EP0157920B1 - Rouleau de grille pour grille à rouleaux par exemple d'une installation d'incinération des ordures ou similaire - Google Patents

Rouleau de grille pour grille à rouleaux par exemple d'une installation d'incinération des ordures ou similaire Download PDF

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Publication number
EP0157920B1
EP0157920B1 EP84114826A EP84114826A EP0157920B1 EP 0157920 B1 EP0157920 B1 EP 0157920B1 EP 84114826 A EP84114826 A EP 84114826A EP 84114826 A EP84114826 A EP 84114826A EP 0157920 B1 EP0157920 B1 EP 0157920B1
Authority
EP
European Patent Office
Prior art keywords
grate
bar
roller
roller according
bars
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
Application number
EP84114826A
Other languages
German (de)
English (en)
Other versions
EP0157920B2 (fr
EP0157920A2 (fr
EP0157920A3 (en
Inventor
Sedat Dipl.-Ing. Temelli
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.)
AWG ABFALLWIRTSCHAFTSGESELLSCHAFT MIT BESCHRAENKTE
Original Assignee
Awg Abfallwirtschaftsgesellschaft Wuppertal mbH
Mullverbrennungsanlage Wuppertal 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
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Application filed by Awg Abfallwirtschaftsgesellschaft Wuppertal mbH, Mullverbrennungsanlage Wuppertal GmbH filed Critical Awg Abfallwirtschaftsgesellschaft Wuppertal mbH
Publication of EP0157920A2 publication Critical patent/EP0157920A2/fr
Publication of EP0157920A3 publication Critical patent/EP0157920A3/de
Application granted granted Critical
Publication of EP0157920B1 publication Critical patent/EP0157920B1/fr
Publication of EP0157920B2 publication Critical patent/EP0157920B2/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L1/00—Passages or apertures for delivering primary air for combustion 
    • F23L1/02—Passages or apertures for delivering primary air for combustion  by discharging the air below the fire
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B1/00—Combustion apparatus using only lump fuel
    • F23B1/16—Combustion apparatus using only lump fuel the combustion apparatus being modified according to the form of grate or other fuel support
    • F23B1/165—Combustion apparatus using only lump fuel the combustion apparatus being modified according to the form of grate or other fuel support using roller grate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/002—Incineration of waste; Incinerator constructions; Details, accessories or control therefor characterised by their grates
    • 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
    • F23H9/00—Revolving-grates; Rocking or shaking grates
    • F23H9/02—Revolving cylindrical grates

Definitions

  • the grate bars of a known type of grate roller consist of a relatively narrow, from the side, arcuate web with two side walls, a head and a foot wall and a fire-side outer web wall.
  • projecting tooth-like projections are arranged on each side wall at a regular distance from each other parallel to the direction of the axis of the grate roller, each projection of one side wall being positioned diagonally to the projection of the other side wall and the projections of a grate bar into the gaps between the projections of one grips laterally adjacent other grate bar, leaving a gap between adjacent grate bars of about 5 mm in width. As described, this gap is intended for the supply of air.
  • the roller grate 2 has a feed device 1 through which the waste (not shown) is pushed onto a roller grate 2 inclined in the transport direction.
  • the roller grate 2 is constructed from a plurality of rotatable grate rollers 3 arranged side by side in the transport direction, pockets 4 being formed between adjacent grate rollers.
  • the roller grate 2 is embedded in a sheet metal housing 5 divided for each grate roller. Air is supplied to these zones from the side in controllable quantities. Since all other parts of the waste incineration plant are not related to the invention, they are not described because they are known.
  • Each grate roller 3 is laterally supported by a hollow shaft 6 in the corresponding sheet metal housing 5 (FIG. 2).
  • the cylindrical support structure of the grate roller is located between the bearings.
  • a grate roller according to the invention is characterized in that it is equipped with grate bars according to the invention and the gap 25 between adjacent grate bars on the combustion chamber side at the edges 26 is approximately 2 millimeters, in particular 1 millimeter and less. It can be advantageous here if the individual rolls have different gap widths, depending on their position in the combustion zone. Here, the smallest gap width should be present in the roller, which is arranged in the main combustion zone, since there the slag is usually the most liquid, so that there is the greatest risk that the liquid slag can run into the interior.
  • the rolls with the larger gap width have manufacturing advantages because they can be manufactured with larger tolerances.
  • the side walls 19 and 20 lead in the upper third with an arc 28 to the edge 27, which creates a kind of pointed vault 29 between adjacent grate bars (FIG. 5). It is also advantageous if the base web 16 widens evenly upwards, the broadening possibly extending without an arch up to the edge 27. The latter features support the action of the slots 25.
  • a certain flow rate is achieved which prevents the liquid slag from clogging the grids or from penetrating into the roller.
  • This flow rate depends largely on the ratio of the gap width to the distance between the base webs 16.
  • a ratio of 1/25 to 1/50 [gap width / distance] is expedient.

Claims (12)

1. Rouleau de grille (3) pour une grille à rouleaux (2) d'une installation d'incinération des ordures ménagères ou similaire, avec un arbre creux (6) et une structure porteuse cylindrique avec des supports de barreaux de grille sur lesquels sont disposés des barreaux de grille (11) en forme d'arc de cercle avec des parois extérieures (17) formant le bandage des rouleaux du côté du foyer, tandis que chaque barreau de grille (11) est formé avec une section essentiellement en forme de T avec une barrette de base (16) et une barrette transversale (15), et tandis qu'à chaque fois entre les barrettes transversales (15) de deux barreaux de grille adjacents (11), sont formées des lames d'air (25) pour l'introduction de l'air primaire, avec une section en forme de buse telle que l'air introduit prenne une vitesse d'écoulement assez élevée qu'il empêche la pénétration de matières dans la fente d'air (25).
2. Rouleau de grille selon la revendication 1, caractérisé en ce que la barrette transversale (15) de chaque barreau de grille (11) présente des surfaces d'arêtes latérales planes (23, 24) qui, en partant de la paroi extérieure (17) du côté du foyer, sont inclinées en direction de la barrette de base (16) de façon telle que la fente d'air (25) vue en coupe en forme de buse se rétrécisse en forme de coin vers le foyer.
3. Rouleau de grille selon la revéndication 1, caractérisé en ce que la barrette transversale (15) de chaque barreau de grille (11) présente des surfaces d'arêtes latérales planes (23, 24) qui s'étendent à angle droit par rapport à la paroi extérieure (17) du côté du foyer et sont parallèles entre elles.
4. Rouleau de grille selon une des revendications 2 ou 3, caractérisé en ce que la fente d'air (25) présente du côté du foyer une largeur infé- . rieure ou égale à 1 millimètre.
5. Rouleau de grille selon une des revendications 1 à 3, caractérisé en ce que, dans la structure porteuse, des tôles directrices d'air (10) sont disposées obliquement par rapport à l'axe longitudinal du rouleau.
6. Rouleau de grille selon une des revendications 1 à 5, caractérisé en ce qu'un espace (29) d'admission d'air en forme de voute pointue, formé par les barreaux de grille (11), est disposé en avant des fentes (25) en forme de buse ou en forme de coin.
7. Rouleau de grille selon une des revendications 1 à 6, caractérisé en ce que le rapport de la largeur de la fente à l'écart des barrettes de base (16) est compris entre 1/25 et 1/50.
8. Rouleau de grille selon une des revendications 1 à 7, caractérisé en ce que vingt à vingt-cinq fentes (25) sont formées par mètre de longueur de rouleau.
9. Rouleau de grille selon une des revendications 1 à 8, caractérisé par un racloir (30) constitué par des brosses d'acier distinctes.
10. Rouleau de grille selon une des revendications 1 à 9, caractérisé en ce que la barrette de base (16) de chaque barreau de grille (11) présente des parois latérales (19, 20) qui se raccordent à la barrette transversale (15) par un arc (28) dans les tiers supérieur.
11. Rouleau de grille selon une des revendica- - tions 1 à 10, caractérisé en ce que la barrette de base (16) de chaque barreau de grille (11) s'élargit uniformément vers le haut.
12. Rouleau de grille selon une des revendications 1 à 11, caractérisé en ce que la largeur de la barrette transversale (15) de chaque barreau de grille (11) est de quarante à quarante huit millimètres et celle de la barrette de base (16) est d'environ dix-huit millimètres.
EP84114826A 1983-12-23 1984-12-06 Rouleau de grille pour grille à rouleaux par exemple d'une installation d'incinération des ordures ou similaire Expired - Lifetime EP0157920B2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3346747 1983-12-23
DE3346747 1983-12-23
DE3420020 1984-05-29
DE19843420020 DE3420020A1 (de) 1983-12-23 1984-05-29 Roststab sowie rostwalze fuer den walzenrost z.b. einer muellverbrennungsanlage oder dergleichen

Publications (4)

Publication Number Publication Date
EP0157920A2 EP0157920A2 (fr) 1985-10-16
EP0157920A3 EP0157920A3 (en) 1987-05-20
EP0157920B1 true EP0157920B1 (fr) 1989-07-26
EP0157920B2 EP0157920B2 (fr) 1995-05-31

Family

ID=25816737

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84114826A Expired - Lifetime EP0157920B2 (fr) 1983-12-23 1984-12-06 Rouleau de grille pour grille à rouleaux par exemple d'une installation d'incinération des ordures ou similaire

Country Status (4)

Country Link
US (1) US4610209A (fr)
EP (1) EP0157920B2 (fr)
CS (1) CS273159B2 (fr)
DE (2) DE3420020A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK0396908T3 (da) * 1989-05-10 1994-09-19 Babcock Anlagen Gmbh Riststav og ristvalse
FR2647532B1 (fr) * 1989-05-25 1991-09-06 Picard Fours Rouleau de grille de foyer, notamment pour incineration de dechets, avec un garnissage tubulaire forme d'anneaux de barreaux separes par des intervalles de soufflage de largeur maintenue
US5042401A (en) * 1990-06-04 1991-08-27 Westinghouse Electric Corp. Water cooled rolling grate incinerator
DE4300636C1 (de) * 1993-01-13 1994-07-14 Rbu Rolf Becker Gmbh Ingieneur Walzenrost zum Betrieb eines Verbrennungskessels
DE4316343A1 (de) * 1993-05-15 1994-11-17 Babcock Energie Umwelt Walzenrost für Verbrennungsanlagen
DE4322908A1 (de) * 1993-07-09 1995-01-26 Lentjes Kraftwerkstechnik Walzenrost
DE4322909A1 (de) * 1993-07-09 1995-01-12 Lentjes Kraftwerkstechnik Vorrichtung zur Aufgabe von Brennstoff auf einen Walzenrost
BR7900232U (pt) * 1999-02-03 2000-09-05 Vale Do Rio Doce Co Aperfeiçoamento em barra de grelha para fornos de pelotização e sinterização
AT410128B (de) * 2000-11-08 2003-02-25 Ferdinand Dipl Ing Tischler Rost für feste brennstoffe
DE102004011834A1 (de) * 2004-03-09 2005-10-06 Fisia Babcock Environment Gmbh Walzenrost
DE102007020515B4 (de) 2007-04-29 2013-08-22 Wvt Breiding Gmbh Axial auf einen Walzenrost aufschiebbarer Roststab, Roststab-Satz und Walzenrost
CZ2013266A3 (cs) * 2013-04-05 2014-12-17 Josa S.R.O. Rošt pro spalovací zařízení zejména pro spalování pelet na bázi biomasy
CN105465801B (zh) * 2016-01-05 2018-05-08 任丘市创新采暖设备有限公司 双向分料自动除渣旋转炉排
RU185323U1 (ru) * 2018-07-01 2018-11-30 Сергей Петрович Семенихин Колосник

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD19558A (fr) *
AT62478B (de) * 1911-03-14 1913-12-10 Augustus Francis Davis Roststab.
US1961098A (en) * 1929-03-06 1934-05-29 Loraine L Denker Mechanical stoker
US2501763A (en) * 1945-03-26 1950-03-28 Charles T Denker Solid fuel furnace of the rotary grate progressive feed type
US3078839A (en) * 1961-02-17 1963-02-26 Earland R Mitchell Dump grate
DE1164014B (de) * 1962-05-25 1964-02-27 Ver Kesselwerke Ag Rostwalze fuer Walzenrost zur Muellverbrennung
DE1526112A1 (de) * 1965-10-19 1970-01-08 Ver Kesselwerke Ag Walzenrost fuer Muellverbrennung sehr grosser Leistung

Also Published As

Publication number Publication date
EP0157920B2 (fr) 1995-05-31
DE3479150D1 (en) 1989-08-31
DE3420020C2 (fr) 1987-10-29
DE3420020A1 (de) 1985-07-04
CS273159B2 (en) 1991-03-12
EP0157920A2 (fr) 1985-10-16
CS1000684A2 (en) 1990-07-12
US4610209A (en) 1986-09-09
EP0157920A3 (en) 1987-05-20

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