EP0815396B1 - Grille de combustion et procede d'optimisation du fonctionnement d'une grille de combustion - Google Patents
Grille de combustion et procede d'optimisation du fonctionnement d'une grille de combustion Download PDFInfo
- Publication number
- EP0815396B1 EP0815396B1 EP96905649A EP96905649A EP0815396B1 EP 0815396 B1 EP0815396 B1 EP 0815396B1 EP 96905649 A EP96905649 A EP 96905649A EP 96905649 A EP96905649 A EP 96905649A EP 0815396 B1 EP0815396 B1 EP 0815396B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grate
- combustion
- cooling
- combustion grate
- control circuit
- 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
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
- F23H17/00—Details of grates
- F23H17/12—Fire-bars
-
- 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 combustion grate according to the preamble of claim 1.
- Rust coating cooling systems are also known, such as the Cooling of the grate by the air flowing past in the air funnels Combustion air or the forced cooling of the Rust deposits from the combustion air, which is caused by a Space made up of the grate bar and a baffle, is pressed into the firebox.
- Water cooling of the grate is also known the amount of water intended for cooling the grate covers the grate at an approximately constant temperature, independently on the calorific value of the fuel. Again, this is a Disadvantage when burning fuels with lower Calorific value because heat is extracted from the combustion chamber. In this The case would be a higher casting surface temperature for the combustion advantageous.
- the object of the present invention is now one to further improve such rust and in particular a to ensure reliable tempering to the Optimize combustion of the fuel.
- FIGS. 1 to 7 The invention is shown in FIGS. 1 to 7 on an air / water cooled combustion grate, which explains how it works is designed as a moving grate. It can be done the invention but without problems on other grate designs apply, such as pyrolysis grate, degassing grate, gasification grate, Incineration grate, high temperature incineration grate, cooling grate, Transport grate, counter-running grate, counter-moving grate, back-moving grate, Roller grate u. the like
- the feed grate 1 shown schematically in FIG. 1 serves to the fuel and that from combustion To transport slag through the firebox and at the same time to function as a combustion air distribution device.
- the grate consists of several zones that are horizontal or inclined are arranged.
- the individual zones can be on the lie on the same level or be separated by a fall.
- Each individual grate zone consists of fixed and movable Grate levels with fixed grate bars 3 and movable grate bars 2.
- the movable stages are with variable number of strokes pushed back and forth, which transports the fuel and is turned. The number of strokes is from the fuel and depending on the combustion process.
- the combustion takes place in the fuel layer through which the combustion air, So-called underwind, from below through gaps in the rust covering 22 (Fig. 2) is blown into the combustion chamber.
- the gap between the individual grate bars 2 or 3 must be so small that as little unburned as possible Small parts can fall through. These are columns all evenly distributed over the entire grate surface.
- the stroke length and the stroke speed of the movable grate covering 22 of the individual rust zones 20 is dependent on the Heat release set on grate 1 or in the combustion chamber.
- the coolant for the feed grate 1 is via distributor 5 fed and after flowing through the grate bars 2 or 3 collected in collectors 6 and returned.
- a coolant not only water can be provided, but in particular also liquids with higher boiling points, for example certain oils. But it is also possible with help the control system shown in Fig. 1 the liquid heat up and thus when the feed grate flows through 1 if necessary, give off heat to the grate.
- this water or the liquid flowing through the grate in can be cooled or heated in a heat exchanger.
- Another heat exchanger in the water network is used for heating or cooling the underwind.
- a temperature sensor or a temperature measuring point can be a desired one Temperature in the firebox, especially the temperature of the downwind after leaving the grate 1.
- appropriate regulation of the flowing through the grate Liquids can raise the temperature of the downwind or be reduced, depending on the control program envisaged, to adapt this in particular to the specific type of fuel is.
- the coolant flow is indicated by corresponding arrows.
- FIG. 2 shows the feed grate 1, which has three grate zones 20 having.
- the grate bars 2 and 3 are on grate slides 21 stored and have a grate facing the firebox 22 on.
- On the underside of the feed grate 1 are air funnels 23 provided which air zones 24 define.
- FIG. 3 shows an enlarged side view a grate with fixed grate levels 27 and movable grate levels 28.
- a grate serves a grate 30 and for the supply of the Coolant in the movable grate 28 a feed line 31.
- FIG. 3 also shows a feed water cylinder 33, which the displacements of the movable grate steps 28th Takes into account.
- FIG. 5 and 6 show details in perspective an air / water cooled grate bar in simple Execution. It can be a movable grate bar 2 or a fixed grate bar 3 act.
- This grate bar with the grating 22 has a partition 40 in its interior so that a first cooling chamber 41 and a second cooling chamber 42 lying parallel thereto is created.
- a water flow opening at the front end of the grate bar 2 or 3 43 This establishes the connection between the two cooling chambers 41 and 42 ago.
- the partition 40 corrugated baffle 45 which is the heat exchange elevated.
- the grate bars 2, 3 can be pivoted on a grate shaft 46 stored. Immediately below the grate shaft 46 a distributor 48 supporting the grate shaft 46 and under this a collector 47, which in connection with the cooling water supply 50 and the hot water return line 51 den Ensure the coolant flows through the grate rod.
- Fig. 7 shows a turning grate bar 60, which on a grate bar support 61 is pivotally mounted. Below this grate bar support 61 is also a supporting coolant distributor 62, combined with a collector 63.
- One cooling chamber 65 has a corrugated baffle 66 equipped. In this case, one is made of a metal hose existing connecting line 68 is provided, which Thermal stress-free connections for the flow medium ensures.
- a bearing shell 70 is also provided at its front end, so that, according to any uneven wear of the grate 22, the turning grate bar 60 rotated and the front bearing shell 70 are placed on the grate bar support 61 can.
- Corresponding connection and connection points are at the front end of the turning grate bar 60, as can be seen, intended.
- Another special feature of the invention is that Incineration of low calorific value from the liquid cycle heat removed from the grate bar by means of heat exchange between grate bar and combustion air, which very intense due to the geometric shape of the grate bar is released into the combustion air and thus the combustion of the rubbish lying on the grate is accelerated.
- the cooling creates advantages in the Incineration of waste with high, but also with low calorific value, since the heat extracted is used by the combustion air can be fed again.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Incineration Of Waste (AREA)
- Solid-Fuel Combustion (AREA)
- Gasification And Melting Of Waste (AREA)
- Control Of Combustion (AREA)
Claims (7)
- Grille de combustion qui est refroidie entièrement ou partiellement aussi bien par un gaz que par un liquide, au moyen d'un circuit de régulation, comprenant des barreaux de grille (2, 3) qui présentent des conduites (50, 51) respectivement pour l'amenée et l'évacuation d'un fluide de refroidissement, caractérisée en ce que les conduites (50, 51) sont équipées de moyens (52) de compensation de la dilatation thermique formés d'enroulements en forme de ressorts hélicoïdaux.
- Grille de combustion selon la revendication 1, caractérisée en ce que les barreaux de grille (2, 3) présentent des échangeurs ondulés (45).
- Grille de combustion selon la revendication 1 ou 2, caractérisée en ce que les barreaux de grille (2, 3) sont constitués par des barreaux réversibles (60).
- Grille de combustion selon l'une des revendications 1 à 3, caractérisée en ce que le circuit de régulation est un circuit fermé.
- Grille de combustion selon l'une des revendications 1 à 4, caractérisée en ce que la grandeur réglante du circuit de régulation est la quantité d'eau de refroidissement qui passe par unité de temps et/ou la température de l'eau de refroidissement.
- Grille de combustion selon l'une des revendications 1 à 5, caractérisée en ce que le circuit de régulation présente au moins un échangeur de chaleur pour le liquide de refroidissement et de préférence un pour l'air comburant.
- Grille de combustion selon l'une des revendications 1 à 6, caractérisée en ce qu'un bipasse est prévu dans le circuit de régulation.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH83095 | 1995-03-23 | ||
CH830/95 | 1995-03-23 | ||
CH83095 | 1995-03-23 | ||
PCT/CH1996/000092 WO1996029544A1 (fr) | 1995-03-23 | 1996-03-12 | Grille de combustion et procede d'optimisation du fonctionnement d'une grille de combustion |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0815396A1 EP0815396A1 (fr) | 1998-01-07 |
EP0815396B1 true EP0815396B1 (fr) | 1999-09-15 |
Family
ID=4196193
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96905649A Expired - Lifetime EP0815396B1 (fr) | 1995-03-23 | 1996-03-12 | Grille de combustion et procede d'optimisation du fonctionnement d'une grille de combustion |
Country Status (10)
Country | Link |
---|---|
US (1) | US6422161B2 (fr) |
EP (1) | EP0815396B1 (fr) |
JP (1) | JPH11504700A (fr) |
KR (1) | KR19980702915A (fr) |
AT (1) | ATE184694T1 (fr) |
DE (1) | DE59603074D1 (fr) |
DK (1) | DK0815396T3 (fr) |
ES (1) | ES2137671T3 (fr) |
GR (1) | GR3031826T3 (fr) |
WO (1) | WO1996029544A1 (fr) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19650742C1 (de) * | 1996-12-06 | 1998-02-19 | Metallgesellschaft Ag | Mit Wasser gekühlter Verbrennungsrost |
DE19749227C2 (de) * | 1997-11-07 | 1999-12-02 | Krc Umwelttechnik Gmbh | Wassergekühlter Feuerungsrost |
EP0924464A1 (fr) * | 1997-12-19 | 1999-06-23 | KOCH, Theodor | Grille d'une installation de combustion et méthode pour son refroidissement |
SE512432C2 (sv) * | 1998-05-29 | 2000-03-13 | Fls Miljoe As | Vattenkyld rost för förbränningsugn |
EP0981021A1 (fr) | 1998-08-19 | 2000-02-23 | Asea Brown Boveri AG | Grille pour incinérateurs |
DE59800483D1 (de) † | 1998-09-24 | 2001-03-29 | Von Roll Umwelttechnik Ag | Rostblock |
DE19929614C2 (de) | 1999-06-28 | 2001-04-26 | Martin Umwelt & Energietech | Feuerungsanlage mit flüssigkeitsgekühlten Rostelementen |
DE19943665B4 (de) * | 1999-09-13 | 2006-04-13 | Martin GmbH für Umwelt- und Energietechnik | Verfahren zur Kühlung eines Rostes für einen Feuerraum mittels Wasser sowie Rost zur Verbrennung von Feststoffen |
WO2002021049A1 (fr) | 2000-09-04 | 2002-03-14 | Theodor Koch | Barreau de grille a refroidissement par du liquide pour des incinerateurs |
KR20050013147A (ko) * | 2002-06-24 | 2005-02-02 | 존 엔. 시니어 베이직 | 온도조절 소각로 건조격자 |
CH697973B1 (de) * | 2005-06-10 | 2009-04-15 | Alstom Technology Ltd | Rostwalze. |
DE202005011215U1 (de) * | 2005-07-16 | 2005-09-29 | Lls Standardkessel Service Gmbh | Vorschubrost für Feuerungsanlagen |
DE502006002556D1 (de) | 2005-09-06 | 2009-02-26 | Ernst Schenkel | Wassergekühltes Rostelement |
JP2008215739A (ja) * | 2007-03-06 | 2008-09-18 | Schenkel Ernst | 水冷式火格子要素 |
EP1975507A1 (fr) * | 2007-03-29 | 2008-10-01 | ThyssenKrupp Xervon Energy GmbH | Grille d'avance pour foyers de combustion |
DE102009042722A1 (de) * | 2009-09-23 | 2011-03-24 | Thyssenkrupp Xervon Energy Gmbh | Roststab |
EP2487414B1 (fr) * | 2011-02-04 | 2016-11-02 | Seko-Patent GmbH | Barreau de grille |
US20120247375A1 (en) * | 2011-03-31 | 2012-10-04 | Bender Robert J | Grate clearing and ash removal system for gasification furnace |
KR101373647B1 (ko) * | 2013-05-27 | 2014-03-12 | 에스엠메탈(주) | 수냉식 화격자 냉각장치 |
DE202017006429U1 (de) * | 2017-12-14 | 2019-03-15 | Wvt Breiding Gmbh | Vorschubrost-Roststein mit konturierter Lauffläche, Roststein-Anordnung und Vorschubrost |
EP4027091A1 (fr) | 2021-01-08 | 2022-07-13 | Babcock & Wilcox Vølund A/S | Élément de grille à plaques pour une grille mobile d'un four |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR739654A (fr) | 1900-01-01 | |||
US498686A (en) * | 1893-05-30 | Charles nye | ||
US1354531A (en) * | 1919-12-01 | 1920-10-05 | Ralph W Anthony | Gas-grate |
US1775790A (en) * | 1927-05-25 | 1930-09-16 | Tawlks Grate Bar Company | Grate bar |
US1913573A (en) * | 1932-01-11 | 1933-06-13 | John B Turner | Radiator |
DE808263C (de) | 1948-10-02 | 1951-07-12 | Steinmueller Gmbh L & C | Selbstfoerdernder, wassergekuehlter Planrost |
US3247897A (en) * | 1964-02-25 | 1966-04-26 | Babcock & Wilcox Co | Differential expansion compensating apparatus |
GB1328348A (en) * | 1969-11-19 | 1973-08-30 | Fisons Ltd | Heat exchangers |
US4026247A (en) | 1975-12-15 | 1977-05-31 | S. J. Agnew | Fluid cooled dump grate |
US4200047A (en) * | 1977-04-01 | 1980-04-29 | Claudius Peters Ag | Two part grate for stokers with reciprocating grate plates |
JPS55110886A (en) * | 1979-02-19 | 1980-08-26 | Tokico Ltd | Heat transfer device |
FR2463894A1 (fr) * | 1979-08-24 | 1981-02-27 | Cdf Ingenierie | Foyer a inertie pour combustible solide |
JPS6038639B2 (ja) * | 1982-11-24 | 1985-09-02 | 菱日エンジニアリング株式会社 | 管路を具える平板構造 |
CH652476A5 (de) * | 1983-05-20 | 1985-11-15 | Theodor Koch | Roststab. |
JPH02106613A (ja) * | 1988-10-13 | 1990-04-18 | Hitachi Zosen Corp | 焼却炉の火格子構造 |
SU1657867A1 (ru) * | 1989-03-13 | 1991-06-23 | Институт газа АН УССР | Топка с кип щим слоем |
US5086714A (en) * | 1990-04-16 | 1992-02-11 | Hladun Kenneth W | Vibratory hearth |
US5142999A (en) * | 1991-05-17 | 1992-09-01 | Axxon Corporation | Incinerator with fluid-cooled hearth |
US5235921A (en) * | 1991-11-08 | 1993-08-17 | Dunham Environmental Services, Inc. | Combustion system having a movable hearth |
JPH08509541A (ja) | 1993-02-12 | 1996-10-08 | エル ディヴィッド オーストリー | 積重ね冷却格子及び発電所用の火力を供給するための装置 |
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. |
CA2159992A1 (fr) | 1994-02-07 | 1995-08-10 | Andreas Kemter | Procede pour la combustion de matieres solides au moyen d'un dispositif a grilles de combustion mobiles |
CH689519A5 (de) * | 1995-05-17 | 1999-05-31 | Von Roll Umwelttechnik Ag | Gekuehlter Rostblock. |
DE19528310A1 (de) * | 1995-08-02 | 1997-02-06 | Abb Management Ag | Rost für eine Feuerungsanlage |
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 |
-
1996
- 1996-03-12 US US08/913,774 patent/US6422161B2/en not_active Expired - Fee Related
- 1996-03-12 JP JP8527944A patent/JPH11504700A/ja active Pending
- 1996-03-12 KR KR1019970706323A patent/KR19980702915A/ko active IP Right Grant
- 1996-03-12 ES ES96905649T patent/ES2137671T3/es not_active Expired - Lifetime
- 1996-03-12 DE DE59603074T patent/DE59603074D1/de not_active Expired - Lifetime
- 1996-03-12 AT AT96905649T patent/ATE184694T1/de not_active IP Right Cessation
- 1996-03-12 WO PCT/CH1996/000092 patent/WO1996029544A1/fr active IP Right Grant
- 1996-03-12 EP EP96905649A patent/EP0815396B1/fr not_active Expired - Lifetime
- 1996-03-12 DK DK96905649T patent/DK0815396T3/da active
-
1999
- 1999-11-11 GR GR990402916T patent/GR3031826T3/el unknown
Also Published As
Publication number | Publication date |
---|---|
JPH11504700A (ja) | 1999-04-27 |
ATE184694T1 (de) | 1999-10-15 |
KR19980702915A (ko) | 1998-09-05 |
GR3031826T3 (en) | 2000-02-29 |
DK0815396T3 (da) | 2000-04-03 |
US20010003266A1 (en) | 2001-06-14 |
ES2137671T3 (es) | 1999-12-16 |
WO1996029544A1 (fr) | 1996-09-26 |
US6422161B2 (en) | 2002-07-23 |
EP0815396A1 (fr) | 1998-01-07 |
DE59603074D1 (de) | 1999-10-21 |
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