EP0713056B1 - Barreau de grille avec dispositif de refroidissement - Google Patents

Barreau de grille avec dispositif de refroidissement Download PDF

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Publication number
EP0713056B1
EP0713056B1 EP95116648A EP95116648A EP0713056B1 EP 0713056 B1 EP0713056 B1 EP 0713056B1 EP 95116648 A EP95116648 A EP 95116648A EP 95116648 A EP95116648 A EP 95116648A EP 0713056 B1 EP0713056 B1 EP 0713056B1
Authority
EP
European Patent Office
Prior art keywords
grate
block
water
blocks
cooled
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 - Lifetime
Application number
EP95116648A
Other languages
German (de)
English (en)
Other versions
EP0713056A1 (fr
Inventor
Rolf Hauser
Daniel Morant
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.)
Hitachi Zosen Innova AG
Original Assignee
Von Roll Umwelttechnik AG
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 Von Roll Umwelttechnik AG filed Critical Von Roll Umwelttechnik AG
Publication of EP0713056A1 publication Critical patent/EP0713056A1/fr
Application granted granted Critical
Publication of EP0713056B1 publication Critical patent/EP0713056B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • F23H2900/00—Special features of combustion grates
    • F23H2900/03021—Liquid cooled grates

Definitions

  • the invention relates to a cooled grate block according to the preamble of claim 1.
  • a grate block is known from document EP-A-0 621 449.
  • a row of grate blocks is in each case formed by several, usually 16 to 24 grate blocks, which are hung side by side on a support tube and be clamped together using a tie rod.
  • the Individual grate blocks are made using air flowing through them cooled, the combustion grates simultaneously as a oxidizing agent necessary for combustion.
  • the grate blocks are high exposed to thermal stress, the strong thermal stresses in the material of the rust blocks. It cracks can form in the material, which increases the risk of corrosion increases.
  • the grate blocks must be of high quality Material, for example made of high-alloy steel getting produced. Because of the large thermal expansions limits the size of the individual grate blocks; it is a relatively large number of grate blocks in a row of grate blocks necessary. It is disadvantageous that through the gaps between the individual rust blocks emerged through repeated expansion and contraction due to different block temperatures, caused by the combustion process as well as arrival and departure Shutting down the furnace, certain parts of the burned Waste (non-ferrous metals, dust etc.) fall through, which then get unburned into the slag.
  • the present invention is based on the object reduce the thermal stress on the grate block and a simpler assembly and maintenance technology to allow a grate that is also operationally withstands all requirements better.
  • FIG. 1 shows a grate element 3 as part of a grate for shown a plant for the thermal treatment of waste.
  • An inclined grating track settles in length composed of several grate elements 3; usually are three to five grate elements 3 in a row arranged.
  • several grate tracks can be placed side by side be attached; usually form a to four grate tracks the width of the grate.
  • the number of Grate elements 3 and the grate tracks depends on the given Flow rate of the waste and its calorific value from.
  • Each grate element 3 has several, possibly eight consecutively arranged rows of grate blocks 4,5, whereby a fixed grate block row 4 a movable Row of rust blocks 5 follows. There are 4.5 in each row of grate blocks several grate blocks 6 arranged side by side. Until now it was common to have 16 to 24 air-cooled grate blocks 6 'in to place a grate block row 4.5 next to each other. How Fig.1 shows, they were hung on a block holder tube 7 and by means of tie rods 14 and turnbuckle nuts (not shown) braced.
  • the block holder tubes 7 of the fixed grate block rows 4 are 1 carried by fixed brackets 8.
  • the Block holder tubes 7 of the movable grate block rows 5 are fixed in brackets 9, the movable grate car 10 are assigned.
  • Each grate element 3 is with a such grate car 10 equipped.
  • the grate 10 is by means of two hydraulic cylinders 11 arranged in parallel driven and thereby on rollers 12 on treads 13 moved back and forth.
  • the moving ones Grate block rows 5 moves, which have a push and shear effect on the waste material located on the rust track 2 exercise so that always new Waste surfaces of thermal treatment in the Combustion chamber are exposed while at the same time conveying forward of the waste material.
  • the grate block 6 has a block body 20 of a U-shaped Cross section on, the upper wall in Fig. 3 and 4 is designated 23.
  • the outer surface of the top wall 23 forms a usable area 33 on which the one to be treated Waste comes to lie and along which it is transported becomes.
  • a rear wall 21 of the block body 20 is with a hook 22 for hanging on the block holder tube 7 (Fig. 1) provided.
  • the grate block 6 with an inclined bottom 28 and one Provide foot 26.
  • Each foot 26 is one Rust blocks 6 of the upper wall 23 of a subsequent one Rust blocks 6 assigned; they are mutually exclusive relatively displaceable.
  • a water supply line opens into the cooling space 27 30 in.
  • the water supply is in Fig. 3 marked with an arrow W1.
  • Parallel to the back wall 21 extends to the water supply line 30 connected water supply cross line 31, which on individual locations (three shown in Fig.2) with outlet openings 32 is provided.
  • This water leak is indicated in Fig. 3 with an arrow W2.
  • Of the Water supply cross line 31 branch several, if necessary three longitudinal water supply branch lines 34 from which extends to the front wall 24 extend and there are angled such that its outlet opening 35 immediately in front of the foot 26 located.
  • the water discharge branch pipes 40 extend obliquely along the bottom 28 and open into a parallel to the water supply cross line 31st arranged, opposite this water drainage cross pipe 42. From there, the heated water by means of a discharge line 43 in the direction of an arrow W5 (Fig. 4) led away from the cold room 27.
  • the water supply line 30 and the water discharge line 43 are on in a manner not shown Cold water low pressure system connected. A connection to a closed cooling water system with a built-in Heat exchangers are preferred.
  • the grate block 6 is viewed from below in the direction of an arrow L1 (Fig. 3) air as a necessary for combustion Oxidizer by several evenly along the Grid block width distributed between the floor 28 and the front wall 24 extending through the cooling space 27 Pipes 46 out.
  • the front wall 24 faces a plurality of air outlet openings assigned to the tubes 46 47, from which the combustion air in the direction of a Arrow L2 flows. Since the air is just a means of combustion, but not as a coolant as before is used, there are significantly fewer air outlet openings 47, laboriously cleaned due to constipation have to be needed than was usual up to now.
  • the first grate element 3, intended for quick ignition by start-up torches is, also from rust blocks 6 without pipes 46 and air outlet openings 47 exist because now the water instead the air provides cooling.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Processing Of Solid Wastes (AREA)
  • Road Paving Structures (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Air Conditioning Control Device (AREA)
  • Freezing, Cooling And Drying Of Foods (AREA)
  • Storage Of Fruits Or Vegetables (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Claims (11)

  1. Bloc de grille refroidi faisant partie d'une grille pour une installation de traitement thermique de déchets, comprenant une paroi supérieure (23) dont la surface extérieure forme une surface utile (33) sur laquelle les déchets à traiter viennent se placer et le long de laquelle les déchets sont transportés, dans lequel la paroi supérieure (23) délimite une chambre de refroidissement sous-jacente (27) qui est traversée par une conduite d'amenée d'eau (30, 31, 34) et une conduite d'évacuation d'eau (40, 42, 43), caractérisé en ce que la conduite d'amenée d'eau (30, 31, 34) et la conduite d'évacuation d'eau (40, 42, 43) se terminent dans la chambre de refroidissement (27) et présentent, l'une plusieurs ouvertures de sortie (35) et l'autre plusieurs ouvertures d'entrée (41), les ouvertures d'entrée (41) de la conduite d'évacuation d'eau (40, 42, 43) étant disposées dans la région d'un angle (25) formé entre la paroi supérieure (23) et une paroi avant (24).
  2. Bloc de grille selon la revendication 1, caractérisé en ce que la chambre de refroidissement (27), formée dans un corps de bloc (20) en forme de U, est fermée latéralement par deux parois latérales (29) et, en bas, par un fond (28) et par un pied (26), le pied (26) d'un bloc de grille (6) étant monté pour coulisser par rapport à la paroi supérieure (23) d'un bloc de grille (6) placé en aval.
  3. Bloc de grille refroidi selon la revendication 2, caractérisé en ce que les ouvertures de sortie (35) de la conduite d'amenée d'eau (30, 31, 34) sont disposées dans la région du pied (26).
  4. Bloc de grille refroidi selon une des revendications 2 et 3, caractérisé en ce que la conduite d'amenée d'eau (30, 31, 34) présente une conduite transversale (31) disposée parallèlement à une paroi arrière (21) du corps de bloc (20), et à laquelle sont raccordées plusieurs conduites de dérivation (34) qui se prolongent jusque dans la région avant de la chambre de refroidissement (27) et qui sont munies des ouvertures de sortie (35).
  5. Bloc de grille refroidi selon une des revendications 2 et 3, caractérisé en ce que la conduite d'évacuation d'eau (40, 42, 43) présente une conduite transversale (42) disposée parallèlement à une paroi arrière (21) du corps de bloc (20) et à laquelle sont raccordées plusieurs conduites de dérivation (40) qui se prolongent jusque dans la région avant de la chambre de refroidissement (27) et qui sont munies des ouvertures d'entrée (41).
  6. Bloc de grille refroidi selon la revendication 4, caractérisé en ce que la conduite transversale (31) est munie de plusieurs ouvertures de sortie d'eau additionnelles (32).
  7. Bloc de grille refroidi selon une des revendications 2 à 6, qui constitue une partie d'une grille d'incinération, d'une installation d'incinération des déchets, caractérisé en ce qu'une paroi avant (24) du corps de bloc (20) est munie de plusieurs ouvertures de sortie d'air (47) uniformément réparties sur la largeur du bloc de grille et auxquelles l'air constituant le comburant est acheminé à travers des tubes appropriés (46) qui traversent la chambre de refroidissement (27) entre le fond (28) et la paroi avant (24).
  8. Bloc de grille refroidi selon une des revendications 1 à 7, caractérisé en ce que la conduite d'amenée d'eau (30, 31, 34) et la conduite d'évacuation d'eau (40, 42, 43) sont raccordées à un circuit d'eau de refroidissement fermé, équipé d'un échangeur de chaleur.
  9. Grille composée de blocs de grille refroidis (6) selon une des revendications 1 à 8, dans laquelle plusieurs blocs de grille (6) accrochés à un tube porte-blocs (7) et réunis les uns aux autres forment une rangée de blocs de grille (4 ou 5 respectivement), caractérisée en ce que la rangée de blocs de grille (4 ou 5) est formée au maximum de quatre blocs de grille (6).
  10. Grille selon la revendication 9, caractérisée en ce que les parois latérales (29) des blocs de grille (6) adjacents sont boulonnées les unes aux autres.
  11. Grille selon une des revendications 9 et 10, comprenant plusieurs rangées de blocs de grille fixes (4) et plusieurs rangées de blocs de grille mobiles (5) qui sont disposées en se succédant en altemance, caractérisée en ce que les rangées de blocs de grille fixes (4) aussi bien que les rangées de blocs de grille mobiles (5) sont formées par des blocs de grille (6) refroidis par l'eau.
EP95116648A 1994-11-17 1995-10-23 Barreau de grille avec dispositif de refroidissement Expired - Lifetime EP0713056B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3452/94 1994-11-17
CH03452/94A CH688840A5 (de) 1994-11-17 1994-11-17 Kühlbarer Rostblock.

Publications (2)

Publication Number Publication Date
EP0713056A1 EP0713056A1 (fr) 1996-05-22
EP0713056B1 true EP0713056B1 (fr) 1999-05-19

Family

ID=4256258

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95116648A Expired - Lifetime EP0713056B1 (fr) 1994-11-17 1995-10-23 Barreau de grille avec dispositif de refroidissement

Country Status (14)

Country Link
US (1) US5617801A (fr)
EP (1) EP0713056B1 (fr)
JP (1) JP2831958B2 (fr)
AT (1) ATE180323T1 (fr)
CA (1) CA2161835A1 (fr)
CH (1) CH688840A5 (fr)
CZ (1) CZ290036B6 (fr)
DE (1) DE59505967D1 (fr)
DK (1) DK0713056T3 (fr)
ES (1) ES2087842T3 (fr)
FI (1) FI955535A (fr)
HU (1) HUT72543A (fr)
NO (1) NO305577B1 (fr)
PL (1) PL311406A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1191282A1 (fr) * 2000-09-22 2002-03-27 Von Roll Umwelttechnik AG Barreau de grille refroidi
WO2002035149A1 (fr) 2000-10-25 2002-05-02 Von Roll Umweltechnik Ag Cuve de grille en tant qu"element d"une grille pour installation de traitement thermique de dechets

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH689519A5 (de) * 1995-05-17 1999-05-31 Von Roll Umwelttechnik Ag Gekuehlter Rostblock.
JPH08319142A (ja) * 1995-05-25 1996-12-03 Chichibu Onoda Cement Corp 焼塊冷却装置
DE19648128C2 (de) * 1996-11-21 2002-11-07 Alstom Rost für eine Feuerungsanlage
NO312644B1 (no) * 1997-04-23 2002-06-10 Doikos Investments Ltd Vannkjölt trykkforbrenningsrist
EP0987494A1 (fr) 1998-09-15 2000-03-22 Asea Brown Boveri AG Procédé pour le refroidissement d'une grille d'un foyer et grille d'un foyer
EP0989364B1 (fr) 1998-09-24 2000-04-26 Von Roll Umwelttechnik AG Elément de grille et procédé de refroidissement de ce dernier
DE19929614C2 (de) * 1999-06-28 2001-04-26 Martin Umwelt & Energietech Feuerungsanlage mit flüssigkeitsgekühlten Rostelementen
TW457354B (en) * 1999-08-20 2001-10-01 Von Roll Umwelttechnik Ag Plant and grate block for the thermal treatment of waste materials
JP3734153B2 (ja) * 2001-06-08 2006-01-11 株式会社タクマ 水冷式火格子
DE10137520B4 (de) * 2001-08-01 2004-05-13 Martin GmbH für Umwelt- und Energietechnik Rostfeuerung
ITMI20041745A1 (it) * 2004-09-14 2004-12-14 Tm E S P A Termomeccanica Impianto di smaltimento rifiuti
US20090151609A1 (en) * 2007-12-15 2009-06-18 Hoskinson Gordon H Incinerator with pivoting grating system
JP5422291B2 (ja) * 2009-07-30 2014-02-19 株式会社タクマ 水冷式ストーカ炉

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE498538C (de) * 1930-05-23 L & C Steinmueller Wassergekuehlter Treppenrost
DE230498C (fr) * 1900-01-01
AT124441B (de) 1929-10-15 1931-09-10 Telefunken Gmbh Verfahren zur automatischen Lautstärkeregulierung.
DE624892C (de) * 1933-10-25 1936-01-30 Werner Koch Dr Wassergekuehlter Vorschubrost
US2171848A (en) * 1937-03-05 1939-09-05 Maurice A Hofft Water cooled grate bar
DE808263C (de) * 1948-10-02 1951-07-12 Steinmueller Gmbh L & C Selbstfoerdernder, wassergekuehlter Planrost
GB2143932A (en) * 1983-07-22 1985-02-20 Gordon Michael Priest Furnace
US5235921A (en) * 1991-11-08 1993-08-17 Dunham Environmental Services, Inc. Combustion system having a movable hearth
CH684118A5 (de) * 1993-04-20 1994-07-15 Doikos Investments Ltd Verfahren zum Verbrennen von Kehricht auf einem Verbrennungsrost sowie Verbrennungsrost zur Ausübung des Verfahrens und Rostplatte für einen solchen Verbrennungsrost.
CH688871A5 (de) * 1994-05-16 1998-04-30 Von Roll Umwelttechnik Ag Verfahren zur thermischen Energiegewinnung aus Abfallmaterial, insbesondere Muell.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1191282A1 (fr) * 2000-09-22 2002-03-27 Von Roll Umwelttechnik AG Barreau de grille refroidi
WO2002035149A1 (fr) 2000-10-25 2002-05-02 Von Roll Umweltechnik Ag Cuve de grille en tant qu"element d"une grille pour installation de traitement thermique de dechets
US6425336B1 (en) 2000-10-25 2002-07-30 Von Roll Umwelttechnik Ag Grate trough as part of a grate for a plant for the thermal treatment of waste

Also Published As

Publication number Publication date
JPH08219432A (ja) 1996-08-30
EP0713056A1 (fr) 1996-05-22
ES2087842T3 (es) 1999-08-16
CZ302595A3 (en) 1996-06-12
CH688840A5 (de) 1998-04-15
CA2161835A1 (fr) 1996-05-18
FI955535A0 (fi) 1995-11-16
NO954614D0 (no) 1995-11-15
JP2831958B2 (ja) 1998-12-02
ATE180323T1 (de) 1999-06-15
DK0713056T3 (da) 1999-11-08
DE59505967D1 (de) 1999-06-24
PL311406A1 (en) 1996-05-27
HUT72543A (en) 1996-05-28
NO954614L (no) 1996-05-20
HU9503110D0 (en) 1995-12-28
FI955535A (fi) 1996-05-18
NO305577B1 (no) 1999-06-21
ES2087842T1 (es) 1996-08-01
US5617801A (en) 1997-04-08
CZ290036B6 (cs) 2002-05-15

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