EP0874195B1 - Grille de combustion coulissante refroidie à l'eau - Google Patents

Grille de combustion coulissante refroidie à l'eau Download PDF

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Publication number
EP0874195B1
EP0874195B1 EP98810326A EP98810326A EP0874195B1 EP 0874195 B1 EP0874195 B1 EP 0874195B1 EP 98810326 A EP98810326 A EP 98810326A EP 98810326 A EP98810326 A EP 98810326A EP 0874195 B1 EP0874195 B1 EP 0874195B1
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EP
European Patent Office
Prior art keywords
grate
plates
water
movable
air
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.)
Expired - Lifetime
Application number
EP98810326A
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German (de)
English (en)
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EP0874195A1 (fr
Inventor
Jakob Stiefel
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Doikos Investments Ltd
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Doikos Investments Ltd
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Publication of EP0874195A1 publication Critical patent/EP0874195A1/fr
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Anticipated expiration legal-status Critical
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H7/00—Inclined or stepped grates
    • F23H7/06—Inclined or stepped grates with movable bars disposed parallel to direction of fuel feeding
    • F23H7/08—Inclined or stepped grates with movable bars disposed parallel to direction of fuel feeding reciprocating along their axes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • 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
    • 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
    • F23H2900/00—Special features of combustion grates
    • F23H2900/03021—Liquid cooled grates

Definitions

  • the invention relates to a water-cooled thrust combustion grate for waste incineration plants, which is particularly suitable for burning rubbish and waste with high Calorific values.
  • thrust combustion grates have stationary and movable ones Grate levels from grate plates or from a series of grate bars, the grate plates lie on top of each other in a staircase.
  • This combustion feed grate can be installed in this way be that the burning bed is substantially horizontal, or inclined, wherein Inclinations up to 20 degrees or more are common.
  • rust plates these are preferably made of sheet steel and form board-shaped hollow bodies which are extend across the width of the entire grate track and through which water as a cooling medium is directed.
  • Every second grate plate is movable and can therefore be a stoking or transport stroke To run. If it is a feed grate, the movable Push the grate plates with their front side of the firing material onto the next lower grate plate.
  • a moving-back grate forms a somewhat incorrectly installed, inclined stairs.
  • the end faces of the movable grate plates transport one Sliding grate back the firing material lying behind them, after which this in again Rolls down in the direction of the tendency to rust.
  • the movable grate plates, that is arranged between two stationary grate plates are usually collective moved back and forth in the direction of their slope. This ensures that the burning rubbish lying on the grate with a long dwell time of 45 to 120 minutes constantly relocated and evenly distributed on the grate.
  • a water-cooled thrust combustion grate has become known from EP-0'621'449.
  • This grate has grate plates that extend over the entire width of the grate track and therefore do not consist of several grate bars per grate level.
  • the movable grate plates like the stationary ones, they are hung on the rear on cross tubes, which are located in the Collective move operation forwards and backwards and thus move the movable grate plates.
  • a disadvantage of this method of driving the movable grate plates is that that a small particle that is in operation laterally between the grate plate and the side End plate jammed, can cause the grate plate to tilt sideways, this means that the plate is no longer exactly parallel to the neighboring one when viewed from above stationary grate plates.
  • a moving grate module has become known in which an individual Drive of the movable grate plates is disclosed.
  • the movable grate plates roll here on steel rollers, but are guided laterally only by means of sliding friction on the end planks.
  • the drive is realized with a hydraulic piston-cylinder unit, which the Grate plate applied approximately in the center. Even with this construction Cant inevitable. A small particle settles between the grate plate and a lateral end plank, this creates very large frictional forces, firstly require large hydraulic cylinders to overcome, and secondly, a correspondingly large amount of wear.
  • the object of the present invention is therefore to provide a water-cooled thrust combustion grate to create, in which the movable grate steps with less wear and thus long service life can be moved individually, so that the combustion process can be specifically optimized, and which also has minimal slag diarrhea.
  • the sliding combustion grate should be easy to assemble and easy to maintain, by being in a special version from below during the combustion operation is accessible and from there the individual drives of the grate plates can be replaced individually are.
  • a water-cooled thrust combustion grate Burning garbage which is made up of stairs with its front lower edge Hollow grate plates that lie on top of one another, alternately stationary and movable each of which extends across the entire width of the grate track, or of which several are assembled side by side across the entire width of the Grate track extend, the grate track laterally from planks made of water-cooled hollow profiles is limited, which run along the upper edge of a side steel wall, these steel walls over several horizontally arranged, perpendicular to them Spacer tubes are screwed together, and two between the planks further hollow profiles for the supply of purge air and cooling water run on individual Spacer tubes are attached, in which the grate plates are sealed by tubes with an elongated hole Cross section for guiding primary air are penetrated, and in which the stationary grate plates lie on the back of a spacer tube, while the movable ones Place the grate plates on steel rollers with a horizontal axis and each with a hydraulic one Cylind
  • FIG. 1 The basic structure of this sliding combustion grate with its essential elements can be seen most easily from FIG. 1.
  • FIG. 1 is a longitudinal section of one Rostes shown in a perspective view as it presents itself during construction, where individual grate plates are still missing and thus the view of the substructure is clear is.
  • This is a grate inclined downwards in the conveying direction.
  • Two vertical, parallel to each other side steel walls 1,2 are with a Number of spacer tubes 3.4 stably connected to each other. These spacer tubes 3, 4 run across the grate and extend across the light on two different levels Width between the two side steel walls 1,2.
  • the two steel walls 1,2 left and right of the grate can consist of several steel plates or parts, which in are suitably screwed together.
  • the spacer tubes 3.4 pass through them Steel walls have a thread on both sides and are by means of cones sitting on them and nuts 7 firmly screwed to the side steel walls 1, 2.
  • the spacer or cross tubes 3 of the upper level also serve as support tubes for those lying on them stationary grate plates 5.
  • the lowest stationary grate plate 5 lies with its front Edge on an ejection lip welded firmly between the side steel walls 1, 2 22 on, and with its rear area it is over the first upper distance or Cross tube 3 hanged.
  • a movable grate 6 with its front Lower edge rests on the first stationary grate plate 5 lying below it. On her The front lower edge of the next higher stationary station is itself located Grate plate 5, and so on.
  • the individual grate plates are on their bevelled Front of primary air slots 25 penetrated through the primary air for the bottom Combustion is blown.
  • Two run along the upper edge of the steel walls 1, 2 Hollow profiles in the form of square tubes, slightly offset from each other 8,9, which are closed at their lower end by being welded there.
  • These square tubes 8.9 form the side planks of the grate run and limit in operation the firing bed laterally. They are water-cooled and are going from bottom to top forcibly flowed through by water, so that its interior is always completely filled with water is filled out.
  • the individual grate plates 5,6 are made of sheet steel and also as Hollow body designed, which are forced to flow through water so that you The cavity is always completely filled with water and there are no air bubbles inside can.
  • All steel sheet parts of the grate be it the side planks 8.9 or the Grate plates 5,6, which come into contact with the firing material, are thus on the rear Sheet side constantly covered by water. So everyone can be in contact with the fire parts are constantly cooled and kept at a stable temperature so that practically no dilations occur. As a result, it is not necessary to the side of the grate plates to provide any compensating elements.
  • the grate is thereby in its construction very much simplified.
  • the stability of the grate construction is essentially due to the spacer or transverse tubes 3.4 achieved the two in two parallel planes to each other Brace and brace the outer steel walls 1, 2, as has already been described.
  • the square tubes or hollow profiles 10, 11 point to this Purpose welded cross tubes with such an inner diameter that the retaining bolts Fit 13, 14 in the support elements 12.
  • the support elements 12 themselves each have a steel roller 15 lying parallel to the corresponding grate plate level, and a steel roller 16, 17 running there in the vertical plane on the left and right.
  • a hydraulic cylinder 18 is articulated on each such support element 12, the piston rod of which 19 in turn articulated on the underside of the movable grate plate 6 moved by it is.
  • the grate plate itself, which on the support element 12 shown here is only indicated with dashed lines. It has one on the bottom central guide groove with which it rests on the steel rollers 16, 17, which when moving roll the grate plate on the bottom of this guide groove.
  • the clear expanse of the The guide groove is selected so that it is slightly larger than the diameter of the horizontal one Steel roller 15 is, whereby the grate plate from the roller 15 in the transverse direction to the grate track is adequately managed.
  • To guide the front of the movable grate plate are on 8 additional steel rolls 20, 21 are attached to the planks.
  • the associated movable Rust plate now has such recesses laterally on its front underside that a guide surface is formed on each side, which is parallel to the side surface of the Grate plate runs, but is set back relative to this, and on which this Unroll steel rollers 20, 21 when moving back and forth.
  • Each movable grate plate thus shows to a certain extent a three-point bearing.
  • the grate plate is horizontal and vertical from the corresponding steel rollers 15, 16, 17 and at the front it is guided on the left and right by the steel rollers 20, 21 while with its front lower edge on the next lower stationary
  • the grate plate rests and slides on it when it is moved back and forth.
  • Your front lower edge is specially provided with a sliding shoe made of wear material, which from time to time Time can be changed without the actual grate plate being replaced got to.
  • An advantage of the construction described here is that the movable Grate plates are guided precisely and there is no more friction on the side because the side Guide is set so that between the side edge of the movable grate plate 6 and the adjacent plank 8 a constant short distance is maintained so that no jamming small parts can fall into this slot and at the same time the slot but it is so far that sliding friction does not occur.
  • the grate plate can because of this precise guidance also no longer tilt as with conventional ones Constructions was still possible. If there has been any canting so far, the plate simply toggle against the greatly increased sliding friction with great force until that the cantilever-causing clamping part fell down or out of the slot between The grate and plank worked out.
  • Grate plates fire the fire or the firing material on the grate with larger strokes be transported.
  • the constructive solution with the support elements 12 between the longitudinal square tubes 10, 11 even allow the replacement of a drive unit during the operation of the grate.
  • the grate plates 5.6 either extend individually over the entire width of the grate track or in a variant several grate plates are connected to each other so that they are without Slits between them cover the entire width of the grate and therefore hardly any grate diarrhea occurs, which fall down on the fitters who are under the grate could.
  • each support element 12 is connected to the square tubes 10, 11 by means of the bolts 13, 14 suspended so that by knocking out the rear bolt 13 the whole support element can be tilted back, after which the articulation of the hydraulic cylinder 18 is accessible and this can be easily expanded.
  • Figure 1 is a longitudinal section shown a rust track.
  • the entire rust track often consists of several such sections.
  • the ends of the square tubes 10, 11 and the planks 8, 9 with flanges 51,52 equipped so that they are watertight with the planks and square tubes of the adjoining Section can be flanged together.
  • This design allows prepare individual longitudinal sections of a grate track ready for installation in the workshop and Quickly assemble such grate sections on site. Complicated special transports on the one hand or lengthy assembly work on the other hand avoided.
  • the water cooling of the grate plates takes place through connections on the square tube 10, in which cooling water flows from the bottom up.
  • These hydraulic cylinders are each housed in a tubular jacket, so that there is a free space between that and the actual hydraulic cylinder.
  • This Air is flushed with air from the square tube 11, so that the tube jacket is one Forms rinse cylinder.
  • the square tube 11, where there is a Hydraulic cylinder is located, tapped air from the inside of the square tube via a connection, and this air is fed through a hose into the pipe jacket, which is the hydraulic cylinder encased as a rinse cylinder.
  • the pipe jacket is open at the front so that the purge air is there can flow out again and finally reaches the zone below the grate, where it mixes with the primary air.
  • the volumes of this purge air are compared negligible to the primary air used and thus have hardly any influence on the Combustion.
  • the actual hydraulic cylinders become through this flushing of the jacket pipes and the piston rods leading out of them are always dust and dirt kept clear, which is conducive to a long service life of the drive unit.
  • a cooling effect is naturally achieved with this air flowing around, which contributes to that the hydraulic oil used is never overheated.
  • the area below the grate plates is divided into several underwind zones over the length of the grate. Each below A partition is built into a stationary grate plate, which separates the neighboring underwind zones separates from each other practically airtight.
  • the primary air volume can be determined by the Variation of the speed of the individual fans can be regulated. This variability too
  • the primary air supply in the individual grate zones helps to create a geometric fire drive by supplying the fire with targeted local air in the amount required can be.
  • Figure 2 is a section of four successive grate plates of the sliding combustion grate shown in a section along the center of the grate as seen from the side.
  • the stationary and movable grate plates 5, 6 are delimited on the side by the plank 8. Above this plank 8, plank 9 can be seen. These two water-cooled planks 8, 9 thus form the lateral boundary of the combustion bed. Between these and the grate plates 5.6 so no compensating elements are required.
  • the grate plates 5,6 are made Made of sheet steel and hollow. Your cavity is divided by partitions that a flow channel 23 is formed which runs in a zigzag course or back and forth. The flow channel 23 is designed in such a way that it is generally of leads upwards so that the water has to flow through it and thereby nowhere can air bubbles form inside.
  • the grate plates themselves are inclined, and so the water flowing in under pressure flows in them in general from bottom back to top front.
  • the flow channel is designed so that it runs along the entire surface of the grate plate so that everyone is in contact with the fire coming parts on the back are constantly surrounded by water and thus cooled are.
  • the grate plates are chamfered at the front and lead through this chamfer 24 a number of primary air slots 25. These slots are through tubes 25 with elongated holes Cross-section formed, which welded through the grate plate in this are and whose edge 26 slightly exceeds the grate plate surface. From underneath primary air for combustion on the grate is blown through these slots 25 so that there is an air flow that prevents small parts from falling through.
  • the edges 26 slightly protruding from the rust also effectively prevent non-ferrous metals or other small parts fall through the slots 25.
  • the sliding shoes 27 are made See wear material. With these sliding shoes 27, each grate plate is full and practically sealed on the next grate plate below it.
  • This Sliding shoes are steel bodies that rest on a retaining strip on the lower edge of the grate plate attached and fastened to it with bolts, the bolt heads with the sliding shoes are welded. To replace the bolt heads are ground away, after which the bolts are knocked out and the sliding shoes can be removed.
  • Both the stationary 5 and the movable grate plates 6 have their underside a skeleton 28 made of sheet steel, which gives them the necessary shape and stability.
  • the frame is designed in the middle so that a Recess 50 for receiving the hollow cylinder 18 or the tubular casing 29 is formed is.
  • the piston rods 19 protrude from the hydraulic cylinder 18 and they are at the end by means of a bolt (not shown here) on the grate plate 6 articulated.
  • the hydraulic cylinders or the tubular sleeves 29 surrounding them are at the rear the support elements 12 articulated. So that the hydraulic oil does not when the grate is in operation overheated, and the piston-cylinder unit is also cooled, you can do that Always circulate hydraulic oil through the cylinder. It flows in at a connection point cylinder 18 in and out of another.
  • a shut-off valve is actuated at the outlet, so that more hydraulic oil flows into the cylinder 18 than can flow out of it. Once the piston rod 19 fully extended or extended to the desired size, this will be The shut-off valve is opened again so that the same amount of hydraulic oil flows out of the cylinder 18 can flow in just like. Hydraulic oil flows continuously through the cylinder 18, without working. The hydraulic oil removes heat and is in one Oil cooler on the rear hydraulic pump belonging to the drive is cooled again. Conversely, if the piston is to retract into the cylinder 18, the opposite one Do the same thing on the side of the piston on cylinder 18.
  • the support member 12 can be folded around the bolt 14 counterclockwise in the illustration shown, which gives access is released to the rear pivot point of the hydraulic cylinder 18 and thus this can be expanded.
  • FIG. 3 shows a cross section through the grate frame or the grate substructure, without the Grate plates.
  • the steel plates 1, 2 form the side walls of the grating track. Perpendicular to them here run further steel plates 33, 34 which have bores, so that several grate track sections can be flanged together. Recognized on the top of the side walls square tubes 8.9, which act as water-cooled side planks for the combustion bed.
  • the grate plates come exclusively between the planks 8.
  • the both side walls 1, 2 are on two levels by means of spacer or cross tubes 3, 4 together tense. Cones 37 are slipped onto the ends of the transverse tubes 3, 4, and these are pressed against lock cones 38 by means of nuts 7, so that a stable frame construction arises.
  • the nuts 7 are still secured with lock nuts.
  • the square tubes 10 and 11 both of which run on both levels of the transverse tubes 3 and 4 one supplies cooling water and the other purge air for the hydraulic cylinders 18.
  • These square tubes 10,11 are held by connecting elements 39 on individual cross tubes 3,4. They are penetrated by tubes 35, 36 through which the bolts 13, 14 are fastened the support elements 12 can be inserted, as shown in Figures 1 and 2 is.
  • FIG. 4 shows a support element 12 for installation between the two hollow profiles 10, 11 seen from the front along the grate.
  • the support element has two side plates 40, 41 which are penetrated by tubes 42,43. These tubes 42, 43 are for receiving the fastening bolts 13.14 determined.
  • On the side plates 40, 41 are the vertical steel rollers 16.17 grown and stored.
  • the two side plates 40, 41 are behind by a connecting plate 44 welded together. This connecting plate 44 carries the bearing block 45 for the steel roller 15 arranged and mounted horizontally thereon.
  • Figure 5 shows a movable grate plate seen from below.
  • the skeleton can be seen made of sheet steel 28, which stabilizes the grate plate.
  • Through the front, here from The chamfer 24 seen below leads to a number of longitudinal slots 25 which are welded through Pipes with a slot-shaped or elongated hole-shaped cross section are.
  • the grate plate On the rear, the grate plate carries an extension 46, which is on its underside forms a guide groove 30 for the steel rollers 15, 16, 17 on the support element 12.
  • the vertical Steel rollers 16, 17 roll on the bottom 31 of the guide groove 30, while the horizontal Steel roller 15 rolls on the two side walls 47, 48 of the guide groove 30.
  • On both sides of the grate plate there is also a guide wall on the underside of each 49.50 trained. On these guide walls 49, 50 roll on the side planks 8 horizontal steel rollers 20, 21 mounted on the grating track and define a minimum Distance between the grate plate 6 and the side plank 8.

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

Claims (10)

  1. Grille de combustion à poussée, refroidie par eau, destinée à l'incinération d'ordures, constituée par des plaques de grille creuses (5, 6), alternativement fixes (5) et mobiles (6), et reposant en gradins les unes sur les autres par leur bord inférieur avant, chacune de ces plaques de grille s'étendant sur toute la largeur du tapis de grille ou plusieurs de celles-ci, assemblées les unes à côté des autres, s'étendant sur toute la largeur de ce tapis de grille, ce tapis étant limité latéralement par des glissières (8, 9), constituées par des profilés creux (8, 9) refroidis par eau, qui s'étendent chaque fois le long du bord supérieur d'une paroi latérale (1) en acier, cependant que ces parois en acier (1) sont vissées fixement entre elles par l'intermédiaire de plusieurs tubes entretoises (3, 4) horizontaux, perpendiculaires à celles-ci, et qu'entre les glissières (8, 9) s'étendent deux autres profilés creux (10, 11), destinés à l'alimentation en air de balayage et en eau de refroidissement, qui sont fixés à des tubes entretoises individuels (3, 4), cependant que les plaques (6) de grille sont traversées jointivement par des tubes (25), dont la section transversale est celle d'un trou long et qui sont destinés à l'alimentation en air primaire, les plaques fixes de grille (5) reposant chacune, à l'arrière, sur un tube entretoise 3, tandis que les plaques mobiles de grille (6) reposent sur des galets d'acier (16, 17) à axe horizontal et qu'elles sont entraínées chacune au moyen d'une unité hydraulique cylindre / piston (18, 19), caractérisée en ce que les glissières latérales (8, 9) et les profilés creux (10, 11) sont constitués chacun, dans la longueur, d'au moins deux tronçons bridés ensemble de manière étanche, que les tubes (25) destinés à l'alimentation en air primaire sont disposés dans la zone frontale des plaques (5, 6) de grille et dépassent la surface des plaques de grille (5, 6), et que les plaques mobiles de grille (6) sont guidées chacune latéralement des deux côtés, sur leur face avant, contre un galet d'acier (20, 21), dont l'axe est perpendiculaire aux plaques de grille (6), de sorte que chaque plaque mobile de grille (6) est guidée entre deux galets d'acier (20, 21).
  2. Grille de combustion à poussée, refroidie par eau, suivant la revendication 1, caractérisée en ce que les plaques mobiles de grille (6) reposent à l'arrière sur au moins un galet d'acier (16, 17), dont l'axe est horizontal, cependant que le galet d'acier (16, 17) fait partie d'un élément d'appui (12), qui est installé amovible entre les profilés creux (10, 11) assurant la circulation d'air et d'eau et comprend le point fixe d'articulation pour le vérin hydraulique (18) destiné à actionner la plaque mobile de grille (6).
  3. Grille de combustion à poussée, refroidie par eau, suivant la revendication 2, caractérisée en ce que l'élément d'appui (12) comporte un galet central de guidage (15), dont l'axe, une fois monté, est perpendiculaire au plan de déplacement de la plaque mobile de grille (6), cependant que la plaque mobile de grille (6) présente dans le bas une rainure de guidage (30) s'étendant dans le sens du déplacement et recouvrant ce galet de guidage (15) et que deux galets d'acier (16, 17), disposés l'un à côté de l'autre, sont placés sur l'élément d'appui, les axes de ces galets étant parallèles au plan de déplacement et perpendiculaires au sens de déplacement de la plaque de grille (6), le gradin mobile de grille (6) se déplaçant sur ces galets.
  4. Grille de combustion à poussée, refroidie par eau, suivant les revendications 2 à 3, caractérisée en ce que l'élément d'appui (12) est fixé aux profilés creux (10, 11) comportant les circuits d'air et d'eau au moyen de deux tiges (13, 14) parallèles entre elles, de sorte que, quand une tige (13) est retiré, l'élément (12) est escamotable vers le bas, de manière à pouvoir, en position escamotée des vérins hydrauliques (18), être déposé.
  5. Grille de combustion à poussée, refroidie par eau, suivant la revendication 1, caractérisée en ce que sur les faces intérieures des glissières latérales (8), il est disposé, pour chaque plaque mobile (6) de grille, deux galets d'acier (20, 21), sont les axes sont perpendiculaires au plan de déplacement de la plaque de grille (6) et que les plaques de grille (6) présentent, sur leur face inférieure, des surface de guidage (49, 50) décalées par rapport aux faces frontales latérales et circulant sur les galets d'acier (20, 21).
  6. Grille de combustion à poussée, refroidie par eau, suivant une des revendications précédentes, caractérisée en ce que les plaques de grille (5, 6) comportent sur leur bord inférieur avant un patin amovible (27) en matériau résistant bien à l'usure, avec lequel elles reposent de manière étanche sur la plaque de grille (5, 6) immédiatement inférieure.
  7. Grille de combustion à poussée, refroidie par eau, suivant une des revendications précédentes, caractérisée en ce que les glissières latérales (8, 9) se composent chacune de deux tubes quatre-pans parallèles entre eux et disposés décalés l'un au-dessus de l'autre, la largeur intérieure entre les tubes quatre-pans supérieurs (9) étant plus grande, et que ceux-ci forment la limitation latérale proprement dite du lit de combustion, tandis que les tubes quatre-pans inférieurs (8) forment la limitation latérale des plaques de grille (5, 6).
  8. Grille de combustion à poussée, refroidie par eau, suivant une des revendications précédentes, caractérisée en ce que les vérins ou cylindres hydrauliques (18) sont logés chacun dans un cylindre de balayage (29), à l'intérieur duquel ils sont entourés par une chemise d'air, de sorte qu'ils sont premièrement refroidis et que, deuxièmement, ils ne peuvent pas recevoir la poussière par l'extrémité ouverte sur l'avant, et que les unités hydrauliques cylindre/piston (18, 19) mêmes sont alimentées et traversées par de l'huile hydraulique, des deux côtés du piston, au moyen chaque fois d'une conduite d'alimentation et d'une conduite de retour correspondante, cependant que, pour la commande des unités hydrauliques cylindre/piston (18, 19), certaines de ces conduites peuvent être fermées, de sorte qu'une irrigation permanente de la zone du cylindre est assurée même à l'arrêt, ce qui crée un refroidissement supplémentaire.
  9. Grille de combustion à poussée, refroidie par eau, suivant une des revendications précédentes, caractérisée en ce que chaque circuit de refroidissement - connecté en série - pour les plaques de grille (5, 6), comprend deux ou plusieurs plaques de grille voisines (5, 6).
  10. Grille de combustion à poussée, refroidie par eau, suivant une des revendications précédentes, caractérisée en ce que la zone en dessous de la grille est divisée en plusieurs caissons d'air, séparés de manière étanche les uns des autres, ces caissons pouvant être alimentés séparément en air par leur propre ventilateur à régulation de vitesse.
EP98810326A 1997-04-23 1998-04-15 Grille de combustion coulissante refroidie à l'eau Expired - Lifetime EP0874195B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH936/97 1997-04-23
CH93697 1997-04-23
CH93697 1997-04-23

Publications (2)

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EP0874195A1 EP0874195A1 (fr) 1998-10-28
EP0874195B1 true EP0874195B1 (fr) 2000-03-29

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US (1) US6024031A (fr)
EP (1) EP0874195B1 (fr)
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KR20020035506A (ko) * 2002-03-02 2002-05-11 지문규 폐기물 소각로의 화격자 냉각장치
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JP5308847B2 (ja) * 2009-01-30 2013-10-09 株式会社タクマ 水冷式ストーカ炉
JP5350838B2 (ja) * 2009-03-05 2013-11-27 川崎重工業株式会社 廃棄物焼却用ストーカ炉
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CN101922715B (zh) * 2010-09-01 2011-12-14 重庆科技学院 两段式垃圾焚烧炉
CN102734806B (zh) * 2012-07-11 2015-05-27 光大环保科技发展（北京）有限公司 一种水冷往复多级液压机械式炉排炉及其控制方法
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Publication number Priority date Publication date Assignee Title
EP4027055A1 (fr) 2021-11-04 2022-07-13 Doosan Lentjes GmbH Grille etagée de combustion

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JP3715430B2 (ja) 2005-11-09
CA2235532A1 (fr) 1998-10-23
ATE191270T1 (de) 2000-04-15
DE59800108D1 (de) 2000-05-04
NO981618L (no) 1998-10-26
JPH1163460A (ja) 1999-03-05
EP0874195A1 (fr) 1998-10-28
NO981618D0 (no) 1998-04-08
ES2147040T3 (es) 2000-08-16
DK0874195T3 (da) 2000-11-20
KR19980081563A (ko) 1998-11-25
US6024031A (en) 2000-02-15
KR100494968B1 (ko) 2005-09-09
CA2235532C (fr) 2008-02-05
NO312644B1 (no) 2002-06-10

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