EP1369640B1 - Absperreinrichtung an Kohlenstaubbrennern einer Kohlenstaubfeuerung - Google Patents

Absperreinrichtung an Kohlenstaubbrennern einer Kohlenstaubfeuerung Download PDF

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Publication number
EP1369640B1
EP1369640B1 EP03011794A EP03011794A EP1369640B1 EP 1369640 B1 EP1369640 B1 EP 1369640B1 EP 03011794 A EP03011794 A EP 03011794A EP 03011794 A EP03011794 A EP 03011794A EP 1369640 B1 EP1369640 B1 EP 1369640B1
Authority
EP
European Patent Office
Prior art keywords
shut
air
sliding member
supply line
pulverized 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.)
Expired - Lifetime
Application number
EP03011794A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1369640A3 (de
EP1369640A2 (de
Inventor
Alfons Leisse
Heinz Gräwe
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 Power Europe GmbH
Original Assignee
Hitachi Power Europe 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 Hitachi Power Europe GmbH filed Critical Hitachi Power Europe GmbH
Priority to SI200331427T priority Critical patent/SI1369640T1/sl
Publication of EP1369640A2 publication Critical patent/EP1369640A2/de
Publication of EP1369640A3 publication Critical patent/EP1369640A3/de
Application granted granted Critical
Publication of EP1369640B1 publication Critical patent/EP1369640B1/de
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
    • 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 for pulverized coal burners of a pulverized coal firing with the features of the preamble of claim 1.
  • burners switched off during operation of the steam generator system are supplied with cooling air via the combustion air supply paths (secondary, tertiary air) for protection against thermal overload of the burner nozzles.
  • the primary tubes of the pulverized coal burners, via which the fuel is introduced during operation, are not flowed through by cool air when the burners are out of operation.
  • Such a shut-off device is off GB 153 746 A known.
  • the pulverized coal supply lines shall be provided with shut-off devices must be safely opened during operation of the corresponding supply systems and shut off after switching off the corresponding fuel supply device. This is usually done with shut-off devices in which a shut-off plate is pushed by an automatically actuated drive and / or by hand perpendicular to the flow axis in the cross section of the corresponding supply lines. This will complete the shut off of the corresponding fuel supply paths causes. In this state, there is no flow through the fuel paths and thus no cooling of the burner pulverized coal nozzle.
  • the invention has for its object to provide a closed system for cooling the Kohlenstaubwayssweges within a Kohlenstaubrenners by an air stream, without causing the necessary safety device, namely the shut-off of Kohlenstaubmakerssweges is impaired.
  • the coal pulverization plant shown consists of two times three pulverized coal burners 1, 2, which are connected in parallel and are supplied via two fuel supplies 3, 4 with coal dust.
  • the fuel supply 3, 4 may consist of a mill and / or an intermediate bunker.
  • the pulverized coal burners 1, 2 are designed as round burners with stepped combustion air guidance and each contain a central core air tube 5, which is surrounded concentrically by a primary tube 6, a secondary air tube 7 and a tertiary air tube 8. the central core air tube can also be omitted.
  • Each formed at the front end of the pulverized coal burner 1, 2 burner nozzle opens into a combustion chamber, not shown, a steam generator system.
  • the core air tube 5, the secondary air tube 7 and the tertiary air tube 8 are connected via air supply lines 9 and combustion air ducts 10 to a central combustion air supply 11.
  • the core air tube 5, the secondary air tube 7 and the tertiary air tube 8 are supplied from the combustion air supply 11 via the air supply lines 9 and the combustion air ducts 10 with combustion air before entering the Pulverized coal burner 1, 2 is divided as core air, secondary air and tertiary air.
  • flow meter 12 are arranged, and in the air supply lines 9 control or shut-off valves 13 are arranged.
  • Throttle valves 14 may also be arranged in the inlet region of the core air tube 5, the secondary air tube 7 and the tertiary air tube 8, which serve to supply combustion air quantities coordinated with one another to the air-conveying tubes. If an individual of the pulverized coal burners 1, 2 is taken out of operation, an air flow of small size is conducted as the cooling air flow through the tubes 5, 7, 8 leading to said combustion air streams.
  • the primary pipe 6 of each of the pulverized coal burners 1, 2 is connected to a supply line 15 which is connected to one of the fuel supplies 3, 4.
  • the fuel supplies 3, 4 are each connected to a primary air line 16, in which a flow meter 12 is arranged.
  • the primary air supplied to the fuel supply 3, 4 delivers the pulverized coal as a coal dust-air mixture to the primary pipes 6 of the pulverized coal burners 1, 2.
  • a shut-off valve 17 designed as a shut-off valve 17 is arranged in each supply line 15 and is aligned transversely to the axis of the flow direction of the pulverized coal-air mixture.
  • the gate valve 17 consists of a slide plate 18 to which a push rod 19 is attached ( Fig. 2 ). To the push rod 19 engages a drive motor 20 or a manual adjustment for actuating the slide plate 18 at. In the closed position of the gate valve 17, the slide plate 18 closes the cross section of the supply line 15 completely, as in Fig. 5 shown.
  • the shut-off device is combined with a cooling device for cooling the parts of the respective pulverized coal burners 1, 2, which carry the coal dust-air mixture.
  • a cooling medium is preferably a partial flow of the combustion air.
  • the combined shut-off cooling device of each pulverized coal burner 1, 2 is connected to a cooling air line 21, in which a shut-off device 22 is arranged ( Fig. 1 ).
  • the cooling air ducts 21 are preferably connected to the combustion air ducts 10.
  • the mill supplied cold air or flue gas can be used.
  • the cooling means of each of the respective pulverized coal burners 1, 2 consists of an air box 23 which is mounted downstream of the gate valve 17 downstream of the feed line 15 through which the pulverized coal-air mixture flows and is tightly connected thereto.
  • the air box 23 encloses downstream of the gate valve 17, the supply line 15 on all sides and tight.
  • the air box 23 is provided with an inlet port 24 which is connected to one of the cooling air pipes 21, respectively.
  • Fig. 3 to 5 is in the region of the air box 23 in the wall of the supply line 15, an opening 25 which is closed by a closing plate 26 from the interior of the air box 23 ago.
  • a first lever 27 is pivotally mounted on the closing plate 26.
  • the first lever 27, as well as a second lever 28 and a third lever 29 rotatably connected to a shaft 30 mounted in a rotary joint.
  • the shaft 30 is rotatably mounted in the air box 23 and protrudes sealed on both sides of the Air box 23 out.
  • the levers 28, 29 are rotatably connected outside of the air box 23 each having one of the protruding ends of the shaft 30.
  • a claimed to train spring 31 which is fixed outside of the air box 23.
  • the free end of the third lever 29 is connected to a link rod 32 which hingedly engages a fourth lever 33 which is rotatably connected to the shaft of a pinion 34.
  • the pinion 34 is operatively connected to a rack 35 which is mounted on the rear end of the slide plate 18 of the gate valve 17.
  • the combined shut-off and cooling device operates in the manner described below.
  • the supply pipe 15 for supplying the pulverized coal-air mixture to the respective pulverized coal burners 1, 2 is opened, and the opening 25 in the wall of the supply pipe 15 for the entry of the cooling air is closed.
  • the closing plate 26 is pressed by the first lever 27 and the second lever 28 fixedly connected to it by the laterally arranged spring 31 fixed to the opening 25 in the supply line 15.
  • the air box 23, which encloses the supply line 15 in this area, is filled with air, so that adjusts a uniform temperature in this region of the supply line 15.
  • the rack 35 drives the pinion 34, whereby the closing plate 26 is actuated against the effective spring force of the spring 31 via the fourth lever 33, the articulated rod 32, the third lever 29 and the first lever 27.
  • the actuation of the closing plate 26 thus takes place directly over the slide plate 18 of the gate valve 17.
  • the closing plate 26 is now the opening 25 free. In this position, the fuel supply route is safely shut off.
  • the cooling air flows through the opening 25 in the wall of the supply line 15 on the downstream side of the gate valve 17 and exits at the burner nozzle of the respective pulverized coal burner 1, 2 and into the combustion chamber.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Solid-Fuel Combustion (AREA)
  • Sliding Valves (AREA)
  • Air Supply (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
EP03011794A 2002-06-05 2003-05-24 Absperreinrichtung an Kohlenstaubbrennern einer Kohlenstaubfeuerung Expired - Lifetime EP1369640B1 (de)

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
DE10225082 2002-06-05
DE10225082A DE10225082B4 (de) 2002-06-05 2002-06-05 Absperreinrichtung an Kohlenstaubbrennern einer Kohlenstaubfeuerung

Publications (3)

Publication Number Publication Date
EP1369640A2 EP1369640A2 (de) 2003-12-10
EP1369640A3 EP1369640A3 (de) 2004-05-19
EP1369640B1 true 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 (uk)
EP (1) EP1369640B1 (uk)
JP (1) JP4279602B2 (uk)
AT (1) ATE404817T1 (uk)
AU (1) AU2003204529B2 (uk)
CA (1) CA2429325A1 (uk)
DE (2) DE10225082B4 (uk)
DK (1) DK1369640T3 (uk)
ES (1) ES2311657T3 (uk)
HR (1) HRP20030457A2 (uk)
PL (1) PL199357B1 (uk)
PT (1) PT1369640E (uk)
SI (1) SI1369640T1 (uk)
UA (1) UA79738C2 (uk)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009014223A1 (de) 2009-03-25 2010-09-30 Hitachi Power Europe Gmbh Feuerungssystem eines für den Oxyfuel-Betrieb ausgelegten Dampferzeugers

Families Citing this family (10)

* Cited by examiner, † Cited by third party
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
DE102006050213B4 (de) * 2006-10-25 2009-11-19 Eisenmann Anlagenbau Gmbh & Co. Kg Absperrklappe insbesondere zur Verwendung in einer Vorrichtung zur Abgasreinigung
JP4898393B2 (ja) * 2006-11-09 2012-03-14 三菱重工業株式会社 バーナ構造
WO2009009945A1 (fr) * 2007-07-18 2009-01-22 Harbin Institute Of Technology Brûleur de charbon pulvérisé à turbulence à faible nox
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

Family Cites Families (12)

* Cited by examiner, † Cited by third party
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
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
US4448135A (en) * 1981-11-16 1984-05-15 The Babcock & Wilcox Company Inline air-coal separator
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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009014223A1 (de) 2009-03-25 2010-09-30 Hitachi Power Europe Gmbh Feuerungssystem eines für den Oxyfuel-Betrieb ausgelegten Dampferzeugers
WO2010108986A2 (de) 2009-03-25 2010-09-30 Hitachi Power Europe Gmbh Feuerungssystem eines für den oxyfuel-betrieb ausgelegten dampferzeugers

Also Published As

Publication number Publication date
DE50310302D1 (de) 2008-09-25
PL199357B1 (pl) 2008-09-30
PL360426A1 (en) 2003-12-15
EP1369640A3 (de) 2004-05-19
US20030226482A1 (en) 2003-12-11
DK1369640T3 (da) 2008-12-01
PT1369640E (pt) 2008-11-12
AU2003204529B2 (en) 2008-05-29
AU2003204529A1 (en) 2004-01-08
ES2311657T3 (es) 2009-02-16
DE10225082A1 (de) 2004-01-08
JP2004012124A (ja) 2004-01-15
SI1369640T1 (sl) 2009-02-28
CA2429325A1 (en) 2003-12-05
UA79738C2 (en) 2007-07-25
JP4279602B2 (ja) 2009-06-17
DE10225082B4 (de) 2007-04-26
US6807914B2 (en) 2004-10-26
ATE404817T1 (de) 2008-08-15
HRP20030457A2 (en) 2004-02-29
EP1369640A2 (de) 2003-12-10

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