EP4067744B1 - 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
EP4067744B1
EP4067744B1 EP22174061.6A EP22174061A EP4067744B1 EP 4067744 B1 EP4067744 B1 EP 4067744B1 EP 22174061 A EP22174061 A EP 22174061A EP 4067744 B1 EP4067744 B1 EP 4067744B1
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EP
European Patent Office
Prior art keywords
grate bar
grate
bar
running surface
air slots
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.)
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Application number
EP22174061.6A
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German (de)
English (en)
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EP4067744C0 (fr
EP4067744A1 (fr
Inventor
Johannes Ulrich Martin
Max Josef Schönsteiner
Helmut Pupp
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Martin GmbH fuer Umwelt und Energietechnik
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Martin GmbH fuer Umwelt und Energietechnik
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Publication of EP4067744A1 publication Critical patent/EP4067744A1/fr
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Publication of EP4067744C0 publication Critical patent/EP4067744C0/fr
Publication of EP4067744B1 publication Critical patent/EP4067744B1/fr
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Classifications

    • 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
    • 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
    • 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 at least three grate bars arranged one above the other, each with a running surface and a grate bar head, in which an upper grate bar with its grate bar head is arranged to be movable relative to a lower grate bar in such a way that the grate bar head can be moved over a front area and a rear area of the running surface of the grate bar can slide.
  • 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 moves over a front and a rear area of the grate bar The running surface of the grate bar slides.
  • the grate combustion is a solid fuel combustion in which the fuel lies on a grate and burns.
  • the grate is a surface with openings.
  • the openings in the grate are used to supply the air necessary for combustion ("underdraft") and the ash is removed via a purifier.
  • underdraft the air necessary for combustion
  • the ash is removed via a purifier.
  • the movements necessary to stir up the fire occur automatically by moving the grate.
  • a stair grating / bulk grating looks similar to a flat staircase with a gradient of usually 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 step grate is also called a moving grate or a reversing grate (in both cases, however, there is a forward movement for the fuel).
  • Stair gratings are used for coarse and ash-rich fuels that require improved stoking, e.g. E.g. household and commercial waste, biomass, processed waste or, more rarely today, lignite.
  • Stair gratings have a large number of grate bars that can be firmly connected to one another or can be movable relative to one another in order to move the material to be fired on the grate.
  • Grate bars usually have air slots in front of the running surface in a grate bar head.
  • recesses are provided on the side wall of the grate bar or in the form of round openings in the surface, which make it possible to convey air to the underside of the grate bar, which can then escape between the grate bars through the air slot to the combustion bed.
  • round openings can also be provided in the surface of the grate bar, for example.
  • metal parts can get caught in the air slots in the area of the grate bar head and become stuck.
  • the EP 2 614 304 A1 Air slots that 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, when the grate bar is installed there are recesses opposite each other, which together form an air slot. When grate bars lying next to one another move relative to each other, particles that have penetrated into the air slots are cut up and thereby 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 in the operation of a combustion system as a single grate bar, but rather as a grate bar arrangement with several grate bars.
  • An upper grate bar with its grate bar head is arranged to be movable 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 KR 2013 0053519 A describes a grate bar arrangement in which channels supply air to air outlet openings.
  • the arrangement could also be operated with very small movements of the movable grate bars. However, it is not specified how far the movable grate bars are or can be pushed forward during operation.
  • the running surface has air slots in the front and rear areas and the grate bar head is displaceable relative to these air slots in such a way that the opening cross section of all ventilation slots remains constant.
  • Grate bars arranged one above the other are movable 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 defined ventilation of the combustion bed.
  • the object on which the invention is based is achieved with a method for operating a grate bar arrangement with several 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 is moved over one front and a rear area of the running surface of the grate bar slides.
  • the running surface has air slots in the front and rear areas and the grate bar head is moved relative to these air slots in such a way that the opening cross section of all ventilation slots remains constant.
  • This grate bar arrangement does not have to contain all the grate bars of the combustion system. It is sufficient if these grate bars are arranged in an area 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 ventilation 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 prevents particles from penetrating into the area of opposite air slots and being exposed to shear stress that 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 above it, which slides on the running surface, exerts a force on metal particles that get caught in an air slot.
  • the shearing effect therefore essentially does not act between two grate bars lying next to one another, but between a grate bar lying below, in which particles can possibly 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 into an air slot .
  • the passage of the grate bar head of the grate bar arranged above over the air slots arranged in the running surface ensures that the air slot is temporarily in the combustion bed and is temporarily covered by the grate bar above it. This reduces thermal wear on the louver.
  • the passage over the air slot by the grate bar head of the grate bar sliding over it causes the running surface to be cleaned or at least pushed free.
  • the top of the air vent is also cleaned.
  • the fire is fueled by the air supplied. This can result in so-called forge fires, which lead to thermal wear, particularly in the area of the air slots.
  • a particular advantage is that these forge fires are extinguished by the upper grate head moving over them.
  • the air slots are even temporarily covered by the grate rod head that moves over them, so that they can cool down a little. But even after this, the air slots that have been passed over can continue to cool down because the burning material above them has been pushed away.
  • the side wall only has at least one air slot in the area of the tread.
  • the grate bar no longer has any air slots in the area of the grate bar head and in the area of the running surface either one air slot is provided or there are several air slots one behind the other, with two air slots preferably being arranged one behind the other in the area of the running surface.
  • the air slot has a cross-sectional area that widens from the running surface towards the underside.
  • the air slot thus widens from the upper running surface to the underside underneath and this means that particles that get into the air slot from the combustion bed and thus from the running surface can fall down through the air slot if they pass through one above the
  • the upper grate bar guided by the tread can be pressed or cut into the air slot.
  • An air slot is usually designed 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, rear and/or side walls 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, which promotes the cutting of particles.
  • the lower end of the grate bar head lies on the running surface of a grate bar underneath and the sliding surface of the upper grate bar head touches the running surface of the grate bar underneath.
  • This sliding surface can have a clearing bar that is shaped in such a way that it acts with a defined force on particles that lie on the running surface or that have possibly penetrated into the air slots.
  • the clearing bar can have, as a cutting edge, a contact surface that extends 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.
  • 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 or advance material from the surface of the underlying grate bar when the grate bar is advanced over a running surface of an underlying grate bar.
  • the cutting edge can also be arranged at the rear end of the sliding surface in order to use the cutting edge to clean the surface of the underlying running surface over which the sliding surface of the grate bar above is pulled when the upper grate bar is pulled back relative to the running surface of a grate bar located underneath.
  • the grate bar head therefore preferably has two cutting edges, each of which cleans the running surface of a grate bar underneath when the grate bar is advanced and retracted.
  • the sliding surface of the grate bar can also have a clearing bar which, as a pushing edge, has a contact surface which extends at an obtuse angle or an arc with a radius of more than 200 mm and in particular around a circular sector of more than 100 ° to the sliding surface.
  • This pushing 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 there is dirt on the running surface underneath the grate bar head.
  • 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.
  • the grate bar can have a cutting edge or a pushing 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 push bar tailored to the area. and has cut 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, regardless of the aforementioned features.
  • a one-piece bar is a bar that is not cast or welded on, but is a removable part.
  • This bar can be arranged in a positive or non-positive manner on a side wall of the grate bar. For example, it can have a head that is inserted into an elongated hole and secured by twisting.
  • the latch is preferably in two parts and in particular designed as a combination of screw and nut. It is therefore 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 fuel bed.
  • the screw-on nut can be under the tread or outside next to the tread.
  • the screw head is preferably on the outside and the nut is protected under the tread.
  • a special embodiment variant provides that the bolt of the bolt has a head that has an internal polygon.
  • 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 outside the side wall and takes over the function of the latch, while a nut is arranged below the tread and only serves to hold the screw and, if necessary, replace the screw.
  • the head of the bolt performs the function of the known bolt, since this head can engage in a bolt window of an adjacent grate bar. It is advantageous if this head has a round cross section, as no disruptive material can then collect on the bolt. The round surface of the bar no longer forms a plane 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 only has one bar, since the problems arising with the bar are then reduced to one problem area.
  • the grate bar has a locking window into which a bar 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, as there it is not necessary to hold the grate bar down, i.e. to secure it against lifting off.
  • the transom window therefore 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.
  • 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 particularly ductile so that it does not break if the rod breaks or at least holds the fragments of the rod together so that the rod cannot fall down. This means that the grate can continue to operate until the next controlled standstill even if the grate bar is broken, without a broken bar missing from the grate that has fallen into the funnel below.
  • the in Figure 1 The grate bar 1 shown has a grate bar head 2, two side walls 3 and 4 and a running surface 5.
  • the grate bar head 2 lies in a front area of the grate bar 1 and behind it lies 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 of another grate bar pushed onto the running surface 5.
  • 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 ) extended from the running surface 5 to the underside 6 of the grate bar 1.
  • flanks 15, 16 of the air slot 10 are also corresponding - as in Figure 12 shown - arranged at an acute angle 17, 18 to the running surface 5, so that the cross-sectional area 14 of the air slot 10 also expands there from the running surface 5 to the underside 6.
  • the expansion of the cross sections 13 and 14 from the running surface 5 to the underside 6 of the grate bar 1 is also increased by the fact that the recesses 7 and 8 between the flanks 11 and 12 or 15 and 16 are at an acute angle to the running surface 5 are arranged such 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 with air slots 25 to 28 in between, essentially in one plane.
  • the Figure 7 shows how the grate bar heads 29 and 30 of further grate bars 31 and 32 slide along on the running surfaces 5 and 23 of the grate bars 1 and 21.
  • the grate bar heads 29 and 30 move over the air slots 9, 10 and 27 and 28 of the grate bars 1 and 21 in order to push material from the fuel bed lying on the running surfaces 5 and 23 away from the air slots 9, 10 and 27 and 28.
  • the front end of the grate bar head 2, 29, 30 has a special shape, which depends on the purpose and area of use - as in the Figures 8, 9 and 10 shown in cross section - can be formed.
  • the in Figure 8 The grate bar 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 bar 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 in the in Figure 8 shown embodiment in the transition to the sliding surface 35 is designed as a pushing edge 41.
  • This thrust edge 41 has an obtuse angle 42 between the sliding surface 35 and a thrust surface 40.
  • Figure 8 as a thrust edge 41 has an arc with a radius of approximately 6 mm and a circular sector of approximately 105 °, shows Figure 9 on the grate bar head 45 a cut edge 46 - as in Figure 8 - And as a pushing edge 41 in cross section, it is designed 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 a further 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 bars 60, 61, each consisting of a screw 62, 63 and a nut 64, 65.
  • the screw 62 has a screw head 66 with an internal polygon 67 and the screw 63 has a mushroom-shaped design as a 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 is arranged under the underside 69 of the adjacent grate bar ( 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 bars 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 locking window 70, 71 on one side wall 3 and a locking bar 60, 61 on the opposite side wall 4, so that when the grate bars 1, 23 are next to each other, a locking bar 60, 61 is inserted into the locking window 70, 71 of the neighboring one Riegel can intervene.
  • the latch window 70, 71 can accommodate the latch 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 bar 66 and a core bar 80 is cast into the grate bar 1.
  • This cast 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 surrounded 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 when a gap 81 arises during the break and holds the fragments 82, 83 of the grate bar 1 together.
  • FIGS 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 above the in Figure 16 middle position shown in Figure 17 can be pushed to the upper position shown.
  • the grate bars 91 and 93 have a running surface 98, 99 and each have a grate bar head 100, 101 and the grate bar 93 is arranged to be movable as an upper grate bar with its grate bar head 101 relative to the grate bar 91, which serves as a 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 first passed 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 exposed.
  • the air slots 94 and 95 are open, while in the in Figure 16 position shown the air slots 94 and 96 are open.
  • FIG 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 exposed, so that two air slots are 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 always ensure that the opening cross section of all air slots remains constant during the movement of the grate bars.

Claims (11)

  1. Ensemble (90) de barreaux de grille, pourvu d'au moins trois barreaux de grille (91, 92, 93), dotés chacun d'une surface de roulement (98, 99) et d'une tête (100, 101) de barreau de grille, dans lequel par sa tête (101) de barreau de grille, un barreau de grille (93) supérieur est placé de manière mobile par rapport à un barreau de grille (91) inférieur, de telle sorte que la tête (101) de barreau de grille puisse coulisser par-dessus une zone (102) avant et une zone (103) arrière de la surface de roulement (98, 99) du barreau de grille (91), caractérisé en ce que la surface de roulement (98, 99) comporte dans la zone (102, 103) avant et arrière des fentes (94, 95, 96, 97) de passage d'air et la tête (100, 101) de barreau de grille est déplaçable par rapport auxdites fentes (94, 95, 96, 97) de passage d'air, de telle sorte que la section transversale d'ouverture de toutes les fentes (94, 95, 96, 97) de passage d'air reste constante.
  2. Ensemble de barreaux de grille selon la revendication 1, caractérisé en ce que des barreaux de grille (1, 21, 22) placés côte à côte sont mobiles les uns par rapport aux autres.
  3. Ensemble de barreaux de grille selon la revendication 1, caractérisé en ce que des barreaux de grille (1, 23) placés côte à côte sont fixement vissés les uns avec les autres.
  4. Ensemble de barreaux de grille selon l'une quelconque des revendications 1 à 3, chaque barreau de grille (1) étant réalisé avec une tête (2) de barreau de grille, deux parois latérales (3, 4), une surface de roulement (5) derrière la tête (2) de barreau de grille, entre les parois latérales (3, 4) et une face inférieure (6) située entre les parois latérales (3, 4), sous la surface de roulement (5), lors d'une coopération de deux barreaux de grille de conception identique, exactement deux évidements (7, 8) dans une paroi latérale (4) constituant les fentes (9, 10) de passage d'air entre la surface de roulement (5) et la face inférieure (6), les fentes (9, 10) de passage d'air n'étant placées que sur une paroi latérale (4) et pas dans la paroi latérale (3) qui lui est opposée.
  5. Ensemble de barreaux de grille selon la revendication 4, caractérisé en ce que la paroi latérale (4) de chaque barreau de grille (91, 92, 93) ne comporte les fentes (9, 10) de passage d'air que dans la zone de la surface de roulement (5).
  6. Ensemble de barreaux de grille selon l'une quelconque des revendications 4 ou 5, caractérisé en ce que chaque fente (9, 10) de passage d'air comporte une surface (13) de section transversale qui s'élargit de la surface de roulement (5) vers la face inférieure (6).
  7. Ensemble de barreaux de grille selon l'une quelconque des revendications 4 à 6, caractérisé en ce que chaque tête (2, 33) de barreau de grille comporte en tant qu'extrémité (34) inférieure une surface (35) de coulissement pourvue d'une arête tranchante (37) qui comporte un angle (38) aigu ou un arc avec un rayon de moins de 200 mm et notamment avec un secteur de cercle de moins de 80° ente la surface (35) de coulissement et la surface (36) de poussée.
  8. Ensemble de barreaux de grille selon l'une quelconque des revendications 4 à 7, caractérisé en ce que chaque tête (2) de barreau de grille comporte en tant qu'extrémité inférieure une surface (35) de coulissement pourvue d'une arête tranchante (41) qui comporte un angle (42) obtus ou un arc avec un rayon de plus de 200 mm et notamment avec un secteur circulaire de plus de 100° entre la surface (35) de coulissement et la surface (40) de poussée.
  9. Ensemble de barreaux de grille selon l'une quelconque des revendications 4 à 8, caractérisé en ce que chaque barreau de grille (91, 92, 93) comporte un barreau d'âme (80), qui est coulé dans le barreau de grille (1).
  10. Procédé opérationnel d'un ensemble de barreaux de grille, pourvu d'au moins trois barreaux (91, 92, 93) de grille, dotés chacun d'une surface de roulement (98, 99) et d'une tête (100, 101) de barreau de grille, lors duquel l'on déplace un barreau de grille (93) supérieur par sa tête (101) de barreau de grille par rapport à un barreau de grille (91) inférieur, de telle sorte que la tête (101) de barreau de grille coulisse par-dessus une zone (102) avant et une zone (103) arrière de la surface de roulement (98, 99) du barreau de grille (91), caractérisé en ce que la surface de roulement (98, 99) comporte dans la zone (102, 103) avant et arrière des fentes (94, 95, 96, 97) de passage d'air et en ce que l'on déplace la tête (100, 101) de barreau de grille par rapport auxdites fentes (94, 95, 96, 97) de passage d'air de telle sorte que la section transversale d'ouverture de toutes les fentes (94, 95, 96, 97) de passage d'air reste constante.
  11. Procédé selon la revendication 10, caractérisé en ce que du fait du déplacement des barreaux (91, 92, 93) de grille les uns par rapport aux autres, temporairement, toutes les fentes (94, 95, 96, 97) de passage d'air d'un barreau de grille (91) sous-jacent peuvent être recouvertes par le barreau de grille (93) surjacent, temporairement seules les fentes (94, 96) de passage d'air dans la zone (102) avant et temporairement aucune fente (94, 95, 96, 97) de passage d'air ne sont recouvertes par le barreau de grille (93) surjacent, de telle sorte que dans un premier temps, plus ou moins d'air circule à travers le barreau de grille (91) sous-jacent, alors qu'également sur le barreau de grille (93) surjacent, pendant le déplacement du barreau de grille (93), plus ou moins de fentes (94, 95, 96, 97) de passage d'air sont recouvertes par le barreau de grille (92) à son tour surjacent de celui-ci.
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)

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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
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

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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

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US (2) US11906162B2 (fr)
EP (2) EP4067744B1 (fr)
JP (1) JP7235799B2 (fr)
DE (1) DE102020003114A1 (fr)
PL (1) PL4067744T3 (fr)
SG (1) SG10202104656WA (fr)

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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

Family Cites Families (16)

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Publication number Priority date Publication date Assignee Title
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
JPS53130204U (fr) * 1977-03-25 1978-10-16
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
CH684118A5 (de) * 1993-04-20 1994-07-15 Doikos Investments Ltd Verfahren zum Verbrennen von Kehricht auf einem Verbrennungsrost sowie Verbrennungsrost zur Ausübung des Verfahrens und Rostplatte für einen solchen Verbrennungsrost.
ES2115837T3 (es) * 1993-10-21 1998-07-01 Asea Brown Boveri Parrilla para una instalacion de combustion.
DE19528310A1 (de) * 1995-08-02 1997-02-06 Abb Management Ag 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
GB2483479A (en) 2010-09-09 2012-03-14 Tiska Gmbh Furnace grate bars
KR101346218B1 (ko) * 2011-11-14 2014-01-02 일도바이오테크주식회사 내열성 및 내마모성이 우수한 화격자를 구비한 보일러

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US11906162B2 (en) 2024-02-20
JP2021188894A (ja) 2021-12-13
JP7235799B2 (ja) 2023-03-08
EP3926237B1 (fr) 2023-12-13
PL4067744T3 (pl) 2024-04-08
EP4067744C0 (fr) 2023-10-25
DE102020003114A1 (de) 2021-11-25
EP4067744A1 (fr) 2022-10-05
SG10202104656WA (en) 2021-12-30
EP3926237A2 (fr) 2021-12-22
EP3926237C0 (fr) 2023-12-13
US20210364164A1 (en) 2021-11-25
EP3926237A3 (fr) 2022-02-23
US20230392787A1 (en) 2023-12-07

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