EP1646826A1 - Bruleur a gaz - Google Patents

Bruleur a gaz

Info

Publication number
EP1646826A1
EP1646826A1 EP04740709A EP04740709A EP1646826A1 EP 1646826 A1 EP1646826 A1 EP 1646826A1 EP 04740709 A EP04740709 A EP 04740709A EP 04740709 A EP04740709 A EP 04740709A EP 1646826 A1 EP1646826 A1 EP 1646826A1
Authority
EP
European Patent Office
Prior art keywords
burner
gas supply
burner according
supply channels
flow
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Withdrawn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
EP04740709A
Other languages
German (de)
English (en)
Inventor
Hanno Tautz
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.)
Linde GmbH
Original Assignee
Linde GmbH
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 Linde GmbH filed Critical Linde GmbH
Publication of EP1646826A1 publication Critical patent/EP1646826A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/70—Baffles or like flow-disturbing devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F23D14/24—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other at least one of the fluids being submitted to a swirling motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/76—Protecting flame and burner parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/78—Cooling burner parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2212/00—Burner material specifications
    • F23D2212/20—Burner material specifications metallic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/00018—Means for protecting parts of the burner, e.g. ceramic lining outside of the flame tube
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/14—Special features of gas burners
    • F23D2900/14241—Post-mixing with swirling means

Definitions

  • the invention relates to a burner with a burner head and gas supply channels arranged in the burner head.
  • Such burners are used, for example, when burning a fuel gas with an oxygen-containing gas in externally mixing burners, ie. H. in burners in which the fuel gas and the oxygen-containing gas are fed separately into a mixing zone and ignited there.
  • the burners are usually cooled by the intake air. If technically pure oxygen or oxygen-enriched air is used for combustion, cooling is usually carried out with cooling water.
  • the burner generally has a cooling channel on its end face and can be supplied with cooling water via an externally welded cooling water coil.
  • EP 0 868 394 B1 also describes a gas-cooled burner to which a ring made of ceramic or precious metal is fixed in order to protect the burner head from excessive temperatures.
  • the mixing zone is usually designed as a gas phase reactor, it being possible to achieve a reactor temperature of 1300 to 1500 ° C. and a flame temperature of more than 2000 ° C. generated with oxygen.
  • Water-cooled burners have the disadvantage that high temperature gradients between the inside and outside of the water-cooled zone can cause strong temperature tensions in the material, which can result in cracking and leakage.
  • temperature zones are formed in which a form of corrosion called "metal dusting" occurs, so that the burner material is removed and thus destroyed.
  • the application of a ceramic ring to the burner head is also associated with risks in gas-cooled burners because of the different Thermal expansion of the materials can cause the ring to flake off and flow separations to form on the thicker edge, which can cause the burner head to burn off.
  • the object of the present invention is therefore to provide a burner which is corrosion-resistant even at high temperatures.
  • the burner head consists of a material containing aluminum, at least in the area of the outlet ends of the gas supply channels.
  • Steel is expediently used as the base material, which is coated with aluminum or an aluminum compound.
  • the material, in particular steel can also contain aluminum as an alloy element.
  • the aluminum content of the material used provides protection against "metal dusting" and offers sufficient heat resistance.
  • a material made of an oxide dispersion strengthened superalloy a so-called ODS material, is used.
  • superalloys are metallic
  • Oxide dispersion hardened superalloys contain finely divided hardening particles, whereby high mechanical short and long-term strengths can be achieved up to temperatures of 1300 ° C.
  • aluminum By using aluminum as an alloying element
  • Superalloys are also guaranteed corrosion resistance even at high temperatures by forming a self-healing aluminum oxide protective layer.
  • a further development of the concept of the invention provides that the heat resistance of the burner is further increased by using the aluminum-containing material in connection with a special burner construction, which always ensures that the burner is adequately cooled by the gas flow alone.
  • a wing stabilizing the gas flow is provided as an essential element of such a burner construction in at least one of the gas supply channels.
  • the wing can be formed by a profiled body or by a flat body that is inclined against the flow, for example a baffle.
  • the flow can be influenced in a defined manner by using such a wing in at least one of the gas supply channels.
  • the flow velocity is increased in the channel between the wing and the wall of the gas feed line, and the flow is thus stabilized.
  • the detachment of flow threads and the formation of vortices when the gas streams meet immediately in front of the burner head are prevented.
  • the wing is preferably set back with respect to the outlet end of the gas supply channel. This has the advantage that the wing is located completely within the gas supply channel and is therefore only washed around by the gas flowing through this gas supply channel during operation. Due to the gas stream flowing around, the wing is cooled, in particular at its downstream end, and the hot reaction mixture of the two gas streams is prevented from coming into contact with the wing and damaging it.
  • Different flow rates are preferably provided for the two gas flows involved, since this promotes the mixing of the two gas flows.
  • the effect of the wing is particularly effective when the gas flow is stabilized at the lower speed by the wing. It has proven to be advantageous if the flow rate of the gases differ by at least 10%, preferably at least 20%.
  • the absolute flow velocities are preferably between 10 and 200 m / s and particularly preferably between 20 and 00 m / s.
  • the gas supply channels are advantageously made coaxial with one another. arranged gas supply pipes formed. At least one fuel gas supply pipe and one oxidant supply pipe are provided.
  • the fuel gas supply pipe preferably forms the outer pipe, which Surrounds oxidant feed pipe.
  • the absolute speed in the inner tube should be between 10 and 200 m / s and particularly preferably between 20 and 100 m / s, while the speed in the outer tube should be between 7 and 180 m / s and preferably between 16 and 80 m / s ,
  • the ratio of the velocities of oxidant flow and fuel flow should be in the range 0.8 to 1.8 and particularly preferably in the range 1.0 to 1.3.
  • At least one gas feed channel can be provided with means for generating a swirl flow. These means preferably have flow channels that are inclined tangentially to the direction of flow.
  • the means for generating a swirl flow can be designed to be adjustable in order to produce swirl flows of different strengths.
  • the burner can have means for cooling by a steam flow in the outside area.
  • the burner to the combustion chamber side z. B. be shielded by a diffuser or cylindrical tubular insulation against heat radiation.
  • the burner Due to the high temperature strength of the burner achieved with the invention, a cooling water circuit can be saved, which also reduces the susceptibility to accidents.
  • the burner is protected against the form of corrosion of "metal dusting" by the aluminum-containing materials, so that the service life of the burner increases significantly.
  • the special high-temperature resistance ensures that the burner does not melt even in the event of a fault without gas flow as long as the reactor temperatures are below 1400 ° C.
  • the burner according to the invention is particularly suitable for the chemical conversion of gaseous starting materials into a reaction product at very high levels
  • the figure shows a section through a burner head.
  • Two concentric gas supply pipes are arranged in the burner head.
  • the fuel is metered in the outer annular space 1 and the oxidant in the inner tube 2.
  • they are swirled by means of swirl bodies 3 and 4. So that the fuel gas flow is well in the outlet area 6, a slat 7 is attached to the inner ear, this ensures that sufficient cooling of the burner head, in particular in the outlet areas 5 and 6 of the gas supply pipes, is ensured solely by the gas flow.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)

Abstract

L'invention concerne un brûleur comportant une tête de brûleur et des canaux d'arrivée de gaz disposés dans la tête de brûleur. Pour améliorer la résistance du brûleur à la chaleur et à la corrosion, la tête de brûleur est composée d'un matériau contenant de l'aluminium au moins dans la zone des extrémités de sortie (5, 6) des canaux d'arrivée de gaz (1, 2).
EP04740709A 2003-07-18 2004-07-06 Bruleur a gaz Withdrawn EP1646826A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10332860A DE10332860A1 (de) 2003-07-18 2003-07-18 Gasbrenner
PCT/EP2004/007388 WO2005017411A1 (fr) 2003-07-18 2004-07-06 Bruleur a gaz

Publications (1)

Publication Number Publication Date
EP1646826A1 true EP1646826A1 (fr) 2006-04-19

Family

ID=34041957

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04740709A Withdrawn EP1646826A1 (fr) 2003-07-18 2004-07-06 Bruleur a gaz

Country Status (8)

Country Link
US (1) US20070134608A1 (fr)
EP (1) EP1646826A1 (fr)
CA (1) CA2532716A1 (fr)
DE (1) DE10332860A1 (fr)
NO (1) NO20060797L (fr)
RU (1) RU2006104875A (fr)
WO (1) WO2005017411A1 (fr)
ZA (1) ZA200601381B (fr)

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DE102005029317A1 (de) * 2005-06-22 2006-12-28 Linde Ag Vorrichtung zum Einleiten von Stoffen in einen Reaktionsraum
DE102007025051B4 (de) * 2007-05-29 2011-06-01 Hitachi Power Europe Gmbh Hüttengasbrenner
US8231730B2 (en) * 2008-06-09 2012-07-31 Guardian Industries Corp. Combustion deposition burner and/or related methods
DE102008027882A1 (de) 2008-06-11 2009-12-17 Linde Ag Hochtemperaturreformierung
DE102009010274B4 (de) 2009-02-24 2014-06-18 Eisenmann Ag Brenner für eine thermische Nachverbrennungsvorrichtung
DE102010006868A1 (de) * 2010-02-04 2011-08-04 Linde Aktiengesellschaft, 80331 Brenner
EP2925683A1 (fr) * 2012-11-30 2015-10-07 Corning Incorporated Brûleur à tourbillon et procédé pour une fusion par combustion en immersion
US20160238242A1 (en) * 2015-02-18 2016-08-18 Clearsign Combustion Corporation Burner with a perforated flame holder support structure
DE102017204583A1 (de) 2017-03-20 2018-09-20 Technische Universität Bergakademie Freiberg Brennerkopf zur Anordnung im Kopf eines Vergasers zur Primäroxidation gasförmiger Vergasungsstoffe in Vergasern nach dem Prinzip der autothermen Reformierung (ATR) oder der nichtkatalytischen Partialoxidation (POX)
DE102017204584A1 (de) 2017-03-20 2018-09-20 Technische Universität Bergakademie Freiberg Brennerkopf zur Anordnung im Kopf eines Vergasers zur Primäroxidation gasförmiger Vergasungsstoffe in Vergasern nach dem Prinzip der autothermen Reformierung (ATR) oder der nichtkatalytischen Partialoxidation (POX)
DE102017204582A1 (de) 2017-03-20 2018-09-20 Technische Universität Bergakademie Freiberg Brennerkopf zur Anordnung im Kopf eines Vergasers zur Primäroxidation gasförmiger Vergasungsstoffe in Vergasern nach dem Prinzip der autothermen Reformierung (ATR) oder der nichtkatalytischen Partialoxidation (POX)
DE102017204581A1 (de) 2017-03-20 2018-09-20 Technische Universität Bergakademie Freiberg Brennerkopf zur Anordnung im Kopf eines Vergasers zur Primäroxidation gasförmiger Vergasungsstoffe in Vergasern nach dem Prinzip der autothermen Reformierung (ATR) oder der nichtkatalytischen Partialoxidation (POX)

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See references of WO2005017411A1 *

Also Published As

Publication number Publication date
US20070134608A1 (en) 2007-06-14
ZA200601381B (en) 2008-09-25
CA2532716A1 (fr) 2005-02-24
WO2005017411A1 (fr) 2005-02-24
RU2006104875A (ru) 2007-09-20
DE10332860A1 (de) 2005-02-10
NO20060797L (no) 2006-02-17

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