EP2306086A2 - Barreau de grille - Google Patents

Barreau de grille Download PDF

Info

Publication number: EP2306086A2
Authority: EP; European Patent Office
Prior art keywords: grate bar; grate; bar according; upper side; wear plate
Prior art date: 2009-09-23
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.): Granted

Application number

EP10008873A

Other languages

German (de)

English (en)

Other versions

EP2306086B1 (fr

EP2306086A3 (fr

Inventor

Jochen Poschlod

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 Power 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.)

2009-09-23

Filing date

2010-08-26

Publication date

2011-04-06

2010-08-26 Application filed by ThyssenKrupp Xervon Energy GmbH filed Critical ThyssenKrupp Xervon Energy GmbH

2010-08-26 Priority to PL10008873T priority Critical patent/PL2306086T3/pl

2011-04-06 Publication of EP2306086A2 publication Critical patent/EP2306086A2/fr

2013-02-20 Publication of EP2306086A3 publication Critical patent/EP2306086A3/fr

2017-12-27 Application granted granted Critical

2017-12-27 Publication of EP2306086B1 publication Critical patent/EP2306086B1/fr

Status Active legal-status Critical Current

2030-08-26 Anticipated expiration legal-status Critical

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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

Definitions

the present invention relates to a grate bar for placement in a grate of an incinerator.
combustion grate An important component of a combustion plant, such as a waste incineration plant for the thermal utilization of waste, is a combustion grate.
a combustion grate On such a combustion grate arranged horizontally or inclined in an incinerator, the combustible material travels from a first end to a second end, the first end being the feedstock for the kiln and the second end typically being referred to as a burnout grate on which the thermal conversion of the kiln concludes.
Combustion grates are nowadays usually constructed from a plurality of individual grate bars, which are joined together to form a corresponding combustion grate. This structure allows for easy replacement of individual grate bars in case of damage to individual areas of the grate.
the grate bars are usually set in rows next to each other, wherein the rows are arranged one above the other like a step, so that the rows partially overlap.
the individual rows are mutually displaceable to allow a transport of the fuel by a displacement of the overlapping grate bar rows against each other.
the grate bars used in such incinerators and of these Gratings formed must on the one hand have sufficient mechanical stability in order to be able to absorb and transport the firing material, and on the other hand they must have suitable high-temperature resistance in order to be able to withstand the temperatures occurring during the thermal conversion of the firing material.
the grate bars or gratings are flown from an underside with an air flow and have outlet openings, through which the incoming combustion air can pass into the kiln.
Such grates or grate bars are for example from the DE 20111804 U1 known.
the European patent specification EP 1 612 483 B1 discloses a corresponding grate bar for use in incinerators, which is flown from an underside with an air flow, wherein the grate bars shown here have air ducts over which the stream of air flowed from below is passed through the grate so that it lies on the lying in the feed direction longitudinal side of the Roststabes exit and there flows into the kiln.
a problem with the use of rust or grate bars in incinerators is the high-temperature corrosion occurring there.
High-temperature corrosion is a phenomenon similar to wet corrosion, but in this case corrosion is not caused by aqueous media, but rather by reactions of the material with the kiln or gaseous compounds produced during combustion.
halide-containing salts under the conditions prevailing in incinerators lead to the formation of volatile halides which attack the protective oxide layer formed on the material and thus lead to corrosion of the materials.
a grate bar for arrangement in a grate of a combustion plant, with an upper side, an end face, a rear longitudinal face and a lower face, wherein the upper face and end face merge into one another via an arc section, which is characterized in that at least below the arc section a wear plate is arranged.
the inventively provided wear plate is preferably arranged at a distance from the arc section on the inside of the grate bar.
a grate bar according to the invention may have on its upper side an outlet opening for gaseous media directed against the lower side, such as, for example, combustion air. Through this opening, the combustion air passes from the area below the grate bar in the firing rod located on the grate bar. As a result, combustion air is passed into the kiln in such a way that a sufficient supply of the combustion process with combustion air is ensured.
gaseous media directed against the lower side
the inventively provided wear plate may be attached to a central rib of the grate bar or be formed on this.
this is integrally formed, so that the wear plate is integrally formed on a central rib of the grate bar.
this can be cast, for example, from a suitable material.
the above-mentioned center rib may comprise support webs or cooling webs in a grate bar according to the invention, via which the center rib is supported relative to the upper side of the grate bar.
the support webs or cooling webs can fulfill air-conducting functions and ensure guidance of the air flow directed from below against the grate bar to the outlet opening arranged at the top of the grate bar.
a grate bar according to the invention can have recesses, in particular in the region of the center rib, via which a plurality of grate bars can be connected to one another.
connecting means for example connecting webs are suitable, which are insertable into the recesses.
a grate bar according to the invention can have a support section with which it can be placed on a holding bar.
the support rod serves at the same time as a pivot bearing, around which a rotation of the grate bar is made possible when moving superposed, individual grate sections forming grate bars.
this has a support section both in the front region of the grate bar and in the rear region. This makes it possible to turn the grate bar in the case of too large corrosion phenomena in the region of the front arc section and so to make the rear section of the grate bar to a front section. This doubles the service life of the individual grate bar.
this is designed mirror-symmetrically for this purpose to a transversely to the longitudinal extent of the grate bar mirror plane.
the wear plate is formed from a different material from the rest of the material of the grate bar.
the material of the wear plate on a higher high temperature corrosion resistance as the material of the rest of the grate bar.
the wear plate is attached to the grate bar by suitable fastening means such as welding, screwing and the like or via a press fit.
the grate bar in a central rib having a shape corresponding to the wear plate recess into which the wear plate is inserted and clamped there in a suitable manner.
Fig. 1 shows a grate bar 1 according to the invention with a top 2, an end face 3, a rear longitudinal surface 4 and a bottom 5.
the grate bar 1 according to the invention may have a central rib 11 which is supported by support webs or cooling webs 12 with respect to the upper side 2.
the center rib 11 may have recesses 13, in which connecting means, such as Connecting rods are insertable, whereby a plurality of grate bars 1 according to the invention can be combined to form a grate.
connecting means such as Connecting rods
a wear plate 7 is arranged at the center rib 11.
the wear plate 7 is preferably spaced from the arc section 6 and may have support webs 17, via which it is supported relative to the center rib 11.
the grate bar 1 according to the invention has a support part 14 with which it rests on a support rod 18.
the grate bar 1 according to the invention can be arranged in a grid overlapping to adjacent grate bars, wherein it rests with a foot 15 on the top of a grate bar adjacent to its end face 3.
Fig. 2 shows an embodiment of a grate bar 1 according to the invention, also with a top 2, an end face 3, a rear longitudinal face 4 and a bottom 5.
Fig. 2 shown grate bar corresponds essentially to the structure of the grate bar, as in Fig. 1 is shown.
the in Fig. 2 However, shown grate bar has below the outlet opening 10 and adjacent to the wear plate 7 has a passage 16, via which can flow from the bottom 5 of combustion air flowed into a transfer port 19 before it exits through the outlet opening on the top of the grate bar 1 according to the invention and in the Brenngut arrives.
the overflow channel 19 begins in the region of the foot 15 and terminates in the present embodiment in the region of the end of the arranged on the upper side 2 outlet opening 10.
the brought up from the bottom 5 combustion air can also get into the space 20 above the foot 15 and from there via the overflow channel 19 to the outlet opening 10.
the arc section 6 can be cooled by means of the air flow prevailing in the overflow channel 19, whereby the occurring at the surface of the arc section 6 high-temperature corrosion can be reduced. This leads to a further extension of the service life of the grate bar 1 according to the invention.
Fig. 3 shows an embodiment of a grate bar 1 according to the invention, which is designed for double-sided support on a support rod.
the in Fig. 3 shown grate bar also has a top 2, a bottom 5, an end face 3 and a rear longitudinal surface 4, wherein end face 3 and rear longitudinal surface 4 are mirror-symmetrical to each other.
wear plates 7, 9 are arranged, which to the above lying arc sections 6, 8 are spaced.
the wear plates 7, 9 are integrally formed on a central rib 11.
the center rib 11 also has recesses 13, in which connecting means are insertable to assemble a plurality of grate bars 1 to a grid.
the center rib 11 has support webs or cooling webs 12, via which it is supported relative to the upper side 2.
an outlet opening 10 is arranged on the upper side 2, via which escape from the underside 5 of incoming combustion air and can get into the lying on top of the kiln.
combustion rods 1 according to the invention are arranged relative to one another in such a way that the support part 21 comes to rest on a support rod, while the foot 15 comes to rest on the upper side of a grate rod adjacent to the end surface 3.
the wear plate 7 can now first ensure that the functionality of the grate bar 1 is maintained. In the course of the grate bar 1 can be reversed, so that the corrosively attacked arc section 6 comes to rest in the rear region of the grate bar 1 and this is placed on the support section 14 on a support rod. By then adjacent to corrosive attacked arc section grate bar the attacked area of the grate bar 1 is shielded and is not exposed to any further high-temperature corrosion. As a result, the service life of the grate bar according to the invention can be further increased.

Landscapes

Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Combustion & Propulsion (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Incineration Of Waste (AREA)
Air-Flow Control Members (AREA)

EP10008873.1A 2009-09-23 2010-08-26 Barreau de grille Active EP2306086B1 (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
PL10008873T PL2306086T3 (pl)	2009-09-23	2010-08-26	Rusztowina

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE200910042722 DE102009042722A1 (de)	2009-09-23	2009-09-23	Roststab

Publications (3)

Publication Number	Publication Date
EP2306086A2 true EP2306086A2 (fr)	2011-04-06
EP2306086A3 EP2306086A3 (fr)	2013-02-20
EP2306086B1 EP2306086B1 (fr)	2017-12-27

Family

ID=42831582

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP10008873.1A Active EP2306086B1 (fr)	2009-09-23	2010-08-26	Barreau de grille

Country Status (7)

Country	Link
EP (1)	EP2306086B1 (fr)
DE (1)	DE102009042722A1 (fr)
DK (1)	DK2306086T3 (fr)
PL (1)	PL2306086T3 (fr)
PT (1)	PT2306086T (fr)
RU (1)	RU2010139008A (fr)
TR (1)	TR201802367T4 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
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
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
DE102014008858A1 (de)	2014-06-16	2015-12-17	Joachim Kümmel	Verfahren zur Verbrennung von Abfall und Biomassen auf einem Flossenwand-Stufenrost sowie Vorrichtung zur Durchführung des Verfahrens

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE20111804U1 (de)	2001-07-16	2001-09-27	WVT Breiding GmbH, 58239 Schwerte	Rost und Roststäbe
EP1612483B1 (fr)	2004-07-03	2008-07-23	AE & E Lentjes GmbH	Elément de grille, grille de combustion associée et installation d'incinération de matière résiduelle

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CH652476A5 (de) *	1983-05-20	1985-11-15	Theodor Koch	Roststab.
DE3570119D1 (en) *	1984-05-21	1989-06-15	Theodor Koch	Furnace, especially for the combustion of refuse, coal, wood and industrial waste
JPH11504700A (ja) *	1995-03-23	1999-04-27	コッホ，テオドール	燃焼炉の火格子
DE19528310A1 (de) *	1995-08-02	1997-02-06	Abb Management Ag	Rost für eine Feuerungsanlage

2009
- 2009-09-23 DE DE200910042722 patent/DE102009042722A1/de not_active Ceased
2010
- 2010-08-26 PL PL10008873T patent/PL2306086T3/pl unknown
- 2010-08-26 DK DK10008873.1T patent/DK2306086T3/en active
- 2010-08-26 PT PT100088731T patent/PT2306086T/pt unknown
- 2010-08-26 EP EP10008873.1A patent/EP2306086B1/fr active Active
- 2010-08-26 TR TR2018/02367T patent/TR201802367T4/tr unknown
- 2010-09-23 RU RU2010139008/06A patent/RU2010139008A/ru not_active Application Discontinuation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE20111804U1 (de)	2001-07-16	2001-09-27	WVT Breiding GmbH, 58239 Schwerte	Rost und Roststäbe
EP1612483B1 (fr)	2004-07-03	2008-07-23	AE & E Lentjes GmbH	Elément de grille, grille de combustion associée et installation d'incinération de matière résiduelle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
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
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
DE102014008858A1 (de)	2014-06-16	2015-12-17	Joachim Kümmel	Verfahren zur Verbrennung von Abfall und Biomassen auf einem Flossenwand-Stufenrost sowie Vorrichtung zur Durchführung des Verfahrens

Also Published As

Publication number	Publication date
DE102009042722A1 (de)	2011-03-24
PL2306086T3 (pl)	2018-06-29
DK2306086T3 (en)	2018-04-09
TR201802367T4 (tr)	2018-03-21
PT2306086T (pt)	2018-03-06
RU2010139008A (ru)	2012-03-27
EP2306086B1 (fr)	2017-12-27
EP2306086A3 (fr)	2013-02-20

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Publication	Publication Date	Title
EP0499912B1 (fr)	1994-10-26	Barreau de grille et grille pour installations de combustion
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