EP1369640A2 - Absperreinrichtung an Kohlenstaubbrennern einer Kohlenstaubfeuerung - Google Patents
Absperreinrichtung an Kohlenstaubbrennern einer Kohlenstaubfeuerung Download PDFInfo
- Publication number
- EP1369640A2 EP1369640A2 EP03011794A EP03011794A EP1369640A2 EP 1369640 A2 EP1369640 A2 EP 1369640A2 EP 03011794 A EP03011794 A EP 03011794A EP 03011794 A EP03011794 A EP 03011794A EP 1369640 A2 EP1369640 A2 EP 1369640A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- shut
- air
- feed line
- lever
- coal
- 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.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
- F23K3/02—Pneumatic feeding arrangements, i.e. by air blast
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L13/00—Construction of valves or dampers for controlling air supply or draught
- F23L13/10—Construction of valves or dampers for controlling air supply or draught having a compound movement involving both sliding and pivoting
Definitions
- the invention relates to a shut-off device Coal dust burners of a coal dust combustion with the characteristics the preamble of claim 1.
- the invention has for its object a closed System for cooling the coal dust supply path within of a coal dust burner without creating an air stream that the necessary safety device, namely the Blocking the coal dust supply route is impaired.
- the coal dust combustion system shown consists of two three coal dust burners 1, 2, which are connected in parallel and supplied with coal dust via two fuel supplies 3, 4 become.
- Fuel supplies 3, 4 and coal dust burners 1, 2 be provided.
- the fuel supply 3, 4 can be from a Mill system and / or an intermediate bunker exist.
- the coal dust burners 1, 2 are circular burners with stepped Combustion air duct trained and each contain central core air tube 5, which from a primary tube 6, a Secondary air tube 7 and a tertiary air tube 8 concentric is surrounded. the central core air tube can also be omitted.
- the each at the front end of the coal dust burner 1, 2 trained burner nozzle opens into a not shown Combustion chamber of a steam generator plant.
- the core air tube 5, the Secondary air tube 7 and the tertiary air tube 8 are over Air supply lines 9 and combustion air lines 10 to one central combustion air supply 11 connected.
- the Core air tube 5, secondary air tube 7 and tertiary air tube 8 are from the combustion air supply 11 via the Air supply lines 9 and the combustion air lines 10 with Combustion air supplied before entering the Coal dust burner 1, 2 as core air, secondary air and as Tertiary air is divided.
- flow meters 12 are arranged, and in the air supply lines 9 control or butterfly valves 13 are arranged.
- Throttle valves 14 may be arranged, which serve the air-carrying pipes matched to each other Supply combustion air quantities. Is a single one Coal dust burner 1, 2 taken out of service, is by the pipes 5, 7, 8 carrying the combustion air flows mentioned an air stream of small size led as a cooling air stream.
- the primary tube 6 of each of the coal dust burners 1, 2 is connected to one Feed line 15 connected to one of the Fuel supplies 3, 4 is connected.
- the Fuel supplies 3, 4 are each with a Primary air line 16 connected in which a flow meter 12th is arranged.
- the supplied to the fuel supply 3, 4 Primary air conveys the coal dust as a coal dust-air mixture to the primary tubes 6 of the coal dust burners 1, 2.
- each feed line 15 Before entering the respective coal dust burner 1, 2 is in each feed line 15 as a gate valve 17th trained shut-off device arranged transversely to the Axis of the direction of flow of the coal dust-air mixture is aligned.
- the gate valve 17 consists of a Slider plate 18 on which a push rod 19 is attached (Fig. 2).
- the Slider plate 18 shows the cross section of the feed line 15 completely as shown in Fig. 5.
- the shut-off device is equipped with a cooling device for cooling the parts of the respective coal dust burners 1, 2 combined, the lead the coal dust-air mixture. Serves as a cooling medium preferably a partial flow of the combustion air.
- a cooling air line 21 in which a shut-off device 22 is arranged (FIG. 1).
- the Cooling air lines 21 are preferably to the Combustion air lines 10 connected.
- the Gate valve 17 can instead of the hot combustion air from the combustion air supply also others in the Coal dust combustion system available air, e.g. B. that of the mill supplied cold air or flue gas can be used.
- the cooling device consists of each of the respective Coal dust burner 1, 2 from an air box 23, the downstream of the gate valve 17 on the side of the Coal dust-air mixture flowing through supply line 15 attached and tightly connected to it.
- the air box 23 Preferably encloses the air box 23 downstream of the Gate valve 17 the supply line 15 on all sides and tight.
- the air box 23 is provided with an inlet connection 24 which is each connected to one of the cooling air lines 21.
- 3 to 5 is in the area of the air box 23 in the wall the feed line 15 is provided an opening 25 through a closing plate 26 from the inside of the air box 23 is lockable.
- a first lever 27 is articulated.
- the first lever 27 is like a second lever 28 and third lever 29 rotatably with one in a swivel mounted shaft 30 connected.
- the shaft 30 is rotatable in the Air box 23 mounted and protrudes sealed on both sides of the Air box 23 out.
- the levers 28, 29 are outside the Air box 23 each with one of the protruding ends of the Shaft 30 non-rotatably connected.
- To the free end of the second Lever 28 engages a spring 31 under tension, which is attached to the outside of the air box 23.
- the free end of the third lever 29 is connected to an articulated rod 32 which hinges to a fourth lever 33 which rotates with the shaft of a pinion 34 is connected.
- the pinion 34 is in Active connection with a rack 35 on the rear End of the slide plate 18 of the gate valve 17 attached is.
- the combined shut-off and cooling device works in the way described below.
- the locking plate 26 is over the first Lever 27 and the second lever 28 fixedly connected to it the laterally arranged spring 31 firmly on the opening 25 in the feed line 15 pressed.
- the air box 23, the Feed line 15 encloses in this area is with air filled so that the supply line 15 sets an even temperature. This is a Warping the feed line 15 and the closing plate 26 excluded due to unequal thermal stress.
- the static pressure of the cooling air in the air box 23 is always higher than the static pressure of the coal dust-air mixture in the supply line 15. This is a possible leak only in the direction of the flow path of the coal dust-air mixture possible, so that coal dust escapes into the Air box 23 can not be done.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Solid-Fuel Combustion (AREA)
- Sliding Valves (AREA)
- Air Supply (AREA)
Abstract
Description
- Fig. 1
- das Schema einer Kohlenstaubfeuerungsanlage,
- Fig. 2
- einen Kohlenstaubbrenner der Kohlenstaubfeuerungsanlage nach Fig. 1,
- Fig. 3
- bis 5 eine Absperreinrichtung für einen Kohlenstaubbrenner nach Fig. 2 in verschiedenen Betriebsstellungen.
Claims (6)
- Absperreinrichtung an Kohlenstaubbrennern (1, 2) einer Kohlenstaubfeuerung, wobei jeder Kohlenstaubbrenner (1, 2) ein Kohlenstaub-Luft-Gemisch führendes Primärrohr (6) aufweist, das mit einer Zuführungsleitung (15) zur Zuführung des Kohlenstaub-Luft-Gemisches zu den jeweiligen Kohlenstaubbrennern (1, 2) verbunden ist und wobei in der Zuführungsleitung (15) ein mit einer Schieberplatte (18) versehener Absperrschieber (17) zum Verschließen der Zuführungsleitung (15) angeordnet ist, dadurch gekennzeichnet, dass die Zuführungsleitung (15) auf der Abströmseite des Absperrschiebers (17) mit einem mit Luft beaufschlagten Luftkasten (23) dicht verbunden ist, dass im Bereich des Luftkastens (23) in der Wand der Zuführungsleitung (15) eine durch eine Schließplatte (26) verschließbare Öffnung (25) angebracht ist und dass die Schließplatte (26) synchron mit dem Absperrschieber (17) so betätigbar angeordnet ist, dass die Öffnung (25) in der Schließstellung des Absperrschiebers (17) freigegeben und in Offenstellung des Absperrschiebers (17) verschlossen ist.
- Absperreinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Luftkasten (23) die Zuführungsleitung (15) auf der Abströmseite des Absperrschiebers (17) allseitig dicht umschließt.
- Absperreinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der statische Druck der Luft in dem Luftkasten (23) auf einen höheren Wert gehalten ist als der Druck des Kohlenstaub-Luft-Gemisches in der Zuführungsleitung (15).
- Absperreinrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Schließplatte (26) mit einem aus mehreren Hebeln (27, 28, 29, 33) und einer Gelenkstange (32) bestehenden Gestänge versehen ist, an das eine die Schließplatte (26) in Schließstellung haltende, auf Zug beanspruchte Feder (31) angreift und das mit der Schieberplatte (18) des Absperrschiebers (17) mechanisch gekoppelt ist.
- Absperreinrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass auf der Schieberplatte (18) des Absperrschiebers (17) eine Zahnstange (35) angebracht ist, dass die Zahnstange (35) am Ende des Schließweges des Absperrschiebers (17) mit einem ortsfest gelagerten Ritzel (34) in Eingriff zu bringen ist, das über einen drehfest mit dem Ritzel (34) verbundenen Hebel (33) mit dem Gestänge verbunden ist.
- Absperreinrichtung nach den Ansprüchen 3 und 4, dadurch gekennzeichnet, dass auf der Rückseite der Schließplatte (26) ein erster Hebel (27) gelenkig angebracht ist, der mit einer in dem Luftkasten (23) gelagerten Welle (30) drehfest verbunden ist, dass die Welle (30) beidseitig abgedichtet aus dem Luftkasten herausragt, dass außerhalb des Luftkastens (23) ein zweiter und ein dritter Hebel (28, 29) mit der Welle (30) verbunden sind, dass an das freie Ende des zweiten Hebels (28) die Feder (31) angreift und dass das freie Ende des dritten Hebels (29) über eine Gelenkstange (32) mit dem über das Ritzel (34) drehfest verbundenen Hebel (33) gelenkig verbunden ist.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI200331427T SI1369640T1 (sl) | 2002-06-05 | 2003-05-24 | Zaporna naprava na gorilniku za premogov prah kurišča za premogov prah |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10225082A DE10225082B4 (de) | 2002-06-05 | 2002-06-05 | Absperreinrichtung an Kohlenstaubbrennern einer Kohlenstaubfeuerung |
DE10225082 | 2002-06-05 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1369640A2 true EP1369640A2 (de) | 2003-12-10 |
EP1369640A3 EP1369640A3 (de) | 2004-05-19 |
EP1369640B1 EP1369640B1 (de) | 2008-08-13 |
Family
ID=29432668
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03011794A Expired - Lifetime EP1369640B1 (de) | 2002-06-05 | 2003-05-24 | Absperreinrichtung an Kohlenstaubbrennern einer Kohlenstaubfeuerung |
Country Status (14)
Country | Link |
---|---|
US (1) | US6807914B2 (de) |
EP (1) | EP1369640B1 (de) |
JP (1) | JP4279602B2 (de) |
AT (1) | ATE404817T1 (de) |
AU (1) | AU2003204529B2 (de) |
CA (1) | CA2429325A1 (de) |
DE (2) | DE10225082B4 (de) |
DK (1) | DK1369640T3 (de) |
ES (1) | ES2311657T3 (de) |
HR (1) | HRP20030457A2 (de) |
PL (1) | PL199357B1 (de) |
PT (1) | PT1369640E (de) |
SI (1) | SI1369640T1 (de) |
UA (1) | UA79738C2 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008049496A1 (de) * | 2006-10-25 | 2008-05-02 | Eisenmann Anlagenbau Gmbh & Co. Kg | Absperrklappe insbesondere zur verwendung in einer vorrichtung zur abgasreinigung |
WO2010108986A3 (de) * | 2009-03-25 | 2011-05-19 | Hitachi Power Europe Gmbh | Feuerungssystem eines für den oxyfuel-betrieb ausgelegten dampferzeugers |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7430970B2 (en) * | 2005-06-30 | 2008-10-07 | Larue Albert D | Burner with center air jet |
DE102006022628B4 (de) * | 2006-05-12 | 2010-06-17 | Rwe Power Ag | Verfahren zum Betrieb einer Anordnung von Staubbrennern |
JP4898393B2 (ja) * | 2006-11-09 | 2012-03-14 | 三菱重工業株式会社 | バーナ構造 |
CN101578482B (zh) * | 2007-07-18 | 2011-03-23 | 哈尔滨工业大学 | 一种低氮氧化物旋流煤粉燃烧器 |
US20090084346A1 (en) * | 2007-09-28 | 2009-04-02 | General Electric Company | Gas flow injector and method of injecting gas into a combustion system |
CN101324331B (zh) * | 2008-08-01 | 2012-07-18 | 黄钟成 | 以煤代油的燃烧方法 |
US8689710B2 (en) * | 2008-09-26 | 2014-04-08 | Air Products And Chemicals, Inc. | Combustion system with precombustor |
DE102011018697A1 (de) * | 2011-04-26 | 2012-10-31 | Babcock Borsig Steinmüller Gmbh | Brenner für partikelförmigen Brennstoff |
CN103216829B (zh) * | 2013-05-07 | 2016-01-06 | 国家电网公司 | 节能型等离子煤粉点火燃烧器 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB153746A (en) * | 1919-10-08 | 1920-11-18 | Peter Edwin Van Saun | Improvements in feeding pulverized coal to furnaces |
GB160866A (en) * | 1919-10-08 | 1921-04-07 | Peter Edwin Van Saun | Improvements in feeding pulverized coal and other material to furnaces |
US4448135A (en) * | 1981-11-16 | 1984-05-15 | The Babcock & Wilcox Company | Inline air-coal separator |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
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DE1401932A1 (de) * | 1962-06-09 | 1968-10-24 | Steinmueller Gmbh L & C | Verfahren zum Betrieb von Brennern fuer Kesselfeuerungen |
US3602165A (en) * | 1969-11-10 | 1971-08-31 | American Air Filter Co | Damper assembly |
US4164211A (en) * | 1977-10-03 | 1979-08-14 | American Air Filter Company, Inc. | Damper assembly |
DE3015472C2 (de) * | 1980-04-22 | 1985-08-01 | Luitpold Dipl.-Ing. 8000 München Kutzner | Zugbegrenzer- und Belüftungsanordnung an einer Feuerstätte |
DE3131962C2 (de) * | 1981-08-13 | 1985-07-25 | Steag Ag, 4300 Essen | Leistungsbrenner für staubförmige Brennstoffe |
DD301982A7 (de) * | 1989-08-01 | 1994-10-06 | Enag Energieversorgung Nordthu | Vorrichtung zur Waermeerzeugung aus gasfoermigen, fluessigen und festen Brennstoffen |
US5299932A (en) * | 1992-11-24 | 1994-04-05 | Piver F James | Fuel and air supply control apparatus for gas burners |
SE501015C2 (sv) * | 1993-01-28 | 1994-10-17 | Joergen Hallberg | Brännare för fasta bränslen |
DE19521505B4 (de) * | 1995-06-13 | 2004-07-01 | Babcock Borsig Power Systems Gmbh | Verfahren zum Verbrennen von Kohle mit weniger als 10 % flüchtigen Bestandteilen |
-
2002
- 2002-06-05 DE DE10225082A patent/DE10225082B4/de not_active Expired - Fee Related
-
2003
- 2003-05-21 CA CA002429325A patent/CA2429325A1/en not_active Abandoned
- 2003-05-23 US US10/444,370 patent/US6807914B2/en not_active Expired - Fee Related
- 2003-05-24 PT PT03011794T patent/PT1369640E/pt unknown
- 2003-05-24 AT AT03011794T patent/ATE404817T1/de not_active IP Right Cessation
- 2003-05-24 SI SI200331427T patent/SI1369640T1/sl unknown
- 2003-05-24 ES ES03011794T patent/ES2311657T3/es not_active Expired - Lifetime
- 2003-05-24 DE DE50310302T patent/DE50310302D1/de not_active Expired - Lifetime
- 2003-05-24 EP EP03011794A patent/EP1369640B1/de not_active Expired - Lifetime
- 2003-05-24 DK DK03011794T patent/DK1369640T3/da active
- 2003-05-30 PL PL360426A patent/PL199357B1/pl not_active IP Right Cessation
- 2003-06-03 AU AU2003204529A patent/AU2003204529B2/en not_active Ceased
- 2003-06-04 JP JP2003160034A patent/JP4279602B2/ja not_active Expired - Fee Related
- 2003-06-04 UA UA2003065169A patent/UA79738C2/uk unknown
- 2003-06-05 HR HR20030457A patent/HRP20030457A2/xx not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB153746A (en) * | 1919-10-08 | 1920-11-18 | Peter Edwin Van Saun | Improvements in feeding pulverized coal to furnaces |
GB160866A (en) * | 1919-10-08 | 1921-04-07 | Peter Edwin Van Saun | Improvements in feeding pulverized coal and other material to furnaces |
US4448135A (en) * | 1981-11-16 | 1984-05-15 | The Babcock & Wilcox Company | Inline air-coal separator |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008049496A1 (de) * | 2006-10-25 | 2008-05-02 | Eisenmann Anlagenbau Gmbh & Co. Kg | Absperrklappe insbesondere zur verwendung in einer vorrichtung zur abgasreinigung |
WO2010108986A3 (de) * | 2009-03-25 | 2011-05-19 | Hitachi Power Europe Gmbh | Feuerungssystem eines für den oxyfuel-betrieb ausgelegten dampferzeugers |
Also Published As
Publication number | Publication date |
---|---|
DK1369640T3 (da) | 2008-12-01 |
PL360426A1 (en) | 2003-12-15 |
ES2311657T3 (es) | 2009-02-16 |
JP4279602B2 (ja) | 2009-06-17 |
HRP20030457A2 (en) | 2004-02-29 |
PL199357B1 (pl) | 2008-09-30 |
DE50310302D1 (de) | 2008-09-25 |
DE10225082B4 (de) | 2007-04-26 |
AU2003204529B2 (en) | 2008-05-29 |
ATE404817T1 (de) | 2008-08-15 |
SI1369640T1 (sl) | 2009-02-28 |
UA79738C2 (en) | 2007-07-25 |
US6807914B2 (en) | 2004-10-26 |
PT1369640E (pt) | 2008-11-12 |
EP1369640B1 (de) | 2008-08-13 |
US20030226482A1 (en) | 2003-12-11 |
DE10225082A1 (de) | 2004-01-08 |
AU2003204529A1 (en) | 2004-01-08 |
EP1369640A3 (de) | 2004-05-19 |
CA2429325A1 (en) | 2003-12-05 |
JP2004012124A (ja) | 2004-01-15 |
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