EP4019836B1 - Shaped burner piece with internal flue gas recirculation - Google Patents

Shaped burner piece with internal flue gas recirculation Download PDF

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Publication number
EP4019836B1
EP4019836B1 EP21214919.9A EP21214919A EP4019836B1 EP 4019836 B1 EP4019836 B1 EP 4019836B1 EP 21214919 A EP21214919 A EP 21214919A EP 4019836 B1 EP4019836 B1 EP 4019836B1
Authority
EP
European Patent Office
Prior art keywords
gas
diffuser
air
flue
burner
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.)
Active
Application number
EP21214919.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP4019836A1 (en
EP4019836C0 (en
Inventor
Pavel Skryja
Jiri Bojanovsky
Igor Hudak
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.)
2jcp Trebic AS
Vysoke Uceni Technicke V Brne
Original Assignee
2jcp Trebic AS
Vysoke Uceni Technicke V Brne
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 2jcp Trebic AS, Vysoke Uceni Technicke V Brne filed Critical 2jcp Trebic AS
Publication of EP4019836A1 publication Critical patent/EP4019836A1/en
Application granted granted Critical
Publication of EP4019836C0 publication Critical patent/EP4019836C0/en
Publication of EP4019836B1 publication Critical patent/EP4019836B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F23M5/02—Casings; Linings; Walls characterised by the shape of the bricks or blocks used
    • F23M5/025—Casings; Linings; Walls characterised by the shape of the bricks or blocks used specially adapted for burner openings
    • 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 
    • F23C6/00—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion
    • F23C6/04—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection
    • F23C6/045—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection with staged combustion in a single enclosure
    • F23C6/047—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection with staged combustion in a single enclosure with fuel supply in stages
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details
    • F23D11/40—Mixing tubes; Burner heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details
    • F23D14/62—Mixing devices; Mixing tubes
    • 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
    • F23C2201/20—Burner staging
    • 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
    • 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 
    • F23C2202/00—Fluegas recirculation
    • F23C2202/10—Premixing fluegas with fuel and combustion air
    • 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 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/09002—Specific devices inducing or forcing flue gas recirculation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/007—Mixing tubes, air supply regulation

Definitions

  • the invention relates to a burner shaped piece for monobloc burners for water heating and steam generation with low nitrogen oxide emissions.
  • Document WO 01/63176 A1 introduces a burner assembly that is designed for installation into the wall or roof of a furnace.
  • the front part of the burner assembly which projects into the combustion zone of the furnace consists of a cylindrical body of a larger diameter and a concentric smaller cylindrical body arranged therein, so that an annular channel between them for inlet of recirculated flue gas is formed. Outside the wall of the furnace the inlet of the air is arranged, which is mixed in the annular channel with the recirculated flue gas in the required ratio to reduce NOx emissions.
  • EP 1 867 923 A2 introduces a burner with low CO and NOx emissions, comprising a hollow cylindrical burner body in the centre of which primary gas is fed through a nozzle into the air stream and secondary gas is fed along the inner and outer perimeter of the body.
  • the burner body has ports in the upper part around the perimeter, which have rounded upper surfaces to take advantage of the effect of the flowing viscous gas which flows along the rounded upper surfaces and this allows to introduce more gas to enter the gas/air mixture resulting in better flame stability and it solves the problems of flame pulsation.
  • Document EP 0 408 171A presents a burner assembly with two diffusers installed in the furnace wall.
  • the fuel is fed into the inner combustion diffuser.
  • This combustion diffuser has a shaped, elongated front portion around which a mixing diffuser is arranged, so that a channel is formed between the outer wall of the combustion diffuser and the inner wall of the mixing diffuser in order to enable the air to flow into the fuel to form a mixture.
  • the aim of the invention is to introduce a burner shaped piece with internal flue gas recirculation adapted to the compact dimensions of monobloc natural gas burners.
  • a burner shaped piece with internal flue gas recirculation according to the invention, the substance of which is that it comprises an inlet gas-air diffuser and in front of it at an axial distance an outlet gas-air-flue diffuser is arranged, wherein the diffusers are connected together by four regularly spaced ribs arranged around an inner circumference of the burner shaped piece and the gas-air diffuser has a hollow conical taper terminated by a cylindrical flow-direction regulator, wherein the gas-air-flue diffuser has a hollow conical taper terminated by a cylindrical flow-direction regulator, wherein the gas-air-flue diffuser has a larger diameter as at the beginning and so at the end of its hollow conical taper than the diameter at the beginning and at the end of the hollow conical taper of the gas-air diffuser, and in the spaces between the outer surface of the gas-air diffuser and the inner face of the gas-air-flue diffuser and the inner surface of the hollow conical taper of the gas
  • the gas-air diffuser has a cylindrical surface on the outer circumference provided with a set-up opening adapted for adjusting a monobloc burner having an axis perpendicular to the axis of the gas-air diffuser.
  • FIG. 1 is a front view of an outlet of a burner shaped piece according to the invention
  • Fig. 2 is a section through the burner shaped piece along the Z-Z line of Fig. 1
  • Fig. 3 is a perspective view of an inlet of the burner shaped piece
  • Fig. 4 is a perspective view of an outlet of the burner shaped piece
  • Fig. 5 is a perspective view of the burner shaped piece from aside.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
EP21214919.9A 2020-12-22 2021-12-15 Shaped burner piece with internal flue gas recirculation Active EP4019836B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CZ2020-713A CZ2020713A3 (cs) 2020-12-22 2020-12-22 Hořáková tvarovka s vnitřní recirkulací spalin

Publications (3)

Publication Number Publication Date
EP4019836A1 EP4019836A1 (en) 2022-06-29
EP4019836C0 EP4019836C0 (en) 2023-10-11
EP4019836B1 true EP4019836B1 (en) 2023-10-11

Family

ID=78149166

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21214919.9A Active EP4019836B1 (en) 2020-12-22 2021-12-15 Shaped burner piece with internal flue gas recirculation

Country Status (2)

Country Link
EP (1) EP4019836B1 (cs)
CZ (1) CZ2020713A3 (cs)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115076685A (zh) * 2022-06-30 2022-09-20 同济大学 一种烟气内循环旋流低氮燃烧器

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CS259947B1 (cs) * 1987-04-02 1988-11-15 Evzen Oklestek Plynový monoblokový hořák
JPH0740831Y2 (ja) * 1989-04-28 1995-09-20 日本碍子株式会社 バーナータイル
US20010034001A1 (en) * 2000-02-24 2001-10-25 Poe Roger L. Low NOx emissions, low noise burner assembly and method for reducing the NOx content of furnace flue gas
US7878798B2 (en) * 2006-06-14 2011-02-01 John Zink Company, Llc Coanda gas burner apparatus and methods
DE202009010692U1 (de) * 2009-08-07 2010-09-16 Meku Metallverarbeitungs Gmbh & Co. Kg Mischeinrichtung für einen Brenner
CN205782915U (zh) * 2016-05-23 2016-12-07 上海策立工程技术有限公司 烟气自呼吸式多流股全氧烧嘴

Also Published As

Publication number Publication date
EP4019836A1 (en) 2022-06-29
CZ308978B6 (cs) 2021-10-27
EP4019836C0 (en) 2023-10-11
CZ2020713A3 (cs) 2021-10-27

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