EP2288674A2 - Dispositif support de brûleurs comportant un système de refroidissement pour un dispositif de brûleurs dans un réacteur de gazéification à lit entraîné - Google Patents

Dispositif support de brûleurs comportant un système de refroidissement pour un dispositif de brûleurs dans un réacteur de gazéification à lit entraîné

Info

Publication number
EP2288674A2
EP2288674A2 EP09734070A EP09734070A EP2288674A2 EP 2288674 A2 EP2288674 A2 EP 2288674A2 EP 09734070 A EP09734070 A EP 09734070A EP 09734070 A EP09734070 A EP 09734070A EP 2288674 A2 EP2288674 A2 EP 2288674A2
Authority
EP
European Patent Office
Prior art keywords
burner
cooling
holding device
burner holding
refractory
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Withdrawn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
EP09734070A
Other languages
German (de)
English (en)
Inventor
Olaf Schulze
Anton Althapp
Michael GÄTKE
Burkhard MÖLLER
Reinhold Grunwald
Wolfgang Rabe
Günter Scholz
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
Choren Industries 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 Choren Industries GmbH filed Critical Choren Industries GmbH
Publication of EP2288674A2 publication Critical patent/EP2288674A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72—Other features
    • C10J3/74—Construction of shells or jackets
    • C10J3/76—Water jackets; Steam boiler-jackets
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/46—Gasification of granular or pulverulent flues in suspension
    • C10J3/48—Apparatus; Plants
    • C10J3/485—Entrained flow gasifiers
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/46—Gasification of granular or pulverulent flues in suspension
    • C10J3/48—Apparatus; Plants
    • C10J3/50—Fuel charging devices
    • C10J3/506—Fuel charging devices for entrained flow gasifiers
    • 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2200/00—Details of gasification apparatus
    • C10J2200/15—Details of feeding means
    • C10J2200/152—Nozzles or lances for introducing gas, liquids or suspensions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
    • Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]

Definitions

  • the invention relates to a burner holding device with a cooling system for burners, in particular for burners, which are arranged in operative connection with an entrainment gasification reactor.
  • the designs for the cooling system of the burners are usually designed as a coiled tube system and include water supply. and transfers.
  • the designs of the cooling device still raise constructive questions, so that with optimum system design and skillful arrangement of the burner above the actual reactor such cooling at the interface burner - reactor ensures that it does not come to any safety of the system endangering overheating of components.
  • a safety risk for lack of cooling arises when overheating can lead to leakage of parts of the arrangement and thus to the escape of gases from the system.
  • Known systems therefore raise questions about safety and maintenance; An improved security usually requires high investment costs.
  • a device for burner attachment with integrated cooling system is described for example in DE 269 065.
  • the arrangement of cooling tubes and the possibility only To integrate a burner disadvantageously results in a risk of slagging on the outer edge of the reactor and too low a performance potential for large reactors.
  • DE 44 16 037 C1 describes a device for closing a supply opening and for burner attachment for pressure gasification reactors, which is characterized by a cooling disk for a special cooling water supply and removal as well as a special pipe suspension for the pipe system for heat removal. Again, this solution does not meet the safety, ease of maintenance, and cost requirements of a multi-burner, high power system for such reactors.
  • the present invention based on the object to provide an improved burner holding device with cooling system for a burner assembly in an entrained flow gasifier.
  • This object is achieved by a device having the features of claim 1. Preferred embodiments are described by the subclaims.
  • An embodiment of the invention relates to a burner holding device which is arranged on an entrainment gasification reactor.
  • the burner holding device contains at least two burners which are fed into the entrained flow gasification reactor.
  • the burner holding device is closed by a flange through which the burners and required supply and discharge lines extend.
  • a cooling device is arranged in the burner holding device, it advantageously comprises at least two independent cooling circuits.
  • the failure of the one cooling circuit can be compensated by the other. Every cooling circuit is as well be compensated by the other.
  • Each cooling circuit is also associated with only one burner, but it may advantageously be divided into sections, so that there is another section for cooling the surface which lies on the end face of the entrained flow gasification reactor.
  • the cooling coils which form the cooling circuits, advantageously arranged stable without further support.
  • the layer structure of the interior of the burner holding device which is initially from the bottom up from heat conductive and then insulating material, so that the desired heat dissipation takes place only at the desired areas, while over head no unnecessary temperature loss of the system can occur.
  • the cooling device can be advantageously provided from cooling coils, which can be sent clever and wrap gap-free.
  • Another embodiment relates to the fact that at least 20% of the total height of a burner are cooling gap-free surrounded by a corresponding portion of the cooling coil, so that at least the hot zone of the burner, the temperatures of 1600 0 C to 1800 0 C, reliable is cooled.
  • Still further embodiments set the advantageous independent admission of the independent cooling circuits simultaneously with coolant.
  • embodiments relate to the fact that the said layer of insulating material is a refractory to at least 800 0 C refractory potting compound with a density in the range of 2.0 kg / l, preferably of less than 1, 5 kg / l.
  • This can be lightweight concrete.
  • Still other embodiments state that the layer of up to at least 800 0 C refractory bulk material a refractory brick granules or an ON This is light refractory granules.
  • the heat-conducting layer may be a refractory concrete, in particular a dense Feuerhisbeton, while the insulating layer is advantageously a non-dense Feuerbeton.
  • Figure 1 A longitudinal section through the burner holding device according to the invention with the arrangement of the cooling system with burner attachment, main burners, starting burner, single cooling coils and cooling coil arrangement and layer materials.
  • Figure 2 Top view of the reactor with partial section.
  • the device of the present invention is for the improved cooling and thus the improved plant safety of a device which is suitable to produce synthesis gas, and which comprises one or more burners, which are arranged in operative connection with a Flugstromvergaser.
  • the burner holding device according to the invention with a cooling system for burners, serves to cool the space which is located around the burner (s) and extends from a side of the burner facing the reactor.
  • the cooling provided can avoid thermal overheating of the claimed components, in particular seals as the flange gasket and individual flanges, which are arranged on the burner holding tubes, protected by the lowering of the temperature from overheating and it is avoided that the flanges, seals and other components are damaged by such overheating, resulting in the escape of the at As one skilled in the art knows, such a gas leak has a tremendous hazard potential and the reduction in temperature serves to protect the material of the components involved, thereby reducing maintenance costs.
  • the holding device for the burners within which the cooling device is disposed will be referred to as "burner holding device.”
  • Several independently operating tube cooling systems will be provided as cooling devices which have a plurality of burners as so-called main burner decentralized, so that they are optionally arranged equidistant from the central burner, can therefore with a so-called “internal cooling circuit 'for cooling the central burner, and arranged with an external cooling circuit for cooling the outside of the center Burner can be equipped with it
  • Independent outer and inner cooling circuits in the hereinafter referred to as "lower part" part of the burner holding device may be provided.
  • a cooling circuit may be associated with a burner and a portion of the end face for cooling at the same time; he then has quasi different sections, a horizontal and a vertical, which forms a collar around the burner, so to speak.
  • Cooling is thus provided on the one hand in the plane which provides the interface between reactor and burner holding device (the end face), on the other hand, the burner such as starting burner and main burner are additionally cooled in its lower part.
  • Conventional burners are essentially designed as tubes; they can already be adequately cooled by at least partial cooling, which takes place around their hottest region, that is to say around the tube end facing the reactor (referred to below as the lower end) of the burner by means of cooling tube coils. It may be sufficient to cool only the lower third of the burner, advantageously at least the lower fifth of the burner is cooled, so about 20% of the burner height, based on its total height within the burner holder.
  • the burner is sensibly wrapped so far with cooling coils that the zone in which temperatures prevail to 1800 0 C, is indirectly cooled.
  • the winding of the cooling coils of the separately operating cooling circuits of the various burners is guided so that no cooling gaps arise.
  • Such a winding is known to the person skilled in the art.
  • the coil length for the burner cooling of the individual burner, so located as a winding around the lower burner part gate of the coil can be more than 20% of the total length of the entire single cooling system.
  • the coiled tube cooling system which is arranged around a main burner, can be subdivided into two or more individual systems.
  • the wound tube coil sections which form a "collar" at the lower part of the burner about its guide tubes, are, as well as the collar, which lie around the guide tubes of the starting burner, so cooled simultaneously with the tube coil sections, which are located on the front side of the reactor. It is thus advantageous to provide a closed cooling surface on the end face of the reactor and along the lower section of all the burners, wherein the height of the collars can be selected independently of one another occurs simultaneously, so that the failure of a cooling circuit does not lead to overheating of the entire burner holding device, since the other provided cooling circuits can compensate for the error.
  • the cooling coil system of the individual cooling systems is designed such that the outer cooling system both the cooling of the top of the reactor and the cooling of the lower areas of the Main burner takes over.
  • the individual coil cooling systems cool both the surface of the burner holding device facing the reactor and the lower regions of the main coil cooling system. burner and the starting burner.
  • the tube lengths for the respective in-plane portion and collar-forming portion may be the same, so that in the event of a cooling system failure, 50% of the total cooling is still provided.
  • the cooling can be such that the starting burner with the inner cooling circuit, including the supply and discharge pipes for the cooling water, forms a structural unit.
  • the outer cooling system for the main burner or burners can be fixed in the burner holding device according to the invention to a sheath which is attached to a located at the upper ends of the burner flange, the so-called main flange.
  • the attachment can be done on a collar or overhang.
  • This sheath also serves to accommodate further components holding the burners, which also take over protective functions with respect to temperature control.
  • the main flange of the burner holding device which will absorb the substantial portion of the pressure that arises in the system, and the other components protected by the following arrangement from overheating.
  • Layers of heat-conducting and heat-insulating materials are provided within said sheath below the flange, which provide protection in a number of ways.
  • the bottom of the burners, which are wrapped with the cooling coils so that so-called collars are formed, is potted with a mass that has an application temperature of at least 1500 0 C, that is fireproof up to this temperature, and has a very good to good thermal conductivity.
  • Suitable compositions for this lowermost layer are the dense potting compounds with the main component silicon carbide with thermal conductivities of 5 to 15 W / m K at temperatures of 1000 0 C, and dense refractory concretes with the main components alumina and / or chromium oxide and / or silica with thermal conductivities from 3.0 to 4.0 W / m K at temperatures of 1000 0 C viewed.
  • These refractory potting compounds can have densities of 2.4 to 3.6 kg / l.
  • Preferred potting compounds may have densities in the range of 2.5 to 2.7 kg / l; however, in principle, such a suitable refractory mass or refractory concrete may have a density of from 2.0 to 4.0 kg / l.
  • cooling coils of the burner holding device on the combustion chamber side to protect against the corrosive and chemical attack of the gas atmosphere and the slag with the usual from the state of Kraftwerkstechnik- and gasification Foundation and coating with suitable SiC-containing Bestampfungsmassen high thermal conductivity provided.
  • an insulating, less dense potting compound having a density in the range of 1, 0 to 2.0 kg / l.
  • thermal insulation and refractory concretes which have a high thermal insulation with a thermal conductivity of about 0.1 to 0.8 W / m K.
  • the room with a loose, heat-insulating bed is filled, which may be a refractory insulating granules from fireclay or other refractory brick.
  • the preferred density is in the range of 1 kg / l, the refractoriness should be at least 800 0 C.
  • a suitable particle size is 8 to 12 mm, preferably a particle size of about 10 mm diameter.
  • the entrained flow reactor itself also has a cooling jacket which extends up to the burner holding device such that it surrounds the end face like a collar. This collar virtually surrounds the cooling system provided by the burner holding device.
  • the height of the outer ring of the burner holding device wound through the cooling tubes corresponds to the height of the wound collar of the opposite cooling jacket of the reactor, so that an annular gap is created between the two cooling systems.
  • This gap can be adjusted with a gap width of 5 to 50 mm between the cooling elements, the cooling collar of the reactor and the wound outer ring of the burner holding device.
  • the set annular gap is advantageously continuously purged with inert gas, so that no or only insignificant amounts of reaction gases, which may penetrate into the annular gap, accumulate and can develop corrosive forces.
  • the inert gas flushing of the annular gap thus also serves to protect the burner holding device.
  • To the outside of the annular gap is filled with packages of refractory flexible sealing cord consisting of suitable ceramic fibers of the main component alumina and silica, which has sufficient permeability to the outflow of the inert purge gas to purge the annulus and to hedge the thermally induced relative movements of the cooling jacket and the Ensure burner holding device overall.
  • the burner holding device as set forth is filled with loose heat insulating bulk material and is delimited with a rolled jacket, the jacket described, against the main flange, wherein the rolled shell is held on the collar of the main flange by means of grooved pins or other fastening devices.
  • the jacket can be dismantled down in case of repair after removal of the grooved pins.
  • the heat-insulating loose bulk material falls out of the burner holding device, and a change of the cooling element is problematic after disconnecting the cooling water pipes. without a hitch.
  • Figure 1 shows at a centrally located start burner 4 and decentralized main burner 5 an outer cooling circuit 1 and an inner cooling circuit 2 with the arranged at the start burner 4 coil section, the starting burner cooling section 3.
  • the coil section 6 takes over the cooling of the lower portion of the main burner. 5
  • the entire burner holding device 7, whose components are essentially interchangeable, and which is arranged above the reactor system 8, also serves to supply and discharge the required quantities of cooling water via the discharge nozzles and tubes 9, 10.
  • the cooling water for the cooling of the individual systems via the discharge ports 9, 10 and other nozzles, not shown, which are welded to the main flange 11, respectively.
  • the cooling for the centrally located start burner 4 via the cooling coil system which takes over both the cooling of the inner region of the entire system of the burner holding device 7 as well as the lower part of the starting burner 4.
  • the fastening of the coil system which provides the outer cooling circuit 1 takes place at a separate Ummante- ment 12, which is firmly connected to the main flange 11 of the overall system.
  • the main flange 11 is protected by a multicomponent system of dissimilar heat-conducting materials comprising a loose-heat-fill bed 17 for filling the cavity, a heat-conducting concrete layer 18 and an insulating light-weight concrete layer 19 from excessive heat load.
  • a portion of the cooling coils extends an outer ring 13 forming on an outer edge of the burner holding device from the front side of the entrained flow gasification reactor upwards and at least along part of the casing 12, wherein a height of the upwardly extending cooling coil tubes a height of a collar 14 of a Cooling jacket of the flying stream gasification reactor 8, so that an annular gap 15 between the collar 14 and the upwardly extending cooling coil tubes is provided, which has a gap width of 5 to 50 mm.
  • the annular gap 15 is provided at the lower end of the burner holding device 7 with a sealing cord pack 20, which prevents the ingress of slag into the annular gap 15.
  • Fig. 2 shows the burner holding device 7 in plan view; three main burners 5 are surrounded by an outer cooling circuit 1, which is fed via the cooling water supply nozzles 9 and 10.
  • the start burner 4 is surrounded by an inner cooling circuit 2, also fed by cooling water supply nozzle 9 and 10.
  • the portion of the inner refrigerating cycle 2 is the starting burner cooling part 3.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Spray-Type Burners (AREA)

Abstract

L'invention concerne un dispositif support de brûleurs, disposé sur un réacteur de gazéification à lit entraîné, les brûleurs (4, 5) étant maintenus dans le dispositif support de brûleurs (7) et s'étendant à travers une bride (11) fixant le dispositif support de brûleurs (7) au réacteur de gazéification à lit entraîné (8), et à travers le dispositif support de brûleurs (7) dans le réacteur de gazéification à lit entraîné (8). Le dispositif de refroidissement comporte au moins deux circuits de refroidissement (1, 2) indépendants l'un de l'autre, un circuit de refroidissement (1, 2) étant au moins partiellement affecté à chaque brûleur (4, 5) de telle manière que chaque brûleur est entouré par une partie du dispositif de refroidissement sur une extrémité orientée vers la surface frontale, au moins un circuit de refroidissement (1, 2) étant au moins partiellement affecté à la surface frontale pour le refroidissement. Les brûleurs (4, 5) sont par ailleurs entourés, sous la bride (11), dans le dispositif support de brûleurs (7), de haut en bas, par : une couche (19) de masse de scellement isolante, ignifuge jusqu'à 800 °C, présentant une conductivité thermique de 0,02 - 0,8 W/m K; une couche de matière en vrac (17) ignifuge jusqu'à 800 °C; et une couche (18) de masse de scellement thermoconductrice, ignifuge jusqu'à 1800 °C, présentant une conductivité thermique de 3 - 15 W/m K.
EP09734070A 2008-04-22 2009-04-21 Dispositif support de brûleurs comportant un système de refroidissement pour un dispositif de brûleurs dans un réacteur de gazéification à lit entraîné Withdrawn EP2288674A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008020204A DE102008020204B4 (de) 2008-04-22 2008-04-22 Brennerhaltevorrichtung mit Kühlsystem für eine Brenneranordnung in einem Flugstromvergaser
PCT/EP2009/002883 WO2009129990A2 (fr) 2008-04-22 2009-04-21 Dispositif support de brûleurs comportant un système de refroidissement pour un dispositif de brûleurs dans un réacteur de gazéification à lit entraîné

Publications (1)

Publication Number Publication Date
EP2288674A2 true EP2288674A2 (fr) 2011-03-02

Family

ID=41111636

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09734070A Withdrawn EP2288674A2 (fr) 2008-04-22 2009-04-21 Dispositif support de brûleurs comportant un système de refroidissement pour un dispositif de brûleurs dans un réacteur de gazéification à lit entraîné

Country Status (11)

Country Link
US (1) US20110116987A1 (fr)
EP (1) EP2288674A2 (fr)
JP (1) JP5314127B2 (fr)
KR (1) KR20100139046A (fr)
CN (1) CN102015971A (fr)
AU (1) AU2009240279A1 (fr)
BR (1) BRPI0910486A2 (fr)
CA (1) CA2722019A1 (fr)
DE (1) DE102008020204B4 (fr)
RU (1) RU2499815C2 (fr)
WO (1) WO2009129990A2 (fr)

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Also Published As

Publication number Publication date
CA2722019A1 (fr) 2009-10-29
WO2009129990A3 (fr) 2010-04-01
US20110116987A1 (en) 2011-05-19
WO2009129990A2 (fr) 2009-10-29
DE102008020204B4 (de) 2011-12-01
CN102015971A (zh) 2011-04-13
AU2009240279A1 (en) 2009-10-29
RU2499815C2 (ru) 2013-11-27
JP5314127B2 (ja) 2013-10-16
JP2011519987A (ja) 2011-07-14
RU2010146291A (ru) 2012-05-27
KR20100139046A (ko) 2010-12-31
DE102008020204A1 (de) 2009-10-29
BRPI0910486A2 (pt) 2017-10-10

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