EP4067744A1 - Agencement de barreau de grille et procédé permettant de faire fonctionner un agencement de barreau de grille - Google Patents

Agencement de barreau de grille et procédé permettant de faire fonctionner un agencement de barreau de grille Download PDF

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Publication number
EP4067744A1
EP4067744A1 EP22174061.6A EP22174061A EP4067744A1 EP 4067744 A1 EP4067744 A1 EP 4067744A1 EP 22174061 A EP22174061 A EP 22174061A EP 4067744 A1 EP4067744 A1 EP 4067744A1
Authority
EP
European Patent Office
Prior art keywords
grate bar
grate
running surface
air
head
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.)
Granted
Application number
EP22174061.6A
Other languages
German (de)
English (en)
Other versions
EP4067744C0 (fr
EP4067744B1 (fr
Inventor
Johannes Ulrich Martin
Max Josef Schönsteiner
Helmut Pupp
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.)
Martin GmbH fuer Umwelt und Energietechnik
Original Assignee
Martin GmbH fuer Umwelt und Energietechnik
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 Martin GmbH fuer Umwelt und Energietechnik filed Critical Martin GmbH fuer Umwelt und Energietechnik
Publication of EP4067744A1 publication Critical patent/EP4067744A1/fr
Application granted granted Critical
Publication of EP4067744C0 publication Critical patent/EP4067744C0/fr
Publication of EP4067744B1 publication Critical patent/EP4067744B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H7/00—Inclined or stepped grates
    • F23H7/06—Inclined or stepped grates with movable bars disposed parallel to direction of fuel feeding
    • F23H7/08—Inclined or stepped grates with movable bars disposed parallel to direction of fuel feeding reciprocating along their axes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H17/00—Details of grates
    • F23H17/12—Fire-bars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H17/00—Details of grates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H17/00—Details of grates
    • F23H17/08—Bearers; Frames; Spacers; Supports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H2900/00—Special features of combustion grates
    • F23H2900/17002—Detachable or removable worn-out parts

Definitions

  • the invention relates to a grate bar arrangement with a plurality of grate bars, each with a running surface and a grate bar head, in which an upper grate bar with its grate bar head is arranged so that it can move relative to a lower grate bar in such a way that the grate bar head can slide over a front and a rear area of the running surface of the grate bar .
  • the invention also relates to a method for operating a grate bar arrangement with a plurality of grate bars, each with a running surface and a grate bar head, in which an upper grate bar with its grate bar head is moved relative to a lower grate bar in such a way that the grate bar head extends over a front and a rear area of the running surface of the grate bar slides.
  • Grate firing is solid fuel firing in which the fuel lies on a grate and burns.
  • the grate is an apertured surface.
  • the openings in the grate are used to supply the air required for combustion ("downdraft") and the ash is discharged via a deslagger.
  • the necessary movements for circulating (“stoking") the fire take place automatically by moving the grate.
  • a stair grating/gravel grating looks similar to a flat-lying stair with a slope typically between 0 and 30, such as 24 or 26 degrees.
  • the fuel is moved over the grate by the steps moving and thus transporting the fuel.
  • the stepped grate is also called a feed grate or a reverse feed grate (in both cases, however, the fuel moves forward).
  • Step grates are used for lumpy and ash-rich fuels that require improved stoking, e.g. B. household and commercial waste, biomass, processed waste or today less often lignite.
  • Stepped grates have a large number of grate bars, which can be firmly connected to one another or can be moved relative to one another in order to move the material to be burned on the grate.
  • Grate bars usually have air slots in front of the running surface in a grate bar head.
  • recesses or in the form of round openings in the surface are provided on the side wall of the grate bar, which allow air to be conveyed to the underside of the grate bar, which can then escape between grate bars through the air slot to the combustion bed.
  • metal parts in the area of the grate bar head can get caught in the air slots and become stuck.
  • the EP 2 614 304 A1 Air slots which are arranged in the side walls of the grate bar in the area of the grate bar head and the running surface. Since these air slots are arranged on both sides of the grate bar, the built-in grate bar has recesses opposite each other, which together form an air slot. With a relative movement of adjacent grate bars, particles that have penetrated the air slots are cut up and comminuted in such a way that they are conveyed back into the combustion bed by the air flow in the air slots.
  • a grate bar is not used as a single grate bar in the operation of a combustion plant, but as a grate bar arrangement with several grate bars.
  • An upper grate bar with its grate bar head is arranged so that it can move relative to a lower grate bar in such a way that the grate bar head can slide over a front and a rear area of the running surface of the grate bar.
  • the running surface has air slots in the front and rear area and the grate bar head can be displaced relative to these air slots in such a way that the opening cross section of all the air slots remains constant.
  • grate bars arranged one above the other can be moved relative to one another, and grate bars arranged next to one another can either be movable relative to one another or can also be firmly screwed together.
  • the invention is therefore based on the object of further developing such known grate bars in order to protect the grate bars in practical operation and to achieve a defined aeration of the combustion bed.
  • the object on which the invention is based is achieved with a method for operating a grate bar arrangement with a plurality of grate bars, each with a running surface and a grate bar head, in which an upper grate bar is moved with its grate bar head relative to a lower grate bar in such a way that the grate bar head over a front and a rear area of the running surface of the grate bar slides.
  • the running surface has air slits in the front and rear area and the grate bar head is displaced relative to these air slits in such a way that the opening cross section of all air slits remains constant.
  • This grate bar arrangement need not contain all the grate bars of the furnace. It is sufficient if these grate bars are arranged in a region of several grate bars arranged one above the other and are provided with air slots in such a way that the opening cross section of all the air slots remains essentially constant even during operation.
  • the object on which the invention is based is also achieved with an arrangement with a grate bar, in which the at least one air slot is arranged only on one side wall and not in the opposite side wall.
  • air slots are only arranged on one side wall, it is impossible for particles to penetrate into the area of opposite air slots and be exposed to a shear stress which acts on at least one grate bar.
  • the arrangement of the air slots in the area of the running surface and not in the area of the grate bar head ensures that a grate bar lying above it, which is on the Tread sliding exerts a force on metal particles that get caught in an air slot.
  • the shearing effect therefore does not act between two adjacent grate bars, but rather between a grate bar below, where particles may penetrate into the air slot, and a grate bar above, which slides on the running surface and thus also pushes out particles that have penetrated an air slot .
  • the overlying grate bar in the area of the running surface of the underlying grate bar clears the air slots of particles caught therein, it is further proposed that the side wall has at least one air slot only in the area of the running surface.
  • the grate bar no longer has any air slits in the area of the grate bar head and either one air slit is provided in the area of the running surface or several air slits are provided one behind the other. preferably two air slots are arranged one behind the other in the area of the tread.
  • the air slot have a cross-sectional area which widens from the running surface to the underside.
  • the air slot thus widens from the upper running surface to the underside below and this means that particles that get from the combustion bed and thus from the running surface into the air slot can fall down through the air slot if they are passed through an over the be pressed into the air slot or cut by the upper grate bar guided by the running surface.
  • An air slot is generally formed with a front side directed transversely to the extent of the grate bar and opposite a rear side and a side wall lying in between.
  • the front, the rear and/or the side wall are arranged at an acute angle to the tread, so that on the one hand the cross-sectional area expands directly under the tread and on the other hand an edge is created on the tread that prevents particles from being cut up favored.
  • the lower end of the grate bar head lies on the running surface of a grate bar below and the sliding surface of the upper grate bar head touches the running surface of the grate bar below.
  • This sliding surface can Have clearing bar, which is shaped so that it acts with a defined force on particles that are on the tread or possibly something have penetrated into the air slots.
  • the clearing strip can have a contact surface extending at an acute angle or an arc with a radius of less than 200 mm and in particular around a circular sector of less than 80° to the sliding surface as the cutting edge.
  • This cutting edge can be arranged in the longitudinal direction of the grate bar at the front end of the sliding surface in order to cut off, scrape off or advance material from the surface of the grate bar underneath when the grate bar is advanced over a running surface of a grate bar underneath.
  • the cutting edge can also be arranged at the rear end of the sliding surface in order to clean the surface of the underlying running surface with the cutting edge when the upper grate bar is pulled back relative to the running surface of an underlying grating bar, over which the sliding surface of the overlying grating bar is pulled.
  • the grate bar head thus has two cutting edges which clean the running surface of a grate bar located underneath when the grate bar is advanced and retracted.
  • the sliding surface of the grate bar can also have a clearing strip which, as a thrust edge, has a contact surface extending at an obtuse angle or an arc with a radius of more than 200 mm and in particular around a sector of a circle of more than 100° to the sliding surface.
  • This thrust edge can also be formed on the front area of the sliding surface and/or on the rear area of the sliding surface in order to allow the sliding surface of the grate bar head to slide safely over such deposits even if the running surface under the grate bar head is dirty.
  • a particularly preferred embodiment has a cutting edge in the front area of the sliding surface and a pushing edge in the rear area of the sliding surface. je
  • the grate bar can have a cutting edge or a thrust edge at different points and different grate bars can also be combined in order to use the optimal grate bar in different combustion areas, the thrust and has cutting edges. This allows grate bars to be individually adapted to the combustion process, which leads to optimal combustion.
  • the grate bar according to the invention can also have a bar that is in one or two parts.
  • a one-piece bolt is understood to mean a bolt that is not cast or welded on, but as a bolt is a removable part.
  • This bar can be arranged positively or non-positively on a side wall of the grate bar. For example, it can have a head that is inserted into a slot and is fixed by twisting.
  • the bolt is preferably in two parts and in particular designed as a combination of screw and nut. Therefore, it is suggested that the latch of the grate bar has a screw. This enables easy dismantling of grate bars, especially in the edge area of the combustion bed.
  • the nut that can be screwed on can lie under the running surface or on the outside next to the running surface. Preferably, the screw head is on the outside and the nut is protected under the tread.
  • the screw of the bolt has a head that has a polygonal socket.
  • the screw can then be, for example, a so-called Allen screw, a hexagon socket or a square socket.
  • the head of the screw is preferably located on a side wall in such a way that it protrudes outwards over the side wall and takes over the function of the bolt, while a nut is arranged below the running surface and only serves to hold the screw and, if necessary, to replace the screw.
  • the head of the bolt forms the function of the known bolt, since this head extends into a bolt window of an adjacent grate bar can intervene. It is advantageous if this head has a round cross section, since then no disruptive material can collect on the bolt. The round surface of the bar no longer forms a level on which disruptive material agglomerates.
  • a grate bar can also have several bars at different points on the grate bar. However, it is advantageous if the grate bar has only one bar, since then the problems arising at the bar are also reduced to one problem area.
  • the grate bar has a latch window into which a latch of an adjacent grate bar can engage and which has an opening on the side opposite the running surface.
  • This embodiment is intended for the edge bars, since there it is not necessary to hold the grate bar down, i.e. to secure it against lifting.
  • the transom window thus has an opening at the bottom through which material that gets into the transom window can fall out of the transom window again.
  • the grate bar has a core bar that is cast into the grate bar is also essential to the invention, independently of the aforementioned features.
  • grate bars made of different materials. These grate bars have a special material on the running surface, while the rest of the grate bar is made of a different material. This enables particularly stable running surfaces.
  • a core bar cast into the grate bar has a different function. It can be designed to be particularly ductile, so that it does not also break if the bar breaks, or at least still holds the fragments of the bar together in such a way that the bar cannot fall down. This means that the grate can continue to be operated even if the grate bar is broken until the next controlled standstill, without the grate missing a broken bar that has fallen into the hopper below.
  • the grate bar 1 shown has a grate bar head 2, two side walls 3 and 4 and a running surface 5.
  • a front area of the grate bar 1 is the grate bar head 2 and behind it is the running surface 5 in a rear area of the grate bar 1.
  • Below the running surface 5 lies between the Side walls 3 and 4 the underside 6 of the grate bar 1.
  • the air slots 9 and 10 are only arranged in the area of the running surface 5 and not in the area of the grate bar head 2 . As a result, the air slots 9, 10 are completely run over by a grate bar head pushed onto the running surface 5 of another grate bar.
  • the front flank 11 and the rear flank 12 of the air slot 9 are each arranged at an acute angle to the running surface 5, so that the cross-sectional area 13 (cf. figure 6 ) from the running surface 5 to the underside 6 of the grate bar 1 expanded.
  • the enlargement of the cross sections 13 and 14 from the running surface 5 to the underside 6 of the grate bar 1 is also reinforced by the fact that the recesses 7 and 8 are arranged between the flanks 11 and 12 or 15 and 16 at an acute angle to the running surface 5 that the cross-sectional area 13, 14 of the air slots 9, 10 widens from the tread 5 to the underside 6.
  • the figure 6 shows how several grate bars 1, 21, 22 are arranged next to one another in order to provide running surfaces 5, 23, 24 essentially in one plane with air slots 25 to 28 in between.
  • the figure 7 shows how on the running surfaces 5 and 23 of the grate bars 1 and 21 the grate bar heads 29 and 30 of other grate bars 31 and 32 slide along.
  • the grate rod heads 29 and 30 move through the air slots 9, 10 and 27 and 28 of the Grate bars 1 and 21 to push material lying on the running surfaces 5 and 23 combustion bed from the air slots 9, 10 and 27 and 28 away.
  • the front end of the grate rod head 2, 29, 30 has a special shape, depending on the application and application - as in the Figures 8, 9 and 10 shown in cross section - can be formed.
  • the grate head 33 shown has a lower end 34 with a sliding surface 35 which has a cutting edge 37 at the front end of the grate head 33 .
  • This cutting edge 37 has an acute angle 38 between the sliding surface 35 and a thrust surface 36.
  • the inside 40 serves as a clearing bar, which is figure 8 shown embodiment is formed in the transition to the sliding surface 35 as a thrust edge 41.
  • This thrust edge 41 has an obtuse angle 42 between the sliding surface 35 and a thrust surface 40 .
  • the figure 8 has as a thrust edge 41 an arc with a radius of about 6 mm and a circular sector of about 105 °, shows the figure 9 a cutting edge 46 on the grate bar head 45 - as in figure 8 - And as a thrust edge 41 in cross section training as a corner with an obtuse angle.
  • the figure 10 shows a grate bar head 50 with a cutting edge 51 with an acute angle 52 in the front area of the sliding surface 53 and another cutting edge 54 with an acute angle 55 in the rear area of the sliding surface 53 of the grate bar head 50.
  • the Figures 2 to 5 show two-part bolts 60, 61, each consisting of a screw 62, 63 and a nut 64, 65.
  • the screw 62 has a screw head 66 with a polygonal socket 67 and the screw 63 has a mushroom-shaped screw head 68 .
  • the bolt 60, 61 has a bolt head with a round cross-section, which is either arranged in the wall of the adjacent grate bar ( figure 3 ) or under the underside 69 of the adjacent grate bar is arranged ( figure 5 ).
  • the undersides 6 and 69 of adjacent grate bars 1 and 23 are essentially flat between the side walls 3 and 4 in the area of the bolts 60 and 61, so that the screws 62 and 63 and the nuts 64 and 65 are easily accessible.
  • Each grate bar 1, 23 has a transom window 70, 71 on one side wall 3 and a transom 60, 61 on the opposite side wall 4, so that when grate bars 1, 23 are next to each other, a transom 60, 61 can be inserted into the transom window 70, 71 of the adjacent one Latch can intervene.
  • the bolt window 70, 71 can accommodate the bolt 60, 61 of the adjacent grate bar in the upper area and have an opening (not shown) on its side opposite the running surface 5.
  • the grate bar shown has only a single bolt 66 and a core bar 80 is cast into the grate bar 1 .
  • This cast-in core rod 80 lies under the tread in such a way that it does not touch the tread.
  • Cast in means that the core bar is preferably completely surrounded by the remaining material of the grate bar and is therefore completely encased by other material.
  • the figure 21 shows how the core bar 80 bends when the grate bar 1 breaks and how it bridges this gap 81 in the event of a gap 81 occurring during the break and how the broken parts 82, 83 of the grate bar 1 are held together.
  • Figures 15 to 17 show a grate bar arrangement 90 with two fixed grate bars 91 and 92 and a movable grate bar 93 arranged between them
  • Figures 15 to 17 can be seen how the movable grate bar 93 between the fixed grate bars 91 and 92 from the in figure 15 shown lower position over the in figure 16 middle position shown in the in figure 17 shown upper position can be pushed.
  • the arrangement and design of the grate bars are designed in such a way that, regardless of the position of the movable grate bar 93, the opening cross section of all the air slots 94 to 97 remains constant.
  • the grate bars 91 and 93 have a running surface for this 98, 99 and one grate bar head 100, 101 each, and the grate bar 93 is arranged as the upper grate bar with its grate bar head 101 movable relative to the grate bar 91, which serves as the lower grate bar.
  • the grate bar head 101 slides over a front area 102 and a rear area 103 of the running surface 98 of the grate bar 91.
  • the air slot 95 in the rear area 103 is run over by the grate bar head 101 of the grate bar 93, so that the air slot 95 then - as in figure 16 shown - is covered by the grate bar head 101 of the grate bar 93.
  • the air slot 96 in the grate bar 93 which was previously covered by the grate bar 92, is uncovered.
  • the air slots 94 and 95 open
  • the air slots 94 and 96 are open.
  • the figure 17 shows the grate bar 93 pushed completely upwards, which now covers both the air slot 95 and the air slot 94 of the grate bar 91.
  • the air slots 96 and 97 of the movable grate bar 93 are uncovered here, so that two air slots are also exposed again in this position of the movable grate bar 93 .
  • This example of a grate bar arrangement shows how the arrangement of the air slots 94, 95, 96, 97 in the area of the running surfaces 98, 99 makes it possible to ensure that the opening cross section of all air slots remains constant during the movement of the grate bars.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
  • Metal Rolling (AREA)
EP22174061.6A 2020-05-25 2021-04-26 Agencement de barreau de grille et procédé permettant de faire fonctionner un agencement de barreau de grille Active EP4067744B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020003114.5A DE102020003114A1 (de) 2020-05-25 2020-05-25 Roststab, Roststabanordnung und Verfahren zum Betreiben einer Roststabanordnung
EP21000116.0A EP3926237B1 (fr) 2020-05-25 2021-04-26 Barreau de grille, agencement de barreau de grille et procédé de fonctionnement d'un dispositif de barreau de grille

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP21000116.0A Division EP3926237B1 (fr) 2020-05-25 2021-04-26 Barreau de grille, agencement de barreau de grille et procédé de fonctionnement d'un dispositif de barreau de grille
EP21000116.0A Division-Into EP3926237B1 (fr) 2020-05-25 2021-04-26 Barreau de grille, agencement de barreau de grille et procédé de fonctionnement d'un dispositif de barreau de grille

Publications (3)

Publication Number Publication Date
EP4067744A1 true EP4067744A1 (fr) 2022-10-05
EP4067744C0 EP4067744C0 (fr) 2023-10-25
EP4067744B1 EP4067744B1 (fr) 2023-10-25

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EP21000116.0A Active EP3926237B1 (fr) 2020-05-25 2021-04-26 Barreau de grille, agencement de barreau de grille et procédé de fonctionnement d'un dispositif de barreau de grille
EP22174061.6A Active EP4067744B1 (fr) 2020-05-25 2021-04-26 Agencement de barreau de grille et procédé permettant de faire fonctionner un agencement de barreau de grille

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EP21000116.0A Active EP3926237B1 (fr) 2020-05-25 2021-04-26 Barreau de grille, agencement de barreau de grille et procédé de fonctionnement d'un dispositif de barreau de grille

Country Status (6)

Country Link
US (2) US11906162B2 (fr)
EP (2) EP3926237B1 (fr)
JP (1) JP7235799B2 (fr)
DE (1) DE102020003114A1 (fr)
PL (1) PL4067744T3 (fr)
SG (1) SG10202104656WA (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR112021025791A2 (pt) * 2019-07-05 2022-05-10 Hitachi Zosen Inova Ag Bloco de grelha para uma grelha de incineração
BR112021025942A2 (pt) * 2019-07-05 2022-02-22 Hitachi Zosen Inova Ag Bloco de grelha para uma grelha de incineração
EP3982044B1 (fr) * 2020-10-08 2024-04-24 Martin GmbH für Umwelt- und Energietechnik Procédé pour maintenir ensemble des barreaux de grille adjacents, ainsi qu'un ensemble de barreaux de grille

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JPS53130204U (fr) * 1977-03-25 1978-10-16
EP0621449A1 (fr) * 1993-04-20 1994-10-26 Doikos Investments Ltd Procédé pour la combustion de déchets sur une grille de combustion ainsi qu'une grille de combustion pour la mise en oeuvre du procédé et barreau pour la fabrication d'une telle grille
EP0757206A2 (fr) * 1995-08-02 1997-02-05 Asea Brown Boveri Ag Grille pour un foyer
KR20130053519A (ko) * 2011-11-14 2013-05-24 일도바이오테크주식회사 내열성 및 내마모성이 우수한 화격자를 구비한 보일러
EP2614304A1 (fr) 2010-09-09 2013-07-17 Tiska GmbH Barreau de grille pour four avec conduits d'airgrate bar for a furnace comprising air ducts

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DE416243C (de) 1923-02-11 1925-07-10 Evaporator Akt Ges Fa Deutsche Roststab fuer Unterwindfeuerungen
US1931003A (en) * 1932-12-19 1933-10-17 Nathan K Kramaroff Water heater
US2879727A (en) * 1953-06-29 1959-03-31 Arthur L Walters Furnace sawdust burners
DE2808057C2 (de) 1978-02-24 1980-02-14 Josef Martin Feuerungsbau Gmbh, 8000 Muenchen Rostbelag für mechanisch bewegte stufenförmige Feuerungsroste von Großfeuerungen
FR2609530B1 (fr) * 1987-01-09 1991-01-11 Traitement Indl Residus Urbain Grille de foyer, avec des barreaux transversaux en elements solidarises par leurs faces frontales
ATE165433T1 (de) * 1993-10-21 1998-05-15 Asea Brown Boveri Rost für eine feuerungsanlage
US5551356A (en) * 1995-10-11 1996-09-03 Powerhouse Technology, Inc. Two piece grate clip for use as a power generator maintenance part
DE19648128C2 (de) 1996-11-21 2002-11-07 Alstom Rost für eine Feuerungsanlage
DE19851471A1 (de) * 1998-11-09 2000-05-11 Mitteldeutsche Feuerungs Und U Durchfallarmer Vorschubrostbelag
DE19907944A1 (de) * 1999-02-25 2000-09-07 Saacke Gmbh & Co Kg Rostplatte für einen Vorschubrost
DE102009016523A1 (de) * 2009-04-08 2010-11-25 Baumgarte Boiler Systems Gmbh Roststab für einen Verbrennungsofen und Verfahren zur Herstellung eines Roststabes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53130204U (fr) * 1977-03-25 1978-10-16
EP0621449A1 (fr) * 1993-04-20 1994-10-26 Doikos Investments Ltd Procédé pour la combustion de déchets sur une grille de combustion ainsi qu'une grille de combustion pour la mise en oeuvre du procédé et barreau pour la fabrication d'une telle grille
EP0757206A2 (fr) * 1995-08-02 1997-02-05 Asea Brown Boveri Ag Grille pour un foyer
EP2614304A1 (fr) 2010-09-09 2013-07-17 Tiska GmbH Barreau de grille pour four avec conduits d'airgrate bar for a furnace comprising air ducts
KR20130053519A (ko) * 2011-11-14 2013-05-24 일도바이오테크주식회사 내열성 및 내마모성이 우수한 화격자를 구비한 보일러

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Publication number Publication date
JP7235799B2 (ja) 2023-03-08
US20230392787A1 (en) 2023-12-07
SG10202104656WA (en) 2021-12-30
PL4067744T3 (pl) 2024-04-08
US11906162B2 (en) 2024-02-20
EP3926237C0 (fr) 2023-12-13
EP3926237A2 (fr) 2021-12-22
EP3926237B1 (fr) 2023-12-13
EP4067744C0 (fr) 2023-10-25
JP2021188894A (ja) 2021-12-13
EP4067744B1 (fr) 2023-10-25
EP3926237A3 (fr) 2022-02-23
US20210364164A1 (en) 2021-11-25
DE102020003114A1 (de) 2021-11-25

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