EP0650012A1 - Brûleur - Google Patents

Brûleur Download PDF

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Publication number
EP0650012A1
EP0650012A1 EP94890172A EP94890172A EP0650012A1 EP 0650012 A1 EP0650012 A1 EP 0650012A1 EP 94890172 A EP94890172 A EP 94890172A EP 94890172 A EP94890172 A EP 94890172A EP 0650012 A1 EP0650012 A1 EP 0650012A1
Authority
EP
European Patent Office
Prior art keywords
burner
primary air
axis
adjusting ring
flow
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.)
Withdrawn
Application number
EP94890172A
Other languages
German (de)
English (en)
Inventor
Heinz Lederer
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.)
Unitherm Osterreichische Gesellschaft fur Universelle Warmetechnik Mbh
Original Assignee
Unitherm Osterreichische Gesellschaft fur Universelle Warmetechnik Mbh
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 Unitherm Osterreichische Gesellschaft fur Universelle Warmetechnik Mbh filed Critical Unitherm Osterreichische Gesellschaft fur Universelle Warmetechnik Mbh
Publication of EP0650012A1 publication Critical patent/EP0650012A1/fr
Withdrawn legal-status Critical Current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 
    • F23C7/00—Combustion apparatus characterised by arrangements for air supply
    • F23C7/002—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion

Definitions

  • the invention relates to a burner, in particular for rotary furnaces, with at least one fuel channel for solid, gaseous and / or liquid fuels, which is surrounded by at least one primary air channel with an annular cross section, with a swirl generating device in the primary air channel.
  • two or more primary air channels are usually provided, which are arranged either coaxially on the outside or between the fuel channels.
  • at least one swirl air duct with a swirl generating device at the nozzle end and at least one axial air duct are provided in the known burners.
  • the flame shape can be influenced by merging the swirl and the axial flow and the resulting air flow.
  • this nozzle system has the disadvantage that only a non-homogeneous mixing of the air into the fuel is possible by combining several air streams, which causes an uneven flame control. Due to the interaction of the air flows from radial and swirl air ducts, considerable flow losses also occur, which must be compensated for by the primary air fans.
  • burners are known whose swirl generation adjustment is arranged on the hot area of the primary air outlet, as a result of which a change in the swirl angle is only possible when the plant is at a standstill.
  • a burner with a nozzle outlet construction for gaseous fuels formed by flexible tubes is known, with which the flame shape can be influenced during operation.
  • the ones in The flexible tubes located in the combustion chamber are divergent or convergent radially with respect to the burner axis by means of a kind of toggle lever mechanism, the tubes themselves not being moved around the burner axis, but rather being bent around a straight line normal to the burner axis.
  • the flame shape is only influenced by the convergent or divergent fuel nozzles.
  • a swirl generating device for the combustion air which is necessary for the formation of a swirly, circular, stable free jet, is not provided.
  • the object of the invention is to avoid these disadvantages and to provide a burner with which an operational setting of the flame shape can be achieved in a wide range, with homogeneous mixing of the air with the fuel allowing a smooth flame control with low flow losses.
  • the swirl generating device consists of a plurality of flexible tubes, known per se, arranged in a rotationally symmetrical manner about the burner axis and through which the primary air flows, which are arranged approximately in the direction of flow of the primary air, the tubes in their flow entry area being rotatably mounted about the burner axis Adjustment ring are clamped and secured in their flow exit area by fastening means against rotation about the burner axis and that adjustment means are provided for rotating the adjustment ring. Twisting the adjustment ring results in a helical twisting of the flexible tubes around the burner axis.
  • the air flow in the primary air duct which is designed as an annular space, enters the pipes in the region of the adjusting ring and is thereby divided into partial flows, which get a radial swirl component due to the twisting of the pipes.
  • the individual partial air flows emerging from the flexible pipes have the same orientation, whereby mutual interference is avoided, so that the flow losses remain minimal.
  • the primary air fans that feed the burner can be used at a lower pressure potential, which results in considerable energy savings.
  • each fastening means consists of a pin rigidly connected to the burner, on which a tube is guided in a longitudinal slot in the flow exit area of the tube.
  • the adjusting device consists of an actuating rod arranged in the direction of the burner axis and a sliding link preferably designed as a cylinder segment, the actuating rod via a guide pin in a slot of the sliding link arranged obliquely with respect to the burner axis, which is connected to the Adjusting ring is rigidly connected, engages so that a rotational movement of the adjusting ring can be initiated by an axial movement of the push rod.
  • a display scale for the position of the actuating rod an exact and user-friendly setting of the desired rotation of the primary air flow and thus of the flame shape during operation can be achieved.
  • a single primary air duct is provided.
  • a circular ring is selected as the channel cross section, which enables a high air throughput with minimal flow losses.
  • This also has an advantageous effect on production, since nozzle installations, connecting pieces, etc. need only be provided for a single primary air duct, which leads to lower production costs and a reduction in weight.
  • FIG. 1 shows a burner according to the invention in longitudinal section
  • FIG. 2 shows a section through the burner along the line II-II in FIG. 1
  • FIG. 3 shows a section through the burner according to the line III-III in FIG. 1.
  • the burner 1 shown in the exemplary embodiment is designed as a multi-fuel burner.
  • Liquid fuel can be supplied through the centrally arranged oil lance 2.
  • a gas channel 3 is arranged concentrically to the oil lance 2.
  • a cooling air space 4 is provided between gas duct 3 and oil lance 2.
  • the coal dust duct 5 is then arranged concentrically to the gas duct 3.
  • the annular primary air duct 6 is provided as the outermost annular space on the coal dust duct 5.
  • the primary air duct 6 has - seen in the flow direction 6a of the primary air - an annular rotation chamber 7 in front of the primary air nozzle 6 ', in which a number of flexible tubes 8 are arranged in a ring.
  • the tubes 8 are, on the one hand, firmly clamped in the region of their flow inlet 8 'in an adjusting ring 9 which can be rotated about the burner axis 1'.
  • the tubes 8 are displaceable in their longitudinal direction in the region of their flow outlet 8 ′′ and are rotatably mounted in the burner 1 about a geometrical axis 10 going through the burner axis 1 ′.
  • the flexible tubes 8 can be brought from a position aligned parallel to the burner axis 1 'into a helically twisted position with respect to the burner axis 1' by rotating the adjusting ring 9, the tubes abutting the inner wall 11 of the primary air duct 6.
  • the fastening means 14 in the outlet area 8 ′′ of the flexible tubes 8 can consist, for example, of fixed pins 12, which are guided in longitudinal slots 13 in the outlet area 8 ′′ of the tubes 8.
  • the swirl generating device 14 formed in this way from flexible tubes 8 enables the swirl angle ⁇ of the primary air flow to be continuously adjusted within a wide range of approximately 10 ° to 40 °.
  • the adjusting means 16 for rotating the adjusting ring 9 consist of a sliding link 17 rigidly connected to the adjusting ring 9, which is advantageously designed as a cylinder segment, as in FIG. 1 and 3 can be seen.
  • the sliding link 17 is connected to the adjusting ring 9 via a transmission ring 18 and ridges 19 in the form of cylindrical segments.
  • a guide slot 20 which is inclined with respect to the burner axis 1 'and in which a guide pin 21 of an actuating rod 22 engages.
  • the actuating rod 22 is slidably mounted within the primary air duct 6 in the direction 23a of the burner axis 1 '.
  • the movement of the actuating rod 22 can be initiated from outside the burner 1, which is not shown in the figures here.
  • the guide pin 21 is moved along the guide slot 20. Since the actuating rod 22 is rigid and can only be moved in the burner axis 1 ', the sliding link 17 executes a rotary movement 23b about the burner axis 1', which is transmitted to the adjusting ring 9, which in turn deflects the flexible tubes 8 like a helix.
  • adjusting means can also be used for the adjusting ring 9.
  • the swirl generating device according to the invention is of course not limited to multi-fuel burners, but can also be used to advantage with single-fuel burners.

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)
EP94890172A 1993-10-20 1994-10-14 Brûleur Withdrawn EP0650012A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2114/93 1993-10-20
AT211493A ATA211493A (de) 1993-10-20 1993-10-20 Brenner

Publications (1)

Publication Number Publication Date
EP0650012A1 true EP0650012A1 (fr) 1995-04-26

Family

ID=3528069

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94890172A Withdrawn EP0650012A1 (fr) 1993-10-20 1994-10-14 Brûleur

Country Status (2)

Country Link
EP (1) EP0650012A1 (fr)
AT (1) ATA211493A (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998040668A1 (fr) 1997-03-07 1998-09-17 F L Smidth & Co. A/S Procede et bruleur pour l'introduction de combustible dans un four
DE19925875A1 (de) * 1999-06-07 2000-12-14 Krupp Polysius Ag Rohrförmiger Brenner für Industrieöfen
DE102005053819A1 (de) * 2005-11-11 2007-05-16 Khd Humboldt Wedag Gmbh Drehofenbrenner
WO2010132911A2 (fr) * 2009-05-19 2010-11-25 Unitherm Cemcon Feuerungsanlagen Gesellschaft M.B.H. Dispositif d'ajustement du tourbillonnement pour un brûleur
WO2013091634A1 (fr) 2011-12-23 2013-06-27 Flsmidth A/S Procédé et brûleur pour introduire un combustible dans une zone de combustion d'un four
WO2014187591A1 (fr) * 2013-05-20 2014-11-27 Kiln Flame Systems Limited Brûleur
DE102014105166B3 (de) * 2014-03-12 2015-08-06 Max Weishaupt Gmbh Drallerzeuger für einen Brenner sowie damit versehene Mischeinrichtung und damit versehener Brenner
US10760785B2 (en) 2014-11-07 2020-09-01 Metso Minerals Oy Burner

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB609135A (en) * 1946-03-06 1948-09-27 William Lelgemann Improvements in or relating to fluid fuel burners
DE1254800B (de) * 1958-02-10 1967-11-23 Karoly Peredi Dipl Ing Dr OElvergasungs-Zerstaeubungsbrenner
WO1990012987A1 (fr) * 1989-04-21 1990-11-01 Siemens Aktiengesellschaft Dispositif d'amenee de combustibles et d'additifs a des installations de combustion
WO1994021963A1 (fr) * 1993-03-25 1994-09-29 Anton Novotny Dispositif de regulation du tourbillonnement de l'air et des gaz de combustion dans des bruleurs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB609135A (en) * 1946-03-06 1948-09-27 William Lelgemann Improvements in or relating to fluid fuel burners
DE1254800B (de) * 1958-02-10 1967-11-23 Karoly Peredi Dipl Ing Dr OElvergasungs-Zerstaeubungsbrenner
WO1990012987A1 (fr) * 1989-04-21 1990-11-01 Siemens Aktiengesellschaft Dispositif d'amenee de combustibles et d'additifs a des installations de combustion
WO1994021963A1 (fr) * 1993-03-25 1994-09-29 Anton Novotny Dispositif de regulation du tourbillonnement de l'air et des gaz de combustion dans des bruleurs

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998040668A1 (fr) 1997-03-07 1998-09-17 F L Smidth & Co. A/S Procede et bruleur pour l'introduction de combustible dans un four
DE19925875A1 (de) * 1999-06-07 2000-12-14 Krupp Polysius Ag Rohrförmiger Brenner für Industrieöfen
DE102005053819A1 (de) * 2005-11-11 2007-05-16 Khd Humboldt Wedag Gmbh Drehofenbrenner
WO2007054271A1 (fr) * 2005-11-11 2007-05-18 Khd Humboldt Wedag Gmbh Bruleur de four rotatif
US8449292B2 (en) 2005-11-11 2013-05-28 Khd Humboldt Wedag Gmbh Rotary furnace burner
WO2010132911A2 (fr) * 2009-05-19 2010-11-25 Unitherm Cemcon Feuerungsanlagen Gesellschaft M.B.H. Dispositif d'ajustement du tourbillonnement pour un brûleur
WO2010132911A3 (fr) * 2009-05-19 2011-12-01 Unitherm Cemcon Feuerungsanlagen Gesellschaft M.B.H. Dispositif d'ajustement du tourbillonnement pour un brûleur
WO2013091634A1 (fr) 2011-12-23 2013-06-27 Flsmidth A/S Procédé et brûleur pour introduire un combustible dans une zone de combustion d'un four
WO2014187591A1 (fr) * 2013-05-20 2014-11-27 Kiln Flame Systems Limited Brûleur
GB2517111A (en) * 2013-05-20 2015-02-11 Kiln Flame Systems Ltd Burner
GB2517111B (en) * 2013-05-20 2015-09-30 Kiln Flame Systems Ltd Burner having independently rotatable gas nozzles
CN105339735A (zh) * 2013-05-20 2016-02-17 炉火系统有限公司 燃烧器
EP2999924B1 (fr) 2013-05-20 2018-07-11 Kiln Flame Systems Limited Brûleur
US10094557B2 (en) 2013-05-20 2018-10-09 Kiln Flame Systems Limited Burner
DE102014105166B3 (de) * 2014-03-12 2015-08-06 Max Weishaupt Gmbh Drallerzeuger für einen Brenner sowie damit versehene Mischeinrichtung und damit versehener Brenner
US10760785B2 (en) 2014-11-07 2020-09-01 Metso Minerals Oy Burner

Also Published As

Publication number Publication date
ATA211493A (de) 1996-07-15

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