EP4477948B1 - Bloc de grille refroidi par eau pour un incinérateur - Google Patents

Bloc de grille refroidi par eau pour un incinérateur

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Publication number
EP4477948B1
EP4477948B1 EP24210864.5A EP24210864A EP4477948B1 EP 4477948 B1 EP4477948 B1 EP 4477948B1 EP 24210864 A EP24210864 A EP 24210864A EP 4477948 B1 EP4477948 B1 EP 4477948B1
Authority
EP
European Patent Office
Prior art keywords
cavity
grate
fluid
wall
block according
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.)
Active
Application number
EP24210864.5A
Other languages
German (de)
English (en)
Other versions
EP4477948A3 (fr
EP4477948A2 (fr
Inventor
Maurice Henri Waldner
Werner Brennwald
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.)
Kanadevia Inova AG
Original Assignee
Kanadevia Inova AG
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 Kanadevia Inova AG filed Critical Kanadevia Inova AG
Priority to EP25224325.8A priority Critical patent/EP4692644A2/fr
Publication of EP4477948A2 publication Critical patent/EP4477948A2/fr
Publication of EP4477948A3 publication Critical patent/EP4477948A3/fr
Application granted granted Critical
Publication of EP4477948B1 publication Critical patent/EP4477948B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F23G5/442—Waste feed arrangements
    • F23G5/444—Waste feed arrangements for solid waste
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H11/00—Travelling-grates
    • F23H11/12—Travelling-grates inclined travelling grates; Stepped travelling grates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H7/00—Inclined or stepped grates
    • F23H7/12—Inclined or stepped grates with movable bars disposed transversely to direction of fuel feeding
    • F23H7/14—Inclined or stepped grates with movable bars disposed transversely to direction of fuel feeding reciprocating along their axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2203/00—Furnace arrangements
    • F23G2203/101—Furnace arrangements with stepped or inclined grate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H2700/00—Grates characterised by special features or applications
    • F23H2700/009—Grates specially adapted for incinerators
    • 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
    • F23H2900/03021—Liquid cooled grates

Definitions

  • the grate blocks are subjected to very high thermal stress.
  • this thermal stress is particularly high in the area of the contact surface, even though the material being combusted on the grate block provides some insulation. Temperature spikes and the associated stress spikes occur especially when the material being combusted is unevenly distributed on the grate, resulting in only a thin insulating layer in some areas, or when this insulating layer is completely absent. This thermal stress promotes erosion through abrasion and chemical reactions occurring on the contact surface, which further damage it. Ultimately, all of this leads to a reduction in the service life of the grate block.
  • the grate bars are normally cooled from below, i.e., on the side of the combustion grate opposite the combustion process, using a coolant or cooling fluid.
  • Water or air is typically used as the coolant, which is why grate blocks are often referred to as air-cooled or water-cooled.
  • the type of cooling or the Coolant supply is the subject of numerous patent applications and patents:
  • the EP 1 760 400 B1 The image reveals a water-cooled grate element made of cast steel with deflectors that form meandering water channels.
  • the disadvantage of this water flow design is that the cooling performance is impaired directly above the deflectors, as the coolant has no contact with the upper wall there and therefore cannot dissipate the heat generated by combustion. Consequently, a combustion surface with so-called "heat hotspots" develops at these points.
  • the invention relates to a cooled grate block as part of a grate for a plant for the thermal treatment of waste.
  • the grate blocks are typically arranged one above the other in a stepped fashion and are designed such that they rearrange and convey the material to be combusted during combustion by means of relative shear movements.
  • the grate block according to the invention comprises a block body formed as a casting with an upper wall.
  • the upper wall forms an outer support surface for the waste to be treated, which runs at least partially parallel to a longitudinal axis L of the block body.
  • the grate block according to the invention comprises a planar cavity arranged directly below the support surface for receiving a cooling fluid.
  • the at least one deflection element is located in the cavity in a rear area of the back wall.
  • grate blocks arranged one above the other in a stair-like manner are defined as grate blocks on a grate, which are arranged like the steps of an ascending or descending staircase.
  • relatively executable shear movements refers to shear movements that can be performed parallel to the longitudinal axis of the grate, which consists of grate blocks. In the case of a stepped grate, the direction of movement is therefore parallel to the incline or slope of the grate.
  • the "longitudinal axis of the grate block” refers to an axis that runs parallel to the axis of the stepped surface.
  • the grate extends from the front wall to the rear wall of the grate block, thus running parallel to the direction of the waste being processed. If the grate block is oriented so that its longitudinal axis and a transverse axis perpendicular to it are located in the horizontal plane, then the front wall is preferably located at least approximately in the vertical plane.
  • a “support surface” is understood to be a surface located on the outer top side, i.e., on the opposite side of the cavity, on which the waste (fuel material) intended for thermal treatment rests. As mentioned at the outset, this support surface is known to be exposed to increased thermal stress in incineration plants and is susceptible to erosion and the build-up of combustion products.
  • a fluid flow or cooling fluid flow is defined as a flow of cooling fluid - preferably water - which is directed through the cavity from the fluid supply line to the fluid discharge line or vice versa.
  • the term "planar cavity” means that the cavity has a shape whose horizontal dimensions (length and width) are greater than its vertical dimensions (height).
  • the cavity has a cuboid shape, at least in sections, with the largest area parallel to the support surface.
  • no pipes are provided in the planar cavity. which transport the fluid from the fluid supply line to the fluid discharge line.
  • fluid supply lines and fluid discharge lines are defined as lines suitable for directing cooling fluid into and out of the cavity. It should be explicitly noted that the fluid flow can occur in both directions, meaning it can be alternately supplied and discharged through both lines.
  • front side or “front face” means the side in the area of the front wall.
  • a distribution element is defined as an obstruction designed to restrict and/or change the direction of the flow, thereby distributing the incoming cooling fluid.
  • the distribution of the cooling fluid preferably occurs before or in the region where the cooling fluid enters the planar cavity.
  • the distribution element can have various shapes, as will be explained in more detail below.
  • the grate block according to the invention has the advantage over the prior art that the cooling fluid flow entering the cavity can be distributed evenly across the width of the cavity thanks to the distribution element. This reduces or even completely prevents the formation of cooling fluid turbulence and foaming, resulting in increased cooling performance of the grate block.
  • the increased cooling performance brings the The advantage is that the thermal stress and wear on the grate blocks are reduced, and fewer combustion residues are baked onto the grate blocks, thus requiring less frequent cleaning and maintenance. Ultimately, this leads to less maintenance work and therefore more economically viable operation of the combustion plant.
  • the flat cavity usually does not contain any pipes that could impair the even distribution of the cooling fluid in the cavity and thus reduce the cooling performance.
  • the distribution element extends at least partially along a lateral axis that runs at least approximately parallel to the front wall. This enables a regular distribution of the cooling fluid across the width of the planar cavity (or a compartment of the planar cavity).
  • the planar cavity is connected to an end-face chamber.
  • This chamber preferably extends substantially parallel to—and preferably over at least half the length of—the front wall. It is preferably designed such that the cooling fluid flows into and out of the planar cavity through the chamber.
  • the planar cavity and the chamber are preferably connected to each other via several inflow openings. This This preferably enables a pre-distribution of the cooling fluid before it hits the distribution element and thus also contributes to a better distribution of the cooling fluid in the planar cavity.
  • the injection of cooling fluid through the chamber into the cavity also allows the front wall, often referred to as the nose, to be cooled as well.
  • the front wall is usually exposed to a slightly lower thermal load than the contact surface, its cooling helps to prevent the build-up of fly ash or other combustion products.
  • the planar cavity has a partition extending from the bottom to the upper wall. This partition preferably extends from the front wall towards the rear wall of the cavity and preferably forms a passage in the region of the rear wall, so that the cavity is divided into two fluid-conducting compartments.
  • the fluid flow preferentially flows through a first compartment of the cavity, which extends from the front wall along the longitudinal axis over a desired length of the cavity.
  • the fluid flow is guided through the passage, where it is deflected and flows back in the opposite direction, i.e., towards the front wall, through a second compartment adjacent to the first.
  • the partition the rear areas of the The cavity is adequately supplied with fresh cooling fluid, ensuring cooling performance even in these areas.
  • the grate block according to the invention preferably includes at least one vent opening for venting the cavity or compartments to expel any such air inclusions from the grate block. Simultaneously, venting the cavity or compartments prevents air from being carried along with the cooling fluid over the entire length of the fluid flow.
  • the vent opening is preferably formed in the partition wall, preferably in the area of the front wall, in order to allow ventilation of the cavity or the compartments created by the partition wall.
  • the vent opening has a diameter of 2–12 mm, particularly preferably 4–5 mm. This size This allows the grate block, including the vent opening, to be produced using known casting methods.
  • the partition wall runs at least approximately parallel to one of the side walls and is preferably arranged centrally within the cavity.
  • the partition wall thus divides the planar cavity into two compartments of at least approximately equal size. This ensures that the fluid flow is uniform through the cavity or through the compartments and is not accelerated or decelerated due to a change in the cavity or compartment geometry. This prevents turbulence from forming due to an acceleration or deceleration of the fluid flow within the cavity or the compartments.
  • the fluid supply line and the fluid drain line are connected to the flat cavity in the area of the front wall. Connecting the fluid supply line and the fluid drain line to the cavity in the front or end face area frees up as much space as possible below the block body.
  • both the fluid supply line and the fluid outlet line have an inner diameter of 20–32 mm, more preferably 22–30 mm, and most preferably 26–28 mm.
  • Line diameters of this size have the advantage that, for the usual cooling fluid circulation rate, a flow velocity is achieved at which the flow automatically vents the entire piping system of the grate block, including the cavity.
  • the distribution element can extend across the entire width of the cavity or only across parts of it.
  • the distribution element is designed to allow only a restricted flow of cooling fluid past or over the distribution element, in order to enable uniform distribution of the cooling fluid within the cavity. This uniform distribution of the cooling fluid flow enables increased cooling performance, as turbulence of the cooling fluid and foaming are reduced or prevented.
  • the cooling fluid flowing in through the fluid supply line first encounters the distribution element, thereby calming turbulence.
  • the water can preferably flow through openings in the distribution element (if present), over or around it.
  • the distribution element is designed in the form of a baffle plate or a deflector plate. Further preferred embodiments include a distribution element designed as a boss, baffle, perforated plate, or crossbeam. The longitudinal axis of the distribution element preferably runs approximately parallel to the front wall.
  • the distribution element is shaped like a hump, this means that the distribution element has a hill- or ramp-shaped cross-section in the width direction, i.e., parallel to the front wall.
  • the cooling fluid thus flows perpendicular to the front wall and opposite to the direction of movement of the combustion material over the distribution element.
  • the distribution element consists of a plate which has a front surface facing the fluid flow with at least one opening through which the fluid flow is directed.
  • the distribution element forms a wall or a beam over or under which the cooling fluid can flow.
  • the beam extends along the entire width of the grate block and at least approximately parallel to the front wall.
  • the distribution element ensures a uniform distribution of the cooling fluid flow across as much of the cavity's width as possible, and, if the cavity has compartments, across the width of those compartments.
  • This uniform distribution of the cooling fluid flow allows for increased cooling performance, as turbulence of the cooling fluid and foaming can be reduced or prevented.
  • the distribution typically occurs at the point where the cooling fluid enters the cavity and can be achieved using a simple distribution element.
  • the distribution element can preferably be cast in place or subsequently installed as a separate component.
  • the distribution element preferably extends in the width direction at least over the width of an opening cross-section of the fluid supply line.
  • the distribution element is connected to the base and/or to the upper wall. If the distribution element is designed as a crossbeam, it preferably forms a slot-like fluid passage opening with the upper wall and/or the base.
  • the fluid passage opening is particularly preferably located between an upper edge of the crossbeam and the upper wall.
  • the fluid passage opening preferably has a clear width of 1 to 15 mm, more preferably 2 to 10 mm, and more preferably 3 to 6 mm.
  • the above-described embodiment of the distribution element as a crossbeam with the above-mentioned properties has proven to be particularly effective.
  • the distribution element is located in the outlet region of the at least one inlet pipe. It has been observed that turbulence in the cooling fluid occurs particularly frequently at the point of entry into the cavity – i.e., at the outlet of the inlet pipe. Since the thermal stress is particularly high in the front region of the grate block, a reduction in cooling performance due to air inclusions has a doubly negative effect there. By arranging the distribution element in the outlet region of the inlet pipe, rapid stabilization is achieved upon entry of the cooling fluid into the cavity.
  • the distribution element comprises a bump-, ramp-, or hill-like obstacle that restricts or deflects the flow of the cooling fluid from the fluid supply line.
  • the distribution element preferably has a height of 5–15 mm, particularly preferably 8–12 mm, and most preferably 10 mm, and a width of preferably 20–40 mm, particularly preferably 25–35 mm, and most preferably 30 mm.
  • a hump-shaped or rampart- or hill-like distribution element located at the outlet of the inlet pipe, has proven highly effective in distributing the cooling fluid flow within the cavity. Furthermore, such a distribution element can be easily manufactured using known casting methods and is therefore preferred.
  • the distribution element preferably has an area which is at least 50% of the vertical cross-sectional area of the cavity or the respective compartment.
  • the crossbeam preferably has a thickness of 2 mm to 10 mm and a length of 50 mm to 250 mm.
  • the distribution element in the event that the distribution element is designed as a crossbeam, it preferably extends over at least 50%, preferably over at least 75% and particularly preferably over at least 90% of the width of the cavity or the respective compartment.
  • the upper wall and/or the front wall has at least one air supply opening.
  • This air supply opening allows additional air to be introduced into the combustion chamber to ensure optimal combustion.
  • the air supply opening can widen concentrically downwards (volcano-shaped), thus preventing the air supply opening from becoming clogged with thermally treated waste.
  • Such volcano-shaped air supply openings are preferably arranged in the upper wall. Furthermore, they preferably have an oval opening cross-section with a diameter of 33–45 mm and a narrowing of 4–12 mm. They also preferably widen towards the bottom plate at an angle of 18–22° to a smaller diameter of 22–28 mm.
  • the block body is preferably manufactured as a single casting and preferably also includes a portion of the base.
  • the base plate which preferably forms at least part of the base, is preferably welded to the block body and thus defines the cavity.
  • Such fabrication of the block body is particularly advantageous and makes the block body especially durable and low-maintenance. It is, of course, known to those skilled in the art that the casting
  • the base plate can be further processed before being fixed, for example by using an abrasive.
  • the cavity extends over at least 2/3 of the length of the bearing surface. Furthermore, the cavity preferably extends over at least 3/4 of the width of the bearing surface. This ensures that the largest possible surface area is available for heat exchange.
  • the cavity should preferably cover at least the contact surface for the waste to be treated, so that no thermally stressed, uncooled area of the block body is created.
  • the invention further relates to a grate comprising several of the grate blocks described above.
  • the in Fig. 1 The grate block 1 according to the invention, as illustrated, serves for the thermal treatment of waste as incineration material (not shown), which is moved or conveyed over the grate in a direction of movement B.
  • the grate block 1 comprises a block body 3 with an upper wall 5 and side walls 6.
  • the upper wall 5 comprises an outer bearing surface 7, which extends along a longitudinal axis L of the grate block 1 from a rear region 9 of the block body 3 towards a front region 11 of the block body 3.
  • the block body 3 comprises a rounded overhang 13 in the front region 11 (hereinafter referred to as the nose), which connects the front region 11 with a front wall 15.
  • a sliding surface 17 adjacent to the front wall 15 rests on the support surface 7 of another grate block (not shown).
  • Thermally treated waste is conveyed in the direction of movement B by means of relative sliding movements.
  • the sliding surfaces 17 slide on the support surfaces 7 of the grate blocks arranged below (not shown).
  • the relative sliding movements are carried out along the longitudinal axis L and are driven by a drive device (not shown), which... Movement is transmitted to the block body via a support 19.
  • several grate blocks can lie next to each other, so that the side walls 6 of grate block 1 abut the side walls of other grate blocks.
  • the block body 3 includes air supply openings 21, 23, which are arranged in the front wall 15 and the upper wall 5 and through which the thermally treated waste can be supplied with air to promote combustion. Embodiments without air supply openings are also conceivable, but are not shown here.
  • the air supply openings 23 in the upper wall 5 are preferably designed as downwardly widening passages, so that parts of the waste to be treated do not become trapped in the opening if they pass through.
  • the block body 3 also includes a planar cavity 50. As in Fig. 2 As shown, the planar cavity 50 opposite the upper wall 5 of the block body 3 is bounded by a base 51 and a base plate 53.
  • the cavity 50 further includes a fluid supply line 52 and a fluid discharge line 54, each of which is connected to a chamber 56.
  • the chamber 56 extends essentially parallel to the front wall 15 ( Fig. 1 ) and is connected to the planar cavity 50 via inlet openings 58.
  • the planar cavity 50 further comprises a partition wall 60, which extends from the front wall (reference numeral 15 in Fig. 1 ) towards a rear wall 68 ( Fig. 3 ) extends and forms a passage 64, so that the cavity 50 is divided into two compartments 62.
  • Fig. 3 shows a view from below of a section through grate block 1.
  • Fig. 1 in connection with the Fig. 2 described flat cavity 50.
  • the base plate 53 made of Fig. 2
  • the boundary of the cavity 50 has been removed here.
  • the planar cavity 50 comprises deflection elements 66, which direct the fluid flow from the fluid supply line 52 ( Fig. 2 ) to fluid drainage line 54 ( Fig. 2 redirect.
  • Fig. 3 It is also clearly visible how the planar cavity 50 in the rear area 9 of the block body 3 is bounded by the side walls 6 and the rear wall 68.
  • the air supply openings 23 pass from the upper wall through the flat cavity 50.
  • Fig. 4a and 4b show a longitudinal section along the longitudinal axis L through the front area of the block body.
  • Fig. 1 with the air supply openings 21 in the front wall 15.
  • the partition 60 which divides the cavity 50, has an opening 70 which serves to vent the compartments 62 created by the partition 60.
  • the inlet opening 58 includes a distribution element 74 in an outlet area 72 facing the cavity 50, which here is designed as a hump- or hill-like obstacle.
  • the fluid flow which is directed into the cavity 50 via the inlet opening 58, is distributed by means of the distribution element 74 so that no turbulence forms within the planar cavity 50, which could lead to foaming or air bubbles and thus to a would result in reduced cooling performance.
  • Figure 5 shows a cross-section through the front wall 15 with the in Fig. 2
  • the chambers 56 shown contain the fluid supply line 52 and the fluid outlet line 54, respectively.
  • the cooling fluid flows into chamber 56 through the fluid supply line 52 and distributes itself through the inlet openings 58 in the cavity (not shown). After passing through the cavity, the cooling fluid flows through the inlet openings 58' into chamber 56' and exits the block body 3 through the fluid outlet line 54.
  • the fluid outlet line 54 may be connected to another fluid supply line of a further block body (not shown).
  • the illustrated ingots have a longitudinal length L of 400–800 mm, preferably 500–750 mm, and particularly preferably 650–700 mm.
  • the illustrated ingots have a width Q of 280–500 mm, preferably 320–460 mm, and particularly preferably 380–420 mm.
  • the illustrated ingots have a height of 100–200 mm, preferably 130–180 mm, and particularly preferably 150–160 mm.
  • the ingot is preferably made of low-alloy to high-alloy cast steel. Compared to unalloyed cast steel, low-alloy to high-alloy cast steel additionally contains alloying elements such as chromium, nickel, and other metals in varying proportions. Molybdenum, vanadium, tungsten, and others.
  • the block is preferably manufactured by casting or injection molding.
  • the inlet openings preferably have a diameter of 12–28 mm and particularly preferably a diameter of 16–22 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Environmental & Geological Engineering (AREA)
  • Incineration Of Waste (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)

Claims (15)

  1. Bloc de grille refroidi (1) en tant que partie d'une grille pour une installation de traitement thermique de déchets, dans lequel les blocs de grille sont disposés les uns au-dessus des autres à la manière d'un escalier et sont conçus de telle sorte qu'au moyen de mouvements de poussée exécutés les uns par rapport aux autres, le produit à brûler est réarrangé et transporté pendant la combustion, comprenant
    un corps de bloc (3) réalisé sous forme de pièce coulée avec une paroi supérieure (5) qui forme une surface d'appui extérieure (7) pour les déchets à traiter, s'étendant au moins partiellement parallèlement à un axe longitudinal (L) du corps de bloc (1),
    une cavité plane (50) disposée directement en dessous de la surface d'appui (7) pour recevoir un fluide de refroidissement, qui est délimitée du côté supérieur par la paroi supérieure (5), du côté frontal par une paroi avant (15), du côté inférieur par un fond (51), du côté arrière par une paroi arrière (68) et latéralement par des parois latérales (6), le fond (51) étant formé au moins partiellement par une plaque de fond (53),
    un conduit d'alimentation en fluide (52) et un conduit d'évacuation de fluide (54), qui sont reliés à la cavité (50),
    au moins un élément de déviation (66) disposé dans la cavité (50) pour diriger un fluide de refroidissement dans la cavité (50) depuis la conduite d'alimentation en fluide (52) vers la conduite d'évacuation de fluide (54), et
    un élément de distribution (74) disposé dans une zone frontale (76) de la cavité (50) pour distribuer le fluide alimenté dans la cavité (50) par la conduite d'alimentation en fluide (52),
    la cavité plane (50) comportant une paroi de séparation (60) qui s'étendant du fond (51) à la paroi supérieure (5), qui s'étend de la paroi avant (15)
    caractérisé en ce que la paroi de séparation (60) s'étend depuis la paroi avant (15) vers la paroi arrière (68) de la cavité plane (50), forme un passage (64) dans la zone de la paroi arrière (68) et divise la cavité (50) en deux compartiments (62) reliés entre eux de manière à permettre le passage de fluide.
  2. Bloc de grille selon la revendication 1, caractérisé en ce que l'élément de distribution (74) s'étend au moins par sections le long d'un axe latéral (Q) qui est au moins approximativement parallèle à la paroi avant (15).
  3. Bloc de grille selon l'une des revendications 1, caractérisé en ce que la cavité plane (50) est reliée à une chambre frontale (56) qui s'étend sensiblement parallèlement à la paroi avant (15) et par laquelle s'effectue l'arrivée du fluide de refroidissement dans la cavité plane(50) ou l'évacuation du fluide de refroidissement hors de la cavité (50).
  4. Bloc de grille selon l'une des revendications 3, caractérisé en ce que la cavité plane (50) et la chambre (56) sont reliées entre elles par plusieurs ouvertures d'alimentation (58).
  5. Bloc de grille selon la revendication 1, caractérisé en ce que la paroi de séparation (60) présente, dans la zone de la paroi avant, une ouverture (70) pour l'aération de la cavité (50) ou des compartiments (62) créés par la paroi de séparation (60).
  6. Bloc de grille selon l'une des revendications 1 à 5, caractérisé en ce que la paroi de séparation (60) est au moins approximativement parallèle à l'une des parois latérales (6).
  7. Bloc de grille selon l'une des revendications 1 à 6, caractérisé en ce que l'élément de distribution (74) se présente de préférence sous la forme d'un bossage, d'un écran, d'une plaque perforée ou d'une barre transversale, qui s'étend au moins approximativement parallèlement à la paroi avant (15).
  8. Bloc de grille selon l'une des revendications 1 à 7, caractérisé en ce que l'élément de distribution (74) est de préférence réalisé sous la forme d'une bosse, d'un cache, d'une plaque perforée ou d'une traverse, qui s'étend au moins approximativement parallèlement à la paroi avant (15).
  9. Bloc de grille selon l'une des revendications 4 à 8, caractérisé en ce que l'élément de distribution (74) se trouve dans une zone d'embouchure (72) d'au moins l'un des ouvertures d'alimentation (58).
  10. Bloc de grille selon l'une quelconque des revendications 1 à 9, caractérisé en ce que l'élément de distribution (74) comprend une saillie en forme de tremplin ou de colline qui limite ou dévie l'écoulement du fluide de refroidissement provenant de la conduite d'alimentation en fluide (52).
  11. Bloc de grille selon l'une quelconque des revendications 1 à 10, caractérisé en ce que l'élément de distribution (74) est conçu pour permettre uniquement un écoulement limité de fluide de refroidissement devant l'élément de distribution (74) afin de permettre une distribution uniforme du fluide de refroidissement à l'intérieur de la cavité (50).
  12. Bloc de grille selon l'une des revendications 1 à 11, caractérisé en ce que la paroi supérieure (5) et/ou la paroi avant (15) comporte au moins une ouverture d'alimentation en air (21, 23).
  13. Bloc de grille selon l'une des revendications 1 à 12, caractérisé en ce que le corps de bloc (3) est fabriqué d'une seule pièce en tant que pièce coulée et la plaque de fond (53) est de préférence soudée au corps de bloc (3) pour délimiter la cavité (50).
  14. Bloc de grille selon l'une des revendications 1 à 13, caractérisé en ce que la cavité (50) s'étend sur au moins 2/3 de la longueur et/ou sur au moins 3/4 de la largeur de la surface d'appui (7).
  15. Grille comprenant plusieurs blocs de grille selon l'une quelconque des revendications 1 à 14.
EP24210864.5A 2020-09-09 2021-09-09 Bloc de grille refroidi par eau pour un incinérateur Active EP4477948B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP25224325.8A EP4692644A2 (fr) 2020-09-09 2021-09-09 Bloc de grille refroidi par eau pour un incinérateur

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP20195293.4A EP3967927B1 (fr) 2020-09-09 2020-09-09 Bloc de grille refroidi par eau pour une installation d'incinération
PCT/EP2021/074784 WO2022053550A1 (fr) 2020-09-09 2021-09-09 Bloc de grille refroidi par eau pour incinérateur
EP21777426.4A EP4211397B1 (fr) 2020-09-09 2021-09-09 Bloc de grille refroidi par eau pour une installation d'incinération

Related Parent Applications (2)

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EP21777426.4A Division EP4211397B1 (fr) 2020-09-09 2021-09-09 Bloc de grille refroidi par eau pour une installation d'incinération
EP21777426.4A Division-Into EP4211397B1 (fr) 2020-09-09 2021-09-09 Bloc de grille refroidi par eau pour une installation d'incinération

Related Child Applications (2)

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EP25224325.8A Division EP4692644A2 (fr) 2020-09-09 2021-09-09 Bloc de grille refroidi par eau pour un incinérateur
EP25224325.8A Division-Into EP4692644A2 (fr) 2020-09-09 2021-09-09 Bloc de grille refroidi par eau pour un incinérateur

Publications (3)

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EP4477948A2 EP4477948A2 (fr) 2024-12-18
EP4477948A3 EP4477948A3 (fr) 2025-03-12
EP4477948B1 true EP4477948B1 (fr) 2026-01-28

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EP20195293.4A Active EP3967927B1 (fr) 2020-09-09 2020-09-09 Bloc de grille refroidi par eau pour une installation d'incinération
EP24210864.5A Active EP4477948B1 (fr) 2020-09-09 2021-09-09 Bloc de grille refroidi par eau pour un incinérateur
EP21777426.4A Active EP4211397B1 (fr) 2020-09-09 2021-09-09 Bloc de grille refroidi par eau pour une installation d'incinération
EP25224325.8A Pending EP4692644A2 (fr) 2020-09-09 2021-09-09 Bloc de grille refroidi par eau pour un incinérateur

Family Applications Before (1)

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EP20195293.4A Active EP3967927B1 (fr) 2020-09-09 2020-09-09 Bloc de grille refroidi par eau pour une installation d'incinération

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EP21777426.4A Active EP4211397B1 (fr) 2020-09-09 2021-09-09 Bloc de grille refroidi par eau pour une installation d'incinération
EP25224325.8A Pending EP4692644A2 (fr) 2020-09-09 2021-09-09 Bloc de grille refroidi par eau pour un incinérateur

Country Status (9)

Country Link
US (1) US20230332769A1 (fr)
EP (4) EP3967927B1 (fr)
JP (1) JP2023540142A (fr)
AU (1) AU2021339933A1 (fr)
CA (1) CA3191998A1 (fr)
ES (2) ES2987363T3 (fr)
MX (1) MX2023002697A (fr)
PL (2) PL3967927T3 (fr)
WO (1) WO2022053550A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20215661A1 (fi) * 2021-06-07 2022-12-08 Ariterm Service Oy Nestejäähdytteinen arina kiinteän polttoaineen polttimessa

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02106613A (ja) * 1988-10-13 1990-04-18 Hitachi Zosen Corp 焼却炉の火格子構造
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.
DE4400992C1 (de) * 1994-01-14 1995-05-11 Noell Abfall & Energietech Roststab und Rost mit Kühleinrichtung
DK0815396T3 (da) * 1995-03-23 2000-04-03 Theodor Koch Forbrændingsrist og fremgangsmåde til optimering af dens drift
DE19622424C2 (de) 1996-06-04 1998-10-29 Martin Umwelt & Energietech Rostelement und Rost mit Flüssigkeitskühlung
DE59800138D1 (de) * 1998-09-24 2000-06-08 Von Roll Umwelttechnik Ag Rostelement und Verfahren zum Kühlen desselben
AU2000266797A1 (en) 2000-09-04 2002-03-22 Theodor Koch Grate bar with liquid cooling for incinerators
DE50100171D1 (de) * 2000-09-22 2003-05-22 Von Roll Umwelttechnik Ag Gekühlter Rostblock
PL1760400T3 (pl) 2005-09-06 2009-08-31 Ernst Schenkel Chłodzony wodą element rusztu
JP6449995B2 (ja) * 2014-09-16 2019-01-09 ヒタチ ゾウセン イノバ アクチェンゲゼルシャフト 廃棄物焼却プラントの燃焼チャンバー内で発生するスラグを処理するための方法及び装置
DE102015101356B4 (de) 2015-01-30 2025-11-13 Standardkessel Baumgarte Service GmbH Roststab mit Kühlmittel-Kanal
KR101560714B1 (ko) * 2015-05-26 2015-10-16 지이큐솔루션 주식회사 수냉식화격자 제작방법 및 이에 의해 제작된 수냉식화격자
KR101701720B1 (ko) * 2016-06-20 2017-02-03 지이큐솔루션 주식회사 수냉식 화격자 및 수냉식 화격자용 스토커를 구비한 소각로
US10309648B2 (en) * 2016-11-22 2019-06-04 General Electric Company System and method for active cooling of a grate bar for an incinerator of a waste-to-energy plant
KR102110167B1 (ko) * 2018-12-19 2020-05-13 지이큐솔루션 주식회사 연소공기 토출구를 분할배치시켜 바이오매스 연소속도에 대응하는 수냉 및 공냉 일체형 화격자

Also Published As

Publication number Publication date
EP4692644A2 (fr) 2026-02-11
EP3967927C0 (fr) 2024-07-03
EP4211397C0 (fr) 2025-01-08
EP4477948A3 (fr) 2025-03-12
CA3191998A1 (fr) 2022-03-17
EP4211397B1 (fr) 2025-01-08
ES3014401T3 (en) 2025-04-22
US20230332769A1 (en) 2023-10-19
MX2023002697A (es) 2023-05-24
ES2987363T3 (es) 2024-11-14
EP3967927B1 (fr) 2024-07-03
AU2021339933A1 (en) 2023-03-02
JP2023540142A (ja) 2023-09-21
EP4477948A2 (fr) 2024-12-18
PL3967927T3 (pl) 2024-11-04
EP4211397A1 (fr) 2023-07-19
WO2022053550A1 (fr) 2022-03-17
PL4211397T3 (pl) 2025-04-28
EP3967927A1 (fr) 2022-03-16

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