EP1975507A1 - Grille d'avance pour foyers de combustion - Google Patents

Grille d'avance pour foyers de combustion Download PDF

Info

Publication number
EP1975507A1
EP1975507A1 EP07006496A EP07006496A EP1975507A1 EP 1975507 A1 EP1975507 A1 EP 1975507A1 EP 07006496 A EP07006496 A EP 07006496A EP 07006496 A EP07006496 A EP 07006496A EP 1975507 A1 EP1975507 A1 EP 1975507A1
Authority
EP
European Patent Office
Prior art keywords
grate
feed
bars
grate bars
cooling fluid
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.)
Withdrawn
Application number
EP07006496A
Other languages
German (de)
English (en)
Inventor
Holger Kleen
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.)
Mitsubishi Hitachi Power Systems Europe GmbH
Original Assignee
ThyssenKrupp Xervon Energy 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 ThyssenKrupp Xervon Energy GmbH filed Critical ThyssenKrupp Xervon Energy GmbH
Priority to EP07006496A priority Critical patent/EP1975507A1/fr
Priority to RU2008110484/06A priority patent/RU2377469C1/ru
Publication of EP1975507A1 publication Critical patent/EP1975507A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • 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 present invention relates to a feed grate for combustion plants, which is cooled with a liquid cooling medium and for generating a feed movement back and forth movable grate bars, wherein at least one movable grate bardefluidzuschreib protest is connected.
  • Such feed grates usually comprise a plurality of rows of grates consisting of a plurality of parallel grate bars arranged next to one another, which are arranged one behind the other and one above the other in a stepwise or roof tile-like manner.
  • a stationary and a forward and backward movable row are usually provided in alternation.
  • the forward and backward movement of the movable grate rows causes the material to be burned to be advanced along the feed grate during the combustion process.
  • the fuel bed is stoked, which increases the efficiency of the combustion process.
  • the grate bars are cooled with a cooling medium.
  • liquid or gaseous fluids may be used, for example water or air.
  • air cooling air is passed between the grate bars, which serves both to cool the grate bars and to provide the primary air required for combustion.
  • a problem with the air cooling can arise when an optimal in relation to the combustion primary air volume flow is not sufficient for cooling the grate bars. In this case, the air flow must be increased to prevent wear of the grate bars, but at the same time adversely affects the combustion process. Such a mutual dependence of cooling air and primary air supply is correspondingly unfavorable. In the case of water cooling, however, the problem described above does not exist.
  • the cooling of the grate bars takes place essentially by the cooling water conducted through the grate bars, so that the primary air passed between the grate bars exerts no cooling function.
  • the cooling water and primary air supply are thus independent of each other and can be optimally adjusted according to their respective tasks, without negatively affecting the combustion process.
  • adefluidzumol For cooling a movable grate bar with the aid of a liquid cooling medium, adefluidzumoltechnisch is connected to this normally.
  • thisdefluidzumoltechnisch can be passed according to a liquid cooling fluid to the grate bar, which then flows, for example, provided by the grate bar cooling channels, wherein a heat exchange between the grate bar and the cooling medium takes place.
  • a plurality of movable grate bars of a movable row of grates or even a plurality of movable grate rows can be fluidly interconnected such that their cooling takes place with the aid of a simpleisserfluidzuschreibtechnisch.
  • It can also be provided severaldefluidzuschreibloomen, each supplying one or more grate bars or grate rows with the liquid cooling medium.
  • the correspondingdefluidzu113 To compensate for the forward and backward movement of the movable grate bars, it is known that the correspondingdefluidzu113 apparently has an elastic hose section, which can understand the movement of the grate bars.
  • This can be, for example, a plastic hose protected by a metal sheath, a less flexible metal hose or the like.
  • a tube section In addition to the flexibility to compensate for the movement of the grate bars, such a tube section must also have high heat resistance and dirt resistance, since it is used in a temperature and dirt-loaded area, which seems to preclude each other.
  • the cooling medium temperature of flexible metal hoses is limited to approx. ⁇ 100 ° C. When using piping, the temperature and pressure can be increased significantly, which improves the heat utilization of the cooling medium.
  • EP-A 0 915 294 a water-cooled firing grate for incinerators, wherein the movement of the movable grate bars is accommodated by at least one flexible connection, which is arranged outside the underwinding area of the incinerator and thus outside the temperature and dirt loaded area. In this way, an early failure of the flexible connection can be avoided.
  • a disadvantage is the increased use of material, which is associated with the lead out ofméfluidzuschreibtechnisch from the particularly polluted area.
  • This object is achieved according to the present invention by a grate for combustion plants according to Claim. 1 Claims 2 to 6 relate to individual embodiments of the feed grate according to the invention.
  • the present invention provides a feed grate for combustion plants, the cooled with liquid cooling fluid and for generating a feed movement back and forth movable grate bars, wherein at least one movable grate bardefluidzucream protest is connected.
  • the cooling fluid supply line has at least two articulated conduit elements, which are pivotably arranged to compensate for the forward and backward movement of the grate bar.
  • the pivotally arranged line elements can be made in comparison to a flexible hose section of a material that is better suited for use in the temperature- and dirt-loaded area below the underwinding area of the furnace, since the use of a flexible material is not required for these line elements.
  • pivotally arranged line elements is further advantageous in that the associated with a leakage of cooling fluid is only slightly, so that even with a damaged component always sufficient cooling of the feed grate can be guaranteed.
  • a plurality of movable grate bars or whole movable grate bar rows can be supplied with a liquid cooling medium via a single cooling fluid supply line by fluidly interconnecting the grate bars or rows of grates, whether parallel or in series.
  • severaldefluidzufilm Kochen can be provided on different movable grate bars or movable grate rows to cool them accordingly. Each of thesedefluidzuschreibtechnischen is then provided to compensate for the movement with at least two articulated interconnected line elements which are pivotally arranged for compensation.
  • the stationary grate bars or grate bar rows also have liquid coolant supply ducts. Cooling medium to be supplied. But it should not be discussed in more detail, because according to the present invention, the compensation of the movement of the movable grate bars or grate bar rows is in the foreground.
  • the pivotally arranged line elements are connected to one another via at least one fluid-tight joint and / or with the remainingdefluidzu meltschreib.
  • This joint is also made of a non-flexible material, so that in this regard, the advantage over the use of flexible hose sections is given, namely that the joint is much temperature and dirt insensitive.
  • the hinge has two angular tube pieces, which are connected at one end rigidly connected to the line elements and at the other end rotatably connected to each other.
  • a robust construction is given, which is relatively wear-resistant via a corresponding pivot bearing of the two angular pipe sections.
  • the grate bars are step-like and in each case fixed in place and arranged movable forward and backward, in order to ensure proper transport of the to ensure burning material through the firing system.
  • the grate bars preferably have meander-shaped cooling fluid channels, which are advantageously pipelines cast into the grate bars.
  • the term "grate bar” according to the invention includes grate blocks or rows of grates which have no rod shape.
  • FIG. 1 is a perspective schematic diagram showing the operation of the feed grate invention. Shown are three grate bars 10, 12 and 14, which are arranged one behind the other and continuously - or tile-like - one above the other. In the grate bars 10 and 14 are fixed grate bars, whereas the grate bar 12 can be moved back and forth, with reference to the Figures 2 and 3 is described in more detail. Each of the grate bars 10, 12 and 14 has recesses 16. In the FIG. 1 shown left recesses 16 of the grate bars 10, 12 and 14 are respectively engaged with holding ears of a support structure of the feed grate, wherein in FIG. 1 only one holding tube 18 of the support structure for the grate bar 10 is shown. In this way, the grate blocks 10, 12 and 14 can be laid in a simple manner roof tiles on the holding device.
  • cooling fluid channels are provided through which a liquid cooling fluid can be passed to cool the grate bars.
  • Thedefluidzu 1900 threaten 22 of the movable grate bar 12 comprises, in contrast to thedefluidzu1700 Gustaven 20 and 24 of the stationary tube bars 10 and 14, two intermediate hinged interconnected Line elements 26 and 28, which serve to compensate for the movement of the movable grate bar 12, which is explained in more detail below.
  • the power elements 26 and 28 are connected to each other via a hinge 30.
  • the line elements 26 and 28 are connected to the rigid pipes 32 and 34, wherein this connection also takes place via the joint 30 corresponding joints 36 and 38.
  • FIG. 2 show the FIG. 1 illustrated arrangement in a second position in which the movable grate bar 12 of the in FIG. 1 shown rear end position in the direction of arrow 40 has been moved by the distance d 1 by means of a feed drive, not shown.
  • the movement of the movable grate bar 12 is compensated by the pivoting of the line elements 26 and 28 and the joints 30, 36 and 38 by the distance d 1 .
  • FIG. 3 shows the in the Figures 1 and 2 illustrated arrangement of a front end position in which the movable grate bar 12 is moved forward by the distance d 2 , this forward movement is in turn offset by pivoting the line elements 26 and 28 by the distance d 2 . From the in FIG. 3 shown position, the grate bar 12 back into the in FIG. 1 shown position, this movement is compensated by pivoting back the pivotable line elements 26 and 28.
  • grate bars 10, 12 and 14 are not limiting. Instead of grate bars, for example, so-called grate blocks can be used which are substantially wider than the grate bars shown. Also, the design of the cooling channels is variable.
  • FIG. 4 is a detail view of the in the FIGS. 1 to 3 showndefluidzu slaughtertechnisch 22 with the intermediate pivotable conduit elements 26 and 28.
  • the conduit elements are connected to each other and to the rigid pipes via the joints 30, 36 and 38, respectively.
  • Each joint 30, 36 and 38 in this case has two angular pipe sections 42 and 44, which are rigidly connected, for example screwed to one side with the line elements 26 and 28 and with the rigid pipes 32 and 34.
  • the angle-shaped pipe sections 42 and 44 are rotatably connected to each other, which takes place via a corresponding pivot bearing 46 and is no longer described.
  • the pivoting of the line elements 26 and 28 takes place as indicated by the arrow 48.
  • the use of the pivotally mounted line elements 26 and 28 has the advantage over the use of hose sections that 26 and 28 materials can be used for the line elements, which can better withstand the temperature and pollution loads of the feed grate, as that for the line elements 26 and 28 used material must have no elastic properties.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
  • Furnace Details (AREA)
EP07006496A 2007-03-29 2007-03-29 Grille d'avance pour foyers de combustion Withdrawn EP1975507A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP07006496A EP1975507A1 (fr) 2007-03-29 2007-03-29 Grille d'avance pour foyers de combustion
RU2008110484/06A RU2377469C1 (ru) 2007-03-29 2008-03-20 Переталкивающая колосниковая решетка для топок

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07006496A EP1975507A1 (fr) 2007-03-29 2007-03-29 Grille d'avance pour foyers de combustion

Publications (1)

Publication Number Publication Date
EP1975507A1 true EP1975507A1 (fr) 2008-10-01

Family

ID=38283210

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07006496A Withdrawn EP1975507A1 (fr) 2007-03-29 2007-03-29 Grille d'avance pour foyers de combustion

Country Status (2)

Country Link
EP (1) EP1975507A1 (fr)
RU (1) RU2377469C1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008072214A2 (fr) * 2006-12-14 2008-06-19 Osman Yesilyurt Chaudière comportant une unité de combustion de déchets solides constituée de paliers coulissants avec de conduits d'eau de système tubulaire
EP2511609A2 (fr) 2011-04-15 2012-10-17 WVT Breiding GmbH Barreau de grille modulaire, élément de recouvrement, élément de bande combustible et élément de base associé ainsi que la grille d'avance d'une installation de combustion
DE202011005341U1 (de) 2011-04-15 2014-05-20 Wvt Breiding Gmbh Modularer Roststab, Auflageelement, Brennbahnelement und Fußelement dafür sowie Vorschubrost einer Verbrennungsanlage
CN110214249A (zh) * 2017-12-28 2019-09-06 三菱重工环境·化学工程株式会社 机械炉排炉用密封装置及机械炉排炉

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011050367B4 (de) * 2011-05-13 2012-12-20 Rekers Verwaltungs-GmbH & Co. KG Schüttelrost für einen Füllwagen einer Steinformmaschine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE561099C (de) * 1929-08-11 1932-10-10 Willi Thieme Feuerungsrost aus laengsliegenden Roststaeben, die zur Foerderung des Brennstoffes in Gruppen herausgezogen und in Richtung auf die Feuerbruecke zurueckgeschoben werden
WO1996029544A1 (fr) * 1995-03-23 1996-09-26 Theodor Koch Grille de combustion et procede d'optimisation du fonctionnement d'une grille de combustion
EP0915294A1 (fr) * 1997-11-07 1999-05-12 Noell-KRC Energie- und Umwelttechnik GmbH Grille de combustion refroidie à l'eau
EP0989364A1 (fr) * 1998-09-24 2000-03-29 Von Roll Umwelttechnik AG Elément de grille et procédé de refroidissement de ce dernier
WO2006109199A1 (fr) * 2005-04-13 2006-10-19 Babcock & Wilcox Vølund Aps Systeme de refroidissement pour grille de combustion dans une usine d’incineration

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE561099C (de) * 1929-08-11 1932-10-10 Willi Thieme Feuerungsrost aus laengsliegenden Roststaeben, die zur Foerderung des Brennstoffes in Gruppen herausgezogen und in Richtung auf die Feuerbruecke zurueckgeschoben werden
WO1996029544A1 (fr) * 1995-03-23 1996-09-26 Theodor Koch Grille de combustion et procede d'optimisation du fonctionnement d'une grille de combustion
EP0915294A1 (fr) * 1997-11-07 1999-05-12 Noell-KRC Energie- und Umwelttechnik GmbH Grille de combustion refroidie à l'eau
EP0989364A1 (fr) * 1998-09-24 2000-03-29 Von Roll Umwelttechnik AG Elément de grille et procédé de refroidissement de ce dernier
WO2006109199A1 (fr) * 2005-04-13 2006-10-19 Babcock & Wilcox Vølund Aps Systeme de refroidissement pour grille de combustion dans une usine d’incineration

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008072214A2 (fr) * 2006-12-14 2008-06-19 Osman Yesilyurt Chaudière comportant une unité de combustion de déchets solides constituée de paliers coulissants avec de conduits d'eau de système tubulaire
WO2008072214A3 (fr) * 2006-12-14 2010-08-26 Osman Yesilyurt Chaudière comportant une unité de combustion de déchets solides constituée de paliers coulissants avec de conduits d'eau de système tubulaire
EP2511609A2 (fr) 2011-04-15 2012-10-17 WVT Breiding GmbH Barreau de grille modulaire, élément de recouvrement, élément de bande combustible et élément de base associé ainsi que la grille d'avance d'une installation de combustion
DE102011100369A1 (de) 2011-04-15 2012-10-18 Wvt Breiding Gmbh Modularer Roststab, Auflageelement, Brennbahnelement und Fußelement dafür sowie Vorschubrost einer Verbrennungsanlage
DE202011005341U1 (de) 2011-04-15 2014-05-20 Wvt Breiding Gmbh Modularer Roststab, Auflageelement, Brennbahnelement und Fußelement dafür sowie Vorschubrost einer Verbrennungsanlage
CN110214249A (zh) * 2017-12-28 2019-09-06 三菱重工环境·化学工程株式会社 机械炉排炉用密封装置及机械炉排炉

Also Published As

Publication number Publication date
RU2377469C1 (ru) 2009-12-27
RU2008110484A (ru) 2009-09-27

Similar Documents

Publication Publication Date Title
EP0621449B1 (fr) Procédé pour la combustion de déchets sur une grille de combustion ainsi qu'une grille de combustion pour la mise en oeuvre du procédé et barreau pour la fabrication d'une telle grille
DE19648128C2 (de) Rost für eine Feuerungsanlage
EP0815396B1 (fr) Grille de combustion et procede d'optimisation du fonctionnement d'une grille de combustion
EP1975507A1 (fr) Grille d'avance pour foyers de combustion
EP0921354B1 (fr) Plaque de grille refroidie par liquide
EP0713056B1 (fr) Barreau de grille avec dispositif de refroidissement
EP0954722A1 (fr) Grille de combustion a refroidissement par eau
WO2013056687A1 (fr) Module à gradins pour grille de combustion à mouvement d'avance
DE102015015133A1 (de) Regenerativer Wärmeübertrager mit verbessertem Dichtrahmen
WO1999032831A1 (fr) Barreau de grille pour grille de combustion et procede pour son refroidissement
EP1744101A2 (fr) Admission de liquide de refroidissement avec cylindre pour barreau de grille
EP2306086B1 (fr) Barreau de grille
DE102008062992C5 (de) Drehdurchführung, insbesondere für ein flüssiges Arbeitsmedium
DE19632316C1 (de) Rostplatte
EP1983261B1 (fr) Unité de combustion avec grille d'avance et dispostif d'alimentation en liquide de refroidissement
CH697973B1 (de) Rostwalze.
DE4119405C1 (fr)
DE4137342A1 (de) Sonnenkollektor
DE19749227C2 (de) Wassergekühlter Feuerungsrost
EP3250855B1 (fr) Dispositif d'amenée d'air pour un incinérateur
DE102008038663A1 (de) Wärmetauscher mit einem Rohrbündel aus parallel zueinander verlaufenden, aus Kunststoff bestehenden Rohren
EP1574784B1 (fr) grille à rouleaux
EP3505678B1 (fr) Dispositif d'aiguille et aiguillage
DE504019C (de) Duesenanordnung fuer Feuerungen
DE102019129171A1 (de) Roststab für Stufenrost

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20080223

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

AKX Designation fees paid

Designated state(s): ES GR SE

REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20101001