EP3924667A1 - Injecteur de combustible à fentes de dilatation pour un brûleur à charbon pulvérisé - Google Patents

Injecteur de combustible à fentes de dilatation pour un brûleur à charbon pulvérisé

Info

Publication number
EP3924667A1
EP3924667A1 EP20706979.0A EP20706979A EP3924667A1 EP 3924667 A1 EP3924667 A1 EP 3924667A1 EP 20706979 A EP20706979 A EP 20706979A EP 3924667 A1 EP3924667 A1 EP 3924667A1
Authority
EP
European Patent Office
Prior art keywords
fuel
fuel nozzle
mouth
pipe
nozzle
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.)
Pending
Application number
EP20706979.0A
Other languages
German (de)
English (en)
Inventor
Falk HOFFMEISTER
Reiner Hendricks
Stefan Gernand
Sven Mertin
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.)
Mitsubishi Power Europe GmbH
Original Assignee
Mitsubishi Power Europe 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 Mitsubishi Power Europe GmbH filed Critical Mitsubishi Power Europe GmbH
Publication of EP3924667A1 publication Critical patent/EP3924667A1/fr
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D1/00—Burners for combustion of pulverulent fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2201/00—Burners adapted for particulate solid or pulverulent fuels
    • F23D2201/10—Nozzle tips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2211/00—Thermal dilatation prevention or compensation

Definitions

  • the invention is directed to a fuel nozzle for a burner for the combustion of particulate fuel, in particular powdered, carbonaceous fuel such as coal or biomass, with a fuel pipe section to be assigned to a fuel or primary air pipe of the burner and a fuel pipe section which is integrally connected to the fuel pipe section and to form an opening area of the Fuel or primary air tube provided mouth section, wherein the fuel tube section has a fuel tube-side end for connection to the fuel or primary air tube and the mouth section has a mouth-side end.
  • the invention is directed to a method for producing a fuel nozzle for a burner for the combustion of particulate fuel, in particular pulverulent, carbon-containing fuel such as coal or biomass.
  • the invention is directed to a burner for burning particulate fuel, in particular powdered, carbonaceous fuel such as coal or biomass, with a fuel or primary air pipe and a jacket or secondary air pipe coaxially surrounding the fuel or primary air pipe, the fuel or primary air pipe opens into a fuel nozzle and the fuel nozzle has a fuel pipe section assigned to the fuel or primary air pipe and an orifice section connected in one piece to the fuel pipe section and forming an orifice region of the fuel or primary air pipe with an orifice end.
  • particulate fuel in particular powdered, carbonaceous fuel such as coal or biomass
  • DE 10 2005 032 109 B4 discloses a pulverized coal burner with a fuel pipe or primary air pipe conveying the fuel, in particular pulverized coal.
  • the fuel or primary air pipe is coaxially surrounded by a jacket air or secondary air pipe and this in turn by a tertiary air pipe.
  • a core air tube equipped with an ignition lance is arranged centrally within the fuel or primary air tube. The ignition of the fuel in the form of dust takes place in the opening area of the fuel pipe and is carried out here by means of the ignition lance by means of the ignition lance of the volatile constituents emerging from the solid fuel during an initial pyrolysis.
  • the NOx emissions released during combustion can be further reduced through a clear definition of the ignition conditions in the area of the opening of the fuel or primary air pipe in terms of time and location.
  • various flow elements can be provided in the mouth area of the fuel or primary air pipe.
  • a section that widens conically radially outward, a so-called air guiding throat, on the outside of the outlet end of the fuel pipe can provide an ignition process that takes place without influencing the secondary air and not by air fluctuations or turbulence is disturbed.
  • a stabilizing ring arranged on the inside with a radially inwardly protruding toothed ring serves to capture, delay and deflect the fuel in order to cause the fuel particles to ignite, preferably in the area of the toothed ring of the stabilizing ring.
  • the fuel or primary air pipe and the stabilizing ring on the one hand and the fuel or primary air pipe and the air deflecting throat in the mouth area on the other hand are connected to one another by welds, clamped or bolted structures. Precisely because of such welded or jointed connections, however, it can occur in the highly stressed and aggressive media flow through the mouth area of the fuel or primary air pipe to an increased repair and failure susceptibility and consequently to an impaired service life.
  • EP 1 741 977 B1 also proposes that the mouth area of the fuel or primary air pipe be manufactured in one piece as a separate component or fuel nozzle and, on the outside, the shape of a conical, radially outwardly widening jacket air or secondary air deflection cone as well on the inside the shape of a stabilizing ring with a radially inwardly pointing toothed ring.
  • This preferably cast component can then be welded to the end face of a fuel or primary air pipe, for example by means of a circular weld seam, in order to reduce the total number of welded connections in the opening area of the fuel or primary air pipe.
  • a burner of this type with a primary, secondary and tertiary tube arranged concentrically to one another and a fuel nozzle that forms the mouth area of the fuel or primary air tube and is provided in one piece with an outward-pointing air deflection cone and an inward-pointing stabilization ring is also from WO 2017/008937 A1 known.
  • EP 1 724 443 A1 discloses a nozzle ring which is intended to guide the working medium onto the guide vanes of the turbine of the exhaust gas turbocharger.
  • the nozzle ring points essentially an outer ring and an inner ring and a plurality of flow guide vanes arranged between them.
  • the flow guide vanes are connected to the outer ring in such a way that they can elastically deform in the radial direction.
  • a slot guided along the guide vane contour is embedded in the outer ring in order to enable the guide vanes to undergo elastic deformation in the radial direction independently of one another and from the nozzle ring when there is a high thermal load.
  • EP 1 512 489 A1 also relates to a similar task, namely to create a turbine blade that is exposed to particularly low thermal stresses.
  • a similar task namely to create a turbine blade that is exposed to particularly low thermal stresses.
  • thermal stress on the blade material due to high temperatures.
  • relief slots are provided in the blade trailing edge of the gas turbine blade, which extend transversely to the blade trailing edge through the latter.
  • the ignition system usually consists of ignition lances or similar burners with which the ignition flame required for combustion is generated by burning gaseous or liquid auxiliary fuel, such as natural gas or heating oil.
  • gaseous or liquid auxiliary fuel such as natural gas or heating oil.
  • the burner that is initially not in operation (“out of operation") is exposed to different temperatures resulting from the successive stages of the ignition process.
  • the ignition of the auxiliary burner for the combustion of the gaseous or liquid auxiliary fuel is followed by the ignition of the main burner for the combustion of the particulate, in particular powdered, carbon-containing fuel.
  • the combustion is stopped and the burner returns to the "out of service" state.
  • the invention is therefore based on the object of creating a solution that makes it possible to optimize the service life of burners for burning particulate fuel by reducing thermal stresses in the material, in particular in the mouth area of the fuel pipe or in the fuel nozzle.
  • the above object is achieved according to the invention in that the fuel nozzle is arranged along its circumference and extends axially in its longitudinal direction in the direction of the mouth end and in a mouth face of the fuel nozzle and formed in the form of the material wall of the fuel nozzle penetrating and severing incisions in the radial direction to compensate for a thermally induced alternating load on the fuel nozzle.
  • expansion slots are designed as material cutouts that run axially in the direction of the mouth end of the fuel nozzle and along their longitudinal extent completely penetrate and sever the material wall of the fuel nozzle radially from the outside to the inside of the fuel nozzle in the form of narrow elongated incisions or openings and along the circumference of the fuel nozzle in such a way arranged that a compensation space is created for thermal expansion of the material of the fuel nozzle, for example caused by the ignition process of the burner.
  • the fuel pipe section and the mouth section remain longitudinally and connected to one another by means of an annular, cylindrical section of the fuel pipe section, which has no expansion slots and is formed on the side of the fuel or primary air pipe, or via such a section of the fuel pipe section, so that the fuel nozzle as a whole, but also the fuel pipe section are formed in one piece together with the mouth section cut into individual segments.
  • the opening section of the fuel nozzle and consequently the opening area of the fuel or primary air pipe are subdivided into separate individual segments by means of the expansion slots, which are movable independently of one another in the event of temperature-related volume changes in the material of the fuel nozzle.
  • the expansion slots which are movable independently of one another in the event of temperature-related volume changes in the material of the fuel nozzle.
  • thermally induced alternating loads such as occur in particular when operating burners in steam generators, and the associated changes in volume in the fuel nozzle material can be compensated so that material stresses are reduced. This reduces the formation of cracks or even completely prevents crack formation, which in turn increases the durability of the fuel nozzle and thus the service life of the burner.
  • a particularly suitable location for the initial ignition of the burner is the mouth-side end or the mouth section of the fuel nozzle.
  • the ignition conditions external, i.e. radially outward and / or inward, d. H. arranged radially inwardly directed flow elements in the form of an air deflector and / or a stabilizing ring.
  • particularly high temperatures or temperature fluctuations occur precisely at the location of the initial ignition, as a result of which the material of the fuel nozzle is exposed to particularly heavy loads there.
  • the mouth section of the fuel nozzle is designed as an air deflecting groove that widens conically in the direction of the mouth end and is divided into individual air deflection segments due to the expansion slots.
  • the mouth section of the fuel nozzle comprises, at its mouth-side end, a stabilizing ring pointing radially inward, in particular provided with teeth and subdivided into individual stabilization segments by means of the expansion slots, the mouth section and the stabilization segments, in particular provided with teeth, as one-piece Component are formed.
  • the one-piece structure is realized by / via the connection of the stabilizing segments with the unprotected cylindrical tubular section of the fuel tube section on the side of the fuel tube section facing the fuel or primary tube.
  • flow elements arranged on the outside and / or inside on the mouth section of the fuel nozzle are designed as separate, independent and radially outward-pointing air deflection segments and / or a stabilization ring as separate, independent and radially inward-pointing stabilization segments, stresses can be created which occur due to thermal alternating loading to a particular extent in the area of the mouth section of the fuel nozzle, also reduce in the flow elements arranged there. In this way, the formation of cracks within the flow elements, the air deflection segments and / or the stabilization segments that are decisive for defining the ignition location and the ignition conditions, can be reduced and their service life increased.
  • the individual air deflection segments then fulfill the function of the air deflection throat known per se and the individual stabilization segments the function of the stabilization ring known per se, whereby a clear temporal and spatial definition of the ignition conditions in the mouth area is ensured.
  • a radially inwardly pointing stabilizing segment terminates in a plurality of teeth in the form of a toothed ring arch, ie the stabilizing segment is connected on the inside in one piece with the respective stabilizing segment Crown arch limited.
  • the entire fuel nozzle is advantageously designed as a one-piece component, the air deflection segments and the stabilizing segments in the mouth section of the fuel nozzle, which terminate in a respective toothed ring arch, being separated from one another by the expansion slots provided there.
  • the axial length of the expansion slots corresponds to approximately 1/3 to 2/3 of the total axial length of the fuel nozzle.
  • the number of expansion slots is in a range between 4 and 8.
  • a ratio between the axial length of the expansion slots and the total axial length of the fuel nozzle, which lies in a range between 1/3 and 2/3, represents an optimized compromise, especially in combination with a number of expansion slots, which lies in a range between 4 and 8 between the flexibility required to compensate for the alternating thermal load and the overall stability of the fuel nozzle required.
  • the exact number of expansion slots depends on the size of the burner or the circumference of the fuel nozzle.
  • a further advantage of the invention consists in an embodiment according to which the expansion slots extend into the region of the fuel pipe section of the fuel nozzle and each open into a circular recess. Because of the steadily running, radial curvature of the circular recess, stresses occurring locally in the region of the fuel pipe section at the respective end of the expansion slots can be reduced.
  • the respective recesses prefferably be designed as circular bores and the expansion slots as incisions extending from the respective recess to the mouth end of the fuel nozzle.
  • the radial and / or axial position of the end of an expansion slot arranged in the fuel pipe section of the fuel nozzle can be precisely determined by a radial in the direction of the longitudinal axis of the fuel nozzle extending through the material wall of the fuel nozzle at the desired position, circular bore is made in the fuel pipe section.
  • the corresponding expansion slot can then be designed as an incision guided axially in the direction of the mouth end of the fuel nozzle and cutting through the material wall of the fuel nozzle.
  • a preferred embodiment of the invention provides for the elongation slots to run parallel to a longitudinal axis of the fuel nozzle, in particular to run parallel to one another, and to surround the longitudinal axis of the fuel nozzle coaxially.
  • all expansion slots can particularly advantageously be cut into the material wall of the fuel nozzle in a single or in the same production step.
  • a fuel nozzle it is also advantageous for a fuel nozzle to be designed as a centrifugally cast component.
  • a design of the fuel nozzle as a cast part, in particular as a centrifugally cast part, is particularly suitable for producing a one-piece component that has the shape of radially outwardly and / or radially inwardly directed flow elements, such as radially outwardly pointing air deflection segments and / or radially inwardly , in particular comprising teeth, has stabilizing segments.
  • a second production step following the first production step circular recesses spaced from one another along the circumference of the fuel nozzle are drilled in the fuel pipe section through the material wall of the fuel nozzle and in a third production step following the second production step, starting from the ones drilled in the fuel pipe section , circular recesses, narrow, elongated expansion slots in the form of the material wall of the fuel nozzle in the radial direction penetrating and severing incisions in the direction of a mouth-side end of the fuel nozzle and a mouth-side end face of the fuel nozzle penetrating and severing cut.
  • the fuel nozzle is provided with the radially outwardly pointing and / or radially inwardly pointing flow elements in the form of an air deflecting groove and / or one, in particular one with teeth
  • Stabilization ring manufactured as a one-piece component in a centrifugal casting process.
  • the fuel pipe section is then provided with 4 to 8 bores along its circumference, depending on the circumference of the fuel nozzle, the distance between the bores from an end of the fuel nozzle on the mouth side being approximately 1/3 to 2/3 of the total length of the fuel nozzle.
  • narrow, elongated expansion slots running parallel to one another and parallel to a longitudinal axis of the fuel nozzle are cut in the direction of the mouth-side end of the fuel nozzle.
  • the end face of the fuel nozzle penetrating incisions are formed, in the third production step, the air deflecting throat, which widens conically in the direction of the mouth end, is divided into individual air deflecting segments and the radially inward pointing, in particular provided with teeth, stabilizing ring is divided into individual stabilizing segments.
  • the fuel nozzle according to the invention is suitable both for retrofitting or as a replacement part for burners which are used in particular in already existing fossil-fueled steam power plants.
  • such a burner is characterized in that the fuel nozzle is arranged along its circumference and extends axially in its longitudinal direction in the direction of the mouth-side end and ends in a mouth-side end face of the fuel nozzle and in the form of incisions penetrating and severing the material wall of the fuel nozzle in the radial direction trained
  • the invention is not limited to a burner with a fuel or primary air tube whose fuel nozzle is designed as a separate, one-piece component. It is thus also conceivable to provide the mouth area of a fuel or primary air pipe having an integral fuel nozzle with expansion slots according to the invention in order to compensate for the thermally induced alternating loads occurring there.
  • the fuel pipe section of the fuel nozzle has an end on the fuel pipe side and the fuel or primary air pipe is connected, in particular welded, to the fuel pipe end of the fuel pipe section.
  • the burner according to the invention and its fuel nozzle are therefore preferably manufactured as separate components in each case, the fuel nozzle being provided with expansion slots in particular already during their manufacture.
  • the fuel nozzle can then be welded to the end face of the fuel or primary air pipe, for example by means of a circular weld seam.
  • any flow elements pointing radially outward and / or inward can be molded in one piece onto their mouth section and / or their mouth-side end during the manufacture of the fuel nozzle.
  • Figure 1 is a schematic perspective illustration of an exemplary
  • FIG. 2 shows a schematic side view of the exemplary embodiment of the fuel nozzle according to the invention from FIG. 1.
  • FIG. 1 shows a schematic perspective illustration of an exemplary embodiment of a fuel nozzle 100 according to the invention.
  • the fuel nozzle 100 shown has a fuel pipe section 110, the fuel pipe-side end 111 of which is suitable for connection to a fuel pipe or primary air pipe 200 of a burner not shown further, indicated by the dashed line is.
  • a carrier gas in particular air
  • a granular, powdery solid fuel such as coal and / or biomass
  • the fuel nozzle 100 Adjacent to the fuel pipe section 110 and designed as a one-piece component with it, the fuel nozzle 100 also has an opening section 120, the opening end 121 of which is assigned to a combustion chamber (not shown) during operation of the burner or protrudes into the combustion chamber and thus an opening area 210 of the fuel pipe 200 trains.
  • the fuel nozzle 100 Along the perimeter of the fuel nozzle 100 are several, here seven, expansion slots 160 in each arranged the same distance from one another.
  • the expansion slots 160 run both parallel to one another and parallel to a longitudinal axis z of the fuel nozzle 100 or surround the longitudinal axis z of the fuel nozzle 100 coaxially.
  • the expansion slots 160 are designed in the form of narrow longitudinal sections and longitudinal slots that extend in the direction along the longitudinal axis z.
  • each expansion slot 160 opens into a circular recess 161, in particular a bore, which radially penetrates the fuel pipe section 110, i. H. Forming a connection from the outside of the fuel nozzle 100 to the interior thereof, passing through the material wall of the fuel nozzle 100.
  • a respective expansion slot 160 extends axially in the direction of the mouth end 121 of the fuel nozzle 100.
  • the distance between a recess 161 and the mouth end 121 of the fuel nozzle 100 or the length of an expansion slot 160 corresponds approximately to 2/3 the total axial length of the fuel nozzle 100.
  • the expansion slots 160 penetrate the fuel nozzle 100 completely in the radial direction, i. H.
  • the recesses 161 can also be used to reduce stresses that occur at the end of a respective expansion slot 160 due to the relative movements of different individual segments 130 with respect to one another.
  • the fuel nozzle 100 is provided with flow elements for specifying and defining the ignition conditions.
  • the mouth section 120 has stabilizing segments 150 pointing radially inward, which overall form a toothed ring and are each separated or spaced apart by an expansion slot 160 which cuts through the material wall of the fuel nozzle 100 in the radial direction.
  • Each stabilization segment 150 terminates in a gear arch with inwardly pointing teeth 151 or is delimited by the teeth 151.
  • the stabilizing segments 150 with the associated teeth 151 can move individually and independently of one another to compensate for thermally induced stresses and, in their entirety, form a stabilizing ring with teeth 151 for detecting, delaying and deflecting the fuel in the fuel or primary air pipe 200.
  • FIG. 2 which shows a schematic side view of the exemplary embodiment of the fuel nozzle 100 according to the invention from FIG. 1, it can be clearly seen that the mouth section 120 has the shape of a further flow element radially on the outside.
  • the mouth section 120 is formed in the form of air deflection segments 140 which expand conically in the direction of the mouth end 121 and expand radially outward.
  • the air deflection segments 140 are each separated or spaced apart from one another by means of an expansion slot 160 and can be moved independently of one another in order to compensate for thermally induced stresses.
  • the air deflection segments 140 form a flow element in the form of an air deflection groove.
  • the air deflection segments 140 enable an ignition process that takes place without influencing the secondary air and is not disturbed by air fluctuations or turbulence.
  • the end 111 on the fuel pipe side which delimits the fuel pipe section 110 of the fuel nozzle 100, is provided for connection to the fuel or primary air pipe 200 (see FIG. 1) of a burner and can be welded, for example, to the end face of the fuel or primary air pipe 200.
  • the entire fuel nozzle 100 is designed as a one-piece component and is preferably manufactured using the centrifugal casting process.
  • a low-stress component is thus provided which is suitable for use as a fuel nozzle 100 in the mouth area 210 of a fuel or primary air pipe 200 of a burner for a steam power plant, which is particularly thermally stressed due to pronounced temperature fluctuations. Due to the reduced formation of cracks in the fuel nozzle 100 according to the invention, the service life of a burner equipped with it can be increased considerably.
  • the fuel pipe section 110 and the mouth section 120 are connected to one another longitudinally and by means of an annular, cylindrical section of the fuel pipe section 110, which has no expansion slots and is formed on the side of the fuel or primary air pipe 200, or via such a section of the fuel pipe section 110, so that the fuel nozzle 100 as a whole , but also the fuel pipe section 110 together with the mouth section 120 cut into individual segments 130 are formed in one piece.
  • the shape of the incisions or expansion slots 160 need not be designed in a straight elongated shape.
  • the incisions or expansion slots 160 can also be curved or corrugated or similar.
  • each expansion slot 160 is formed in the area of the fuel pipe section 110, these, that is, the bores and recesses 161 and the beginning of the expansion slots 160, but also exactly in the transition from the fuel pipe section 110 to the mouth section 120 or exclusively in the mouth section 120.
  • the bores 160 and the expansion slots 161 can be mechanically machined and cut into the material wall or can be formed in the material wall by means of a laser beam.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

L'invention concerne un injecteur de combustible (100) pour un brûleur destiné à assurer la combustion de combustible particulaire, en particulier de combustible carboné, pulvérulent, comme du charbon ou de la biomasse, ledit injecteur de combustible comportant une partie de conduit de combustible (11) associée à un conduit de combustible ou d'air primaire (200) du brûleur et une partie d'embouchure (120) reliée d'un seul tenant à la partie de conduit de combustible et destinée à former une zone d'embouchure (210) du conduit de combustible ou d'air primaire (200) de la zone d'embouchure (120), la partie de conduit de combustible (110) présentant une extrémité côté conduit de combustible (111) à relier au conduit de combustible ou d'air primaire (200) et la partie d'embouchure (120) présentant une extrémité côté embouchure (12). L'invention vise à mettre au point une solution permettant d'optimiser la durée d'utilisation de brûleurs de combustion de combustible particulaire, dans la mesure où les tensions thermiques dans le matériau, en particulier dans la zone d'embouchure du conduit de combustible ou d'air primaire (200) ou dans l'injecteur de combustible (100) sont réduites. A cet effet, l'injecteur de combustible (100) présente des fentes de dilatation (160) ménagées sur sa périphérie et s'étendant dans leur extension longitudinale axialement en direction de l'extrémité côté embouchure (121) et se terminant dans une surface frontale (122) de l'injecteur de combustible (100), lesdites fentes de dilatation se présentant également sous forme de découpes qui traversent et séparent la paroi de matériau de l'injecteur de combustible (100) dans la direction radiale et étant destinées à compenser une charge alternative de l'injecteur de combustible (100), d'origine thermique.
EP20706979.0A 2019-02-13 2020-02-13 Injecteur de combustible à fentes de dilatation pour un brûleur à charbon pulvérisé Pending EP3924667A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019103640.2A DE102019103640A1 (de) 2019-02-13 2019-02-13 Brennstoffdüse mit Dehnungsschlitzen für einen Kohlenstaubbrenner
PCT/EP2020/053783 WO2020165357A1 (fr) 2019-02-13 2020-02-13 Injecteur de combustible à fentes de dilatation pour un brûleur à charbon pulvérisé

Publications (1)

Publication Number Publication Date
EP3924667A1 true EP3924667A1 (fr) 2021-12-22

Family

ID=69699833

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20706979.0A Pending EP3924667A1 (fr) 2019-02-13 2020-02-13 Injecteur de combustible à fentes de dilatation pour un brûleur à charbon pulvérisé

Country Status (4)

Country Link
EP (1) EP3924667A1 (fr)
DE (1) DE102019103640A1 (fr)
WO (1) WO2020165357A1 (fr)
ZA (1) ZA202106708B (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6823677B2 (en) * 2002-09-03 2004-11-30 Pratt & Whitney Canada Corp. Stress relief feature for aerated gas turbine fuel injector
DE50306044D1 (de) * 2003-09-05 2007-02-01 Siemens Ag Schaufel einer Turbine
EP1724443A1 (fr) * 2005-05-20 2006-11-22 ABB Turbo Systems AG Couronne directrice
DE102005032109B4 (de) * 2005-07-07 2009-08-06 Hitachi Power Europe Gmbh Kohlenstaubbrenner für niedrige NOx-Emissionen
EP2196734A1 (fr) * 2008-12-12 2010-06-16 Siemens Aktiengesellschaft Lance de combustible pour un brûleur
DE102015111585A1 (de) * 2015-07-16 2017-01-19 Mitsubishi Hitachi Power Systems Europe Gmbh Kohlenstaubbrenner mit einstückiger, elektrisch beheizter Brennstoffdüse
CN206191575U (zh) * 2016-11-28 2017-05-24 戴卫平 一种煤粉燃烧器喷嘴

Also Published As

Publication number Publication date
DE102019103640A1 (de) 2020-08-13
ZA202106708B (en) 2022-08-31
WO2020165357A1 (fr) 2020-08-20

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