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EP0907868A1 - Bruleur - Google Patents

Bruleur

Info

Publication number
EP0907868A1
EP0907868A1 EP97932774A EP97932774A EP0907868A1 EP 0907868 A1 EP0907868 A1 EP 0907868A1 EP 97932774 A EP97932774 A EP 97932774A EP 97932774 A EP97932774 A EP 97932774A EP 0907868 A1 EP0907868 A1 EP 0907868A1
Authority
EP
European Patent Office
Prior art keywords
burner
combustion
tube
chamber
core tube
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
Application number
EP97932774A
Other languages
German (de)
English (en)
Other versions
EP0907868B1 (fr
Inventor
Holger Wulfert
Friedrich Schmaus
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.)
Walter Brinkmann GmbH
Loesche GmbH
Original Assignee
Walter Brinkmann GmbH
Loesche 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 Walter Brinkmann GmbH, Loesche GmbH filed Critical Walter Brinkmann GmbH
Publication of EP0907868A1 publication Critical patent/EP0907868A1/fr
Application granted granted Critical
Publication of EP0907868B1 publication Critical patent/EP0907868B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/14—Special features of gas burners
    • F23D2900/14002—Special features of gas burners of premix or non premix types, specially adapted for the combustion of low heating value [LHV] gas

Definitions

  • the invention relates to a burner for mixing and burning at least two combustion media, according to the preamble of claim 1.
  • combustion air and a lean gas in particular can be used as the fuel gas.
  • the burners comprise a plurality of burner nozzles, each a pipe which extends to supply a combustion medium to a combustion chamber, and an inflow device for the other combustion medium at the end of the pipe on the combustion chamber side can be provided.
  • a generic burner is known from US 5,267,850, in which a burner system and a combustion method for high temperature applications are described.
  • a burner nozzle of this burner a central high-speed fuel flow is generated, which is surrounded by a low-speed flow in the form of a ring.
  • Another burner is used in the hot gas generator, which emerges from DE 42 08 951 C2.
  • This known burner has tubes for supplying a combustion medium, the free ends of which are surrounded by outlet nozzles for the inflow of a second combustion medium.
  • This known arrangement a very good burnout result is already achieved with a short burner flame. Nevertheless, it is desirable to further improve the known burner in terms of burnout level and flame length.
  • the invention is based on the object of creating a burner which, with a short flame, ensures the most complete possible combustion of combustion media, even with very low calorific values.
  • a burner nozzle with at least three tubes arranged coaxially to one another is provided, namely an inner core tube, an outer tube and at least one intermediate tube arranged between them.
  • the tubes are spaced from one another in the radial direction to form annular gap channels through which combustion media can be conducted into the combustion chamber.
  • the flame on the burner nozzle can be adjusted in almost any desired manner.
  • more than two combustion media with different pressures can be used.
  • the at least three burner nozzle openings arranged concentrically to one another also ensure intensive mixing of the combustion media and thus a particularly large combustion surface. This results in a short flame and a very good burnout rate.
  • the staggered arrangement of the tubes in the axial direction to each other therefore allows an optimal temporally and spatially offset mixing of the gases.
  • An advantage of the burner according to the invention is the possibility of being able to operate it with so-called weak gas, which is a fuel gas with a relatively low calorific value.
  • weak gas which is a fuel gas with a relatively low calorific value.
  • a particularly good combustion result is achieved by the pipes extending into the combustion chamber at different distances.
  • the tubes of the burner nozzle therefore have a stepped arrangement.
  • the burner nozzle openings are offset from one another in the axial direction of the tubes.
  • the outer tube extends further into the combustion chamber than the intermediate tube.
  • the outer tube thus forms a lateral boundary of the burner nozzle, as a result of which the influence of adjacent burner nozzles on the mixing process is largely avoided.
  • the core tube extends further into the combustion chamber than the intermediate tube. In this way, the combustion media which flow out of the annular gap channels are initially mixed. After mixing in the side areas of the burner nozzle, an additional swirling and thus a particularly large contact area between the combustion media is achieved by the flow from the core tube.
  • the outer tube extends further into the combustion chamber than the core tube.
  • a chamber is provided for each combustion medium, which is connected to the line with each burner nozzle.
  • the individual chambers which are separate from one another, in turn have inlets through which the respective combustion medium flows into the associated chamber, the respective pressure of the combustion medium being able to be set in a simple manner in the chambers.
  • This embodiment is further developed in that three chambers are provided, of which a first chamber is connected to the core tube, a second chamber to the annular gap channel formed by the core tube and intermediate tube and a third chamber to the annular gap channel formed by the intermediate tube and outer tube.
  • a first combustion medium flows through the first chamber and the core tube into the combustion chamber.
  • the second combustion medium flows into the combustion chamber via the second chamber and the associated annular gap channel, while the third combustion medium is conducted through the third chamber and the other annular gap channel. This separate feed allows good mixing with three different combustion media.
  • An alternative embodiment is that two chambers are provided, one of which is connected to the core tube and an annular gap channel. The other chamber is then correspondingly connected to the one or more remaining annular gap channels.
  • two combustion media can flow into the combustion chamber through several separate burner nozzle openings, which leads to a high desired degree of swirling.
  • the burner nozzle has four tubes. In addition to the core tube opening, there are a total of three annular gap openings. As a result, four combustion media can be supplied separately from each other in this embodiment. If fewer combustion media are used, individual combustion media can be supplied via several burner nozzle openings in order to achieve good mixing. Insofar as special applications justify the design effort, burner nozzles with five or more tubes can of course be provided.
  • swirl devices are provided on the combustion chamber end of the combustion nozzle.
  • the swirl devices can be essentially radially directed nozzles.
  • a particularly simple and effective swirl device, for example for the core tube, consists in the formation of radially directed bores in the core tube wall, the free end of the core tube being closed with a plate.
  • the burner according to the invention is further developed such that a starting burner is provided, around which the burner nozzles are arranged.
  • the start burner is supplied with separate combustion media, especially a high-quality fuel gas. After a certain start-up time, the start burner can then be switched off again.
  • one of the combustion media can be a sulfur-containing gas, in particular also hydrogen sulfide.
  • gases which have so far mostly been disposed of in a complex manner must now be thermally burned or utilized with the burner according to the invention.
  • Fig. 1 is a schematic partial cross-sectional view of a burner according to the invention.
  • Fig. 2 is a schematic front view of the burner according to the invention, the magnification being smaller than that in Fig. 1.
  • FIG. 1 shows a burner 10 according to the invention with a burner nozzle 11, which is constructed from three tubes arranged coaxially to one another.
  • the inner tube is referred to as a core tube 20, which is surrounded by an intermediate tube 30 and an outer tube 40.
  • the core tube 20 is connected via a flange 24 to the wall of a first chamber 21, so that a first combustion medium 28 can flow into the core tube 20 through the inlet 23 through the first chamber 21.
  • the flange 24 is fastened to the wall of the first chamber 21 around a through opening 22 by a suitable connection, for example a weld seam or a gas-tight screw connection.
  • the core tube 20 extends through a second chamber 31 and a third chamber 41 in the direction of a combustion chamber 12 in which the combustion process takes place.
  • a second or so-called intermediate tube 30 is fastened to the second chamber 31 around a through opening 32 via a flange 34.
  • the inner diameter of the intermediate tube 30, which extends coaxially in the direction of the combustion chamber 12, is larger than the outer diameter of the core tube 20, so that a first annular gap channel 39 is formed between the core tube 20 and the intermediate tube 30.
  • a second combustion medium 38 can flow through this first annular gap channel 39 via an inlet 33 and the second chamber 31 to the free end of the burner nozzle 11.
  • the core tube 20 and the intermediate tube 30 are surrounded by an outer tube 40 which extends coaxially to the other two tubes in the direction of the combustion chamber 12.
  • the outer pipe 40 is fastened around a through opening 42 on a wall of the third chamber on the combustion chamber side by means of a flange 44.
  • the inner diameter of the outer tube 40 is in turn larger than the outer diameter of the intermediate tube 30, so that a second annular gap channel 49 is formed.
  • a third combustion medium 48 can flow through this annular gap channel 49 into the combustion chamber 12 via an inlet 43 and the third chamber 41.
  • one or two fuel gases are usually passed through the core tube 20 and the first annular gap channel, while the second annular gap channel 49 is used to supply combustion air.
  • acidic gases can be passed through the core tube 20 and the first annular gap channel 39, for example gases of the same or different concentration containing hydrogen sulfide.
  • the second combustion medium 38 that emerges from the opening of the first annular gap channel 39 is first , mixed with the third combustion medium 48, which flows out of the outlet opening of the second annular gap channel 49.
  • the first combustion medium 28 flow from the core tube 20 into the mixing zone 13, so that a further turbulence which is spatially and temporally offset from the first mixing process thereby takes place.
  • the outer pipe 40 which is led farthest into the combustion chamber 12, serves to delimit the mixing zone 13 from the side, so that a locally limited zone with strong turbulence is ensured.
  • swirl devices 25, 35 are provided on the core tube 20 and the intermediate tube 30.
  • the swirl devices 25, 35 each consist of an end plate 26, 36, which is placed on the combustion chamber end of the core tube 20 or the intermediate tube 30.
  • the respective combustion medium 28, 38 flows into the mixing zone 13 in the radial direction via radially directed bores or grooves 27, 37.
  • a particularly strong swirl is created by superimposition with the axially directed flow from the second annular gap channel 49.
  • FIG. 2 shows a reduced front view of the burner 10 according to the invention. From this it can be seen that a centrally arranged start burner 14 is provided, around which a plurality of burner nozzles 11 are arranged, some of which, for reasons of clarity, only show their centers. In the example, only a nozzle of the inlet 23 is shown, through which the first combustion medium 28 flows into the first chamber 21.
  • the second and third inlet connections are of course available.
  • the burner according to the invention which has a large number of individual burner nozzles 11, therefore creates a large surface for the combustion. It is therefore possible to burn hydrogen sulfide-containing or acid-containing gases with this burner, these acid-containing gases preferably being mixed very intensively with the combustion air flowing perpendicularly thereto.
  • the burner can be regulated so that in such a case the start burner is put back into operation immediately in order to maintain the required outlet temperature of the burner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)

Abstract

L'invention concerne un brûleur (10) pour le mélange et la combustion d'au moins deux milieux de combustion (28, 38, 48), en particulier d'air de combustion et d'un gaz pauvre utilisé comme gaz de combustion. Le brûleur comprend plusieurs gicleurs qui sont formés chacun d'au moins trois tubes (20, 30, 40) disposés coaxialement les uns par rapport aux autres. Les tubes sont à distance l'un de l'autre, dans le sens radial, de manière à former des canaux à espaces annulaires (39, 49) au travers desquels les milieux de combustion sont amenés vers une chambre de combustion. Le dispositif selon l'invention permet d'obtenir un bon mélange et une bonnne combustion de plusieurs milieux de combustion gazeux.
EP97932774A 1996-07-05 1997-07-04 Bruleur Expired - Lifetime EP0907868B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19627203A DE19627203C2 (de) 1996-07-05 1996-07-05 Brenner
DE19627203 1996-07-05
PCT/EP1997/003545 WO1998001707A1 (fr) 1996-07-05 1997-07-04 Bruleur

Publications (2)

Publication Number Publication Date
EP0907868A1 true EP0907868A1 (fr) 1999-04-14
EP0907868B1 EP0907868B1 (fr) 2001-02-28

Family

ID=7799071

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97932774A Expired - Lifetime EP0907868B1 (fr) 1996-07-05 1997-07-04 Bruleur

Country Status (8)

Country Link
US (1) US6019595A (fr)
EP (1) EP0907868B1 (fr)
JP (1) JP2000514171A (fr)
BR (1) BR9710202A (fr)
DE (2) DE19627203C2 (fr)
TW (1) TW354361B (fr)
WO (1) WO1998001707A1 (fr)
ZA (1) ZA975661B (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19839085C2 (de) * 1998-08-27 2000-06-08 Siemens Ag Brenneranordnung mit primärem und sekundärem Pilotbrenner
DE19925875A1 (de) * 1999-06-07 2000-12-14 Krupp Polysius Ag Rohrförmiger Brenner für Industrieöfen
FR2802616B1 (fr) * 1999-12-16 2002-02-08 Inst Francais Du Petrole Methode et dispositif d'auto-combustion de dechets organiques graisseux comportant un foyer a chauffe tangentielle
ATE278153T1 (de) * 2000-03-13 2004-10-15 John Zink Co Llc Wandstrahlungsbrenner mit niedriger nox-emission
US6551098B2 (en) * 2001-02-22 2003-04-22 Rheem Manufacturing Company Variable firing rate fuel burner
US20040084087A1 (en) * 2002-10-30 2004-05-06 Sanfilippo John E. Apparatus and method for controlling and distributing gas flow
RU2243447C2 (ru) * 2002-12-30 2004-12-27 Открытое акционерное общество "Энергомашкорпорация" Горелка
US7163392B2 (en) * 2003-09-05 2007-01-16 Feese James J Three stage low NOx burner and method
DE102005034791B4 (de) * 2005-07-21 2007-11-22 Sks Gmbh Gasbrenner
FR2889292B1 (fr) * 2005-07-26 2015-01-30 Optimise Procede et installation de combustion sans soutien de gaz combustible pauvre a l'aide d'un bruleur et bruleur associe
US8215950B2 (en) * 2009-04-07 2012-07-10 Genral Electric Company Low emission and flashback resistant burner tube and apparatus
US8920159B2 (en) * 2011-11-23 2014-12-30 Honeywell International Inc. Burner with oxygen and fuel mixing apparatus
IN2014DN09007A (fr) 2012-06-05 2015-05-22 Loesche Gmbh
DE102012016086A1 (de) * 2012-08-14 2014-02-20 Thyssenkrupp Uhde Gmbh Vorrichtung und Verfahren zur Eindüsung von Sauerstoff in eine druckaufgeladene Wirbelschichtvergasung
WO2014169963A1 (fr) 2013-04-19 2014-10-23 Loesche Gmbh Brûleur central pour système de brûleur multi-lances multi-combustibles
DE102013019934A1 (de) 2013-11-25 2015-05-28 Brinkmann Industrielle Feuerungssysteme Gmbh Verfahren und Vorrichtung zur Erzeugung von Heiß-/Trocknungsgasen
DE202014004013U1 (de) 2014-05-14 2015-05-20 Brinkmann Industrielle Feuerungssysteme Gmbh Brenner
JP7083211B1 (ja) 2022-02-04 2022-06-10 株式会社カシワテック 燃焼装置及び燃焼システム
US20250060096A1 (en) 2023-08-14 2025-02-20 Air Products And Chemicals, Inc. Burner and Method of Operation

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3706520A (en) * 1970-08-28 1972-12-19 Shell Oil Co Apparatus and method for heating shaft furnaces with fuel gas
JPS5333903A (en) * 1976-09-10 1978-03-30 Nippon Steel Corp Burner for heat regeneration type hot stove
US4383820A (en) * 1980-10-10 1983-05-17 Technology Application Services Corporation Fuel gas burner and method of producing a short flame
US4402666A (en) * 1980-12-09 1983-09-06 John Zink Company Forced draft radiant wall fuel burner
US4602571A (en) * 1984-07-30 1986-07-29 Combustion Engineering, Inc. Burner for coal slurry
US5044931A (en) * 1990-10-04 1991-09-03 Selas Corporation Of America Low NOx burner
GB9024786D0 (en) * 1990-11-14 1991-01-02 Boc Group Plc Burners
US5308239A (en) * 1992-02-04 1994-05-03 Air Products And Chemicals, Inc. Method for reducing NOx production during air-fuel combustion processes
DE4208951C2 (de) * 1992-03-19 1996-01-18 Loesche Gmbh Heißgaserzeuger
US5267850A (en) * 1992-06-04 1993-12-07 Praxair Technology, Inc. Fuel jet burner

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9801707A1 *

Also Published As

Publication number Publication date
JP2000514171A (ja) 2000-10-24
ZA975661B (en) 1998-01-23
TW354361B (en) 1999-03-11
EP0907868B1 (fr) 2001-02-28
DE59703063D1 (en) 2001-04-05
BR9710202A (pt) 1999-08-10
DE19627203C2 (de) 2000-11-09
DE19627203A1 (de) 1998-01-08
WO1998001707A1 (fr) 1998-01-15
US6019595A (en) 2000-02-01

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