EP1612483B1 - Elément de grille, grille de combustion associée et installation d'incinération de matière résiduelle - Google Patents

Elément de grille, grille de combustion associée et installation d'incinération de matière résiduelle Download PDF

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Publication number
EP1612483B1
EP1612483B1 EP05013884A EP05013884A EP1612483B1 EP 1612483 B1 EP1612483 B1 EP 1612483B1 EP 05013884 A EP05013884 A EP 05013884A EP 05013884 A EP05013884 A EP 05013884A EP 1612483 B1 EP1612483 B1 EP 1612483B1
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EP
European Patent Office
Prior art keywords
grate
grate panel
flow channel
longitudinal side
adjacent
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.)
Active
Application number
EP05013884A
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German (de)
English (en)
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EP1612483A2 (fr
EP1612483A3 (fr
Inventor
Anton Esser
Norbert Küppers
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.)
Doosan Lentjes GmbH
Original Assignee
AE&E Lentjes GmbH
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Publication date
Application filed by AE&E Lentjes GmbH filed Critical AE&E Lentjes GmbH
Priority to PL05013884T priority Critical patent/PL1612483T3/pl
Publication of EP1612483A2 publication Critical patent/EP1612483A2/fr
Publication of EP1612483A3 publication Critical patent/EP1612483A3/fr
Application granted granted Critical
Publication of EP1612483B1 publication Critical patent/EP1612483B1/fr
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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
    • F23H3/04—Grates with hollow bars externally cooled, e.g. with water, steam or air
    • 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

Definitions

  • the invention relates to a grate plate for a combustion grate, a grate formed from grate plates and a waste incineration plant with such a combustion grate.
  • the most important component of a waste incineration plant is the combustion grate, which is arranged horizontally or inclined and on which the firing material, for example refuse, is conveyed from a first end to a second end, usually Ausbrandrost.
  • the required combustion air is forced through the combustion grate.
  • corresponding openings are provided in the grate.
  • combustion grates there are several types of combustion grates, including but not limited to the so-called booster combustion grate.
  • a grate has moving parts (grate plates) which are suitable for carrying out scrubbing, whereby the kiln (the residue) is conveyed on the combustion grate.
  • the individual grate plates staggered in relation to each other in the region of their side facing the combustion chamber, lie on top of one another. If, for example, every second grate plate is movably arranged, it is achieved by the movement of this grate plate that the residue, which rests on the grate plate following in the transport direction, is transported on to the next grate plate.
  • RDF refuse derived fuel
  • the individual types of residue differ with regard to their calorific value. However, this also applies within the individual types of residues.
  • household waste may have a calorific value between 5 and 20 MJ / kg. Depending on this calorific value, the thermal and mechanical stress of the combustion grate or its grate plates changes.
  • the grate plates be cooled with a liquid, especially water.
  • a liquid especially water.
  • the procedural effort in a water cooling is clear higher than with air cooling.
  • the more intensive water cooling leads to an undesirably intensive cooling of the grate plates.
  • the object of the invention is to show a possibility in which by means of air cooling also combustible material (residues) with higher calorific values than hitherto usual, in particular with heating values> 10 MJ / kg, can be burned.
  • Each grate plate is exposed to a particularly intensive heat load, in particular to the hearth space, that is to say in particular on its upper side and its front end face.
  • Primary air is against the bottom of the grate plates out, so it cools from below, and is pressed through openings in the grate plates or between the grate plates, in the resting on the grate plates Brenngut Anlagen.
  • the heat-loaded part of each grate plate is on the underside of a certain cooling volume to dissipate the heat generated. However, especially in the edge region, the cooling is insufficient.
  • Such areas, such as the combustion chamber facing end face (longitudinal side) of a grate plate is characterized particularly corrosion and erosion.
  • the invention begins; in that at least one flow channel is formed in the area below the upper side and adjacent to the front-side longitudinal side of the grate plate, along which air is guided selectively from below towards the upper side or the adjacent front longitudinal side.
  • the area of the top of the grate plate adjacent to the flow channel is made thinner than the area behind it, so that the cooling becomes more intense.
  • this at least one flow channel is designed such that it has an air outlet opening on the portion of the corresponding end face (end face) adjacent to the underside, so that the air flow is then selectively directed to the surface of the grate plate following in the direction of transport of the material to be burned, and this surface likewise cools.
  • the invention in its most general embodiment relates to a grate plate for a combustion grate according to claim 1.
  • the grate plate is formed below the top with a plurality of recesses extending from an area adjacent to the first longitudinal side to an area adjacent to the second longitudinal side and open to the bottom.
  • the top (upper face of the grate plate) can form relatively thin, for example 10-15 mm.
  • the flow channel or the flow channels extend according to an embodiment perpendicular to the longitudinal side of the grate plate.
  • the air flow along the flow channels extends in the direction of the front end surface of the grate plate.
  • this "front" section of the grate plates is particularly at risk.
  • the length of the flow channel can be normally limited to a length corresponding to 10-50% of the width of the grate plate, with a length between 10 and 30% usually sufficient. This is especially the section that is not swept over by a booster combustion grate.
  • a grate plate on the circumference no exact cuboid shape.
  • the front end face (second longitudinal side) therefore does not run perpendicular to the top of the grate plate. Rather, the second longitudinal side can extend at an angle ⁇ ⁇ 90 ° to the upper side and optionally additionally have at least one further bend.
  • the flow channel is not rectilinear, but follows the shape of the grate plate in this area, that is, for example - describes - on average - a semicircle or has several bends. In this way, at the same time results in an extension of the flow channel.
  • An intensification of the cooling is achieved when the flow channel is relatively close to the respective surface areas of the grate plate.
  • an upper (outer) boundary wall of the flow channel is formed by an (inner) surface of the upper side and an (inner) surface of the second longitudinal side.
  • a lower (inner) boundary wall for the flow channel can be formed by a rib which extends between walls or webs which form, for example, lateral boundaries of said recesses.
  • Is the underside of the grate plate also called rust level
  • rust level designed so that the top of the grate plate when resting the grate plate on a horizontal surface from the first longitudinal side to the second longitudinal side (ie from back to front) rising (slope, for example: 3-10 ° )
  • slope for example: 3-10 °
  • the corresponding grate plate with this paragraph is on the following in the direction of transport of the fuel grate plate (rust level).
  • its front longitudinal side terminates preferably at a distance from the upper side of the following grate plate, and correspondingly, the outlet opening of the flow channel is also above the contact surface of the following grate plate. In this way, the targeted flow of the surface of the adjacent grate plate is additionally favored. This too is illustrated and explained in the following description of the figures.
  • the additional cooling according to the invention makes it possible to make the sections of the grate plate adjacent to the flow channel thinner than the remaining sections of the grate plate. This not only saves material, but also increases the cooling effect.
  • This "thinner” section can refer not only to the front longitudinal side of the grate plate, but also to adjacent sections of the top of the grate plate.
  • Grate plates of the type mentioned have a width of 40-60 cm and a length of several meters.
  • grate bars may be castings, wherein the flow channel can be formed in situ. Each section is thus one piece.
  • the sections (grate bars) can also be composed of sub-sections, especially if they are welded from sheets.
  • a grate bar for example, a width (in the longitudinal direction of the entire grate plate) of 5-25 cm, but also beyond.
  • connection of adjacent grate bars by means of known connection technology, for example by screwing or in that a plurality of grate bars are connected to each other via connecting rods. Groups of grate bars formed in this way can in turn be connected to each other analogously.
  • an embodiment provides for the grate plates to be formed such that at least one recess is formed by two adjoining grate bars (sections), that is to say each grate bar forms a part, for example one half of the corresponding recess.
  • the invention further relates to a combustion grate, in particular a Schubverbrennungsrost, with a plurality of grate plates of the aforementioned type.
  • shear combustion grate includes all types of shear combustion grates, regardless of whether they are horizontal or inclined or the kiln is conveyed in one direction or the other.
  • shear combustion grate is also not limiting insofar as she decorations are detected in which, for example, every other grate plate is movably arranged, but also such grates in which more than a stationary grate plate are placed between grate plates that perform Schürhübe.
  • the invention comprises a waste incineration plant, for example a waste incineration plant, with a combustion grate of the aforementioned type.
  • the basic structure of a grate plate is based on the lower grate plate in FIG. 1 explains:
  • the grate plate has an upper side 10, a lower side 12, a rear longitudinal side 14, a front longitudinal side 16 and corresponding to two broad sides, which are not visible due to the sectional view.
  • the upper end face 10o of the top 10 is flat.
  • the front, second longitudinal side 16 is angled at an angle ⁇ (approximately 45 °) relative to the surface 10o and then has an angling 16w.
  • the grate plate Adjacent to the first (rear) longitudinal side 14, the grate plate on the underside a in the longitudinal direction (in the drawing plane) extending recess 18 in which a round rod 20 is located, on which the grate plate is supported. With the help of this round rod 20 is in FIG. 1 above shown grate plate in the direction of arrow P movable.
  • each grate plate is formed with a plurality of juxtaposed recesses 22.
  • Each recess 22 is bounded laterally (parallel to the broad sides) of walls, in which case only one wall 24 can be seen.
  • the recess 22 is bounded by a corresponding portion 14a of the first longitudinal side and at the front (in a combustion chamber 26 facing) portion of the front (second longitudinal side) 16. From the wall 24 protrude a plurality of cooling fins 28 in the recess 22nd
  • a wall 30 which has a substantially arcuate shape in the sectional view and at the front end, the second longitudinal side 16 adjacent, merges into a thickened portion 30v, which projects beyond a lower end edge 16u of the front, second longitudinal side 16 and forms a bearing surface 30u for the grate plates.
  • This wall 30 forms a lower (inner) boundary wall of a flow channel 32 which extends from the lower end 16u of the second longitudinal side 16 parallel to the wall 30 (thus forming the inner surface of the longitudinal side 16 the other boundary for the flow channel 32) and in its further course is delimited by a lower surface 10u of the upper surface 10 before opening towards the underside 12 of the grate plate.
  • the wall 30 ends at the lower end of the space 22; but he could also end earlier.
  • a funnel-like inflow opening for cooling air is provided, which is provided below the grate plate and the entire recess 22 flows against, including the area below the wall 30th
  • upper grate plate is the part of the cooling air, which is guided through the flow channel 32, symbolized by the arrow K.
  • the cooling air thus occurs at the funnel-shaped end 32k the flow channel 32 and is then first along the inner surface 10u of the top 10 and then along the inner surface 16i of the longitudinal side 16 before the cooling air exits in the region of the opening 32o and impinges on the top 10 of the adjacent grate plate and these flows.
  • the wall thickness of the grate plate there thinner than in the rear part can be formed, as the figure shows.
  • the thickness of the upper side 10 in the rear part 10r is 12 mm, in the front part (adjacent to the flow channel 32) only 6 or 8 mm. This applies analogously to the wall thickness of the second longitudinal side 16.
  • the grate plate is formed by a plurality of juxtaposed sections that connect directly to each other and are interconnected. These cuts are also called grate bars.
  • FIG. 2 shows that each grate bar T1, T2 approximately centrally forms a wall 24, so that a recess 22 is formed in each case by two adjacent grate bars T1, T2 together. This also applies to the Flow channel 32, which here has an approximately oval cross-section.
  • holes 36 serve to receive rods for connecting adjacent sections T1, T2.
  • each grate bar T1, T2 is in one piece, that is, for example, the ribs 28 and the wall 30 are materially connected to the wall 24th

Claims (15)

  1. Barreau de grille pour une grille d'incinération, comportant les caractéristiques suivantes :
    a) le barreau de grille comporte un côté supérieur (10), un côté inférieur (12), deux côtés longitudinaux (14, 16) et deux côtés en largeur,
    b) le barreau de grille, à proximité d'un premier côté longitudinal (14), comporte au moins un dispositif d'assemblage à un élément de support (20),
    c) en dessous du côté supérieur (10) et à côté du deuxième côté longitudinal (16) est réalisé au moins un canal d'écoulement (32), le long duquel l'air peut être guidé depuis une zone en dessous du barreau de grille jusqu'à une ouverture (32o) au niveau de la partie (16u) du deuxième côté longitudinal (16), adjacente au côté inférieur (12),
    et caractérisé en ce que le côté supérieur (10) du barreau de grille, dans sa partie (10v) adjacente au canal d'écoulement (32), est plus mince que dans la partie (10r) située derrière le canal d'écoulement(32).
  2. Barreau de grille selon la revendication 1, qui est réalisé, en dessous du côté supérieur (10), avec une pluralité d'évidements (22), qui s'étendent chacun depuis une zone (14a) adjacente au premier côté longitudinal (14) jusque dans une zone adjacente au deuxième côté longitudinal (16) et qui sont ouverts vers le côté inférieur (12).
  3. Barreau de grille selon la revendication 1, dont le canal d'écoulement (32) s'étend perpendiculairement aux côtés longitudinaux (14, 16) du barreau de grille.
  4. Barreau de grille selon la revendication 1, dont le canal d'écoulement (32) a une longueur qui correspond à 10 à 50 % de la longueur des côtés en largeur.
  5. Barreau de grille selon la revendication 1, dont le deuxième côté longitudinal (16) s'étend en délimitant avec le côté supérieur (10) un angle α inférieur à 90°.
  6. Barreau de grille selon la revendication 1, dont le deuxième côté longitudinal (16) comporte au moins une pliure (16w).
  7. Barreau de grille selon la revendication 1, dans lequel une paroi supérieure (extérieure) du canal d'écoulement (32) est formée par le côté supérieur (10) et le deuxième côté longitudinal (16).
  8. Barreau de grille selon la revendication 1, dans lequel une paroi (30) inférieure (intérieure) du canal d'écoulement (32) est formée par une nervure, qui s'étend entre les parois (24), qui forment des délimitations latérales de l'évidement (22) correspondant.
  9. Barreau de grille selon la revendication 1, dont le côté inférieur (12) est conçu de telle sorte que, lorsque le barreau de grille est posé sur une surface horizontale, le côté supérieur (10) du barreau de grille est orienté en pente ascendante depuis le premier côté longitudinal (14) vers le deuxième côté longitudinal (16).
  10. Barreau de grille selon la revendication 1, dont le côté inférieur (12), adjacent au deuxième côté longitudinal (16), est réalisé avec une saillie (30v) dirigée vers le bas.
  11. Barreau de grille selon la revendication 1, dans lequel le deuxième côté longitudinal (16), dans sa partie adjacente au canal d'écoulement (32), est plus mince que le côté supérieur (10) dans la partie (10r) située derrière le canal d'écoulement (32).
  12. Barreau de grille selon la revendication 1, formé par plusieurs morceaux (T1, T2) adjacents les uns aux autres vers les côtés longitudinaux (14, 16) et assemblés les uns aux autres.
  13. Barreau de grille selon la revendication 12, dans lequel au moins un évidement (22) est formé par deux morceaux (T1, T2) adjacents l'un à l'autre.
  14. Grille, en particulier grille d'incinération télescopique selon l'une quelconque des revendications 1 à 13.
  15. Incinérateur de résidus avec une grille d'incinération selon la revendication 14.
EP05013884A 2004-07-03 2005-06-28 Elément de grille, grille de combustion associée et installation d'incinération de matière résiduelle Active EP1612483B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05013884T PL1612483T3 (pl) 2004-07-03 2005-06-28 Płyta rusztowa, przynależny ruszt paleniskowy i odpowiednie instalacje do spalania materiałów

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004032291A DE102004032291B4 (de) 2004-07-03 2004-07-03 Rostplatte

Publications (3)

Publication Number Publication Date
EP1612483A2 EP1612483A2 (fr) 2006-01-04
EP1612483A3 EP1612483A3 (fr) 2006-02-08
EP1612483B1 true EP1612483B1 (fr) 2008-07-23

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EP05013884A Active EP1612483B1 (fr) 2004-07-03 2005-06-28 Elément de grille, grille de combustion associée et installation d'incinération de matière résiduelle

Country Status (9)

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US (1) US20060000396A1 (fr)
EP (1) EP1612483B1 (fr)
JP (1) JP2006017454A (fr)
CN (1) CN1715752B (fr)
AT (1) ATE402375T1 (fr)
DE (2) DE102004032291B4 (fr)
DK (1) DK1612483T3 (fr)
ES (1) ES2308341T3 (fr)
PL (1) PL1612483T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009042722A1 (de) 2009-09-23 2011-03-24 Thyssenkrupp Xervon Energy Gmbh Roststab

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE538347T1 (de) * 2008-11-05 2012-01-15 Hitachi Zosen Inova Ag Luftgekühlter rostblock
GB2483479A (en) 2010-09-09 2012-03-14 Tiska Gmbh Furnace grate bars
DE102014004660A1 (de) * 2014-02-10 2015-08-13 Joachim Kümmel Verfahren zur Verbrennung von Abfall und Biomassen auf einem luftgekühlten Rost sowie Vorrichtung zur Durchführung des Verfahrens
US10309648B2 (en) 2016-11-22 2019-06-04 General Electric Company System and method for active cooling of a grate bar for an incinerator of a waste-to-energy plant

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US2745364A (en) * 1948-10-01 1956-05-15 Martin Johannes Josef Combustion air supply through grates and grate construction
CH669447A5 (fr) * 1982-05-13 1989-03-15 Von Roll Ag
IT207959Z2 (it) * 1986-09-08 1988-03-14 Forni Ed Impianti Ind Ing De B Elemento di griglia a gradini per forni di incenerimento dei rifiuti con circolazione d'aria e tenuta migliorate.
ATE60832T1 (de) * 1987-04-25 1991-02-15 Mrklas Louis Rostfeuerung fuer die muellverbrennung.
DE8706013U1 (fr) * 1987-04-25 1988-03-24 Mrklas, Louis, Ing. (Grad.), 4352 Herten, De
ATE95907T1 (de) * 1989-04-03 1993-10-15 W & E Umwelttechnik Ag Verbrennungsanlage zum verbrennen von brennmaterial insbesondere von muell.
DE4026587C1 (fr) * 1990-08-23 1991-10-17 Evt Energie- Und Verfahrenstechnik Gmbh, 7000 Stuttgart, De
DE4105330C1 (fr) * 1991-02-18 1992-08-06 Noell - K + K Abfalltechnik Gmbh, 4040 Neuss, De
US5542378A (en) * 1994-06-02 1996-08-06 Saint-Gobain/Norton Industrial Ceramics Corp. Waterwall tube block design
DE19613507C1 (de) * 1996-04-04 1997-08-21 Evt Energie & Verfahrenstech Rostplatte
DE29809059U1 (de) * 1998-05-19 1999-02-04 Stadick Robert Rost für Brennstoffkessel
DE20111804U1 (de) * 2001-07-16 2001-09-27 Wvt Breiding Gmbh Rost und Roststäbe
DE10163670A1 (de) * 2001-12-21 2003-07-03 Bbp Environment Gmbh Roststab für eine Schubrostfeuerung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009042722A1 (de) 2009-09-23 2011-03-24 Thyssenkrupp Xervon Energy Gmbh Roststab
EP2306086A2 (fr) 2009-09-23 2011-04-06 ThyssenKrupp Xervon Energy GmbH Barreau de grille

Also Published As

Publication number Publication date
DK1612483T3 (da) 2008-10-20
ATE402375T1 (de) 2008-08-15
DE102004032291A1 (de) 2006-02-09
JP2006017454A (ja) 2006-01-19
EP1612483A2 (fr) 2006-01-04
EP1612483A3 (fr) 2006-02-08
US20060000396A1 (en) 2006-01-05
DE502005004779D1 (de) 2008-09-04
PL1612483T3 (pl) 2008-11-28
ES2308341T3 (es) 2008-12-01
CN1715752B (zh) 2010-12-29
DE102004032291B4 (de) 2006-07-13
CN1715752A (zh) 2006-01-04

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