EP0314910B1 - Brennersystem zur NOx-armen Verbrennung von schwerem Heizöl - Google Patents

Brennersystem zur NOx-armen Verbrennung von schwerem Heizöl Download PDF

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Publication number
EP0314910B1
EP0314910B1 EP88115443A EP88115443A EP0314910B1 EP 0314910 B1 EP0314910 B1 EP 0314910B1 EP 88115443 A EP88115443 A EP 88115443A EP 88115443 A EP88115443 A EP 88115443A EP 0314910 B1 EP0314910 B1 EP 0314910B1
Authority
EP
European Patent Office
Prior art keywords
burner
burner system
outlet
flue gas
air duct
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
EP88115443A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0314910A3 (de
EP0314910A2 (de
Inventor
Rolf Oppenberg
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.)
Deutsche Babcock Werke Energie und Umwelttechnik AG
Original Assignee
Deutsche Babcock Werke Energie und 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 Deutsche Babcock Werke Energie und Umwelttechnik AG filed Critical Deutsche Babcock Werke Energie und Umwelttechnik AG
Priority to AT88115443T priority Critical patent/ATE91330T1/de
Publication of EP0314910A2 publication Critical patent/EP0314910A2/de
Publication of EP0314910A3 publication Critical patent/EP0314910A3/de
Application granted granted Critical
Publication of EP0314910B1 publication Critical patent/EP0314910B1/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
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • F23C9/06—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for completing combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2201/00—Staged combustion
    • F23C2201/30—Staged fuel supply

Definitions

  • the invention relates to a burner system for low NOx combustion of heavy oil for a fire-tube boiler having the features of the preamble of claim 1.
  • Such a burner system is known from US-A-3 259 108. Difficulties arise with this system when the burner is operated with heavy oil and used to heat a flame tube boiler. In the flame tube of the flame tube boiler, which is cooled on all sides, the heavy oil burns only incompletely, especially if a small excess of air and a gradual air input are used for the purpose of suppressing the formation of NO x .
  • a firing system for the combustion of brown coal is known in which ash components are separated from the flue gas via a separator. These ash components are fed to individual burners with the help of flue gas or returned directly to the furnace.
  • the invention has for its object to design the generic burner system so that complete combustion while suppressing NO x formation is guaranteed.
  • the coarse dust components such as ash and unburned material are separated in the separator in the flue gas line and fed back to the burner for post-combustion. In this way, a certain proportion of the unburned can be allowed to burn.
  • the drawing shows a flame tube boiler with a burner system according to the invention.
  • the flame tube boiler designed as a large water chamber boiler consists of a flame tube 1 and smoke tubes 2, which are arranged within a pressure jacket 3 filled with water.
  • the pressure jacket 3 is with a water inlet and a nozzle 4 for saturated steam extraction.
  • the flue pipes 2 are connected to one another via a rear turning chamber 5 and a front turning chamber 6 and are led to a flue gas outlet 7.
  • a burner is flanged to the flame tube 1 and is connected to an air box 8 for supplying combustion air.
  • a control flap 9 is provided at the entrance of the air box 8.
  • An axially displaceable swirl body 10 is arranged within the air box 8.
  • the burner has a fireproof-lined, step-widening chamber 15.
  • the chamber 15 contains a central primary air duct 16, which connects the air box 8 to the flame tube 1.
  • An oil burner lance 17 is guided through the air box 8 and the primary air duct 16 and is loaded with heavy oil.
  • the oil burner lance 17 can be adjusted within the primary air duct 16 via a linkage.
  • the central primary air duct 16 is surrounded by secondary air inlets 18 which penetrate the wall of the chamber 15 and open into the flame tube 1 at an axial distance from the outlet cross section of the primary air duct 16.
  • the ends of the secondary air ducts 18 protrude beyond the chamber 15 and are axially displaceable via a linkage.
  • a flue gas line 19 is connected to the flue gas outlet 7 of the flame tube boiler and leads to a chimney (not shown).
  • a separator 20, which is preferably designed as a centrifugal separator, and a compact system 21 for residual dedusting, desulfurization and denitrification are arranged in the flue gas line 19.
  • the solids discharge of the separator 20 is connected to the burner via a line 22 in which a flue gas blower 23 is arranged.
  • the line 22 is led to a passage formed in the wall of the chamber 15, which is formed from a ring of nozzle tubes 24.
  • nozzle pipes instead of nozzle pipes, a single nozzle or an annular channel can also be used be provided.
  • the nozzle tubes 24 lie on a pitch circle between the central primary air duct 16 and the secondary air inlets 18.
  • the outlet cross section of the nozzle tubes 24 lies in the direction of the longitudinal axis of the burner behind the outlet cross section of the central primary air duct 16 and before the outlet cross section of the secondary air inlets 18.
  • a shut-off device 25 is provided in line 22.
  • the flue gas blower 23 sucks a mixture stream of flue gas and coarser dust components from the solid discharge of the separator 20, which in addition to ash also contain unburned material which is re-burned after being blown back into the burner.
  • the jets emerging from the nozzle tubes 24 are oriented at a spatial angle to the burner axis so that they produce a rotational movement.
  • a branch line 26 is branched off from the flue gas line 19 connected to the gas outlet of the separator 20.
  • a partial flow of the flue gas is fed to the air box 8 via the branch line 26 via a control flap 27, which controls the quantity of the returned flue gas.
  • This recirculated amount of flue gas mixed with the combustion air is blown into the flame tube 1 through the primary air duct 16 and the secondary air supply lines 18.
  • a cooled lance 28 projects into the end of the flame tube 1 facing away from the burner.
  • the lance 28 is provided with outlet openings 29, 30 through which additional fuel and additional air are introduced into the flame tube 1.
  • the outlet openings 29 for the additional fuel extend deeper into the flame tube 1 than the outlet openings 30 for the additional air.
  • the addition of additional fuel and additional air serves to reduce the nitrogen oxide formed in the flame.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Of Fluid Fuel (AREA)
EP88115443A 1987-11-04 1988-09-21 Brennersystem zur NOx-armen Verbrennung von schwerem Heizöl Expired - Lifetime EP0314910B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88115443T ATE91330T1 (de) 1987-11-04 1988-09-21 Brennersystem zur nox-armen verbrennung von schwerem heizoel.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3737321 1987-11-04
DE3737321A DE3737321C1 (de) 1987-11-04 1987-11-04 Einrichtung zur Verbrennung von Schweroel

Publications (3)

Publication Number Publication Date
EP0314910A2 EP0314910A2 (de) 1989-05-10
EP0314910A3 EP0314910A3 (de) 1991-08-28
EP0314910B1 true EP0314910B1 (de) 1993-07-07

Family

ID=6339700

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88115443A Expired - Lifetime EP0314910B1 (de) 1987-11-04 1988-09-21 Brennersystem zur NOx-armen Verbrennung von schwerem Heizöl

Country Status (6)

Country Link
US (1) US4862835A (ja)
EP (1) EP0314910B1 (ja)
JP (1) JP2762085B2 (ja)
AT (1) ATE91330T1 (ja)
DE (2) DE3737321C1 (ja)
ES (1) ES2041290T3 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1004941A3 (nl) * 1991-06-06 1993-03-02 Bruggemans B V B A Verbrandingsinstallatie, bestemd voor zware en extra zware stookolie.
US5460512A (en) * 1993-05-27 1995-10-24 Coen Company, Inc. Vibration-resistant low NOx burner
JP2776429B2 (ja) * 1993-06-14 1998-07-16 東京瓦斯株式会社 窒素酸化物低発生炉内燃焼方法
FR2825448B1 (fr) * 2001-05-30 2003-09-12 Inst Francais Du Petrole Generateur thermique permettant de limiter les emissions d'oxydes d'azote par recombustion des fumees et procede pour la mise en oeuvre d'un tel generateur
BRPI1006158A2 (pt) * 2009-01-16 2016-02-23 Air Prod & Chem dispositivo de combustão, método para combustão de pelo menos um dentre combustíveis gasosos e líquidos, e kit para um dispositivo de combustão
EP2218965A1 (en) * 2009-02-16 2010-08-18 Total Petrochemicals Research Feluy Low NOx burner
US11649960B2 (en) * 2021-04-02 2023-05-16 Honeywell International Inc. Low NOx burner with bypass conduit

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3259108A (en) * 1964-05-12 1966-07-05 Orr & Sembower Inc Boilers
US3880570A (en) * 1973-09-04 1975-04-29 Babcock & Wilcox Co Method and apparatus for reducing nitric in combustion furnaces
US3868211A (en) * 1974-01-11 1975-02-25 Aqua Chem Inc Pollutant reduction with selective gas stack recirculation
GB1468525A (en) * 1974-02-25 1977-03-30 British Petroleum Co Oil fired heating plant
JPS5236610B2 (ja) * 1974-05-09 1977-09-17
FR2334914A1 (fr) * 1975-12-10 1977-07-08 Air Ind Procede d'elimination de poussieres combustibles imbrulees en suspension dans des fumees et installation pour sa mise en oeuvre
CH622081A5 (ja) * 1977-06-17 1981-03-13 Sulzer Ag
DE3324411A1 (de) * 1983-07-06 1985-01-24 Steag Ag, 4300 Essen Verfahren zur verbrennung von staubfoermigem brennstoff und dampferzeuger zur durchfuehrung des verfahrens
JPS6033423A (ja) * 1983-08-05 1985-02-20 Babcock Hitachi Kk 燃焼装置の制御方法
DE3331674A1 (de) * 1983-09-02 1985-04-18 Rheinische Braunkohlenwerke AG, 5000 Köln Feuerungsanlage
DE3501189A1 (de) * 1985-01-16 1986-07-17 Henkel KGaA, 4000 Düsseldorf Verfahren und anlage zur reduzierung des no(pfeil abwaerts)x(pfeil abwaerts)-gehaltes von mittels fossiler brennstoffe beheizten grossfeuerungsanlagen

Also Published As

Publication number Publication date
JPH01163512A (ja) 1989-06-27
US4862835A (en) 1989-09-05
ATE91330T1 (de) 1993-07-15
EP0314910A3 (de) 1991-08-28
JP2762085B2 (ja) 1998-06-04
ES2041290T3 (es) 1993-11-16
DE3882201D1 (de) 1993-08-12
EP0314910A2 (de) 1989-05-10
DE3737321C1 (de) 1989-04-27

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