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WO2018166587A1 - Barreau de grille, grille et installation de combustion - Google Patents

Barreau de grille, grille et installation de combustion Download PDF

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Publication number
WO2018166587A1
WO2018166587A1 PCT/EP2017/056054 EP2017056054W WO2018166587A1 WO 2018166587 A1 WO2018166587 A1 WO 2018166587A1 EP 2017056054 W EP2017056054 W EP 2017056054W WO 2018166587 A1 WO2018166587 A1 WO 2018166587A1
Authority
WO
WIPO (PCT)
Prior art keywords
grate
grate bar
cooling
bar
cooling tubes
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.)
Ceased
Application number
PCT/EP2017/056054
Other languages
German (de)
English (en)
Inventor
Theodor Koch
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.)
SEKO-PATENT GmbH
Seko Patent GmbH
Original Assignee
SEKO-PATENT GmbH
Seko Patent 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 SEKO-PATENT GmbH, Seko Patent GmbH filed Critical SEKO-PATENT GmbH
Priority to PCT/EP2017/056054 priority Critical patent/WO2018166587A1/fr
Priority to EP17710905.5A priority patent/EP3596390A1/fr
Publication of WO2018166587A1 publication Critical patent/WO2018166587A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H17/00—Details of grates
    • 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 grate bar, a grate and an incinerator.
  • Combustion systems with combustion chambers for use in which the fuel is applied, for example, to a mechanically operated grate and burned on it.
  • Combustion plants are generally processed combustion material with high and low calorific value, so that in the grate elements used large heat-related problems can occur.
  • Rostköpf Kunststoff the
  • Grate elements may burn or corrode due to excessive thermal stress.
  • grate bars are known, which are cooled by means of cooling water, wherein the cooling water is passed through a grate bar cast in a 1-strand cooling coil of a cooling pipe system.
  • the cooling water enters the cooling pipe system and is redirected in the cooling coil via deflections, turns and / or bends until it exits several times in the grate bar body.
  • the cooling water dissipates the heat from the grate, whereby it is cooled.
  • a disadvantage is that due to the overall long way and by the deflections, turns and / or bends to the outlet, a high pressure loss arises. This pressure loss is due to the interconnection of several
  • the object of the present invention is to provide a grate bar in which the problems known in the prior art are solved.
  • Grate bar for incinerators with a substantially closed, facing the combustion side
  • the grate cooling tube system has a
  • Input manifold for supplying the cooling liquid, an output collector for discharging the cooling liquid and a plurality, each individually fluid-tight with the
  • Input manifold and output collector connected cooling tubes Input manifold and output collector connected cooling tubes.
  • the cooling water is thus conducted via cooling tubes which are laid or interconnected in parallel.
  • the total flow cross-section increases, which is advantageously a
  • the cross-sectional area of each of the input manifold and output collector can be selected correspondingly large.
  • the cross-sectional area of each of the input manifold and the output collector may be selected to be in the
  • a plurality of the cooling tubes are substantially in a plane parallel to
  • cooling tubes eg, two, three, or more cooling tubes branch off the input manifold and extend into
  • the cooling water flows through these cooling tubes to the front of the grate bar and is deflected here. Thereafter, the cooling water also flows back through several cooling tubes (preferably also two, three or more cooling tubes) to the output collector in the rear region of the grate bar. It can thus be a uniform
  • At least two adjacent cooling tubes are connected to the input manifold via a first end thereof
  • the number of cooling tubes for each of the flow and return can be identical.
  • Input distributor and output collector preferably
  • the input manifold and output collector may each be aligned substantially perpendicular to the extension of the cooling tubes and are with all
  • the cross-sectional area of the input distributor can be substantially equal to the be summed cross-sectional area of the branching therefrom cooling tubes.
  • the cross-sectional area of the output header may be substantially equal to the summed cross-sectional area of the cooling tubes opening into the output header.
  • the cooling tubes open into a deflecting distributor of the grate bar arranged in the front region of the grate bar.
  • the Umlenkverteiler may be aligned substantially perpendicular to the extension of the cooling tubes and is fluid-tightly connected to all cooling tubes.
  • the cross-sectional area of the deflection distributor can be substantially equal to the summed cross-sectional area of those cooling tubes through which the cooling water flows into the deflection distributor.
  • Cross-sectional area of the Umlenkverteilers be substantially equal to the summed cross-sectional area of those cooling tubes through which the cooling water flows out of the Umlenkverteiler.
  • the cross-sectional area of all the cooling tubes may be substantially the same. Due to the arrangement of the
  • Umlenkverteilers in the front region of the grate bar, this front area, which is exposed during operation of the grate bar (firing) a very high heat input, cooled particularly reliable.
  • the cooling tubes are connected via a second end thereof, which is opposite to the first end, fluid-tightly connected to the Umlenkverteiler.
  • the input distributor and output collector are arranged in the region of the side wall of the grate bar and for this purpose run essentially parallel. In this embodiment, the
  • Input manifold and output collector substantially in the direction of the longitudinal extent of the grate bar and the cooling tubes extend substantially perpendicular thereto.
  • a cooling tube in the front region of the grate bar may have a cross-sectional area which is increased in relation to the cross-sectional area of the respective further cooling tubes.
  • At least one support area cooling tube is arranged offset to a plane along which the further cooling tubes extend. Due to the staggered arrangement, portions of the grate bar which are exposed to a very high heat input, such as e.g. the front area of the grate bar
  • the cooling tubes are round, oval or angular in cross-section.
  • the aspect ratio between the maximum width and maximum height of at least one of the cooling tubes in cross section may be greater than 1, wherein the width of the cooling tube is defined parallel to the surface of the grate bar, and wherein the height of the cooling tube segment perpendicular to Width is defined.
  • the aspect ratio is in a range between greater than 1 and 5.
  • the grate bar comprises at least one grate bar connecting pipe, which for
  • Fluid communication with at least one further, adjacent grate bar is formed, preferably such that the grate bar connecting pipe with the input manifold and output collector of each adjacent grate bars
  • the wiring effort is thereby reduced.
  • the connections of the grate bar connecting tube between the output collector of a grate bar and the input manifold of a respective adjacent grate bar respectively welded joints.
  • the connections may each be flange connections.
  • the invention further relates to a grate comprising a plurality of grate bars according to any one of claims 1-9, wherein each adjacent grate bars are fluid-tightly interconnected via at least one grate bar connecting tube.
  • Incineration plants are used, wherein at least one
  • Transverse row is arranged with grate bars according to the invention movable in the grate and, following the first transverse row, a next transverse row with grate bars according to the invention is fixedly arranged. It can thereby be achieved that the combustion material is continuously in the direction of
  • the grate bar with its contact surface overlaps the surface of a subsequent grate bar in an imbricated manner.
  • the invention further relates to a combustion plant comprising a grate according to claim 10.
  • Fig. 1 is a sectional view of a grate bar in
  • FIGS. 2A, B show several sectional views of a grate bar in a second aspect of the first embodiment
  • 3A, B show several sectional views of a grate bar in a third aspect of the first embodiment
  • Fig. 4 is a sectional view of a grate bar in
  • 5A, B show several sectional views of a grate bar in a second aspect of the second embodiment
  • Fig. 6 is a sectional view of a grate bar transverse row comprising a plurality of grate bars
  • Fig. 7 exemplary cross-sections of cooling tubes.
  • Figure 1 shows a sectional view of a grate bar 100 in plan view in a first aspect according to a first embodiment.
  • the grate bar 100 is a cast element with a cast and thus in the grate bar 100 integrated grate cooling tube system 102 for passing a
  • Coolant e.g. Cooling water.
  • the cooling water can be passed through the grate bar 100 by means of the grate cooling tube system 102 to cool it or dissipate heat.
  • the cooling water can be passed through a plurality of juxtaposed grate bars (not shown), these grate bars via corresponding
  • the cooling water can then one
  • Heat exchanger (not shown) can be supplied, in which the cooling water can be cooled before it is fed back to a respective grate bar in a closed circuit.
  • the cooling water can be cooled before it is fed back to a respective grate bar in a closed circuit.
  • the cooling water can also be heated.
  • the grate cooling tube system 102 includes an input manifold 104 for distributing the cooling water.
  • Input distributor 104 may be connected at a portion to an input line 106 via which the
  • Cooling water is passed into the grate bar 100.
  • Cooling water is passed into the grate bar 100.
  • Input manifold 104 two cooling tubes 108 ', 108 1 1 from which extend to the front portion of the grate bar 100, parallel to each other.
  • the two cooling tubes 108 ', 108''in turn lead into a Umlenkverteiler 110, which in the front region of the grate bar 100 in Substantially perpendicular to the cooling tubes 108 ', 108 1 1 extends.
  • the Umlenkverteiler 110 may extend over the essential width of the front portion of the grate bar 100.
  • From Umlenkverteiler 110 in turn show two other cooling tubes 112 ', 112'', which - also substantially parallel to each other - extend to the rear of the grate bar 100.
  • These cooling tubes 112 ', 112'' open into an output collector 114.
  • the output collector 114 is in turn with a
  • Output collector 114 parallel incoming cooling water from the grate bar 100 is discharged.
  • the input distributor 104 and the output collector 114 are thus arranged together in the rear region of the grate bar 100. Further, the input manifold 104 and output collector 114 may be disposed at the same level.
  • a further cooling tube or support region cooling tube 118 can also be arranged, which can likewise extend substantially over the width of the front region.
  • This bearing area cooling tube 118 is thus arranged offset with respect to a plane to which the cooling tubes 108 ', 108'',112', 112 '' extend, more precisely arranged offset in the downward direction.
  • This support region cooling tube 118 is connected via respective connecting lines (described later) to individual ones of the cooling tubes 108 ', 108 ", 112', 112" and thus likewise flows through cooling water.
  • the support area cooling tube 118 is connected to the respective outer cooling tubes 108 'and 112'.
  • Input line 106 into the input manifold 104 and then flows in a direction indicated by arrows in parallel over the two cooling pipes 108 ', 108' '(ie divided into several parallel lines) to the front region of the grate bar 100 and the Umlenkverteiler 110 arranged therein.
  • the cooling water is deflected by the Umlenkverteiler 110 in a direction indicated by arrows and then passes also distributed in parallel in the two cooling tubes
  • the cooling water then flows in the opposite direction in parallel over the two cooling tubes 112 ', 112' '
  • cooling water via a parallel interconnection of the respective combination of cooling tubes, that is Cooling tubes 108 ', 108''(for the flow) and cooling tubes
  • the total cross-sectional area of the entire line of the cooling water from the rear area to the front area of the grate bar 100 is composed of the
  • FIGS. 2A, B show the grate bar 100 in a second
  • FIG. 2A shows the grate bar 100 in a frontal sectional view
  • FIG. 2B shows the grate bar 100 in a side sectional view.
  • the grate bar 100 has a total of six
  • Cooling tubes arranged namely cooling tubes 108 ', 108'',108''' (flow) and cooling tubes 112 ', 112'',112'' (return).
  • the rear portion of the grate bar 100 ie, the right end of the grate bar 100 in FIG. 2B
  • a support portion 120 formed with a cup-shaped socket.
  • This socket engages a suitably trained pin 122 of a scaffold tower of an incinerator (both not shown).
  • the front portion of the grate bar 100 includes one between its surface and
  • Combustion surface 124 and front edge 126 of the grate bar 100 rounded nose portion 128.
  • the nose portion 128 is hereby as a continuation of the overhead
  • Combustion surface 124 continues. At the bottom of the front portion of the grate bar 100 is the aforementioned one
  • the grate bar 100 is bounded on its underside by edge edges and longitudinal side edges 132 ', 132 ", respectively.
  • the input manifold 104 is fed via the input line 106 with cooling water.
  • the input line 106 is laid in a portion behind the pin 122.
  • the support area 130 is cooled by the support area cooling tube 118 arranged therein.
  • This support region cooling tube 118 is connected, for example via respective intermediate tubes with the cooling tubes.
  • the support area cooling tube 118 is connected to the
  • FIGS. 3A, B show the grate bar 100 according to the first embodiment in a third aspect. Compared to the second aspect shown in Figures 2A, B, the
  • cooling tubes (for illustrative reasons, only cooling tube 108 'can be seen) follow the course from the curvature in the portion of the leading edge 126 to a portion in the support area
  • Figure 4 shows a grate bar 200 in a sectional view in plan view in a first aspect according to a second embodiment.
  • the grate cooling tube system 202 includes an input manifold 204 for distributing the cooling water.
  • the input distributor 204 is arranged in the region of the side wall of the grate bar 200 and extends for this purpose in the
  • Input manifold 204 further arranged a front edge cooling tube 210 with an enlarged cross-section.
  • a front edge cooling tube 210 with an enlarged cross-section.
  • the leading edge cooling tube 210 and the individual cooling tubes 206 1 -206 n individually discharge into an output manifold 214.
  • the cooling water can be distributed through the input manifold 204 to the cooling tubes 206 1 -206 n and the diverter manifold 210 as indicated by arrows. Over this, the heated cooling water flows to the output collector 214, is collected there, and then flows over the
  • Rust bar 200 completely reliably cooled.
  • FIGS. 5A, B show the grate bar 200 in a second
  • cup-shaped socket formed in which a
  • the grate bar 200 is bounded on its underside by edge edges and longitudinal side edges 232 ', 232 ", respectively.
  • In the support area 230 is also a
  • Pad cooling tube 234 is arranged, which may extend substantially across the width of the front portion 230. About this support area cooling tube 234 of the support area 230 is cooled separately.
  • Support area cooling tube 234 is replaced by the
  • Input distributor 204 via a shown in the figure
  • Input manifold 204 fed via an input line 238 with cooling water.
  • the heated cooling water is
  • Figure 6 shows sectional views of a plurality of grate bars 100'-100 "" arranged side by side to form a transverse row 300 from a grate for an incinerator.
  • the individual grate bars 100'-100 "' are configured according to the second aspect of the first embodiment shown in FIGS. 2A, B.
  • grate bars may also be configured according to other examples, aspects or designs.
  • An outer grate bar 100 'of the transverse row 300 (in FIG. 6, the grate bar 100' on the far left) is supplied via a supply line 302 with cooling water. The cooling water flows into one with the
  • the cooling water then also passes in parallel across the three cooling tubes 112'-112 '' '(out of the plane of the figure) back to the rear region of the grate bar 100' and opens into the output collector 114.
  • the output manifold 114 is fluid tightly connected to one end of a grate bar connecting tube 304 ', which in turn is connected at its other end to the input manifold of the adjacent grate bar 100 ".
  • the cooling water flows in the previously described way and
  • the respective grate bar connecting pipes 304'-304' '' are U-shaped and each extending below the respective side edges
  • Cooling water discharged via a discharge line 306 from the grate bar transverse row 300 and then can not eg one shown are supplied to the heat exchanger in which the cooling water is cooled before it is returned to the grate bar 100 'in a closed circuit, for example.
  • the grate bar connection pipes 304'-304 ''' may be welded to the respective output manifold and input manifold of the adjacent grate bars 100'-100''''.
  • a flange connection can be provided for connection.
  • exemplary cooling tubes 108, 112 which may be used in the previously described exemplary configurations.
  • the cooling tubes 108,112 may be round, oval or angular in cross-section (with or without
  • the cross-sectional areas can be different.
  • the width of the cooling tube 108, 112 is defined parallel to the surface of the grate bar and the height of the cooling tube 108, 112 is defined perpendicular to the width.
  • the aspect ratio may be between 1 and 5.
  • Output collector and / or deflecting distributor in cross-section round, oval or square (not shown).

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)

Abstract

L'invention concerne un barreau de grille (100) pour des installations de combustion, comprenant une surface sensiblement fermée, tournée vers le côté de combustion, une partie support arrière, destinée à reposer sur un support de grille et une partie nez avant s'étendant entre la surface et le bord avant et pourvue d'une zone d'appui formée sur la face inférieure, ainsi qu'un système de tubes de refroidissement de grille (102) intégré à la barre de grille (100), pour le passage d'un liquide de refroidissement, le système de tubes de refroidissement de grille (102) présentant un répartiteur d'entrée (104) pour l'amenée du liquide de refroidissement, un collecteur de sortie (114) pour l'évacuation du liquide de refroidissement et plusieurs tubes de refroidissement (108', 108'', 112', 112'') reliés chacun de manière étanche aux fluides au répartiteur d'entrée (104) et au collecteur de sortie (114).
PCT/EP2017/056054 2017-03-15 2017-03-15 Barreau de grille, grille et installation de combustion Ceased WO2018166587A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/EP2017/056054 WO2018166587A1 (fr) 2017-03-15 2017-03-15 Barreau de grille, grille et installation de combustion
EP17710905.5A EP3596390A1 (fr) 2017-03-15 2017-03-15 Barreau de grille, grille et installation de combustion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/056054 WO2018166587A1 (fr) 2017-03-15 2017-03-15 Barreau de grille, grille et installation de combustion

Publications (1)

Publication Number Publication Date
WO2018166587A1 true WO2018166587A1 (fr) 2018-09-20

Family

ID=58314214

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/056054 Ceased WO2018166587A1 (fr) 2017-03-15 2017-03-15 Barreau de grille, grille et installation de combustion

Country Status (2)

Country Link
EP (1) EP3596390A1 (fr)
WO (1) WO2018166587A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020077957A1 (fr) * 2018-10-17 2020-04-23 上海康恒环境股份有限公司 Grille refroidie à l'eau pour incinérateur de déchets

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3902159A1 (de) * 1989-01-25 1990-07-26 Nils Erik Tunstroemer Vorrichtung zum verbrennen und/oder thermischen zersetzen von brennmaterial, insbesondere festen brennstoffen
EP0757206A2 (fr) * 1995-08-02 1997-02-05 Asea Brown Boveri Ag Grille pour un foyer
DE19613507C1 (de) * 1996-04-04 1997-08-21 Evt Energie & Verfahrenstech Rostplatte
EP0811803A2 (fr) * 1996-06-04 1997-12-10 MARTIN GmbH für Umwelt- und Energietechnik Elément de grille et grille avec refroidissement à liquide
DE19650742C1 (de) * 1996-12-06 1998-02-19 Metallgesellschaft Ag Mit Wasser gekühlter Verbrennungsrost
JP2000146141A (ja) * 1998-11-06 2000-05-26 Hitachi Zosen Corp ストーカ式ごみ焼却炉の火格子の冷却構造

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19648128C2 (de) * 1996-11-21 2002-11-07 Alstom Rost für eine Feuerungsanlage
DE102004034322B4 (de) * 2004-07-15 2006-09-28 Lurgi Lentjes Ag Rostplatte

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3902159A1 (de) * 1989-01-25 1990-07-26 Nils Erik Tunstroemer Vorrichtung zum verbrennen und/oder thermischen zersetzen von brennmaterial, insbesondere festen brennstoffen
EP0757206A2 (fr) * 1995-08-02 1997-02-05 Asea Brown Boveri Ag Grille pour un foyer
DE19613507C1 (de) * 1996-04-04 1997-08-21 Evt Energie & Verfahrenstech Rostplatte
EP0811803A2 (fr) * 1996-06-04 1997-12-10 MARTIN GmbH für Umwelt- und Energietechnik Elément de grille et grille avec refroidissement à liquide
DE19650742C1 (de) * 1996-12-06 1998-02-19 Metallgesellschaft Ag Mit Wasser gekühlter Verbrennungsrost
JP2000146141A (ja) * 1998-11-06 2000-05-26 Hitachi Zosen Corp ストーカ式ごみ焼却炉の火格子の冷却構造

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020077957A1 (fr) * 2018-10-17 2020-04-23 上海康恒环境股份有限公司 Grille refroidie à l'eau pour incinérateur de déchets

Also Published As

Publication number Publication date
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