EP3583357B1 - Grille d'avance dotée d'éléments de séparation de voies de grille - Google Patents

Grille d'avance dotée d'éléments de séparation de voies de grille Download PDF

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Publication number
EP3583357B1
EP3583357B1 EP17761813.9A EP17761813A EP3583357B1 EP 3583357 B1 EP3583357 B1 EP 3583357B1 EP 17761813 A EP17761813 A EP 17761813A EP 3583357 B1 EP3583357 B1 EP 3583357B1
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EP
European Patent Office
Prior art keywords
grate
separation element
feed
track separation
rod
Prior art date
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Application number
EP17761813.9A
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German (de)
English (en)
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EP3583357A1 (fr
Inventor
Holger Kleen
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Mitsubishi Power Europe GmbH
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Mitsubishi Power Europe GmbH
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Publication of EP3583357A1 publication Critical patent/EP3583357A1/fr
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H17/00—Details of grates
    • F23H17/08—Bearers; Frames; Spacers; Supports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H7/00—Inclined or stepped grates
    • F23H7/02—Inclined or stepped grates with fixed bars
    • F23H7/04—Inclined or stepped grates with fixed bars in parallel disposition
    • 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
    • F23H2900/00—Special features of combustion grates
    • F23H2900/03021—Liquid cooled grates

Definitions

  • the invention relates to a grate track separation, which consists of a large number of grate track separating elements, for the stationary arrangement between two grate tracks of an inclined feed grate of a pusher grate firing system, made up of individual grate bars arranged in rows, in particular for grate firing, with the installed state of the grate track separating element in a grate track of the advance grate in each row of grate bars adjacent to the grate track separating element in the longitudinal direction of the two grate tracks adjacent to each grate track separating element in each case a first stationary grate bar and resting on an upper wing side of the first grate bar an associated second grate bar which is mounted on the wing side of the first grate bar so that it can be pushed and slid along, are arranged and wherein the grate path separating element is designed as a cast part with tubular lines through which water can flow that are formed in cast part walls when it is cast.
  • the invention relates to a moving grate of a pusher grate furnace, in particular for grate firing, with grate tracks formed in steps from individual grate bars arranged in several longitudinal and transverse rows and aligned at an incline, with grate tracks comprising several longitudinal and transverse rows of grate bars being one of a large number formed on individual grate track separating elements arranged in a fixed row next to one another and in each of the grate bar rows adjacent to the grate track separating elements in the longitudinal direction of the two grate tracks there is a first stationary grate bar and an associated second grate bar which is movably mounted and rests on the upper side of the bearing surface of the first grate bar which is mounted in a feed-moving manner to slide along this wing, and wherein the grate path separating elements are each designed as a cast part with tubular lines through which water can flow that are formed in the cast part walls when it is cast.
  • moving grates are part of the moving grate firing of grate firing systems.
  • a moving grate is one Combustion grate of a grate incineration plant arranged at an incline, usually consisting of several grate tracks, on which waste to be incinerated is placed at one end and transported to the other end of the incineration grate. On the way from the loading end to the delivery end, the waste is incinerated.
  • Each grate track consists of alternately in each case a transversely running row (transverse row) forming stationary arranged first grate bars and relative to these feed-movably on these sliding along sliding second grate bars.
  • the feed-movably mounted grate bars are all arranged in such a way that they are moved evenly on the row of first grate bars arranged underneath.
  • each transverse row of second grate bars mounted so as to be moveable in feed moves uniformly.
  • the grate bars are all designed with the same width, so that uniform longitudinal rows form in the longitudinal direction of a grate track over its length, in which a stationary mounted first grate bar and a feed-movably mounted second grate bar are arranged one behind the other.
  • the waste is transported from the feed side to the opposite side of the feed grate by means of a uniform backwards and forwards movement of the individual rows formed by the second grate bars mounted so as to be movable in feed.
  • the configuration of the feed grate as a combustion grate is achieved, among other things, in that the individual grate bars have an outlet slot in at least one of their outer surfaces for the combustion air flowing from below the grate bars. After the waste has been ignited for the first time, the combustion air flowing in from below ensures permanent combustion of the waste on the respective grate tracks.
  • feed grates of this type are preferably used in waste incineration, they can also be used to burn biomass or so-called substitute fuel, such as plastic waste, or mixtures of the fuels mentioned.
  • the individual Grate tracks arranged in such a way that they can expand at least on one long side.
  • a grate track separation made up of individual, stationary grate separating elements is formed centrally between the two grate tracks, which is also referred to as a central beam.
  • these grate track separating elements it is known to form them as water-coolable castings. During the casting of the cast part, tubular lines through which water can flow are formed in the walls of the element.
  • Such grate track separating elements are often designed as an arc in the form of an upside down U.
  • Prior art grate track separation elements are off EP1134495A1 and JPH0533917A known.
  • the invention is based on the object of providing a solution that makes it possible to provide a readily castable grate web separating element with improved adaptation to the grate bar geometry of the moving grate.
  • the grate track separating element has a flat bearing surface on the upper side and an upright end face in the thrust direction of the feed grate at the front and a front bearing surface on the underside and, spaced therefrom, a rear grate bar carrier receptacle designed in the form of a recess on the underside.
  • a moving grate of the type described in more detail at the outset in that at least part, preferably all, of the plurality of grate path separating elements has a flat bearing surface on the upper side and an upright end face in the pushing direction of the moving grate and a front bearing surface on the underside and spaced therefrom has a rear grate bar support receptacle designed in the form of a recess on the underside.
  • the grate track separating element according to the invention with its configuration according to the invention is adapted in its geometric design to the shape of the grate bars of stepped feed grates or combustion grates results in an improved integration of the grate track separating element into the grate track geometry of the feed grate formed by the grate bars of two adjacent grate tracks.
  • the waste/fuel in this operating case forms a coating that protects the surface of the grate track separating element from excessive heat exposure.
  • the design of the grate track separating element according to the invention results in good castability of this component, so that it can be easily produced as a cast part with molten steel even with applied or formed tubular lines in its wall region, especially in the grate track floor having the lines.
  • the grate path separating element according to the invention is particularly suitable for use in conventional feed grates or combustion grates, in particular in grate firing systems, in that it has a front bearing surface on the underside and a rear grate bar carrier receptacle spaced from this on the underside.
  • a grate track separating element With the front bearing surface, a grate track separating element can be placed on the top planar support surface of another grate track separating element arranged directly in front of it, so that the step-like formation of the feed grate results analogous to the arrangement of the grate bars.
  • the design of the grate bar support mount makes it possible to place and store the grate track separating element on conventional grate bar supports that are present in the grate tracks of the feed grate.
  • the grate track separating element has the same height as two grate bars lying on top of each other and the length of the planar support surface on the upper side corresponds to the length of the travel path of a pushable grate bar, gives the grate track separating element an overall compact design that is of such a size that a grate track separating element can be handled as an individual component and can be handled as an individually replaceable component.
  • the moving grate according to the invention has the same advantages.
  • the height of the grate track separating element is at least equal to the height that extends from the underside of the grate track of the moving grate from the underside of the first and associated movably mounted second grate bar lying on top of each other in a stationary manner Bearing surface of the first grate bar extends to the top of the supporting surface of the second grate bar, which the invention provides in a further development.
  • the height extending from the underside support side of the support surface of the grate track separating element to the top supporting side of the supporting surface of the grate track separating element is equal to the added individual heights of the first and second grate bar. It is particularly advantageous if the level of the planar supporting surface on the upper side of the grate path separating element is the same or at least essentially the same as the level of the upper supporting surface side of a second grate bar adjacent to the grate path separating element when this is in its installed position in which it is on the upper side Wing side of an associated first grate bar rests.
  • first and second grate bars This makes it possible for fuel, in particular waste, to be moved or conveyed from the grate tracks adjacent to the grate track separating element onto the planar supporting surface of the grate track separating element on the upper side. While it is possible for the first and second grate bars to have different heights or thicknesses, it is of particular advantage if the first and second grate bars are of the same height or thickness. This makes it possible to equip a moving grate with just one type of grate bar, which can become the first stationary grate bar or the second grate bar movably mounted, depending on whether it is arranged and mounted on a grate bar carrier that can be moved in advance or on a stationary grate bar carrier.
  • the invention provides that the upper flat supporting surface of the grate track separating element is designed to be the same length as or shorter than the top supporting surface side of the first and/or the second grate bar.
  • This configuration makes it possible to easily arrange a grate track separating element according to the invention in a moving grate next to a grate bar that is movably mounted for feed, without the mounting of the second grate bar that can be pushed and movably mounted on a grate bar carrier being impaired by the length of the grate track separating element.
  • the grate track separating element according to the invention is also adapted to the geometry of the front side of the surrounding grate bars if the upright end edge of the grate track separating element has a height which is, preferably at least essentially, equal to the height of the front upright end edge of the first or second grate bar .
  • a grate track separating element is then particularly advantageously adapted as an exchangeable component in the design and structural design of the grate tracks and longitudinal and transverse rows of grate bars arranged adjacent to it in a moving grate if the grate track separating element extends from the lower edge at the edge of the upright face of the grate track separating element to the center an inscribed circle that fills the underside rear grate bar support receptacle of the grate track separating element and is equal to the length extending from a peripheral lower edge of the upstanding end face of the first grate bar to the center of an underside rear grate bar support receptacle of the first grate bar and/or extending from a peripheral lower edge of the upstanding end face of the second grate bar is the length extending up to the center of a rear grate bar carrier receptacle on the underside of the second grate bar, which the invention provides in a further embodiment.
  • This makes it possible to use existing substructures such
  • the rear grate bar carrier receptacle of the grate path separating element and the rear grate bar carrier receptacle of the first grate bar rest on the same stationary grate bar carrier, preferably a round rod.
  • the grate track separating element is exposed to high temperatures and also to the influence of highly corrosive components, in particular gases that form during waste incineration, when the feed grate is operated as an incineration grate, in particular in a waste incineration plant, it is also advantageous if the grate track separating element is made of a , In particular high chromium stainless steel melt cast casting is made, which the invention further provides.
  • the width of a grate line separating element is the same size or twice the width of the first and/or the second grate bar, which is a further configuration the invention provides.
  • the invention also provides in a further development that the tubular lines through which water can flow are designed and arranged in meandering, labyrinth-like paths that run into one another below the flat supporting surface on the upper side in a supporting base of the grate path separating element .
  • this makes it possible to form the connecting surface with such a length that when the second grate bar, which can be advanced, is in its front end position, it is then between the upright end face of the first grate bar, which is mounted in a stationary manner, and the upper wing side of the overlying feed-movable second grate bar formed stage and height difference is bridged in the grate separating element as a sloping or curved surface or plane.
  • the invention therefore provides in an embodiment that the grate track separating element has an inclined and/or curved connecting surface between the front of its upper-side flat bearing surface and its upright end face.
  • the moving grate according to the invention is characterized in that its grate track separating elements are designed in the configuration and further development of the grate track separating element according to the invention. It is therefore also provided that the grate track separating elements are designed as a grate track separating element according to one of Claims 2-16.
  • a grate path separating element according to the invention is generally designed with a length that corresponds to the length of a grate bar plus the distance that results in the front advance position of a pushable second grate bar between its front end face and the end face of the stationary first grate bar arranged underneath on which the second grate bar rests, the number of in a moving grate according to the invention when the grate track separation in the form of a central beam consists of only one row of grate track separating elements arranged one behind the other is half as large as the number of first and second grate bars arranged in a longitudinal row.
  • the invention therefore also provides that the number of grate track separating elements forming the central beam is half the sum of the first and second grate bars which are movable and stationary and are arranged in each of the two longitudinal rows lying on the opposite longitudinal sides of the central beam.
  • the number of grate track separation elements is half the number of transverse rows.
  • the moving grate according to the invention is therefore also characterized in an embodiment in that the number of grate track separating elements forming the central beam is half the number of transverse rows formed from stationary first and moveable second grate bars of the grate track(s) adjacent to the central beam.
  • a moving grate that is or can be designed in a structurally advantageous manner with regard to the arrangement of its grate bar support elements and the surface of the grate tracks, in particular with regard to the interchangeability of individual grate bars and grate separating elements, results when the first and second grate bars are the same from the underside of the support surface of the respective grate bar up to the upper side of the support surface of the respective grate bar and the grate track separating element in its extending from the underside support side of the support surface of the grate track separating element to the top support side of the Supporting surface of the grate path separation element extending height is twice as high as the first or the second grate bar is formed.
  • each grate track separating element is designed as an individually replaceable component of the center beam and is arranged interchangeably between two grate tracks of the moving grate.
  • the invention is characterized in that the feed grate is designed in two lanes with two grate lanes separated by a grate lane separator designed as a central beam.
  • a grate lane separator designed as a central beam.
  • Figures 3-8 each from the illustration 2 represent special views that have been detached, but which in any case are those in the 2 shown relative positions of grate web separation elements and first and second grate bars to each other, as will be explained in more detail below.
  • the 1 shows a feed grate, denoted overall by 1, of a push grate firing system of a grate firing system.
  • the feed grate 1 has two tracks and includes two grate tracks 2, of which only one is shown and the other identically constructed second grate track in the illustrated free grate track field 2 'is arranged.
  • the two grate tracks 2 are separated from each other in the middle of the moving grate 1 by a stationary grate track separation 3 ⁇ , which is composed of individual grate track separating elements 4', in the middle and half in relation to the width of the moving grate 1.
  • the individual grate tracks 2 have a large number of longitudinal rows 5 and transverse rows 6 .
  • the longitudinal and transverse rows 5, 6 are formed from first grate bars 7 and second grate bars 8 arranged individually adjacent to one another.
  • the first grate bars 7 are stationarily mounted grate bars and the second grate bars 8 are grate bars mounted for feed movement, which rest on an upper wing side 9 of a first grate bar 7 and can be slid along on this upper wing side 9 between a front and a rear one End position of their respective front upright end face 10 are stored sweeping a travel V.
  • a respective longitudinal row 5 thus consists of a large number of first and second grate bars 7, 8 arranged at least substantially aligned with one another in the longitudinal direction L, with a stationary mounted first grate bar 7 and, resting on it, a second grate bar 8 mounted so as to be able to slide along it, in turn followed by a now on the upper side wing surface 11 of the underside adjacent second grate bar 8 arranged first grate bar 7, on which first grate bar 7 then in turn a second grate bar 8 is arranged.
  • This design results in a step-shaped and inclined rising grate surface of each grate track 2 from the discharge side A to the feed side B of the moving grate 1.
  • the stepped shape results from the alternating arrangement of a first grate bar 7 and a second grate bar 8.
  • a respective transverse row 6 is formed from grate bars lying adjacent to one another in the transverse direction Q of the moving grate.
  • Each transverse row consists of one type of grate bar, i.e. either exclusively stationary or mounted first grate bars 7 or movably mounted second grate bars 8, so that a fixed transverse row and a movably mounted transverse row are formed alternately over the length of the feed grate 1.
  • Moving the second grate bars 8 movably mounted forward into a front end position then moving back into a rear end position and then moving forward again into a front end position transports the waste to be burned on the feed grate 1 from the feed side B to the discharge side A.
  • the combustion air required for incinerating the refuse flows to the underside of the plurality of first and second grate bars 7, 8 and exits as combustion air through air outlet slots 12 formed in the top-side wing sides 9, 10.
  • the feed grate 1 shown differs from the feed grate according to the invention only in that the grate track separation 3' designed as a central beam 13 is made from grate track separating elements 4' according to the prior art.
  • These stationary arranged and mounted grate path separation elements 4 ' are formed in a known manner in the form of an upside down U as a cast part with tubular water-throughflow lines formed during its casting in cast part walls and protrude, as shown in FIG 1 can be seen, beyond the grate track surface formed by the first and second grate bars 7, 8.
  • grate track separation 3' Only this grate track separation 3' is replaced in a moving grate 1 according to the invention by a grate track separation 3 formed from grate track separating elements 4 according to the invention. All other elements correspond to those described above and in the 1 elements and components shown. The possibility of expansion of the individual transverse rows 6 in the transverse direction Q is not ensured by the central grate track separation 3, 3', but rather by bearings on the opposite longitudinal sides of the moving grate 1, which are not shown in detail.
  • a grate web separation 3 formed from grate web separation elements 4 according to the invention of a moving grate 1 according to the invention is shown below with reference to FIG Figures 2-9 explained in more detail.
  • the figure 2 shows in the form of a group of grate track separating elements 4 detached from a grate track 2 and first and second grate bars 7, 8 their relative location and installation position to each other in their respective installation positions in a grate track 2 of a moving grate 1.
  • it is a representation of a group of first and second grate bars 7, 8 and grate track separating elements 4.
  • each grate path separating element 4 has a planar bearing surface 15 on the upper side and an upright end face 16 at the front in the pushing direction of the feed grate 1.
  • each grate track separating element 4 has a front support surface 17 adjoining the upright end face 16 at the front and, spaced therefrom, a rear grate bar carrier receptacle 18 designed in the form of a recess.
  • Each grate track separating element 4 rests with its underside front bearing surface 17 on the flat bearing surface 15 of the next grate track separating element 4 adjacent to it at the front in the longitudinal direction L.
  • the top planar wing 15 has a length L1 on. This length L1 is at least equal to the length L2 that the second grate bar 8 rests on on the upper side of the wing 9 of the first grate bar 7, which is adjacent to it at the front in the longitudinal direction L, during its advance movement between the front and rear end position of its front upright end face 10 as travel path V coated. These lengths and aspect ratios are particularly in the 2 shown.
  • the overall length L4 of a grate path separating element 4 is at least as long as the length L3 extending from the front end edge of a stationary first grate bar 7 to the rear end position of the front upright end face 10 of the second grate bar 8, which is mounted in a feed-moving manner on the wing side 9 of this first grate bar 7.
  • the overall length L4 is preferably 10 to 20% longer than the length L3 in order to still have a sufficient lateral contact surface to the adjacent grate track separating element 4 and a sufficient overlap remaining in this position in the rear end position of a respective upright end face 10 of a second grate bar 8 mounted so that it can be advanced of a second grate bar 8 with the top planar wing 15 of the adjacent adjacent grate web separating element 4 .
  • L4 to L3 are in particular from the 3 apparent, in a manner analogous to the representation according to the 4 the one in the 2 and 4 shown grate web separation elements 4 of the in 2 seen on the left in a perspective view with the in the 2 rows of first and second grate bars 7, 8 arranged in front on the left-hand side.
  • the length L1 of the planar supporting surface 15 on the upper side of each grate track separating element 4 can be the same length or, depending on the length L2 of the travel path V formed in each case, can also be shorter than the upper supporting surface side 11 of a second grate bar 8 mounted in a feed-movable manner.
  • first and second grate bars 7, 8 are advantageously designed to be geometrically identical, so that any of these grate bar elements can be used both as a stationary first grate bar 7 and as a feed-movably mounted second grate bar 8 Grate bars 8 and the grate bars 7 have a length L5 of their respective upper-side wing sides 9, 11.
  • each grate track separating element 4 has a front-side connecting surface 20 which is designed to be inclined and/or curved and connects these two surfaces.
  • the figure 5 shows a side view of the group of grate web separating elements 4 in the arrangement with first and second grate bar elements 7, 8 as shown in FIG 4 are shown in a perspective view, i.e. with the second grate bars 8 located in their front end position of their feed movement.
  • the 6 shows the opposite view of the respective opposite side surface of the grate web separating elements 4 in the arrangement as shown in FIG 3 is shown, ie with the second grate bars 8 located in their rear feed position of their feed movement
  • Figures 7 and 8 Side views of the opposite sides of each in the Figures 5 and 6 arrangements shown. This is how it shows 7 a side view of the Kir figure 5 opposite side of the grate web separating elements 4, so that a top view of this (in 2 right side) arranged first and second grate bars 7, 8 results.
  • In analog representation shows the 8 the for presentation after the 6 opposite side of the grate web separation elements 4, so that a top view of the 2 first and second grate bars 7, 8 located on the left side of the grate path separating elements.
  • the 9 shows a side view of two grate track separating elements 4 lying on top of one another of a grate track separating device 3 designed according to the invention, which is arranged in a stationary manner as a central beam 13 on a support structure 21 of a grate track 2 .
  • a grate track separating device 3 designed according to the invention, which is arranged in a stationary manner as a central beam 13 on a support structure 21 of a grate track 2 .
  • the representation of 9 corresponds to the representations of 4 , 5 and 7 , in which the feed-movable second grate bar 8 is in its front end position of its feed movement.
  • each grate track separating element 4 is equal to the total height, which is the same as the first grate bar 7 lying on top of one another in a fixed position and the associated second grate bar 8 resting on it so that it can be pushed forward in their installed state in a grate track 2 of the moving grate 1 from the underside 22 of the bearing surface 23 of a first grate bar 7 (see also Figures 7 and 8 ) up to the upper side wing 11 of the second grate bar 8 extends.
  • the height H4 shown in the figures represents the height that the grate track separating element 4 has at least.
  • the term “essentially the same” includes upward deviations of a maximum size 10%, in particular a maximum of 5%, of the added individual heights H7 and H8.
  • the individual heights H7 and H8 each extend from an underside support surface of a grate bar to its upper wing side, i.e.
  • the total height H4 of a grate track separating element 4 results from the addition of the individual heights of the grate bars 7, 8, i.e. the height H7 of the first grate bar 7 and the height H8 of the second grate bar 8 17 of the grate track separating element 4 up to the upper-side supporting side 26 of the supporting surface 15 of the grate track separating element 4 is therefore equal to the added individual heights H7, H8 of the first and second grate bar 7, 8 in the exemplary embodiment.
  • the heights of the front upright end surface 16 of the grate path separating element 4 and the front upright end surface 14 of the first grate bar 7 and the front upright end surface 10 of the second grate bar 8 are formed with an identical height extension or height. At least these heights are in turn essentially the same, which means that the heights differ by a maximum of 10%, preferably by 5%, in their longitudinal extent.
  • both the first grate bar 7 and the second grate bar 8 as well as the grate track separating element 4 is characterized in that they all have the same length L6, which extends from a respective lower edge 30.1, 30.2 or 30.3 of the respective upright end face 10, 14, 16 to a vertical fall the plane of the respective underside of the front bearing surfaces 17, 22 and 25, which is fallen from the center of an inscribed circle 33 that can be formed in the respective rear grate bar support receptacle 18, 31 or 32.
  • this length is L6 in the figure 11 shown.
  • the length L6 extends from the lower edge 30.3 of the upright end face 16 of the Grate track separating element 4 extends up to an inscribed lot 34 that fills out the center of a lower-side rear grate bar carrier receptacle 18 of the grate track separating element 4 .
  • identical lengths L6 each extend from a lower edge 30.1, 30.2 of the upright end faces 14 and 10 of the first grate bar 7 and second grate bar 8 to the solder felled from the center of an inscribed circle arranged in a respective grate bar carrier receptacle 31, 32.
  • the grate path separating element 4 is dimensioned in such a way that a first and a second grate bar 7, 8 do not protrude beyond the planar supporting surface 15 of the grate path separating element 4 in their respective superimposed position. It can also be seen from these figures that the front sides of the first and second grate bar 7, 8, which comprise the respective upright end faces 10, 14, do not extend beyond the front-side connecting surface 20 of the Rostbahn separating element 4 protrude.
  • the length L4 of the grate path separating element 4 is at least as long as the plane spanned by a front upright end face 14 of a first grate bar 7 to the rear end 35 of the upper wing side 11 of a second grate bar 8 resting on the first grate bar 7, if this is in its front end position of its feed movement, extending length L7.
  • the maximum length L4 of the grate path separating element 4 is as long as the plane spanned by the front upright end face 14 of a first grate bar 7 to the rear end of the second grate bar 8 resting on the first grate bar 7 when this is in its front end position is in its feed motion, extending length L10.
  • the length L4 is preferably of the same length as the length L7, as is also the case in the exemplary embodiment.
  • the grate web separating element 4 is formed in such a total length L4, which is at least, preferably approximately, in particular exactly equal to that resulting from the addition of a dated rear end 35 of the upper wing side 11 of a second grate bar 8 mounted so as to be moveable for advancement up to the plane spanned by its front upright end face 10, plus a length L8 extending from the plane spanned by the front upright end face 10 of the second grate bar 8 up to the plane spanned by the front upright end face 14 of a first grate bar 7 lying adjacent under the second grate bar 8 in the spanned plane extending length L9.
  • the width B4 of the grate path separating element 4 is equal to both the width B7 of the first grate bars 7 and the width B8 of the second grate bars 8.
  • dimensions can also be selected in which the width B4 of the grate path separating element 4 is a multiple of the width B7 of of the first grate bar 7 or the width B8 of a second grate bar 8, in which case the width B4 is preferably twice the width B7 or the width B8.
  • the rear grate bar carrier receptacle 18 is in the installed state of the grate path separation element 4 in the feed grate 1 on a fixed grate bar carrier 36, as from the 11 can be seen, has the diameter of the inscribed circle 33 .
  • the grate bar carrier 36 is preferably the stationarily mounted grate bar carrier 29 on which the first grate bar 7 is stationarily mounted.
  • the rear grate bar carrier receptacle 18 of the grate path separating element 7 and the rear grate bar carrier receptacle 31 of the first grate bar 7 rest on the same stationary grate bar carrier 29, 36. All grate bar supports 28, 29 and 36 are designed as round bars.
  • grate web separation element 4 is designed as an individually replaceable component. It is cast as a cast part 37 from molten steel in a casting process that is customary in practice.
  • the steel melt is preferably a high-chromium steel melt with the material code 1.4823 or 1.4740.
  • the grate path separating element 4 is produced from a high-grade steel melt which has between 25 and 28% by weight of chromium with 0.3 to 0.5% by weight of carbon and a proportion by weight of 3 to 6% of nickel.
  • the visible pipelines 38 are cast in meandering, labyrinthine paths that run into one another in a wall region of the grate path separating element 4 that forms the support base 39 of the grate path separating element 4 .
  • the tubular water-throughflow lines extend below the top planar support surface 15, below the top of the connecting surface 20 and below the front upright end face 16, as indicated by the dashed lines in FIG 11 is evident.
  • the two connection pipes 40, 41 which can be connected to water-carrying lines, protrude from the support base 39.
  • the grate line separating element 4 is thus designed as a so-called water-cooled grate line separating element.

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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)

Claims (24)

  1. Séparation de voies de grille (3, 3'), qui est composée d'une pluralité d'éléments de séparation de voies de grille (4) individuels disposés et montés de manière fixe, pour l'agencement fixe sous la forme d'une barre centrale (13) entre deux voies de grille (2, 2') d'une grille d'avance (1) inclinée d'un foyer à grille mobile, en particulier pour le foyer à grille, réalisée en forme de gradins à partir de barreaux de grille (7, 8) individuels disposés en rangées, dans laquelle chaque élément de séparation de voies de grille (4) présente du côté supérieur une surface porteuse plane (15) et du coté avant, dans le sens de la poussée de la grille d'avance (1), une surface frontale verticale (16) ainsi que, du côté inférieur, une surface d'appui avant (17) et, à distance de celle-ci, du côté inférieur, un logement de support de barreaux de grille arrière (18) réalisé sous la forme d'un évidement et dans laquelle plusieurs des éléments de séparation de voies de grille (4) reposent de manière disposée sous forme de gradins respectivement avec leur surface d'appui avant inférieure (17) sur la surface porteuse plane (15) de l'élément de séparation de voies de grille (4) suivant voisin respectivement du côté avant de l'élément de séparation de voies de grille (4) respectif dans une direction longitudinale (L) , et dans laquelle chaque élément de séparation de voies de grille (4) est réalisé en tant que pièce coulée (37) avec des conduites (38) tubulaires pouvant être traversées par de l'eau, réalisées dans des parois de la pièce coulée lors de sa coulée.
  2. Séparation de voies de grille (3, 3') selon la revendication 1, caractérisée en ce que chaque élément de séparation de voies de grille (4) présente du côté avant une surface de liaison (20) réalisée de manière inclinée et/ou courbée et reliant le côté avant de sa surface porteuse plane (15) supérieure à sa surface frontale verticale (16).
  3. Séparation de voies de grille (3, 3') selon la revendication 1 ou 2, caractérisée en ce que chaque élément de séparation de voies de grille (4) est réalisé en tant que composant remplaçable individuellement.
  4. Séparation de voies de grille (3, 3') selon l'une quelconque des revendications précédentes, caractérisée en ce que chaque élément de séparation de voies de grille (4) est fabriqué en tant que pièce coulée (37) coulée à partir d'un acier inoxydable fondu, en particulier à haute teneur en chrome.
  5. Séparation de voies de grille (3, 3') selon l'une quelconque des revendications précédentes, caractérisée en ce que les conduites tubulaires (38) pouvant être traversées par de l'eau de chaque élément de séparation de voies de grille (4) sont réalisées et disposées dans des voies s'étendant les unes dans les autres en forme de méandres et de labyrinthes en dessous de la surface porteuse plane (15) supérieure dans un fond porteur (39) de l'élément de séparation de voies de grille (4).
  6. Grille d'avance (1) d'un foyer à grille mobile, en particulier pour le foyer à grille, avec des voies de grille (2, 2') formées en gradins de barreaux de grille (7, 8) individuels disposés en plusieurs rangées longitudinales et transversales (5, 6) et orientées de manière inclinée, dans laquelle une séparation de voies de grille (3, 3') selon la revendication 1 réalisée à partir d'une pluralité d'éléments de séparation de voies de grille (4) individuels, disposés de manière juxtaposée et fixe sous la forme d'une barre centrale (13), est réalisée entre deux voies de grille (2, 2') comprenant plusieurs rangées longitudinales et transversales (5, 6) de barreaux de grille (7, 8), et dans la direction longitudinale (L) respectivement un premier barreau de grille (7) monté de manière fixe et un deuxième barreau de grille (8) associé, monté de manière mobile par avance, qui est monté sur un côté de surface porteuse supérieur (9) du premier barreau de grille (7) de manière à pouvoir glisser de façon mobile par avance en s'appuyant sur ce côté de surface porteuse (9), sont disposés à plusieurs reprises dans chacune des rangées de barreaux de grille (5) des deux voies de grille (2, 2') voisines des éléments de séparation de voies de grille (4).
  7. Grille d'avance (1) selon la revendication 6, caractérisée en ce que chaque élément de séparation de voies de grille (4) est dimensionné de telle sorte qu'une longueur (L1) de la surface porteuse plane (15) supérieure de l'élément de séparation de voies de grille (4) est au moins égale à une longueur (L2) qu'un deuxième barreau de grille (8) respectif des voies de grille (2, 2') de la grille d'avance (1) respectivement voisin de l'élément de séparation de voies de grille (4) parcourt en s'appuyant sur le côté de surface porteuse supérieur (9) d'un premier barreau de grille (7) lors de son mouvement d'avance entre une position d'extrémité avant et une position d'extrémité arrière de sa surface frontale verticale (10) avant en tant que course de déplacement (V).
  8. Grille d'avance (1) selon la revendication 6 ou 7, caractérisée en ce que chaque élément de séparation de voies de grille (4) est dimensionné de telle sorte que les premier et deuxième barreaux de grille (7, 8) des voies de grille (2, 2') de la grille d'avance (1) respectivement voisins de l'élément de séparation de voies de grille (4) ne font pas saillie, dans leur superposition respective, de la surface porteuse plane (15) supérieure de l'élément de séparation de voies de grille (4).
  9. Grille d'avance (1) selon l'une quelconque des revendications 6 à 8, caractérisée en ce que chaque élément de séparation de voies de grille (4) est dimensionné de telle sorte que les côtés avant, comprenant les surfaces frontales verticales (10, 14) respectives, de chaque premier et deuxième barreau de grille (7, 8) des voies de grille (2, 2') de la grille d'avance (1), respectivement voisins de l'élément de séparation de voies de grille (4), ne font pas saillie de la surface de liaison (20) avant de l'élément de séparation de voies de grille (4) lorsque le deuxième barreau de grille (8) respectif se trouve dans sa position d'extrémité avant lors de son mouvement d'avance.
  10. Grille d'avance (1) selon l'une quelconque des revendications 6 à 9, caractérisée en ce que chaque élément de séparation de voies de grille (4) est dimensionné de telle sorte qu'une longueur (L4) de l'élément de séparation de voies de grille (4) est au moins aussi longue qu'une longueur (L7) s'étendant depuis le plan tendu par une surface frontale verticale (14) avant de chaque premier barreau de grille (7) respectivement voisin de l'élément de séparation de voies de grille (4) jusqu'à l'extrémité arrière (35) du côté de surface porteuse supérieur (11) du deuxième barreau de grille (8) reposant sur le premier barreau de grille (7) respectif, lorsque ce deuxième barreau de grille (8) se trouve dans une position d'extrémité avant de son mouvement d'avance.
  11. Grille d'avance (1) selon l'une quelconque des revendications 6 à 10, caractérisée en ce que chaque élément de séparation de voies de grille (4) est dimensionné de telle sorte qu'une longueur (L4") de l'élément de séparation de voies de grille (4) soit au maximum aussi longue qu'une longueur (L10) s'étendant depuis le plan tendu par la surface frontale verticale (14) avant de chaque premier barreau de grille (7) respectivement voisin de l'élément de séparation de voies de grille (4) jusqu'à l'extrémité arrière du deuxième barreau de grille (8) reposant sur le premier barreau de grille (7), lorsque ce deuxième barreau de grille (8) se trouve dans sa position d'extrémité avant de son mouvement d'avance.
  12. Grille d'avance (1) selon l'une quelconque des revendications 6 à 11, caractérisée en ce que chaque élément de séparation de voies de grille (4) est dimensionné de telle sorte qu'une hauteur (H4) de chaque élément de séparation de voies de grille (4) est au moins égale à la hauteur totale qui s'étend pour les premier et deuxième barreaux de grille (7, 8) respectivement voisins de l'élément de séparation de voies de grille (4) depuis le côté inférieur (22) de la surface d'appui (23) du premier barreau de grille (7) jusqu'au côté de surface porteuse supérieur (11) du deuxième barreau de grille (8) reposant sur celle-ci.
  13. Grille d'avance (1) selon l'une quelconque des revendications 6 à 12, caractérisée en ce que chaque élément de séparation de voies de grille (4) est dimensionné de telle sorte que la ou une hauteur (H4) s'étendant depuis le côté d'appui inférieur (26) de la surface d'appui (17) de l'élément de séparation de voies de grille (4) jusqu'au côté porteur supérieur (27) de la surface porteuse (15) de l'élément de séparation de voies de grille (4) soit égale aux hauteurs (H7, H8) individuelles additionnées d'un premier barreau de grille (7) respectivement voisin de l'élément de séparation de voies de grille (4) et d'un deuxième barreau de grille (8) reposant sur celle-ci.
  14. Grille d'avance (1) selon l'une quelconque des revendications 6 à 13, caractérisée en ce que chaque premier et deuxième barreau de grille (7, 8) présente la même hauteur (H7, H8) s'étendant depuis le côté inférieur (22, 24) de la surface d'appui (23, 25) du barreau de grille (7, 8) respectif jusqu'au côté de surface porteuse supérieur (9, 11) du barreau de grille (7, 8) respectif et l'élément de séparation de voies de grille (4) est réalisé dans sa hauteur (H4) s'étendant depuis le côté d'appui inférieur (26) de la surface d'appui (17) de l'élément de séparation de voies de grille (4) jusqu'au côté porteur supérieur (27) de la surface porteuse (15) de l' élément de séparation de voies de grille (4) de façon deux fois plus élevée que la hauteur (H7, H8) respective du premier ou du deuxième barreau de grille (7, 8).
  15. Grille d'avance (1) selon l'une quelconque des revendications 6 à 14, caractérisée en ce que chaque élément de séparation de voies de grille (4) est dimensionné de telle sorte que la surface porteuse plane (15) supérieure de l'élément de séparation de voies de grille (4) est réalisée de manière aussi longue ou plus courte que le côté de surface porteuse supérieur (9, 11) de chaque premier et/ou deuxième barreau de grille (7, 8) respectivement voisin de l'élément de séparation de voies de grille (4).
  16. Grille d'avance (1) selon l'une quelconque des revendications 6 à 15, caractérisée en ce que chaque élément de séparation de voies de grille (4) est dimensionné de telle sorte que la surface frontale verticale (16) de l'élément de séparation de voies de grille (4) présente une hauteur (H16) qui est, de préférence au moins sensiblement, égale à la hauteur (H 10, H14) de la surface frontale verticale (10, 14) avant de chaque premier et/ou deuxième barreau de grille (7, 8) respectivement voisin de l'élément de séparation de voies de grille (4).
  17. Grille d'avance (1) selon l'une quelconque des revendications 6 à 16, caractérisée en ce que chaque élément de séparation de voies de grille (4) est dimensionné de telle sorte que la longueur (L6) s'étendant depuis le bord inférieur marginal (30.3) de la surface frontale verticale (16) de l'élément de séparation de voies de grille (4) jusqu'à la ligne verticale (34) tracée vers le bas à partir du centre d'un cercle inscrit (33) remplissant le logement de support de barreau de grille arrière inférieur (18) de l'élément de séparation de voies de grille (4) est égale à la longueur (L11) s'étendant depuis un bord inférieur marginal (30.1) de la surface frontale verticale (14) de chaque premier barreau de grille (7) respectivement voisin de l'élément de séparation de voies de grille (4) jusqu'à la verticale tracée vers le bas à partir du centre d'un cercle inscrit remplissant un logement de support de barreau de grille arrière inférieur (31) du premier barreau de grille (7) et/ou est égale à la longueur (L12) s'étendant depuis un bord inférieur marginal (30.2) de la surface frontale verticale (10) de chaque deuxième barreau de grille (8) respectivement voisin de l'élément de séparation de voies de grille (4) jusqu'à la verticale tracée vers le bas à partir du centre d'un cercle inscrit remplissant un logement de support de barreau de grille arrière inférieur (32) du deuxième barreau de grille (8).
  18. Grille d'avance (1) selon l'une quelconque des revendications 6 à 17, caractérisée en ce que chaque élément de séparation de voies de grille (4) est dimensionné de telle sorte que sa largeur (B4) est aussi grande ou deux fois plus grande que la largeur (B7, B8) de chaque premier et/ou deuxième barreau de grille (7, 8) respectivement voisin de l'élément de séparation de voies de grille (4).
  19. Grille d'avance (1) selon l'une quelconque des revendications 6 à 18, caractérisée en ce que le nombre d'éléments de séparation de voies de grille (4) formant la barre centrale (13) est deux fois plus petit que la somme des premiers barreaux de grille fixes et deuxièmes barreaux de grille mobiles par avance (7, 8) respectivement disposés dans chacune des deux rangées longitudinales (5) s'appliquant contre les côtés longitudinaux (42, 43) opposés de la barre centrale (13).
  20. Grille d'avance (1) selon l'une quelconque des revendications 6 à 19, caractérisée en ce que le nombre d'éléments de séparation de voies de grille (4) formant la barre centrale (13) est deux fois plus petit que le nombre de rangées transversales (6), formées de premiers barreaux de grille fixes et de deuxièmes barreaux de grille mobiles par avance (7, 8) de la ou des voies de grille (2, 2') voisines de la barre centrale (13).
  21. Grille d'avance (1) selon l'une quelconque des revendications 6 à 20, caractérisée en ce que chaque élément de séparation de voies de grille (4) est réalisé en tant que composant remplaçable individuellement de la barre centrale (13) et est disposé de manière remplaçable entre deux voies de grille (2, 2') de la grille d'avance (1).
  22. Grille d'avance (1) selon l'une quelconque des revendications 6 à 21, caractérisée en ce qu'elle est réalisée en deux voies avec deux voies de grille (2, 2') séparées par une séparation de voies de grille (3, 3') réalisée en tant que barre centrale (13).
  23. Grille d'avance (1) selon l'une quelconque des revendications 6 à 22, caractérisée en ce que le logement de support de barreau de grille arrière (18) de chaque élément de séparation de voies de grille (4) repose sur un support de barreau de grille (36), de préférence un barreau rond, monté de manière fixe.
  24. Grille d'avance (1) selon l'une quelconque des revendications 6 à 23, caractérisée en ce que le logement de support de barreau de grille arrière (18) de chaque élément de séparation de voie de grille (4) et le logement de support de barreau de grille arrière (31) de chaque premier barreau de grille (7) reposent sur le même support de barreau de grille (29, 36), de préférence un barreau rond, monté de manière fixe.
EP17761813.9A 2017-02-17 2017-06-28 Grille d'avance dotée d'éléments de séparation de voies de grille Active EP3583357B1 (fr)

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DE102022109943A1 (de) 2022-04-25 2023-10-26 Standardkessel Baumgarte Gmbh Rostbahntrennungselement
EP4361500A1 (fr) 2022-10-26 2024-05-01 Hitachi Zosen Inova AG Élément de limitation de la bande de grille pour une grille de combustion

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JPH0678812B2 (ja) * 1991-06-26 1994-10-05 ティー．アイ．アール．ユー．−トレトマン アンデュストリエル デ レジデュ ユルバン 密封梁
EP0650017B1 (fr) * 1993-10-21 1998-04-22 Asea Brown Boveri Ag Grille pour un foyer
DE19648128C2 (de) * 1996-11-21 2002-11-07 Alstom Rost für eine Feuerungsanlage
DE10011791B4 (de) * 2000-03-13 2004-01-29 Fisia Babcock Environment Gmbh Fluidgekühltes Mittelbalkenelement für mehrbahnige Verbrennungsroste und Mittelbalken
JP2002089808A (ja) * 2000-09-12 2002-03-27 Kubota Corp ストーカ式焼却炉
JP4742314B2 (ja) * 2006-03-24 2011-08-10 地方独立行政法人北海道立総合研究機構 耐熱鋳鋼、焼却炉及び焼却炉の火格子

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JP2020507739A (ja) 2020-03-12
WO2018149516A1 (fr) 2018-08-23
KR20200002796A (ko) 2020-01-08

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