EP3994393B1 - Bloc de grillage pour une grille de combustion - Google Patents

Bloc de grillage pour une grille de combustion Download PDF

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Publication number
EP3994393B1
EP3994393B1 EP20716792.5A EP20716792A EP3994393B1 EP 3994393 B1 EP3994393 B1 EP 3994393B1 EP 20716792 A EP20716792 A EP 20716792A EP 3994393 B1 EP3994393 B1 EP 3994393B1
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EP
European Patent Office
Prior art keywords
air supply
grate
block
supply ducts
combustion
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Application number
EP20716792.5A
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German (de)
English (en)
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EP3994393C0 (fr
EP3994393A1 (fr
Inventor
Maurice Henri Waldner
Werner Brennwald
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Hitachi Zosen Innova AG
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Hitachi Zosen Innova AG
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Publication of EP3994393A1 publication Critical patent/EP3994393A1/fr
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Publication of EP3994393B1 publication Critical patent/EP3994393B1/fr
Publication of EP3994393C0 publication Critical patent/EP3994393C0/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
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/002—Incineration of waste; Incinerator constructions; Details, accessories or control therefor characterised by their grates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H3/00—Grates with hollow bars
    • F23H3/02—Grates with hollow bars internally cooled

Definitions

  • the invention relates to a grate block for a combustion grate according to the preamble of claim 1.
  • the invention further relates to a combustion grate comprising at least one such grate block.
  • the invention also relates to the use of said incineration grate for the incineration of waste and a waste incineration plant comprising such an incineration grate.
  • Combustion grates for the large-scale incineration of waste have been known to those skilled in the art for a long time.
  • Such incineration grates may be in the form of shear incineration grates, which include moving parts capable of performing stoking.
  • the material to be burned is conveyed from an inlet-side end of the combustion grate to its outlet-side end and is burned in the process.
  • appropriate air ducts are provided which pass through the incineration grate and via which the air, also called primary air, is introduced.
  • a frequently used incineration grate is the so-called stepped grate. This comprises grate blocks arranged next to one another, each forming a row of grate blocks. The rows of grate blocks are arranged one above the other in a stair-like manner corresponding thrust movement is moved on this support surface.
  • the grate blocks are rotated by about 180° in relation to the feed grates, viewed in the transport direction of the fuel. Therefore, in the case of reverse thrust grates, the front end of the grate block, viewed in the thrust direction, rests on a bearing surface of the previous grate block in each case. In contrast to push-feed grates, the direction of push in reverse-feed grates is opposite to the transport direction resulting from the inclination of the push-back grate.
  • WO 2016/198119 Trained as a step grate combustion grate and a grate block for such a combustion grate is about in WO 2016/198119 described which relates to an air-cooled grate block.
  • the in WO 2016/198119 A1 describes a grate block designed as a cast part block body having an upper wall forming a support surface for the waste to be treated and a front wall forming a pushing surface.
  • a foot is formed which is intended to rest slidably on the bearing surface of an adjacent grate block in the direction of thrust, while air supply openings for introducing air are arranged in the front wall.
  • the grate block includes a top wall having a bearing surface parallel to a longitudinal axis of the grate block A22706WOEP/27.07.2022 forms along which the material to be burned is to be conveyed. Viewed in a thrust direction, the foremost end of the bearing surface forms an edge over which the bearing surface slopes into a thrust surface formed by a front wall.
  • the front wall has first air supply openings, which are formed by first air supply channels running at right angles to the thrust surface, viewed in longitudinal section, for supplying air to the combustion grate.
  • the upper wall has further air supply ducts, aligned obliquely to the direction of the first air supply ducts, for cooling the upper wall.
  • U.S. 1,409,205 discloses a grate block for an incineration grate.
  • the grate block includes an air duct running parallel to a longitudinal axis of the grate block, the air inlet opening and air outlet opening of which are arranged on an underside of the grate block.
  • the grate block includes a front wall in which a plurality of air outlet ducts are provided in fluid communication with the air duct, and a top wall defining a bearing surface parallel to the longitudinal axis.
  • the top wall is impermeable to air and therefore has no air channels.
  • the abrasion is particularly high in the area of the foremost end of the support surface, where the material to be burned is thrown from the support surface of the grate block via a corresponding discharge edge onto the support surface of the subsequent grate block. This can in particular also lead to erosion of the air supply openings arranged under the edge, which can negatively affect the controlled air supply to the combustion bed lying on the combustion grate.
  • grate blocks are exposed to very high thermal loads, mainly because of the high temperatures during combustion or in the combustion chamber. During normal operation of the combustion grate, this thermal load is particularly high in the area of the supporting surface, although the combustion material lying on the grate block has an insulating effect to a certain degree.
  • the problem to be solved according to the invention is therefore to provide a grate block as mentioned at the outset, which has a long service life and in which the erosion of the bearing surface, in particular the erosion of the foremost end of the grate block, is minimized.
  • the present invention thus relates to a grate block for a combustion grate, in which successive grate blocks are arranged in steps one above the other and are designed in such a way that the material to be burned is shifted and conveyed during combustion by means of thrust movements performed relative to one another, i.e. by means of relative movements between the grate blocks.
  • combustion grates are also referred to as stepped grates.
  • the grate block comprises a block body, preferably designed as a cast part.
  • the block body is designed essentially in the form of an elongate cuboid with a longitudinal axis L.
  • the block body comprises an upper wall, which forms a support surface running parallel to the longitudinal axis L, along which the material to be burned is to be conveyed and which defines a side of the material to be burned of the upper wall.
  • the foremost end of the bearing surface forms an edge over which the bearing surface falls into a thrust surface formed by a front wall.
  • the rim thus forms a transition between the top wall and the front wall.
  • the side of the top wall remote from the bearing surface and the side of the front wall remote from the thrust surface define a cooling air side of the block body.
  • the pushing direction S describes the direction in which the material to be burned is pushed by the pushing surface of the grate block.
  • the thrust direction S is parallel to the longitudinal axis L.
  • the transport direction T denotes the direction of movement of the material to be burned from an inlet to an outlet of the combustion grate.
  • the transport direction T results mainly from the inclination of the combustion grate.
  • the front wall has first air supply openings, which are formed by first air supply channels running at right angles or at an angle to the thrust surface, viewed in longitudinal section, for supplying air to the combustion grate.
  • air includes the so-called primary air, which is supplied to the incineration grate or the combustion bed on the incineration grate.
  • the primary air primarily contributes to the combustion of the fuel, but also to the cooling of the grate blocks of the combustion grate.
  • the front wall is designed in its lowest part in the form of a foot intended to rest on the bearing surface of an adjacent grate block in the direction of thrust.
  • the first air supply channels run at an angle ⁇ to the area of the thrust surface directly adjacent to the respective first air supply openings, ⁇ being in a range from 90° to 135°, preferably from 95° to 125°, particularly preferably from 100° to 120°, and most preferably from 105° to 115°.
  • the angle ⁇ is measured counterclockwise between the longitudinal axis of the respective first air supply ducts and the thrust surface. This ensures optimum air supply to the incineration grate or to the combustion bed on the incineration grate, which contributes to a very high degree of combustion of the material to be burned.
  • the section of the first air supply ducts that is relevant for determining the angle ⁇ is the section directly in front of it the exit of the respective first air supply duct from the front wall.
  • the foot thus rests on the grate block following in the transport direction T of the material to be burned or on its contact surface.
  • the grate block according to the invention is intended for a reverse thrust grate; In this case, the foot rests on the preceding grate block in the transport direction T of the material to be burned, or on its contact surface.
  • At least the lower bearing edge of the thrust surface is arranged in a plane E running essentially at right angles to the longitudinal axis L. It is conceivable in this regard that a surface arranged in the lowermost area of the front wall, the lower end of which is formed by the lower support edge, is arranged in the plane E. However, it is also conceivable that only the line described by the lower bearing edge is arranged in plane E.
  • further air supply ducts are formed in the upper wall and in the front wall and are aligned obliquely to the direction of the first air supply ducts for cooling the upper wall and the front wall, with the further air supply ducts forming further air supply openings in the upper wall, i.e. in the support surface, and in the front wall, i.e. in the thrust surface.
  • the top wall and the front wall are thickened in the area where they meet, viewed in longitudinal section, as a wall thickening.
  • the wall thickening is formed in such a way that the edge, viewed in the thrust direction S, is offset forward with respect to the plane E.
  • that area of the thrust surface in which the first air supply openings and optionally further air supply openings are arranged is arranged in a plane which is set back along the longitudinal axis L and, viewed in the thrust direction S, with respect to the edge. Since the rim, viewed along the longitudinal axis L and in the direction of thrust S, is offset in relation to the plane E, the first air supply openings and optionally the further air supply openings, which are formed below the rim, are at least partially protected. This arrangement has the additional advantage that the air can escape more easily through the first air supply openings and the further air supply openings. Better cooling of the front wall is thus achieved.
  • the wall thickening viewed in longitudinal section, is arched, for example in the form of a bulge.
  • the curved design of the wall thickening ensures that the material to be burned over the grate block can be transported unhindered, ie without being blocked by angular bumps.
  • top or front wall thickening of the top or front wall is to be understood in such a way that the top or front wall has a thicker wall in the area in which it is thickened than in the area directly surrounding the thickening.
  • the thickened wall is able to absorb additional heat during operation of the grate block due to the additional amount of material forming the thickened wall.
  • the thickened wall consequently enables the grate block to have a longer service life, because the thickened upper or front wall resists erosion longer.
  • the erosion of the wall thickening can increase due to the strong thermal load.
  • a further optimization of the grate block consists in optimizing the cooling of the wall thickening.
  • the further air supply channels are arranged in the thickened wall, i.e. they run through the thickened wall. This arrangement of the further air supply ducts and the corresponding further air supply openings ensures better cooling of the wall thickening by air and thus reduces its erosion.
  • the further air supply ducts only in the top wall, ie above the edge of the top wall. Since the erosion by abrasion takes place mainly on the bearing surface, the thickening of the wall is advantageously formed predominantly on the top wall in that area where the top wall and the front wall meet. So this allows Arrangement of the other air supply channels an optimized cooling of the wall thickening.
  • the further air supply ducts run at an angle ⁇ to the longitudinal axis L of the block body, viewed in longitudinal section, the angle ⁇ being from 10° to 60°.
  • the angle ⁇ is measured counterclockwise with respect to the longitudinal axis L. Due to the fact that the further air supply channels run obliquely to the longitudinal axis L of the block body, they are longer than if they ran parallel to the longitudinal axis L. Consequently, the air flowing through the further air supply ducts can bring about efficient cooling.
  • the angle ⁇ is preferably from 15° to 50°. In this case, the angle ⁇ is selected in such a way that the slag resulting from the combustion of the material to be burned falls off through the other air supply ducts and causes blockages as little as possible. This ensures reliable cooling of the grate block.
  • a first group of the additional air supply channels is formed in a first plane running at a first angle ⁇ 1 to the bearing surface of the block body. Furthermore, a second group of the further air supply channels is formed in a second plane running at a second angle ⁇ 2 to the bearing surface of the block body.
  • the first angle ⁇ 1 is from 10° to 35°, preferably from 10° to 20°
  • the second angle ⁇ 2 is from 35° to 60°, preferably from 40° to 50°.
  • the further air supply ducts of the first group and the further air supply ducts of the second group are designed parallel to one another.
  • the further air supply ducts of the first group and the further air supply ducts of the second group are preferably formed parallel to a longitudinal sectional plane P which includes the longitudinal axis L and is perpendicular to the support surface.
  • the further air supply ducts in the first level and/or in the second level are distributed at equal distances from one another over the width of the grate block. This ensures that the air flowing through the additional air supply ducts brings about a homogeneous cooling around these planes.
  • the distribution of the stresses caused by the heat distribution in the operation of the grate block is also distributed homogeneously in the first and the second level and the formation of cracks in the grate block across its width is minimized. This leads to a longer service life of the grate block.
  • a further air supply duct possibly a further air supply duct from the first group and a further air supply duct from the second group, and a first air supply duct are arranged in the same plane, which runs parallel to the longitudinal sectional plane P.
  • This arrangement of the first and further air supply ducts ensures that the stresses during operation of the grate block, in Viewed longitudinally, are also distributed homogeneously. Thus, the formation of cracks can be minimized.
  • the additional air supply ducts are distributed symmetrically to a longitudinal plane of symmetry of the grate block running at right angles to the support surface. This arrangement has the further advantage that the production of the further air supply channels is simplified.
  • the number of air supply ducts and additional air supply ducts is calculated in proportion to the width of the grate block and the size of the wall thickening in order to achieve optimized cooling of the grate block.
  • the further air supply ducts have a constant cross-sectional area essentially over their length, which is in particular 40 mm 2 to 100 mm 2 .
  • the diameter is selected in such a way that the slag resulting from the combustion of the material to be burned falls through the other air supply ducts and causes a blockage as little as possible. Reliable cooling of the grate block can thus be guaranteed.
  • the cross-sectional area is preferably 80 mm2 in order to achieve an optimal result.
  • the further air supply ducts are designed to widen continuously over their length from the firing side to the cooling air side, the cross-sectional area of the further air supply ducts on the firing material side and the cross-sectional area of the further air supply ducts on the cooling air side being in a ratio of 1:1.2 to 1:2.5, preferably 1:2.25.
  • the cross-sectional area of the other air supply channels on the firing side is in the support surface or in the Measured thrust area and corresponds to the cross-sectional area of the other air supply openings defined above.
  • the cross-sectional area of the further air supply ducts is measured at their end lying on the cooling air side.
  • This design of the additional air supply ducts enables the combustion residues that have entered the additional air supply ducts to be removed easily.
  • the combustion residues are pushed further in the direction of the cooling air side into the further air supply ducts by the material to be burned on the grate block and are released because of the widening of the further air supply ducts. A blockage of the air supply can thus be avoided.
  • the present invention also relates to a combustion grate comprising at least one of the grate blocks described above.
  • the grate block 10 comprises a block body 12 designed as a cast part, which is essentially in the form of an elongate cuboid with a longitudinal axis L.
  • the block body 12 comprises an upper wall 14 which forms a support surface 16 running parallel to the longitudinal axis L, along which the material to be burned is to be conveyed and which defines a side of the material to be burned of the top wall 14 .
  • the foremost end of the bearing surface 16 viewed in the thrust direction S forms an edge 19 over which the bearing surface 16 falls into a thrust surface 22 formed by a front wall 20 .
  • the side of the top wall 14 facing away from the bearing surface and the side of the front wall 20 facing away from the thrust surface 22 define a cooling air side of the block body 12.
  • the bearing surface has a first bearing surface area 16a and a second bearing surface area 16b, but the first bearing surface area 16a is offset upwards relative to the second bearing surface area 16b and is connected to it via a beveled transition 17.
  • the block body 12 On the side opposite the front wall 20, the block body 12 has a rear wall 24 which is equipped with at least one hook 26 with which the grate block 10 can be hung in a block holding tube.
  • a central web 29 is also arranged on the underside of the grate block 10 facing away from the bearing surface 16 .
  • the grate block 10 is delimited laterally by a side wall 28a, 28b extending in the longitudinal direction L.
  • the grate block 10 rests on a grate block that follows in the thrust direction S.
  • the lowest portion of the front wall is 20 in Form of a block 34, which is intended to rest on the bearing surface of an adjacent grate block in the thrust direction S.
  • the lowermost region, including a lower bearing edge 23 of the thrust surface formed therethrough, is arranged in a plane E running essentially at right angles to the longitudinal axis L.
  • the grate block 10 is thickened in the area where the top wall 14 and the front wall 20 meet.
  • the wall thickening 40 is arched on the combustion material side of the upper wall 14 when viewed in longitudinal section.
  • the edge 19 formed by the wall thickening 40 is in the embodiment shown along the longitudinal axis L and viewed in the thrust direction S with respect to the plane E offset forward, the distance D between the edge 19 and the plane E being approximately 25 mm.
  • the second bearing surface area 16b initially runs essentially in one plane and then descends in a curved area, viewed in the thrust direction S, extending to the foremost end of the bearing surface 16 .
  • the edge 19 formed by the foremost end of the bearing surface 16 is presently located below the plane of the second bearing surface region 16b. Above the edge 19 begins the thrust surface 22, which first runs set back with respect to the edge 19 and then extends into the plane E.
  • the front wall 20 has two first air supply openings 25 which are each formed by a first air supply channel 27 running through the front wall 20 are.
  • the first air supply channels 27 open into an undercut of the front wall 20 formed by the wall thickening 40 and the plane E.
  • the first air supply openings 25 are located in 1 below the wall thickening 40 and are not visible. Primary air is supplied to the combustion grate or the combustion bed on the combustion grate through the first air supply ducts 27 .
  • first air supply openings 25 are set back along the longitudinal axis L and viewed in the thrust direction S with respect to the edge 19, in the specific embodiment shown by a distance d of approximately 12 mm.
  • the first air supply ducts 27, viewed in longitudinal section, run at an angle ⁇ of approximately 110° to the thrust surface 22 in the area directly adjacent to the respective air supply opening.
  • the grate block 12 comprises further air supply ducts 38 for cooling the upper wall 14, which run through the upper wall 14, are arranged in the wall thickening 40 and are aligned obliquely to the direction of the first air supply ducts 27, with the further air supply ducts 38 forming further air supply openings 35 in the wall thickening 40.
  • a first group of two further air supply channels 38 is formed in a first plane G1 running at a first angle ⁇ 1 to the support surface 16 . Furthermore, a second group of two further air supply channels 38 is formed in a second plane G2 running at a second angle ⁇ 2 to the support surface 16 .
  • the first angle ⁇ 1 is 15° and the second angle ⁇ 2 is 45°. of clarity because of this, the angles ⁇ 1 and ⁇ 2 are in 2 shown with respect to the longitudinal axis L, which runs parallel to the bearing surface 16 .
  • the two first air supply ducts 27 and the two groups of two further air supply ducts 38 are shown, each distributed in pairs symmetrically to a longitudinal plane of symmetry P of the grate block 12 running at right angles to the support surface.
  • the two first air supply ducts 27 and the two groups of two further air supply ducts 38 are designed to widen continuously, so that combustion residues that have entered the first or the further air supply ducts 27 or 38 can be discharged more easily and a blockage of the air supply can thus be avoided.
  • the diameter of the first and the further air supply channels 27 and 38 is 15 mm at the end facing the interior of the grate block 10 and 10 mm at the other end.
  • the grate blocks 10 are moved relative to each other by means of the block support tubes.
  • the block holding tubes are either attached to stationary brackets or to brackets that are arranged in a moving grate carriage. It is driven by hydraulic cylinders, which move the grate wagons back and forth on rollers on corresponding running surfaces.
  • the resulting relative movement causes the foot 34 of a first grate block 10 to move forward and backward over the support surface 16 of the following grate block 10 pushed back, the material to be burned being conveyed over the support surface 16 before it is thrown over the edge 19 onto the support surface 16 of the following grate block 10 .

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

Claims (13)

  1. Bloc de grille (10) pour une grille de combustion, dans laquelle des blocs de grille successifs sont disposés l'un au-dessus de l'autre à la manière d'un escalier et sont configurés de manière à ce que le matériau combustible soit déplacé et transporté pendant la combustion au moyen de mouvements de poussée effectués relativement l'un par rapport à l'autre, le bloc de grille (10) comprenant un corps de bloc (12) qui a une paroi supérieure (14) et définit un axe longitudinal L, la paroi supérieure (14) formant une face de support (16) le long de laquelle le matériau combustible doit être transporté et l'extrémité avant de celle-ci, lorsqu'elle est vue dans une direction de poussée S étant alignée sensiblement parallèlement à l'axe longitudinal L, formant un bord (19) duquel la face de support (16) descend en tant qu'une face de poussée (22) réalisée par une paroi frontale (20), la paroi frontale (20) présentant des premières ouvertures d'alimentation en air (25) qui sont chacune formées par un premier conduit d'alimentation en air (27) pour l'alimentation en air de la grille de combustion qui, vue en coupe longitudinale, s'étend orthogonalement ou obliquement à la face de poussée (22), et présente un bord de support inférieur (23) qui est disposé dans un plan E s'étendant sensiblement orthogonalement à l'axe longitudinal L et qui est destiné à entrer en contact avec la face de support d'un bloc de grille adjacent dans la direction de poussée S, le bloc de grille (10) possédant des conduits d'alimentation en air supplémentaires (71) pour refroidir la paroi supérieure (14) qui s'étendent à travers la paroi supérieure (14) et sont alignés obliquement par rapport à la direction des premiers conduits d'alimentation en air, caractérisé par des conduits d'alimentation en air supplémentaires (38) pour refroidir la paroi frontale (20) qui s'étendent à travers la paroi frontale (20) et sont alignés obliquement par rapport à la direction des premiers conduits d'alimentation en air.
  2. Bloc de grille selon la revendication 1, caractérisé en ce que la paroi supérieure (14) et la paroi frontale (20), dans la zone où ladite paroi supérieure (14) et ladite paroi frontale (20) se rencontrent, lorsqu'elles sont vues dans la section longitudinale, sont configurées sous forme épaissie en tant qu'épaississement de paroi (40), et en ce que le bord (19), lorsqu'il est vu dans la direction de poussée S, est décalé vers l'avant par rapport au plan E.
  3. Bloc de grille selon la revendication 2, caractérisé en ce que les conduits d'alimentation en air supplémentaires (38) sont disposés dans l'épaississement de la paroi (40).
  4. Bloc de grille selon l'une des revendications 1 à 3, caractérisé en ce que les conduits d'alimentation en air supplémentaires (38), vus en coupe longitudinale, forment un angle β par rapport à l'axe longitudinal L du corps du bloc, où β est compris entre 10° et 60°, de préférence entre 15° et 50°.
  5. Bloc de grille selon l'une des revendications 1 à 4, caractérisé en ce qu'un premier groupe de conduits d'alimentation en air supplémentaires (38) est configuré dans un premier plan qui s'étend à un premier angle β1 par rapport à la face de support du corps de bloc, et qu'un deuxième groupe de conduits d'alimentation en air supplémentaires (38) est configuré dans un deuxième plan qui s'étend selon un deuxième angle β2 par rapport à la face de support du corps de bloc, où β1 est compris entre 10° et 35°, de préférence entre 10° et 20°, et β2 est compris entre 35° et 60°, de préférence entre 40° et 50°.
  6. Bloc de grille selon la revendication 5, caractérisé en ce que les conduits d'alimentation en air supplémentaires (38) du premier groupe sont configurés pour être parallèles entre eux, de préférence parallèles à un plan de coupe longitudinal P orthogonal à la face de support (16), et les conduits d'alimentation en air supplémentaires (38) du deuxième groupe sont configurés pour être parallèles entre eux, de préférence parallèles au plan de coupe longitudinal P.
  7. Bloc de grille selon la revendication 5 ou 6, caractérisé en ce que les conduits d'alimentation en air supplémentaires (38) dans le premier plan et/ou dans le deuxième plan sont répartis de manière à être au moins approximativement uniformément espacés les uns des autres sur la largeur du bloc de grille.
  8. Bloc de grille selon l'une des revendications 1 à 7, caractérisé en ce que les conduits d'alimentation en air supplémentaires (38) sont répartis symétriquement par rapport à un plan de symétrie longitudinal du bloc de grille (10) qui s'étend orthogonalement à la face de support (16).
  9. Bloc de grille selon l'une des revendications 1 à 8, caractérisé en ce que les conduits d'alimentation en air supplémentaires (38), sensiblement sur toute leur longueur, ont une surface de section transversale constante comprise entre 40 mm2 et 100 mm2, de préférence 80 mm2.
  10. Bloc de grille selon l'une des revendications 1 à 8, caractérisé en ce que les conduits d'alimentation en air supplémentaires (38) sur toute leur longueur sont configurés de manière à s'élargir continuellement du côté du matériau combustible vers le côté de l'air de refroidissement, la section des conduits d'alimentation en air supplémentaires (38) du côté du matériau combustible et la section des conduits d'alimentation en air supplémentaires du côté de l'air de refroidissement étant dans un rapport de 1 : 1,2 à 1 : 2,5, de préférence de 1 : 2,25.
  11. Grille de combustion comprenant au moins un bloc de grille (10) selon l'une des revendications 1 à 10.
  12. Utilisation d'une grille de combustion selon la revendication 11 pour l'incinération de déchets.
  13. Installation d'incinération de déchets comprenant une grille de combustion.
EP20716792.5A 2019-07-05 2020-04-06 Bloc de grillage pour une grille de combustion Active EP3994393B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19184559 2019-07-05
PCT/EP2020/059704 WO2021004664A1 (fr) 2019-07-05 2020-04-06 Bloc de grille pour une grille de combustion

Publications (3)

Publication Number Publication Date
EP3994393A1 EP3994393A1 (fr) 2022-05-11
EP3994393B1 true EP3994393B1 (fr) 2023-07-26
EP3994393C0 EP3994393C0 (fr) 2023-07-26

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EP20716792.5A Active EP3994393B1 (fr) 2019-07-05 2020-04-06 Bloc de grillage pour une grille de combustion

Country Status (10)

Country Link
US (1) US20220260252A1 (fr)
EP (1) EP3994393B1 (fr)
JP (1) JP2022538488A (fr)
KR (1) KR20220025090A (fr)
CN (1) CN114144618B (fr)
AU (1) AU2020310397A1 (fr)
BR (1) BR112021025942A2 (fr)
CA (1) CA3147854A1 (fr)
MX (1) MX2022000025A (fr)
WO (1) WO2021004664A1 (fr)

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WO2021004664A1 (fr) 2021-01-14
KR20220025090A (ko) 2022-03-03
CA3147854A1 (fr) 2021-01-14
BR112021025942A2 (pt) 2022-02-22
AU2020310397A1 (en) 2021-12-23
EP3994393C0 (fr) 2023-07-26
JP2022538488A (ja) 2022-09-02
MX2022000025A (es) 2022-05-18
CN114144618B (zh) 2024-03-08
EP3994393A1 (fr) 2022-05-11
US20220260252A1 (en) 2022-08-18

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