EP0825383B1 - Plaque de grille - Google Patents

Plaque de grille Download PDF

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Publication number
EP0825383B1
EP0825383B1 EP97111615A EP97111615A EP0825383B1 EP 0825383 B1 EP0825383 B1 EP 0825383B1 EP 97111615 A EP97111615 A EP 97111615A EP 97111615 A EP97111615 A EP 97111615A EP 0825383 B1 EP0825383 B1 EP 0825383B1
Authority
EP
European Patent Office
Prior art keywords
grate
plate
cover segment
cooling agent
plates
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
EP97111615A
Other languages
German (de)
English (en)
Other versions
EP0825383A3 (fr
EP0825383A2 (fr
Inventor
Rolf Merz
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.)
GE Power Systems GmbH
Original Assignee
Alstom Power Boiler GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alstom Power Boiler GmbH filed Critical Alstom Power Boiler GmbH
Publication of EP0825383A2 publication Critical patent/EP0825383A2/fr
Publication of EP0825383A3 publication Critical patent/EP0825383A3/fr
Application granted granted Critical
Publication of EP0825383B1 publication Critical patent/EP0825383B1/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
    • 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
    • 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
    • F23H2900/17002—Detachable or removable worn-out parts

Definitions

  • the invention relates to a grate plate for feed grates, in particular for feed grates from Waste incineration plants, the feed grate consisting of several mutually movable, there are stepped grate plate rows and the grate plate extends over the entire width of the feed grate or the rust track and this through water or with one opposite Water is cooled by high-boiling coolant.
  • feed grids are by transversely to the direction of transport of the material extending, gradually overlapping rows of grate plates or grate bars. Every second row of grate plates or grate bars usually leads to the transport of the firing material a thrust movement caused by a drive device.
  • the waste becomes one transported and the other mixed and stirred.
  • the waste on the feed grate it is dried, preheated, degassed and gasified one after the other and burned out the combustible.
  • EP 0 621 449 B1 has disclosed a water-cooled grate plate which overlaps extends the entire width of the combustion grate or grate track, which is made of sheet metal, forms a hollow body with top and bottom and at least on one side of the bottom a connection piece and on the other side at least one discharge pipe for the Has supply and discharge of a liquid medium flowing through them for their temperature control.
  • a disadvantage of the known grate plate has been shown that when a replacement is required a grate plate, z. B. by mechanical abrasion, by thermal or Corrosive wear or damage, one complete grate plate replaced must become. Due to the grate plates, some of which are up to 3.0 m wide, problems arise with the Removing and installing such grate plates due to their high weight and bulk. It is also not justifiable from an economic point of view, a partially worn grate plate to be exchanged completely.
  • the object of the present invention is to provide a grate plate, the aforementioned Avoids disadvantages.
  • FIG. 1 shows sections of the schematic longitudinal section through one of several rows of grate plates 26 formed grate 25 for the combustion of waste.
  • the feed grate 25 is usually slightly inclined in the transport direction of the firing material.
  • Transport and mixing or agitation of the firing material is due to the pushing movement of mechanical or hydraulic drive devices driven grate plate carrier 28 or rows of grate plates 26 causes, usually every second row of grate plates 26 is driven and the intermediate rows of grate plates 26 are stationary.
  • Take over the grate plate carrier 28 the function of supporting the grate plates 1 and also the pushing movement.
  • the feeder The primary combustion air to the firing material comes through the below the feed grate 25 arranged air zones 27 and the nozzle-shaped in the grate plates 1 Air gaps 6, the air zones 27 in the longitudinal direction and possibly also in the transverse direction of the feed grate 25 are divided into several zones.
  • grate plate 1 according to the invention, which extends over the entire width of the feed grate 25 or a grate track of a multi-track feed grate 25 and the from a base body 2 and, depending on the width of the grate plate 1, from one or more cover segments 3 exists.
  • the base body 2 forms the grate plate base 4, which on the following, underlying row of grate plates 26 rests and forms the cover segment (s) 3 form the grate plate body 5, the front end of which closes with the grate plate head 22.
  • the grate plate 1 enables the partial replacement of cover segments 3, which are more exposed to the firing material than the base body 2 and are therefore more worn or damaged.
  • the base body 2 consists of two side plates 7, one bottom plate 8 arranged therebetween, depending on the width, with one or more if necessary Intermediate plates 9 and at least one, flowed through by a coolant and between the Side plates 7 or, in the case of existing intermediate plates 9, also between side plates 7 and intermediate plates 9 and between the intermediate plates 9 arranged hollow profiles 10 is formed.
  • intermediate plates 9 these are preferably across the width of the base body 2 evenly distributed
  • the hollow profile 10 is preferably formed as a rectangular hollow profile and is in the longitudinal direction Grate plate 1 (i.e. in the direction of transport) seen opposite the front edge of the back plate 14 and lower plate 15 (grate plate head 22) of the cover segment 3 set back in such a way that between the lower plate 15 and the upper edge of the hollow profile 10, a nozzle-shaped air gap 6 is formed for supplying primary combustion air into the firing material.
  • the nozzle-shaped Air gap 6 is thus formed by base body 2 and cover segment 3 and extends across the width of the grate plate 1, interrupted only if necessary by intermediate plates 9.
  • the front edge of the base plate 8 is also opposite the front edge of the back plate 14 set back to the main load of the Brennguttransportes to the front to shift the back plate 14.
  • a grate plate 1 extends depending on the width of the grate plate 1 between two side plates 7 or between side plates 7 and Intermediate plates 9 and possibly between the intermediate plates 9 of a base body 2.
  • the cover segment 3 consists of two side plates 11, support element 13 arranged between them, Back and bottom plate 14, 15.
  • Side plates 11, support element 13, back and bottom plate 14, 15 form one of a coolant, e.g. B. water, flowed through cavity 12, which with several, a labyrinth-forming partition plates 16 is provided.
  • a coolant e.g. B. water
  • the cover segment 3 and the base body 2 each have separate coolant inflows and drains 18, 19 which are arranged to the side of the air zones 27. At least one each Inflow 18 is on one side of the lower plate 15 of the cover segment 3 and the hollow profile 10 of the base body 2 and at least one drain 19 is on the other side of the lower plate 15 of the cover segment 3 and the hollow profiles 10 of the base body 2 are arranged. Inlets and outlets 18, 19 are equipped with devices 20, for. B. a connecting piece for connection formed by connecting lines, not shown. For grate plates 1 with several in a row arranged hollow profiles 10 and cover segments 3 is the coolant drain 19th through a connecting line 21 to the coolant inflow 18 of the adjacent hollow profile 10 or cover segment 3 connected.
  • the lower plate 15 is angled in the area of the grate plate head 22 such that the middle Outflow angle ⁇ of the nozzle-shaped air gap 6 is at an angle to the horizontal from 10 - 60 °.
  • Base body 2 and cover segment 3 are preferably the same from steel sheets and profiles Made of material and welded in each case.
  • the base plate 8 is opposite the back plate 14 formed from more wear-resistant material.
  • the cover segment (s) 3 are with their side plates 11 by at least two Connecting means 17, e.g. B. screw connection, with the side plates 7 and intermediate plates 9th of the base body 2 connected.
  • the air gap 6 can be arranged in parallel according to FIG. 8 by inserting a guide plate 23 Air gap walls should be formed. A divergent air gap 6, if necessary, is also through appropriate design of the lower plate 15 and the guide plate 23 possible (not shown).
  • the upper part of the hollow profile 10 is designed in accordance with the contour of the guide plate 23 or in another desired shape be (not shown).

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Laminated Bodies (AREA)
  • Table Devices Or Equipment (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)

Claims (8)

  1. Plaque à grilles pour des grilles d'avance, en particulier pour des grilles d'avance installées dans des usines d'incinération des ordures ménagères, la grille d'avance se composant de plusieurs lignes de plaques à grilles étant disposées en forme de marches et étant mouvantes, et la plaque à grilles couvrant la largeur entière de la grille d'avance ou de la surface de la grille, qui est refroidie par de l'eau ou par un agent refroidisseur, qui dispose d'un point d'ébullition plus haut que celui de l'eau, et
    la plaque à grilles (1) se composant d'un bâti de base (2), qui forme un pied de plaque à grilles (4), et au moins d'un segment couvrant (3), qui forme un corps de plaques à grilles (5), et le segment couvrant (3) et le bâti de base (2) étant connectés d'une façon démontable,
    le bâti de base (2) et le segment couvrant (3) étant chacun équipés au moins d'une installation d'alimentation et d'écoulement d'agent refroidisseur (18, 19),
    et une fente d'aération (6) étant existante entre le bâti de base (2) et le segment couvrant (3).
  2. Plaque à grilles selon la revendication 1, caractérisée en ce que
    le bâti de base (2) se compose de deux plaques latérales (7), d'une plaque de base (8), qui est disposée entre les deux, d'une ou de plusieurs plaques intermédiaires (9), le cas échéant, et au moins d'un profilé creux (10), qui est passé par l'agent refroidisseur et qui est disposé entre les plaques latérales (7) ou entre les plaques latérales (7) et les plaques intermédiaires (9) ou entre les plaques intermédiaires (9), le profilé creux (10) étant équipé de l'installation (20) prévue pour l'alimentation de l'agent refroidisseur (18) placée à l'un côté du profilé creux (10) et de l'installation (20) prévue pour l'écoulement de l'agent refroidisseur (19) placée à l'autre côté du profilé creux (10), et en cas de profilés creux (10), qui sont divisés sur la largeur du bâti de base (2), l'installation (20) d'écoulement de l'agent refroidisseur (19) est connectée par un conduit de raccordement (21) à l'installation (20) d'alimentation de l'agent refroidisseur (18) du profilé creux avoisinant (10),
    le segment couvrant (3) se compose de deux plaques latérales (11) et d'un élément support (13), qui est disposé entre les deux, ainsi que d'une tôle arrière et d'une tôle inférieure (14, 15), les plaques latérales (11), l'élément support (13), la tôle arrière et la tôle inférieure (14, 15) formant un espace vide (12), qui est passé par l'agent refroidisseur, ainsi que de plusieurs tôles de séparation (16), qui forment un labyrinthe dans l'espace vide (12), la tôle inférieure (15) étant équipée de l'installation (20) prévue pour l'alimentation de l'agent refroidisseur (18) placée à l'un côté du segment couvrant (3) et de l'installation (20) prévue pour l'écoulement de l'agent refroidisseur (19) placée à l'autre côté du segment couvrant (3), et en cas de plusieurs segments couvrants (3) l'installation (20) pour l'écoulement de l'agent refroidisseur (19) est connectée par un conduit de raccordement (21) à l'installation (20) pour l'alimentation de l'agent refroidisseur (18) du segment couvrant avoisinant (3),
    et au moins deux dispositifs (17) sont installés à chaque plaque latérale (7, 11) pour réaliser une connexion démontable du bâti de base (2) et du segment couvrant (3).
  3. Plaque à grilles selon l'une des revendications 1 et 2, caractérisée en ce que le bâti de base (2) et le segment couvrant (3) sont fabriqués de tôle d'acier et, le cas échéant, de profilé en acier.
  4. Plaque à grilles selon l'une des revendications susmentionnées, caractérisée en ce que le matériau de la plaque de base (8) du bâti de base (2) est plus résistant contre l'usure comparé au matériau de la plaque arrière (14) du segment couvrant (3).
  5. Plaque à grilles selon l'une des revendications susmentionnées, caractérisée en ce que le profilé creux (10) est réalisé comme profilé rectangulaire.
  6. Plaque à grilles selon l'une des revendications susmentionnées, caractérisée en ce que la fente d'aération (6) est limitée à sa périphérie supérieure par la plaque inférieure (15) du segment couvrant (3) et à sa périphérie inférieure par le bord supérieure du profilé creux (10) du bâti de base (2) et qu'elle est réalisée en forme de tuyère.
  7. Plaque à grilles selon l'une des revendications susmentionnées, caractérisée en ce que l'angle moyen d'émission α de la fente d'aération en forme de tuyère (6) forme un angle de 10 - 60 ° avec la ligne horizontale.
  8. Plaque à grilles selon l'une des revendications susmentionnées, caractérisée en ce que le bord avant du bâti de base (2) est en retrait comparé au bord avant du segment couvrant (3).
EP97111615A 1996-08-10 1997-07-09 Plaque de grille Expired - Lifetime EP0825383B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19632316 1996-08-10
DE19632316A DE19632316C1 (de) 1996-08-10 1996-08-10 Rostplatte

Publications (3)

Publication Number Publication Date
EP0825383A2 EP0825383A2 (fr) 1998-02-25
EP0825383A3 EP0825383A3 (fr) 1998-09-16
EP0825383B1 true EP0825383B1 (fr) 2002-01-23

Family

ID=7802317

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97111615A Expired - Lifetime EP0825383B1 (fr) 1996-08-10 1997-07-09 Plaque de grille

Country Status (7)

Country Link
EP (1) EP0825383B1 (fr)
AT (1) ATE212429T1 (fr)
CZ (1) CZ291546B6 (fr)
DE (2) DE19632316C1 (fr)
HU (1) HU218993B (fr)
PL (1) PL321534A1 (fr)
SK (1) SK106697A3 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19753981C2 (de) * 1997-12-05 2000-04-06 Alstom Energy Syst Gmbh Flüssigkeitsgekühlte Rostplatte
EP0924464A1 (fr) * 1997-12-19 1999-06-23 KOCH, Theodor Grille d'une installation de combustion et méthode pour son refroidissement
DE19851471A1 (de) * 1998-11-09 2000-05-11 Mitteldeutsche Feuerungs Und U Durchfallarmer Vorschubrostbelag
DE19860552C2 (de) * 1998-12-22 2001-02-08 Mannesmann Ag Kühlbarer Verbrennungsrost
DE19860553C2 (de) * 1998-12-22 2001-03-29 Mannesmann Ag Flüssigkeitsgekühlter Verbrennungsrost
DE19912944C1 (de) * 1999-03-23 2000-07-27 Didier Werke Ag Rostwangen-Abdichtkörper
FR2894012B1 (fr) * 2005-11-28 2008-01-18 Cometal France Sarl Barreau pour grille de four d'incineration
CN112610955A (zh) * 2020-12-18 2021-04-06 上海康恒环境股份有限公司 一种焚烧炉炉排组合式炉排条结构

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2833255A1 (de) * 1978-07-28 1980-02-07 Pauli Gmbh Waermetechnik Luftgekuehlter roststab
IT1235900B (it) * 1985-10-11 1992-12-02 Vaifro Vittorio Bonomelli Griglia di combustione a gradini mobili per combustibili solidi in particolare rifiuti solidi urbani e assimilabili
FR2694376B1 (fr) * 1992-07-31 1994-09-30 A3C Metal Barreau pour grille d'incinération d'ordures ménagères.
CH684118A5 (de) * 1993-04-20 1994-07-15 Doikos Investments Ltd Verfahren zum Verbrennen von Kehricht auf einem Verbrennungsrost sowie Verbrennungsrost zur Ausübung des Verfahrens und Rostplatte für einen solchen Verbrennungsrost.

Also Published As

Publication number Publication date
HU9701047D0 (en) 1997-08-28
EP0825383A3 (fr) 1998-09-16
EP0825383A2 (fr) 1998-02-25
HU218993B (hu) 2001-01-29
SK106697A3 (en) 1998-06-03
HUP9701047A2 (hu) 1998-04-28
DE59706162D1 (de) 2002-03-14
HUP9701047A3 (en) 1999-09-28
PL321534A1 (en) 1998-02-16
DE19632316C1 (de) 1997-09-04
ATE212429T1 (de) 2002-02-15
CZ291546B6 (cs) 2003-04-16
CZ249297A3 (cs) 1998-03-18

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