fuel 1100 and air 1101 for providing the combustion mixture 110
  • the cooling element 11 is the premixing element 12.
  • the cooling of the burner body 10 can be carried out by the fuel 1100 and/or by the air 1101.
  • the premixing element 12 comprises a plurality of open premixing pores 121.
  • the burner body 10 comprises a combustion mixture injection element 13 for injecting of the combustion mixture 110 into a combustion chamber 20 of a combustion system 2.
  • the combustion injection element 13 comprises a plurality of open injection element pores 131 for the injection of the combustion mixture into the combustion chamber 20.
  • the burner body 10, the cooling element 11, the premixing element 12 and the combustion injection element 13 form a monolithic body.
  • the cooling element 11, the premixing element 12 and the combustion injection element 13 are integral parts of the burner body.
  • An average diameter of the pores of the elements 11, 12 and 13 is about 100 ⁇ m.
  • the mixing of fuel 1100 and air 1101 to the combustion mixture 110 takes place downstream of the porous cooling element 12.
  • open cooling pores 111 of the cooling element 11 act as open premixing pores 121 of the premixing element 12.
  • Fuel 1100 and air 1010 are led trough the pores 111 and 121 and mixed together after that.
  • the combustion system 2 is used for producing electricity by combusting the combustion mixture 110.
  • Exhaust gas of the combustion process drives a (not shown) turbine with which the electricity is produced.
  • the fuel is a hydrogen rich mixture of natural gas and gaseous hydrogen.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
EP13186160.1A 2013-09-26 2013-09-26 Brûleur destiné à un système de combustion avec un élément de prémélange et élément de refroidissement, système de combustion doté d'un brûleur et utilisation du système de combustion Withdrawn EP2853818A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13186160.1A EP2853818A1 (fr) 2013-09-26 2013-09-26 Brûleur destiné à un système de combustion avec un élément de prémélange et élément de refroidissement, système de combustion doté d'un brûleur et utilisation du système de combustion
PCT/EP2014/064412 WO2015043786A1 (fr) 2013-09-26 2014-07-07 Brûleur pour un système de combustion doté d'un élément de prémélange et d'un élément de refroidissement, système de combustion doté du brûleur et utilisation du système de combustion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13186160.1A EP2853818A1 (fr) 2013-09-26 2013-09-26 Brûleur destiné à un système de combustion avec un élément de prémélange et élément de refroidissement, système de combustion doté d'un brûleur et utilisation du système de combustion

Publications (1)

Publication Number Publication Date
EP2853818A1 true EP2853818A1 (fr) 2015-04-01

Family

ID=49237091

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13186160.1A Withdrawn EP2853818A1 (fr) 2013-09-26 2013-09-26 Brûleur destiné à un système de combustion avec un élément de prémélange et élément de refroidissement, système de combustion doté d'un brûleur et utilisation du système de combustion

Country Status (2)

Country Link
EP (1) EP2853818A1 (fr)
WO (1) WO2015043786A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11774093B2 (en) 2020-04-08 2023-10-03 General Electric Company Burner cooling structures
EP4411234A1 (fr) * 2023-02-02 2024-08-07 Pratt & Whitney Canada Corp. Moteur à turbine à gaz à hydrogène avec anneau d'injecteur

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0548908A2 (fr) * 1991-12-24 1993-06-30 Kabushiki Kaisha Toshiba Ensemble à gicleur d'injection de carburant à utiliser dans une chambre de combustion de turbine à gaz
US20110083442A1 (en) * 2009-10-08 2011-04-14 General Electric Company Apparatus and method for cooling nozzles
DE102011056058A1 (de) * 2010-12-06 2012-06-06 General Electric Company Verfahren zum Betreiben einer luftgestuften Diffusionsdüse
US20120180490A1 (en) * 2011-01-14 2012-07-19 Mitsubishi Heavy Industries, Ltd. Fuel nozzle, gas turbine combustor with the same, and gas turbine with the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0548908A2 (fr) * 1991-12-24 1993-06-30 Kabushiki Kaisha Toshiba Ensemble à gicleur d'injection de carburant à utiliser dans une chambre de combustion de turbine à gaz
US20110083442A1 (en) * 2009-10-08 2011-04-14 General Electric Company Apparatus and method for cooling nozzles
DE102011056058A1 (de) * 2010-12-06 2012-06-06 General Electric Company Verfahren zum Betreiben einer luftgestuften Diffusionsdüse
US20120180490A1 (en) * 2011-01-14 2012-07-19 Mitsubishi Heavy Industries, Ltd. Fuel nozzle, gas turbine combustor with the same, and gas turbine with the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11774093B2 (en) 2020-04-08 2023-10-03 General Electric Company Burner cooling structures
EP4411234A1 (fr) * 2023-02-02 2024-08-07 Pratt & Whitney Canada Corp. Moteur à turbine à gaz à hydrogène avec anneau d'injecteur

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Publication number Publication date
WO2015043786A1 (fr) 2015-04-02

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