EP1219898B1 - Bloc de grille faisant partie d' une grille pour une installation d' incinération de déchets - Google Patents

Bloc de grille faisant partie d' une grille pour une installation d' incinération de déchets Download PDF

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Publication number
EP1219898B1
EP1219898B1 EP00128676A EP00128676A EP1219898B1 EP 1219898 B1 EP1219898 B1 EP 1219898B1 EP 00128676 A EP00128676 A EP 00128676A EP 00128676 A EP00128676 A EP 00128676A EP 1219898 B1 EP1219898 B1 EP 1219898B1
Authority
EP
European Patent Office
Prior art keywords
grate
block
cooling
block body
holding part
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
EP00128676A
Other languages
German (de)
English (en)
Other versions
EP1219898A1 (fr
Inventor
Bruno Andreoli
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Zosen Innova AG
Original Assignee
Von Roll Umwelttechnik AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DE50012995T priority Critical patent/DE50012995D1/de
Application filed by Von Roll Umwelttechnik AG filed Critical Von Roll Umwelttechnik AG
Priority to EP00128676A priority patent/EP1219898B1/fr
Priority to AT00128676T priority patent/ATE330179T1/de
Priority to AU2002216019A priority patent/AU2002216019A1/en
Priority to JP2002554437A priority patent/JP2004517291A/ja
Priority to PCT/EP2001/012885 priority patent/WO2002053971A1/fr
Priority to TW090128137A priority patent/TW526320B/zh
Publication of EP1219898A1 publication Critical patent/EP1219898A1/fr
Application granted granted Critical
Publication of EP1219898B1 publication Critical patent/EP1219898B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H3/00—Grates with hollow bars
    • F23H3/02—Grates with hollow bars internally cooled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H17/00—Details of grates
    • F23H17/12—Fire-bars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • 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 block as part of a grate for a plant for the thermal treatment of waste according to the preamble of claim 1.
  • Document EP-A-0 921 354 discloses such a grate block.
  • a grate for a firing system which is constructed of grate blocks, which are provided with meandering, tubular cooling elements. These cooling elements or cooling tubes are poured into an upper bearing surface for the waste to be treated having block body.
  • the production of these grate blocks is expensive (expensive casting model production, complex casting process).
  • a perfect connection between the cooling tubes and the casting can not be ensured, which has negative effects on the heat transfer with it.
  • the present invention has for its object to provide a grate block of the type mentioned, which is simple and inexpensive to manufacture, in which the complex pressure and tightness control of the block body produced as a casting is eliminated, and adapted in a simple manner to different requirements can be.
  • the cooling elements can be fixed by releasably connecting a lower holding part to the block body in a predetermined contact position with the block body and the block body has no inaccessible cavities
  • the block body can be produced inexpensively in a simple Standardgiessvon, and does not have a complex printing and tightness test. Since the cooling elements and the block body are separated from each other and can expand differently, the risk of leaks or cracks of the cooling elements, which also consist of different materials and can have virtually any shape and cross-section, largely eliminated.
  • Fig. 1 shows a grate block 1 as part of a grate for a plant for the thermal treatment of waste.
  • the grate block 1 comprises a block body 2, made as a casting, of a substantially U-shaped cross section having a rear wall 3, a top wall 4 and a front wall 5.
  • the front wall 5 of the block body 2 is connected to a foot 7.
  • the upper wall 4 has a support surface 8 for the waste to be treated.
  • the rear wall 3 is provided with at least one or more hooks 6, of which only one can be seen in Fig. 1, and which are intended for suspending the grate block 1 on a block holding member.
  • a plurality of juxtaposed, suspended on the common block holding member and interconnected, preferably screwed grate blocks form a grate block row.
  • the rust has several one behind the other step-like arranged rust block rows.
  • a stationary grate block row is followed by a movable row of grate blocks.
  • the movable rows of grate blocks exert a pushing and shearing action on the waste material located on the grate, so that new waste surfaces are repeatedly exposed to the thermal treatment in the firing space while the waste material moves forward at the same time.
  • Each grate block 1 lies with its foot 7 on the support surface 8 of the downstream grate block 1 relative to slidably.
  • Fig. 1 shows as an example provided for cooling the block body 2 cooling element 10 in the form of a meandering arranged, a cooling channel 11 forming tube which is connected to a cooling water system.
  • the term "cooling water” is to be understood as meaning both the water used in the rule and any other suitable cooling liquid.
  • the cooling element 10 extends below the support surface 8, extends to the front wall 5 and has up to the foot 7 lowering portions 10a.
  • the cooling element 10 is held by means of an attachable from below to the block body 2 and releasably connectable to the block body 2 holding member 15 in a contact position with the block body 2.
  • the flat, flat possibly ribbed (in Fig.
  • a downwardly open groove or recess 17 is poured, which corresponds in shape to the cooling element 10 in opposite directions (the Heatsink 10 can serve as a model).
  • the cooling element 10 and Accordingly, the recess 17 may have a different course than shown in Fig. 1, or it could be provided more cooling elements 10 and recesses 17 per grate block 1.
  • the cooling elements or the cooling channels can-as shown on some embodiments shown in FIGS. 2 to 4-have different cross-sectional shapes.
  • a conventional cooling tube 20 of round cross-section Figure 2
  • Cooling tubes or cooling elements 21 of a square or rectangular cross-section Fig. 3
  • cooling tubes or cooling elements 22 come with a triangular cross-section (Fig. 4) in question.
  • the cooling elements can also be provided with ribs 25, as shown by the example of the cooling elements 23, 24 of FIGS. 2 and 3.
  • a cooling element can also comprise, for example, a cooling plate 28 (or a plurality of cooling plates) or other heat sinks, as shown by the example of the cooling element 29 shown in FIG. 4, which has a cooling plate 28 welded to three cooling tubes 20 '.
  • Such cooling plates or heat sinks can be attached to thermally sensitive areas.
  • the recess or recesses 17 are preferably coated or filled with a heat-conducting material, for example with a heat conducting compound, prior to insertion of the cooling element or elements 10 or 20 to 24 or 29.
  • the cooling elements 10 or 20 to 24 or 29 are pressed into the heat conducting compound, the overflowing heat conducting compound is scraped off and then the cooling elements 10 or 20 to 24 or 29 are fixed by means of the holding part 15.
  • the heat-conductive material is designated 30.
  • the holding part 15 is preferably provided with An horrolinn 32 which - as shown in Fig.
  • cooling elements 10 and 20 to 24 and 29 respectively abut and fix them in their position relative to the block body 2.
  • the cooling elements 10 or 20 to 24 or 29 could be fixed directly in position by the upper bearing surface 33 of the holding part 15.
  • the releasable fixation or connection of the holding part 15 with the block body 2 is not apparent from the drawing; in Fig. 1 holes provided only for the connecting screws in the holding part 15 are shown and designated 37. Instead of a screw connection, a wedge connection, a quick-release connection or another type of detachable connection could also be considered.
  • heat-conductive material may also be fine steel wool or the like. used and inserted into the recesses 17 before pressing the one or more cooling elements.
  • heat-conducting compounds for example graphite pastes available on the market, is particularly advantageous since they have higher thermal conductivities than steel.
  • the holding part 15 can be made of different materials (steel, aluminum, etc.). It can be a casting or a sheet. It can also be designed as a grid. Insulation (mass, mat, foam glass, etc.) can be inserted into the holding part 15 before assembly between the individual pressure strips 32 as required, which is indicated in FIG. 1 by the reference numeral 38 is indicated. The insulation can also be pressed in as a spray mass after assembly with pressure and fill cavities.
  • the known from Fig. 2 to 4 cooling elements 10 and 20 to 24 and 29 instead of the cast into the block body bottom 16 recesses 17 in corresponding recesses in the upper surface of the holding part 15 inserted and pressed together with this to the block body bottom 16 and fixed in the contact position.
  • the heat-conducting compound is preferably also painted between the upper bearing surface 33 of the holding part 15 and the block underside 16 (this also applies to the variant described with reference to FIGS. 1 to 4).
  • thermally conductive material can be dispensed with special training of cooling elements (soft or rough surface, large contact area).
  • cooling elements soft or rough surface, large contact area.
  • the contact surface are roughened to improve the contact.
  • the cooling elements can be made of a variety of materials and have virtually any shape.
  • the holding part 15 with the cooling elements can be easily replaced from the grate base.
  • the inventive solution allows a modular design adapted to the thermal load of the grate (pre-drying zone to Ausbrandzone). Adapting to different requirements and loads is easy; The change in the shape and dimensions of the cooling elements can be accommodated with simple model changes.
  • the variant with the arranged in recesses 17 of the holding member 15 and fixed together with this in the contact position with the block body 2 cooling elements in which no recesses 17 in the block body 2 must be present, also offers good possibility for retrofitting existing, originally for grate blocks provided with another cooling system (air cooling, other type water cooling) block bodies, which can now be equipped according to the invention with a manufacturing technology simpler and yet operationally safer and adaptable to different requirements cooling system.
  • another cooling system air cooling, other type water cooling
  • the inventive cooling system allows the use of a common, connected to a water inlet and water outlet cooling element, for example, the meandering configured cooling tube 10 of FIG. 1, for all in a block row juxtaposed grate blocks 1. So far, it was customary to connect the individual, sealed in block bodies cooling pipes adjacent grate blocks via tubular spacers together. The fact that now the spacers can be omitted, less leaks arise and the assembly is simplified.
  • Fig. 5 shows another possible grate block variant in which the lower, applied to the block body 2 and releasably connected thereto holding part 15 'itself forms a cooling element and at least one cooling channel 11' has.
  • holding part 15 ' is a casting, in which preferably the cooling channel 11' (or the cooling channels 11) is poured directly.
  • the thermally heavily loaded block body 2 no inaccessible cavities, so that the risk of voids and cracking is eliminated, and the block body 2 produced in the standard casting and can be used without expensive testing. It can not get any cooling water into the firebox.
  • the holding part 15 ' can be optimally designed and easily manufactured by casting.
  • block body 2 requires no special grooves or recesses in this embodiment, in turn, already existing block body (possibly with minor Gussmodellanpassept) with the holding part or cooling element 15 'are equipped.
  • the releasable connection of the holding part 15 'with the block body can in turn be effected for example by means of screws, as indicated in Fig. 5 (reference numeral 40), or be accomplished in any other manner known per se.
  • a layer of heat-conducting material is preferably applied between the holding part 15 'and the block bottom side 16, or the contact is improved by a special design of the contact surface (for example a roughened surface).

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
  • Processing Of Solid Wastes (AREA)
  • Cultivation Of Plants (AREA)

Claims (14)

  1. Bloc de grille faisant partie d'une grille destinée à une installation de traitement thermique de déchets, comportant un corps de bloc (2) réalisé sous forme pièce de fonderie qui présente une surface de support (8) destinée aux déchets à traiter, et comportant au moins un élément de refroidissement (10 ; 20 ; 21 ; 22 ; 23 ; 24 ; 29) agencé au-dessous de la surface de support (8) et présentant un canal de refroidissement (11 ; 11') raccordé à un système d'eau de refroidissement, caractérisé par une partie de retenue inférieure (15 ; 15') susceptible d'être amenée en position de contact avec le corps de bloc (2) et d'être reliée de façon détachable à celui-ci, l'élément de refroidissement (10 ; 20 ; 21 ; 22 ; 23 ; 24 ; 29) étant susceptible d'être fixé dans une position prédéterminée de contact avec le corps de bloc (2) par la liaison de la partie de retenue (15 ; 15') avec le corps de bloc (2).
  2. Bloc de grille selon la revendication 1, caractérisé en ce que l'élément de refroidissement (10 ; 20 ; 21 ; 22 ; 23 ; 24 ; 29) est susceptible d'être fixé dans un évidement (17) en forme de gorge dans le corps de bloc (2) au moyen de la partie de retenue (15).
  3. Bloc de grille selon la revendication 1, caractérisé en ce que l'élément de refroidissement (10 ; 20 ; 21 ; 22 ; 23 ; 24 ; 29) est logé dans un évidement en forme de gorge de la partie de retenue (15) et est susceptible d'être fixé, conjointement avec celle-ci, en position de contact avec le corps de bloc (2).
  4. Bloc de grille selon l'une ou l'autre des revendications 2 et 3, caractérisé en ce qu'il est prévu entre l'élément de refroidissement (10 ; 20 ; 21 ; 22 ; 23 ; 24 ; 29) et l'évidement en forme de gorge (17) un matériau thermiquement conducteur (30).
  5. Bloc de grille selon la revendication 4, caractérisé en ce qu'à titre de matériau thermiquement conducteur (30) sert une pâte thermiquement conductrice, de préférence une pâte de graphite.
  6. Bloc de grille selon la revendication 4, caractérisé en ce qu'à titre de matériau thermiquement conducteur (30) sert de la laine d'acier fine.
  7. Bloc de grille selon l'une des revendications 1 à 6, caractérisé en ce que l'élément de refroidissement (10 ; 20 ; 21 ; 22 ; 23 ; 24 ; 29) comprend une partie tubulaire formant le canal de refroidissement (11) de section transversale circulaire ou polygonale.
  8. Bloc de grille selon la revendication 7, caractérisé en ce que l'élément de refroidissement (23 ; 24) est pourvu de nervures (25).
  9. Bloc de grille selon l'une ou l'autre des revendications 7 et 8, caractérisé en ce que l'élément de refroidissement (29) comprend une plaque de refroidissement (28).
  10. Bloc de grille selon la revendication 1, caractérisé en ce que la partie de retenue (15') susceptible d'être reliée de façon détachable au corps de bloc (2) forme l'élément de refroidissement et est pourvue d'au moins un canal de refroidissement (11') raccordé au système d'eau de refroidissement.
  11. Bloc de grille selon la revendication 10, caractérisé en ce que le canal de refroidissement (11') est intégré par moulage dans la partie de retenue (15').
  12. Bloc de grille selon l'une ou l'autre des revendications 10 et 11, caractérisé en ce qu'il est prévu entre le corps de bloc (2) et la partie de retenue (15') une couche de matériau thermiquement conducteur (30).
  13. Grille comprenant des rangées de blocs de grille, formées par des blocs de grille (1) juxtaposés, selon l'une des revendications 1 à 12.
  14. Grille selon la revendication 13, caractérisée en ce que les blocs de grille (1) d'une rangée de blocs de grille sont équipés d'un élément de refroidissement (10 ; 20 ; 21 ; 22 ; 23 ; 24 ; 29) tubulaire commun traversant tous les blocs de grille (1) et relié à une entrée d'eau ainsi qu'à une sortie d'eau.
EP00128676A 2000-12-29 2000-12-29 Bloc de grille faisant partie d' une grille pour une installation d' incinération de déchets Expired - Lifetime EP1219898B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP00128676A EP1219898B1 (fr) 2000-12-29 2000-12-29 Bloc de grille faisant partie d' une grille pour une installation d' incinération de déchets
AT00128676T ATE330179T1 (de) 2000-12-29 2000-12-29 Rostblock als teil eines rostes für eine anlage zur thermischen behandlung von abfall
DE50012995T DE50012995D1 (de) 2000-12-29 2000-12-29 Rostblock als Teil eines Rostes für eine Anlage zur thermischen Behandlung von Abfall
JP2002554437A JP2004517291A (ja) 2000-12-29 2001-11-08 廃棄物の熱処理プラントにおける火格子部分を形成する火格子ブロック
AU2002216019A AU2002216019A1 (en) 2000-12-29 2001-11-08 Grate block forming part of a grate in a waste heat-treatment plant
PCT/EP2001/012885 WO2002053971A1 (fr) 2000-12-29 2001-11-08 Bloc de grillage en tant que partie d'une grille d'une installation de traitement thermique de dechets
TW090128137A TW526320B (en) 2000-12-29 2001-11-13 Grate block as part of a grate for a plant for the thermal treatment of waste

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00128676A EP1219898B1 (fr) 2000-12-29 2000-12-29 Bloc de grille faisant partie d' une grille pour une installation d' incinération de déchets

Publications (2)

Publication Number Publication Date
EP1219898A1 EP1219898A1 (fr) 2002-07-03
EP1219898B1 true EP1219898B1 (fr) 2006-06-14

Family

ID=8170857

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00128676A Expired - Lifetime EP1219898B1 (fr) 2000-12-29 2000-12-29 Bloc de grille faisant partie d' une grille pour une installation d' incinération de déchets

Country Status (7)

Country Link
EP (1) EP1219898B1 (fr)
JP (1) JP2004517291A (fr)
AT (1) ATE330179T1 (fr)
AU (1) AU2002216019A1 (fr)
DE (1) DE50012995D1 (fr)
TW (1) TW526320B (fr)
WO (1) WO2002053971A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012507688A (ja) * 2008-11-05 2012-03-29 ヒタチ ゾウセン イノバ アーゲー 空冷式火格子ブロック

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1355112A1 (fr) * 2002-04-17 2003-10-22 Seghers Keppel Technology Group Barreau de grille d'incinérateur, méthode pour son refroidissement et procédé pour sa fabrication
US7867906B2 (en) * 2005-06-22 2011-01-11 Nec Corporation Semiconductor device and method for manufacturing same
KR100635407B1 (ko) * 2005-07-11 2006-10-19 한국과학기술연구원 수랭식 화격자
PL1760400T3 (pl) 2005-09-06 2009-08-31 Ernst Schenkel Chłodzony wodą element rusztu
JP5113829B2 (ja) * 2006-03-17 2013-01-09 ドイコス、インベスティメンツ、リミテッド 当板を有する液冷式火格子／火床
CH701280B1 (de) * 2007-08-22 2010-12-31 Doikos Investments Ltd Flüssigkeitsgekühlte Rostplatte mit Verschleissplatten und aus solchen Rostplatten bestehender Stufenrost.
ES2677016T3 (es) 2011-09-01 2018-07-27 Ernst Schenkel Rejilla para la combustión de materiales sólidos

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2608958A (en) * 1949-08-20 1952-09-02 Charles M Hazelton Grate bar
DE19648128C2 (de) 1996-11-21 2002-11-07 Alstom Rost für eine Feuerungsanlage
DE19753981C2 (de) * 1997-12-05 2000-04-06 Alstom Energy Syst Gmbh Flüssigkeitsgekühlte Rostplatte
JP2000240926A (ja) * 1999-02-23 2000-09-08 Mitsubishi Kakoki Kaisha Ltd 水冷式火格子

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012507688A (ja) * 2008-11-05 2012-03-29 ヒタチ ゾウセン イノバ アーゲー 空冷式火格子ブロック

Also Published As

Publication number Publication date
DE50012995D1 (de) 2006-07-27
TW526320B (en) 2003-04-01
ATE330179T1 (de) 2006-07-15
EP1219898A1 (fr) 2002-07-03
JP2004517291A (ja) 2004-06-10
WO2002053971A8 (fr) 2003-11-20
WO2002053971A1 (fr) 2002-07-11
AU2002216019A1 (en) 2002-07-16

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