EP0981021A1 - Grille pour incinérateurs - Google Patents

Grille pour incinérateurs Download PDF

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Publication number
EP0981021A1
EP0981021A1 EP98810804A EP98810804A EP0981021A1 EP 0981021 A1 EP0981021 A1 EP 0981021A1 EP 98810804 A EP98810804 A EP 98810804A EP 98810804 A EP98810804 A EP 98810804A EP 0981021 A1 EP0981021 A1 EP 0981021A1
Authority
EP
European Patent Office
Prior art keywords
grate
units
movable
lining
covering
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Withdrawn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
EP98810804A
Other languages
German (de)
English (en)
Inventor
Friedrich Freiermuth
Max Künzli
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.)
Alstom SA
Original Assignee
ABB Asea Brown Boveri Ltd
Asea Brown Boveri AB
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 ABB Asea Brown Boveri Ltd, Asea Brown Boveri AB filed Critical ABB Asea Brown Boveri Ltd
Priority to EP98810804A priority Critical patent/EP0981021A1/fr
Priority to TW088113384A priority patent/TW409173B/zh
Priority to US09/372,829 priority patent/US6332410B1/en
Priority to NO993958A priority patent/NO993958L/no
Priority to JP11231639A priority patent/JP2000065332A/ja
Priority to KR1019990034159A priority patent/KR20000017377A/ko
Publication of EP0981021A1 publication Critical patent/EP0981021A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • 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

Definitions

  • the invention relates to a grate for combustion plants for the combustion of Brenngut, in particular garbage, consisting of at least one grate track, which itself from fixed and alternately arranged in the flow direction of the firing material movable, having a number of adjacent grate covering units Grate covering rows composed, the rust covering units in the area of their rear end with fixed or movable grate lining beams are connected and with their front end on or above the following Move the grate covering unit and the movable grate covering units a drive assigned .
  • Firing grates are used to burn and at the same time carry on Brenngut.
  • the movement of the movable rows of grate essentially takes place by combining several rows of grate covering units and operated by a single drive. Each row individually it would be too expensive to move (K. J. Thomé-Kozmiensky: Thermal waste treatment. EF-Verlag für Energy- undmaschinetechnik GmbH, 2nd edition, 1994, pp. 156-159).
  • the movable elements of the grate covering drives arranged in the area of the downwind. All of this means that the movement possibilities of the grate covering units are severely limited and therefore not an ideal adaptation to the combustion behavior of the material to be burned can be achieved. Due to the drive-related combination of several moving rows of grate layers, the grate cannot be cut into a sufficient number of Air zones (underwind zones, i.e. chambers, arranged under the grate and through which a part of the combustion air and air-cooled grates the cooling air is fed to the grate lining units) to be optimally divided react to the various firing conditions on the grate.
  • Underwind zones i.e. chambers, arranged under the grate and through which a part of the combustion air and air-cooled grates the cooling air is fed to the grate lining units
  • Water-cooled grate systems (EP 0 757 206 A1, EP 0 844 438) are used to burn garbage with a high calorific value, so that the service life of the grate covering units does not decrease due to the high thermal load.
  • the attachment of the supply and discharge hoses for the liquid cooling medium cause very limited space. Since the hoses make up to 5 x 10 5 movements per year, leaks often occur. In addition, liquid metals damage the supply and discharge hoses of the cooling medium, and this leads to structures that, together with the aggressive atmosphere, reduce the availability of the system. If a waste incineration plant is not shut down due to cost reasons in the case of a cooling hose leakage, an acute risk to persons when removing the leak is accepted.
  • the invention tries to avoid these disadvantages. It is based on the task a grate for incinerators, especially for the combustion of Design garbage so that the drive of the grate covering units compared to the known prior art is simplified, the system availability is always ensured is and an ideal adaptation of the movement of the movable grate rows to the burning behavior of the respective firing material is achieved.
  • the advantages of the invention are that the drive of the movable Rows of rubbers are significantly simplified. Each row can be driven individually or several rows of grate coverings can be connected in terms of drive become. It is important that the drive is outside the underwind zone takes place and therefore no restrictions with regard to the mobility of the grate rows have to be accepted.
  • a cooling medium preferably liquid cooling medium.
  • the grate covering units by means of metal pipes or Hoses essentially fixedly connected to the distributor and the drain collector and the pipes or hoses at the rear end of the grate lining units are attached.
  • this can result in wear the front grate covering unit support (chafing point), on the other hand leaks are prevented by the absence of hanging hoses and thus the availability of the system is increased again.
  • the grate can thus in one enough large number of air zones to be divided so that one is optimal can react to the various firing conditions on the grate.
  • two embodiments of the invention are based on one water-cooled and an air-cooled grate for a waste incineration plant shown.
  • Fig. 1 shows a partial longitudinal section of a water-cooled according to the invention Grate for incineration plants for burning combustible material 1, in particular Rubbish.
  • the part of a grate track is shown, which is in the flow direction of the Firing material 1 (indicated by the arrow) alternately arranged in a fixed position Grate cover rows 2 and 3 movable grate cover rows.
  • the grate rows 2, 3 are each coupled from a number of adjacent one another Rust covering units 4, 5 assembled.
  • the grate covering units 4, 5 can e.g. B. so-called grate bars that are relatively narrow, but can also be so-called rust plates, of which, for example, only 3 pieces per Grate lining row are arranged side by side.
  • the grate plate over the entire width of the grate track or grate.
  • the grate covering units 4 are fixed in the area of their rear end Rust covering carriers 6 and the rust covering units 5 with movable rust covering carriers 7 connected.
  • the grate covering units 5 move with their front end on or above the subsequent fixed grate unit 4.
  • Under the Grate covering units 4, 5 are formed under wind zones 8 through which a part of the Combustion air, the so-called primary air, flows. The primary air then flows through openings in or between the grate covering units 4, 5 in the Combustion chamber above the grate.
  • the movable rows of grate 3 or movable grate supports 7 is in each case a drive 9 is assigned, which comes from outside the underwind zone 8 placed hydraulic cylinder 10, which is connected to a torsion shaft 11 is.
  • a drive 9 is assigned, which comes from outside the underwind zone 8 placed hydraulic cylinder 10, which is connected to a torsion shaft 11 is.
  • a torsion lever 12 On the torsion shaft 11, a torsion lever 12 is attached, which on his other, the upper end is firmly connected to the movable grate covering carrier 7 is.
  • the movable grate covering carrier 7 thus has a common pivot point with the associated torsion shaft 11.
  • the grate covering units 4, 5 are in the form of a circular segment trained that the non-linear movement resulting from the drive mechanism is compensated.
  • the torsion shaft 11 forms the torsion lever 12 and the grate covering carrier 7 of the movable grate covering units 5 and the rust lining carrier 6 of the stationary rust lining units 4 the support structure for the supply and discharge of the liquid cooling medium (water), which the Grate coating units 4, 5 flow through and cools and thus extend the life.
  • the grate covering units 4, 5 are made with the help of metal pipes or hoses 13 essentially fixedly connected to the inlet distributor 14 and the outlet distributor 15, the metal tubes 13 at the rear end of the grate covering units 4, 5 are arranged. This will cause wear and tear at the end of the grate lining units 4, 5 compensated. By eliminating the hanging hoses (previous State of the art) leaks are largely prevented and thus plant availability increases.
  • Fig. 2 shows a further embodiment of the invention.
  • the first embodiment is not a water-cooled grate, but an air-cooled one Grate for burning fuel 1, preferably garbage, shown.
  • the movable grate lining carrier 7 are in turn fixed via a torsion lever 12 with the torsion shaft 11, which in turn is coupled to a drive 9, the each row of grate cover 3 drives individually, connected and thus have a common Pivot point with the associated torsion shaft 11.
  • the first Embodiments are alternately fixed in the direction of flow of the garbage 1 and movable rows of grate 2, 3 arranged, which lie side by side Rust covering units 4, 5 exist.
  • Both the fixed grating units 4, as well as the movable grate covering units 5 are of circular segment shape. The nonlinear movement of the movable grate covering units 5 is due to this special shape of the grate covering units compensated.
  • the air from the underwind zones 8 is initially used to cool the grate covering units 4, 5 used, for example, through channels in the grate units 4, 5 flows and then introduced into the combustion chamber via nozzles 16 where it serves as the primary combustion air.
  • the nozzles are in the present Embodiment arranged at the front end of the grate covering units 4, 5.
  • the grate 2 serve the torsion shaft 11, the torsion lever 12 and the grate lining carrier 7 not as a support structure for the and discharge of the cooling medium, and it is at the rear end of the grate lining units also no pipes or hoses attached.
  • the grate Through the outside the underwind zone 8 attached individual drive 9 and the special shape of the Grate covering units 4, 5, it is also possible here, the grate in a sufficient divide high number of autogenous air zones and the combustion of the Optimize garbage 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Incineration Of Waste (AREA)
EP98810804A 1998-08-19 1998-08-19 Grille pour incinérateurs Withdrawn EP0981021A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP98810804A EP0981021A1 (fr) 1998-08-19 1998-08-19 Grille pour incinérateurs
TW088113384A TW409173B (en) 1998-08-19 1999-08-05 Grate for incineration plants
US09/372,829 US6332410B1 (en) 1998-08-19 1999-08-12 Grate for incineration plants
NO993958A NO993958L (no) 1998-08-19 1999-08-17 Rist for forbrenningsanlegg
JP11231639A JP2000065332A (ja) 1998-08-19 1999-08-18 焼却設備用の火格子
KR1019990034159A KR20000017377A (ko) 1998-08-19 1999-08-18 소각 설비용 화격자

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98810804A EP0981021A1 (fr) 1998-08-19 1998-08-19 Grille pour incinérateurs

Publications (1)

Publication Number Publication Date
EP0981021A1 true EP0981021A1 (fr) 2000-02-23

Family

ID=8236262

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98810804A Withdrawn EP0981021A1 (fr) 1998-08-19 1998-08-19 Grille pour incinérateurs

Country Status (6)

Country Link
US (1) US6332410B1 (fr)
EP (1) EP0981021A1 (fr)
JP (1) JP2000065332A (fr)
KR (1) KR20000017377A (fr)
NO (1) NO993958L (fr)
TW (1) TW409173B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100522354B1 (ko) * 2002-09-12 2005-10-19 주식회사 대경에스코 고효율 복합식 연소 스토커장치
DE102007033825B4 (de) * 2007-07-18 2021-05-20 Nippon Steel & Sumikin Engineering Co., Ltd. Walzenrost mit Hydraulikantrieb und ein Verfahren zum Betreiben des Walzenrostes
WO2011079447A1 (fr) * 2009-12-30 2011-07-07 深圳市能源环保有限公司 Mécanisme à balancier pour incinérateur de déchets, et incinérateur de déchets associé
US9534510B2 (en) * 2011-03-07 2017-01-03 Dynamis Energy, Llc System and method for thermal chemical conversion of waste
DE102019128536B4 (de) * 2019-10-22 2021-09-23 Nippon Steel Engineering Co., Ltd. Schubrost für einen Verbrennungsofen
DE102022107219A1 (de) 2022-03-28 2023-09-28 Hitachi Zosen Inova Steinmüller GmbH Verfahren zum Betreiben eines Schubrosts und Schubrost

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE343719C (de) * 1918-11-24 1921-11-07 Franz Kroepelin Stufenrost
DE462953C (de) * 1926-12-15 1928-07-19 Josef Martin Unterwindfeuerung mit bewegten Schuerstufen
GB376389A (en) * 1931-04-17 1932-07-14 Alfred Edward Parker Improvements in or relating to mechanical stokers
DE2547155A1 (de) 1975-03-17 1976-09-23 Von Roll Ag Vorschubrost fuer verbrennungsoefen
CH637198A5 (de) 1979-03-14 1983-07-15 Widmer & Ernst Ag Feuerungsrost fuer verbrennungsoefen.
WO1996029544A1 (fr) * 1995-03-23 1996-09-26 Theodor Koch Grille de combustion et procede d'optimisation du fonctionnement d'une grille de combustion
EP0757206A2 (fr) 1995-08-02 1997-02-05 Asea Brown Boveri Ag Grille pour un foyer
EP0844438A2 (fr) 1996-11-21 1998-05-27 Asea Brown Boveri AG Grille pour un foyer

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US831177A (en) * 1905-08-04 1906-09-18 Mcclave Brooks Co Stoking-grate mechanism.
DE1301420B (de) * 1966-03-16 1969-08-21 Haniel & Lueg Gmbh Verbrennungsrost, insbesondere fuer Muellverbrennungsanlagen
US3460491A (en) * 1967-01-03 1969-08-12 Outokumpu Oy Grate in a fluidized bed furnace
DE3316363A1 (de) * 1983-05-05 1984-11-08 Deutsche Babcock Anlagen Ag, 4200 Oberhausen Walzenrost fuer muellverbrennungsanlagen
FR2614395B1 (fr) * 1987-04-27 1989-07-21 Traitement Indl Residus Urbain Foyer de chaudiere, notamment pour dechets urbains, a grille composee de barreaux alternativement fixes et mobiles a va-et-vient, a souplesse de reglage accrue
DK0498014T3 (da) * 1991-02-07 1994-09-12 Martin Gmbh F Fremgangsmåde til forbrændingslufttilførsel, og fyringsanlæg
ATE165433T1 (de) * 1993-10-21 1998-05-15 Asea Brown Boveri Rost für eine feuerungsanlage
NO312644B1 (no) * 1997-04-23 2002-06-10 Doikos Investments Ltd Vannkjölt trykkforbrenningsrist

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE343719C (de) * 1918-11-24 1921-11-07 Franz Kroepelin Stufenrost
DE462953C (de) * 1926-12-15 1928-07-19 Josef Martin Unterwindfeuerung mit bewegten Schuerstufen
GB376389A (en) * 1931-04-17 1932-07-14 Alfred Edward Parker Improvements in or relating to mechanical stokers
DE2547155A1 (de) 1975-03-17 1976-09-23 Von Roll Ag Vorschubrost fuer verbrennungsoefen
CH637198A5 (de) 1979-03-14 1983-07-15 Widmer & Ernst Ag Feuerungsrost fuer verbrennungsoefen.
WO1996029544A1 (fr) * 1995-03-23 1996-09-26 Theodor Koch Grille de combustion et procede d'optimisation du fonctionnement d'une grille de combustion
EP0757206A2 (fr) 1995-08-02 1997-02-05 Asea Brown Boveri Ag Grille pour un foyer
EP0844438A2 (fr) 1996-11-21 1998-05-27 Asea Brown Boveri AG Grille pour un foyer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"THERMISCHE ABFALLBEHANDLUNG", EF-VERLAG FOR ENERGIE UND UMWELTTECHNIK, vol. 2, pages 156-159

Also Published As

Publication number Publication date
US6332410B1 (en) 2001-12-25
KR20000017377A (ko) 2000-03-25
NO993958L (no) 2000-02-21
TW409173B (en) 2000-10-21
JP2000065332A (ja) 2000-03-03
NO993958D0 (no) 1999-08-17

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