EP3885651B1 - Rotierendes ascherostsystem für brennkammer einer verbrennungs- oder vergasungsanlage - Google Patents

Rotierendes ascherostsystem für brennkammer einer verbrennungs- oder vergasungsanlage Download PDF

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Publication number
EP3885651B1
EP3885651B1 EP21163539.6A EP21163539A EP3885651B1 EP 3885651 B1 EP3885651 B1 EP 3885651B1 EP 21163539 A EP21163539 A EP 21163539A EP 3885651 B1 EP3885651 B1 EP 3885651B1
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EP
European Patent Office
Prior art keywords
plates
plate
fuel
lower plate
air
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EP21163539.6A
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English (en)
French (fr)
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EP3885651A1 (de
EP3885651C0 (de
Inventor
Jean RIONDEL
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Mini Green Power
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Mini Green Power
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    • 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/02—Fixed-bed gasification of lump fuel
    • C10J3/20—Apparatus; Plants
    • C10J3/34—Grates; Mechanical ash-removing devices
    • C10J3/40—Movable grates
    • C10J3/42—Rotary grates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H9/00—Revolving-grates; Rocking or shaking grates
    • F23H9/02—Revolving cylindrical grates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
    • F23K3/10—Under-feed arrangements
    • F23K3/14—Under-feed arrangements feeding by screw
    • 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
    • F23H2700/005—Rotary grates with vertical axis

Definitions

  • the present invention relates to an ash removal grate system for the hearth of a combustion or gasification installation supplied with solid fuel, said grate system comprising a lower circular plate of diameter D1 and surface S1 mounted to rotate 360° along an axis vertical rotation A, and an installation comprising such an ash grate system.
  • Combustion or gasification installations include a hearth inside which a fixed bed of a solid fuel, for example biomass, is burned to provide heat. They also generate residues, such as ashes, char or various unburnt materials, which must be continuously evacuated from the hearth, to avoid operational stoppages.
  • a solid fuel for example biomass
  • residues such as ashes, char or various unburnt materials
  • the grid systems are advantageously designed to respond to different problems in combustion or gasification installations including - the reception of the fuel injection system in the hearth; - setting the fuel in motion to advance the fuel towards the ash evacuation system, the drive system must be adapted to the heat and the presence of any dust, and be protected from it; - controlling the speed of advance of the fuel bed to avoid the formation of unburnt materials (residence time too short) or bottom ash (residence time too long).
  • Some systems include vibrating screens, others include rotating screens, still others include tilting screens, and still others include stepped screens.
  • the EP 3 338 024 A1 shows the features specified in the preamble of claim 1.
  • a problem that the invention proposes to solve is to produce an ash grate system for the hearth of a combustion or gasification installation supplied with solid fuel, which overcomes the aforementioned problems of the state of technology.
  • This system also responds to the variability of the fuel composition, which requires varying the residence times of the ashes on the grid depending on the nature of the ashes evacuated. If the ashes coming out of the grids are clumped or partially melted: the residence time is too long. It is necessary to increase the speed of certain platforms. If the ashes contain unburned matter, the residence time must be extended.
  • the solution of the invention to this problem posed has as its first object an ash removal grate system for the hearth of a combustion or gasification installation supplied with solid fuel, said grate system comprising a lower circular plate of diameter D1 and surface S1 mounted to rotate 360° along a vertical axis of rotation A, and further comprising at least one upper plate, superimposed on said lower plate, and mounted to rotate 360° along the vertical axis of rotation A, said at least one plate upper having a surface S2 less than the surface S1 of the lower plate and a maximum dimension at most equal to the diameter D1 of this lower plate, said plates being mobile, the center of gravity of said plates (being on the axis of rotation A, the or the upper plates having a shape different from the circular shape and a largest dimension substantially equal to the smallest dimension of the plate on which they are superimposed, the lower and upper plates not rotating at the same speed.
  • Its second object is a combustion or gasification installation supplied with solid fuel comprising a grid system as defined above.
  • the fuel is a fuel derived from biomass.
  • a gasification or combustion installation according to the invention is intended to burn or gasify a solid fuel, in particular from biomass, with a view to producing heat.
  • the fuel is therefore by nature heterogeneous. Its composition varies. In particular, it is more or less dry.
  • Such an installation according to the invention comprises a hearth which is provided around a vertical axis of symmetry.
  • This hearth is delimited by a side wall, for example cylindrical.
  • Fuel is admitted into the hearth through a fuel inlet corresponding to a fuel supply channel.
  • This supply channel is preferably formed of a vertical cylindrical tube centered on a set of superimposed rotating plates forming a grid.
  • solid fuel is admitted into the firebox, vertically, from bottom to top, through the supply channel, to the fuel inlet, a mound of solid fuel forms on the grate .
  • the grid system 1 comprises a lower plate P1 and one or more upper plates.
  • the number of upper plates is advantageously two or three.
  • system 1 includes three upper plates P2, P3 and P4.
  • the upper plate(s) P2 to P4 are positioned on the lower plate P1, stacked on this plate P1. All plates P1 to P4 are rotating plates, mounted to rotate around a vertical axis A at an angle of 360°.
  • the lower plate P1 is mounted on a fixed circular base 2.
  • the lower plate P1 is circular with a diameter D. It is the largest of the plates.
  • the surface of the upper plates S2, S3, S4 is less than S1. These surfaces S2, S3 and S4 are decreasing: S2 > S3 > S4.
  • the plates P2 to P4 are in an elliptical shape.
  • the plates P2 to P4 are triangular.
  • they are star-shaped.
  • other conformations of the upper plates are possible and in particular, an ellipsoidal conformation.
  • the upper plates P2 to P4 have at least one larger dimension and smaller dimensions.
  • the largest dimension of the upper plate P2 positioned immediately above the lower plate P1 is equal to or approximately equal to the diameter D of the lower plate P1.
  • the surface S2 of the upper plate P2 is less than that S1 of the lower plate.
  • FIGS. 3A and 3B have a superposition of two upper plates, for example the plates P2 and P3, the plate P3 being superimposed on the plate P2.
  • the plates P2 and P3 are in an ellipse. They therefore each have a larger dimension, namely the major axis of the ellipse, and a smaller dimension: the minor axis of this ellipse.
  • the major axis of the ellipse formed by the plate P3 is approximately equal to or equal to the minor axis of the ellipse formed by the plate P2.
  • the plates P2 and P3 are triangular and the triangles they define are equilateral.
  • the largest dimension of the triangle forming P3, namely the side of this triangle, is approximately equal to the smallest dimension defined by the triangle forming P2.
  • the plate P3 fits into the plate P2 with a greater dimension, for P3 equal or approximately equal to the smallest dimension of P2.
  • the aforementioned characteristics of the P2 and P3 plates apply in the same way to the P3 and P4 plates and so on.
  • the shape of the upper plate(s) can be diverse as long as it combines the following characteristics.
  • the center of gravity of the plates is on the axis of rotation. This makes it possible to avoid having mechanical forces distributed in a non-symmetrical manner on the supports of the plate. This improves the lifespan of the system.
  • this allows the surface of the lower plate to be alternately covered and uncovered during rotation. This makes it possible to “scrape” the surface of a lower plate by an upper plate and thus to advance the fuel towards the periphery of the reactor.
  • the thickness of the plates P1, P2, P3, P4 increases in the stacking of said plates in the grid system.
  • the lower plate P1 has a thickness of 100 mm
  • that of the upper plate P2 which is immediately above it has a thickness of 80 mm
  • that of the plate P3 is 60 mm
  • that of the plate P4 is 60 mm. This allows an equivalent quantity of fuel to be generated for each tray.
  • Plates P1 to P4 are made so that they can be dismantled in portions to facilitate maintenance and installation operations. This also allows to optimize maintenance costs by replacing only the portion of a damaged tray and not the entire tray.
  • the plates P1 to P4 are perforated so that the primary air can pass through said plates.
  • the trays have, for example, holes or slots.
  • they are provided with substantially radial slots, namely starting from the periphery of the plates and going towards the center of these.
  • Some F1 slots are not complete and do not extend to the perimeter of the decks.
  • Other F2 slots are complete and extend to the periphery of the plates. They allow the trays to expand without creating distortion.
  • the slots F1, F2 advantageously extend, on the side of the center of the plates, by openings 0 wider than the slots F1, F2. These openings 0 allow air to pass through and prevent the formation of microcracks at the level of the slots F1, F2.
  • the slots F1, F2 may not be strictly positioned radially on the plates. In other words, they may not pass through the center of these. They are then slightly inclined so that, for the same number of slots, the surface area allowing the passage of air is greater.
  • the slot surfaces are calculated so as to optimize the air flow rates and thereby the combustion/gasification profile of the solid fuel, at the level of each plate.
  • the section of the slots is calculated so as to create a determined pressure loss of the air passing through them, ensuring a homogeneous flow rate per slot, independent of the local quantity of fuel located above, and in particular avoiding uncontrolled air leaks in the event of a lack of fuel above the slots.
  • a circular fuel inlet 3 is arranged in the center of the plates P1 to P4 of the grid system 1. All the plates P1 to P4 can rotate around the axis of rotation A, identical to the axis of revolution of the fuel inlet 3. The rotational movement of a given plate creates relative movement with respect to the plates above and below and the elliptical, or other, shape of the upper plates P2 to P4, which allows you to sweep the surface of the trays on which they are superimposed and to advance the fuel towards the outside.
  • the plates P1 to P4 do not rotate at the same time and at the same speed so that there is relative movement between the plates. In other words, each of the plates P1 to P4 rotates at a different speed. Furthermore, each of the plates can rotate at a variable speed to adjust the residence time of the ashes which must be variable depending on the nature of the ashes.
  • the rotation speeds of the plates are adjustable independently of each other. They are independently controlled. They vary over time independently.
  • the plates rotate at variable speed depending on the nature of the fuel used.
  • the fact that the plates can vary their speed makes it possible to vary the residence time in the gasifier, depending on the nature of the fuel. and ashes.
  • a residence time that is too long can cause the ashes to melt and therefore block or even destroy the grid.
  • a residence rate that is too short leads to the presence of unburnt material at the bottom of the grid, which reduces the efficiency of the installation and increases the risk of blockage.
  • waste by nature of variable composition, only a grid with variable rotation speed can work.
  • the grid according to the invention is the only one that can adapt to a variable waste composition over time.
  • a large slot 4 is fitted around the perimeter of the grid to evacuate the ashes.
  • the ashes are thus continuously evacuated from the hearth through this slot 4.
  • the grid system according to the invention is also designed not to create any unwanted ash accumulation points.
  • the function of the trays is to spread the fuel and bring the ashes outwards, namely towards the wide slot 4, in order to evacuate them.
  • the fact that all the trays are mobile has two advantages compared to systems with fixed trays. First, a single moving plate allows the fuel to be swept from the moving plate plus the fuel on the lower plate. There is therefore less need to run the engines for the same service. We save energy. In addition, the system is less sensitive to possible blockages. If a tray becomes blocked for any reason, the trays above and below can be used to continue operating the grid, and therefore the power generation unit, while planning and carry out a maintenance operation at the most suitable time. Grid system availability and repair flexibility are higher.
  • the evacuation of ashes present in the hearth is done through the wide slot or groove 4 positioned around the entire perimeter of the grid system.
  • the ashes fall through this slot onto a conveyor system not shown in the figures, which allows the ashes to be brought into a storage space.
  • This wide slot 4 is made so that the largest pieces that can be injected into the hearth can be evacuated.
  • the majority of the ashes are pushed by the rotating plates towards the outside of the grid and therefore towards this slot 4.
  • small ashes can also be brought under the plates. Ultimately, these small ashes are likely to block or disrupt the flow of primary air. To avoid this phenomenon, scraping devices are installed under the trays. These devices are not shown in the figures.
  • One or more openings can also be placed at a point around the edge of the tray(s) so that the ashes fall into the throat.
  • the section of the opening is precisely calculated so as not to have a preferential air leak, which could affect the main air flow passing through the slots.
  • An injection system makes it possible to supply the fireplace with primary air from two independent air inlets in the system. These entries are referenced 5 and 6 in figures 6A And 6B .
  • These inlets 5 and 6 are primary air inlets of two independent air circuits: the cooling air circuit C1 and the main circuit C2.
  • the cooling air circuit C1 allows atmospheric air to pass through the system for rotating the system and to cool it to protect it from damage due to a rise in temperature.
  • the primary air admitted into inlet 5 thus makes it possible to cool the mechanical movement transmission system to preserve its integrity. This air also makes it possible to avoid any intrusion of ash dust into the mechanical part of the system according to the invention. Part of this primary air is injected through this inlet 5 and emerges at each plate, via a set of dedicated lights, arranged in each coaxial tube.
  • the injected air then joins the circuit under the plates of the grid system, before entering the solid fuel bed.
  • the second main C2 circuit allows most of the primary air flow to be injected into the hearth through the grille.
  • This circuit is independent of the cooling circuit and is not in contact with sensitive mechanical parts. This makes it possible to inject preheated air or directly to recirculate fumes which can reach 200°C and be loaded with dust.
  • the air admitted into inlet 6 therefore supplies the hearth through the grille. Its flow is controlled.
  • the circuit corresponding to this input is never in contact with elements sensitive to temperature or dust. This makes it possible, if necessary, to inject other gases such as recirculated flue gases which still contain fly ash and can reach 200°C.
  • a third air circuit is composed of an air ring denoted CA in Fig. 1 injection located on the periphery of the bottom grid (the lower plate). It allows you to finalize the combustion of any unburnt food on the bottom grill. Smoke recirculation optimizes the combustion of very dry and volatile fuels and reduces the production of atmospheric pollutants such as NOx.
  • quick-opening hatches 7 are advantageously arranged on the primary air circuit under the grid system. They allow the air intake circuit pipes to be quickly evacuated in the event of ash accumulation.
  • the rotational movements of the plates P1 to P4 are communicated to the plates by means of coaxial vertical tubes.
  • the coaxial vertical tubes are attached to the plates.
  • the axis of the tubes coincides with the axis A.
  • a coaxial tube rotates a plate to which it is assembled.
  • Tube T1 is assembled to plate P1
  • tube T2 is assembled to plate P2, and so on until tube T4 assembled to plate P4.
  • the coaxial tubes T1 to T4 are cylindrical of revolution and have different diameters as well as different heights. The diameter of the coaxial tubes increases from the smallest plate P4 to the largest P1.
  • the coaxial tube T4 which is assembled in the lower part of the plate P4, has a diameter smaller than the diameter of the coaxial tube T3 and so on.
  • the coaxial tubes T1 to T4 are arranged around the central fuel injection tube 8. The smaller the diameter of a tube, the greater the height of the tube is large. So, tube T4 is the tallest and tube T1 is the smallest.
  • tubes T1 to T4 are equipped, at their base, with a drive system.
  • This drive system is formed for example of toothed wheels 9 driven by a pinion 10, namely a toothed wheel of smaller diameter, fixed to a motor axis 11 parallel to the coaxial tube, actuated by a geared motor group 12. It may however be any other suitable drive system, for example, a similar system comprising an assembly provided with a toothed wheel, a chain, and a motor or piston.
  • having trays with a center of gravity on the axis of rotation allows the use of larger and heavier grids.
  • this characteristic makes it possible to avoid wearing out the mechanical transmission system prematurely while unbalanced plates create an overhang that is damaging to the entire mechanical performance over time.
  • the fact of having all the moving plates makes it possible to run the engines for less time for the same effect of advancing the fuel cell. This results in energy savings during operation and limits wear on mechanical parts.
  • Another advantage of this solution is that the grid is more resilient in the event of a blockage. It can continue to operate with a blocked plate, the trays located above and below the blocked tray operating independently.
  • Grid availability is thus improved and maintenance can be planned at the most convenient time.
  • the trays can all be dismantled in portions. This makes maintenance operations easier and can be carried out with a minimum of tools, even for a large diameter grid.
  • the complete slots in the trays and the use of refractory steel allow the trays to hold the temperature well and to have thinner trays. This provides an economic gain in manufacturing but it also facilitates maintenance with trays that are lighter to handle.
  • the variable height of the trays makes it possible to overcome the paradox of a circular grid fed from the center. Indeed, on this type of grid there is a lot of material in the center (unburned fuel) but little surface area whereas on the outside of the grid there is much less material (ash) but a larger grid surface area. . The variable height of the plates makes it possible to compensate for this phenomenon and better control combustion.
  • the double primary air circuit makes it possible to inject recirculated fumes or air preheated to a high temperature, for example of the order of 200°C, while ensuring that the mechanical system is cooled and not polluted by flying dust. Flue gas recirculation or air preheating are an advantage for reducing NOx production and for low calorific value fuels. Then, the injection system primary air ensures the distribution of air under the grille and therefore better controls combustion. It also allows the grid to be cooled with primary air.
  • the drive system based on concentric tubes allows great flexibility in the choice of the drive mechanism used. It can be adapted according to the characteristics of the grid and the fuel.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Solid-Fuel Combustion (AREA)

Claims (13)

  1. Ascherostsystem (1) für die Brennkammer einer mit festen Brennstoffen gespeisten Verbrennungs- oder Vergasungsanlage, wobei das Rostsystem eine untere kreisförmige Platte (P1) mit einem Durchmesser D1 und einer Oberfläche S1 umfasst, die entlang einer vertikalen Rotationsachse (A) um 360° rotierend montiert ist, und ferner mindestens eine obere Platte (P2, P3, P4) umfasst, die über der unteren Platte (P1) liegt und entlang der vertikalen Rotationsachse (A) um 360° rotierend montiert ist, wobei die mindestens eine obere Platte (P2, P3, P4) eine Oberfläche S2, die kleiner als die Oberfläche S1 der unteren Platte (P1) ist, und eine maximale Abmessung aufweist, die höchstens gleich dem Durchmesser D1 dieser unteren Platte (P1) ist, wobei die Platten (P1, P2, P3, P4) beweglich sind, wobei der Gewichtsschwerpunkt der Platten (P1, P2, P3, P4) auf der vertikalen Rotationsachse (A) liegt;
    dadurch gekennzeichnet, dass die obere(n) Platte(n) (P2, P3, P4) eine von der Kreisform unterschiedliche Form und eine größte Abmessung aufweist, die im Wesentlichen gleich der kleinsten Abmessung der Platte ist, auf der sie übereinander liegen, wobei die untere (P1) und oberen Platten (P2, P3, P4) so ausgelegt sind, dass sie nicht mit der gleichen Geschwindigkeit rotieren.
  2. System (1) nach Anspruch 1, dadurch gekennzeichnet, dass jede Platte (P1, P2, P3, P4) mit einer Rotationsgeschwindigkeit Vi rotierend bewegbar ist, wobei diese Rotationsgeschwindigkeit abhängig von der Zusammensetzung des Brennstoffs zeitlich variabel ist.
  3. System (1) nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die obere(n) Platte(n) so ausgelegt sind, dass sie mit unterschiedlichen Rotationsgeschwindigkeiten und individuell variabel rotieren.
  4. System (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es eine Vielzahl von übereinander liegenden oberen Platten (P2, P3, P4) umfasst, wobei alle oberen Platten (P2, P3, P4) auf der unteren Platte (P1) übereinander liegen, dadurch, dass die Oberfläche S2 der oberen Platte, die unmittelbar über der unteren Platte (P1) liegt, in die S1 der unteren Platte passt, und dadurch, dass die Oberfläche S3 und möglicherweise die Oberfläche S4 der oberen Platte(n) (P3, P4), die über der oberen Platte (P2), die unmittelbar über der unteren Platte (P1) liegt, positioniert sind, abhängig von ihrer Position in der Überlagerung der Platten absteigend sind.
  5. System (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die obere(n) Platte(n) (P2, P3, P4) eine elliptische Form aufweisen.
  6. System (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Platten (P1, P2, P3, P4) perforiert sind.
  7. System (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Platten (P1, P2, P3, P4) Schlitze (F1, F2) und/oder Öffnungen (O) aufweisen.
  8. System (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein kreisförmiger Einlass (3) für den Brennstoff in der Mitte des Stapels der Platten (P1, P2, P3, P4) vorgesehen ist, wobei die Mitte des kreisförmigen Einlasses im Wesentlichen auf der vertikalen Rotationsachse (A) positioniert ist, und dadurch, dass ein mit diesem Einlass (3) verbundenes Rohr (8) den vertikalen Eintritt des Brennstoffs durch die übereinander liegenden Platten (P1, P2, P3, P4) hindurch ermöglicht.
  9. System (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es zwei Primärlufteinlässe (5, 6) zweier unabhängiger Luftkreisläufe (C1, C2), einen Hauptluftkreislauf (C2) und einen Kühlluftkreislauf (C1), umfasst.
  10. System (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es einen Einblasluftkranz (CA) um die untere Platte (P1) herum enthält, wobei der Luftkranz dazu ausgelegt ist, Luft radial auf die untere Platte einzublasen, um das Vorhandensein von Verunreinigungen in der Asche durch Verbrennung zu beseitigen.
  11. System (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass koaxiale zylindrische Rohre (T1, T2, T3, T4) an den Platten (P1, P2, P3, P4) befestigt sind, wobei ein zylindrisches Rohr an jeder Platte befestigt ist, und dadurch, dass die Platten mittels dieser Rohre, die selbst durch Antriebsmittel unabhängig rotierend angetrieben werden, rotierend angetrieben werden.
  12. Mit festen Brennstoffen gespeiste Verbrennungs- oder Vergasungsanlage, die ein Rostsystem (1) nach einem der vorhergehenden Ansprüche umfasst.
  13. Anlage nach Anspruch 12, dadurch gekennzeichnet, dass der Brennstoff ein aus Biomasse gewonnener Brennstoff ist.
EP21163539.6A 2020-03-25 2021-03-18 Rotierendes ascherostsystem für brennkammer einer verbrennungs- oder vergasungsanlage Active EP3885651B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2002937A FR3108709B1 (fr) 2020-03-25 2020-03-25 Système de grille de décendrage pour foyer d’une installation de combustion ou de gazéification

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EP3885651A1 EP3885651A1 (de) 2021-09-29
EP3885651B1 true EP3885651B1 (de) 2023-11-08
EP3885651C0 EP3885651C0 (de) 2023-11-08

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EP (1) EP3885651B1 (de)
ES (1) ES2965055T3 (de)
FR (1) FR3108709B1 (de)
MA (1) MA55152A (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR870351A (fr) * 1940-11-07 1942-03-10 Grille de foyer permettant d'utiliser comme combustible : le poussier de charbon, tous déchets ménagers, les sciures vertes ou sèches, tous les déchets de bois
CH226199A (fr) * 1941-03-06 1943-03-31 Forni Ed Impianti Ind Ingg De Bartolomeis Spa Grille rotative.
ITUB20153154A1 (it) * 2015-08-18 2017-02-18 Paolo Gaggero Griglia per bruciatori o gasogeni per combustibili solidi e gasogeno per biomasse

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EP3885651A1 (de) 2021-09-29
EP3885651C0 (de) 2023-11-08
FR3108709A1 (fr) 2021-10-01
ES2965055T3 (es) 2024-04-10
MA55152A (fr) 2022-05-11
FR3108709B1 (fr) 2022-03-11

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