EP2369230A2 - Brûleur doté d'un coude d'admission tangentiel à spirale - Google Patents

Brûleur doté d'un coude d'admission tangentiel à spirale Download PDF

Info

Publication number: EP2369230A2
Authority: EP; European Patent Office
Prior art keywords: fuel; burner; core tube; section; tube
Prior art date: 2010-03-22
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

EP11153325A

Other languages

German (de)

English (en)

Other versions

EP2369230B1 (fr

EP2369230A3 (fr

Inventor

Alfons Leisse

Dieter Lasthaus

Jürgen Niesbach

Tanja Weirich

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.)

Mitsubishi 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.)

2010-03-22

Filing date

2011-02-04

Publication date

2011-09-28

2010-07-02 Priority claimed from DE102010030904.4A external-priority patent/DE102010030904B4/de

2011-02-04 Application filed by Hitachi Power Europe GmbH filed Critical Hitachi Power Europe GmbH

2011-02-04 Priority to SI201130658T priority Critical patent/SI2369230T1/sl

2011-02-04 Priority to PL11153325T priority patent/PL2369230T3/pl

2011-09-28 Publication of EP2369230A2 publication Critical patent/EP2369230A2/fr

2013-03-06 Publication of EP2369230A3 publication Critical patent/EP2369230A3/fr

2015-08-12 Application granted granted Critical

2015-08-12 Publication of EP2369230B1 publication Critical patent/EP2369230B1/fr

2015-11-09 Priority to HRP20151195TT priority patent/HRP20151195T1/hr

Status Active legal-status Critical Current

2031-02-04 Anticipated expiration legal-status Critical

Links

Images

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
- 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
- F23C7/004—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion using vanes
- F23C7/006—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion using vanes adjustable
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2201/00—Burners adapted for particulate solid or pulverulent fuels
- F23D2201/10—Nozzle tips
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2201/00—Burners adapted for particulate solid or pulverulent fuels
- F23D2201/20—Fuel flow guiding devices

Definitions

the invention is directed to a burner having a core tube and a fuel tube concentrically arranged to form an annular fuel delivery cross section.
the invention is directed to a method of combustion of particulate fuel in a burner having a core tube and a concentrically arranged about forming a circular fuel delivery cross section fuel tube, wherein the burner supplied to the fuel in the form of a fluid with high fuel loading, then within the burner along the fuel delivery cross section conveyed twisted and oxidized in the mouth area of the burner with oxygen.
burners For the combustion of pulverized coal, in particular lignite dust, burners have been developed, which have a pipe designated as a core air tube or core tube with concentrically arranged around it dust tube or fuel tube, the dust tube or fuel tube to the core air tube or core tube forms an annular fuel delivery cross section, in which a loaded with the coal dust fluid is conveyed to the burner mouth. The pyrolysis and oxidation of the fuel then takes place at the burner mouth, whereby a low NOx combustion is also still provided the stepped supply of secondary air and / or tertiary air.
a secondary air tube and a tertiary air tube with a corresponding Sekundär Kunststoff felicitquerêt and Tertiär Kunststoff devisquerrough are formed on such a burner concentric to a core air tube and a dust tube.
Over in the fuel delivery section trained swirler is loaded with the coal dust loaded fluid in a swirl flow.
Such a burner is from the EP 0 756 134 A1 known.
the invention is therefore based on the object to provide a solution that allows a complete dissolution of sealant or Dichtstromsträhen of the fuel in to achieve the burner and a uniform fuel distribution on and in the annular fuel delivery of the fuel pipe.
this object is achieved in that the fuel tube fuel inlet side has a tangential spiral inlet manifold, the free conveyor cross section extends in an outgoing from a tangential feed area, spirally guided around the core tube conveyor channel, wherein the Extend expansion of the conveyor channel in the course of its spiral extension by reducing its extension in both the radial and in the axial direction decreases.
this object is achieved in that the swirl flow is generated by the fact that the loaded with the fuel fluid tangentially supplied to a tangential spiral inlet manifold and in this along a spiral extending around the core tube and itself from the inlet side to the outlet side in both the radial and in the axial direction decreasing conveyor channel with an axial transition into an inlet cone, which opens into the fuel delivery cross section, is promoted.
This pronounced fuel distribution function of the intake manifold is thus achieved by supplying the high fuel laden fluid or fluid tangentially to the tangential helical intake manifold and forming its further flow path from a free flow cross-section disposed in a flow channel that spirals around the core tube winds, wherein the cross-sectional channel in its spiral shape decreases in size by a radial and axial reduction of its axial and radial extent.
the invention provides in an embodiment that the delivery channel in the region of its spiral course in the axial direction merges into an inlet cone, the feed cross-section opens into the annular fuel delivery cross section. With the help of the inlet cone, the swirl flow of the highly fuel-laden fluid is selectively and smoothly fed to the annular fuel feed cross section.
a particularly good and uniform swirl flow and a particularly good resolution of dense flow strands can be achieved according to a further embodiment of the invention in that along the spiral course of the conveying channel in the radial and axial direction continuously extending fraudritessverring ceremonies is formed.
the continuity of the reduction or reduction of the delivery channel in the sense of a continuous reduction in both the radial and in the axial direction leads to a uniform increase in the flow resistance in the channel with a correspondingly uniform outflow of the fuel-laden fluid in the axial direction in the direction of the connected annular fuel delivery cross section.
the invention further provides that on the outside of the core tube at least one extending in the burner longitudinal direction, web-shaped screw winding or spiral winding is formed.
a web-shaped spiral winding or spiral winding then conducts the fuel-laden fluid and the fuel particles in a spiral or helical shape over the outside of the core tube and thus in the annular ring Fuel conveying cross section. It is particularly expedient in this case if the web of the at least one worm winding or spiral winding with respect to the burner longitudinal axis has a slope between 0 ° and 45 ° in the radial direction.
the homogenization of the fuel distribution over the annular fuel feed cross section can be further improved and supported.
the particulate fuel is specifically directed to a formed in the outlet of the fuel nozzle stabilizing ring, which then causes an abrupt deceleration of the flow velocity of the fuel particles, so that the pyrolysis can be initiated at this point.
the number, length and number of turns of the worm windings or spiral windings on the outside of the core tube are determined depending on the type and nature of the fuel.
Pyrolysis and combustion can be improved in a further development of the invention by means of a burner outlet side arranged on the core tube, axially along the burner axis adjustable core tube nozzle improve what the invention also provides.
the axial adjustability of the core tube nozzle makes it possible to achieve the intensity of the mixing between the fuel and the pyrolysis gas on the one hand and the oxygen which is necessarily supplied to the combustion mainly via the core tube on the other hand.
the axial adjustability of the core tube nozzle can be structurally favorably realized in particular by the fact that the core tube nozzle is guided telescopically in the core tube, whereby the invention is also distinguished.
the burner is suitable for use in which the fuel is applied as part of a dense phase conveying or by means of a highly fuel-laden fluid.
the invention is therefore further distinguished by the fact that the tangential feed region is connected to a particle-like fuel-supplying line, the loading of the fluid or medium conveyed in the line with fuel having between 0.5 kg fuel / kg medium and 15 kg fuel / kg conveying medium .
fuel dried or ground coal (anthracite, hard coal, lignite, hard lignite, peat), dusty or particulate biomass of different nature, or any type of carbonaceous, particulate, especially dusty, fuel can be used.
These fuels can be used individually, but also in any mixture and combination with each other.
Air, inert gas, flue gas or oxygen-enriched flue gas (oxy-fuel atmosphere) can be used as the pumped medium.
the burner is designed so that it can be used in incinerators operating at ambient air pressure lower than atmospheric or in pressurized systems with air and / or oxyfuel atmosphere, with fuel escape rates of 15 to 25 m / s.
the burner provides in a further embodiment that a secondary pipe with fluid connection and / or a tertiary pipe with fluid connection is arranged concentrically around the fuel pipe.
a secondary and tertiary tubes with optionally muzzle formed nozzles this required amount of oxygen as known from conventional burners supplied in particular to achieve a low NO x combustion.
the toothed stabilizing ring and the outside Fluidabweiskhlen in particular on the fuel tube, mouth side formed in the mouth region of the fuel nozzle. This is supported by the axially adjustable swirl devices respectively formed in the fluid conveying cross sections of the secondary tube and the tertiary tube, whereby the invention continues to be distinguished.
the invention finally provides that the fuel-laden fluid is conveyed to maintain the swirl flow in the fuel delivery cross section along at least one web-shaped screw winding or spiral winding extending outside the burner longitudinal direction on the core tube.
the invention further provides that the core tube nozzle is connected to two longitudinally axially arranged in the core tube spindle rods, which led to the core tube nozzle opposite side of the core tube out of this and are formed there operable.
the Indian Fig. 1 A burner designated as a whole by 1 comprises in the core a core tube 2, which can be acted upon via a connection 3 with an oxygen carrier required for the combustion of fuel in the burner.
Concentrically around the core tube 2 around a fuel tube 4 is arranged such that between the core tube 2 and the fuel tube 4, an annular fuel feed cross section 5 is formed.
the fuel delivery cross section 5 can be supplied with a fluid laden with fuel via a connecting line, not shown.
the tangential spiral inlet elbow 6 has a channel-shaped tangential feed region 7, which merges into a conveyor channel 9 that spirals around and / or extends around a cylindrical diameter 8.
the extension of the conveying channel 9 decreases in the axial direction, starting from a large width in the tangential feed region 7 always narrowing into an end portion 10.
the radial extent of the conveying channel 9 decreases starting from the tangential feed portion 7 to the end portion 10, like this Fig. 3 is apparent.
the extension of the conveyor channel 10 thus decreases in the course of the helical extent both in the radial and in the axial direction, so that the free conveying cross section within the conveyor channel 10 accordingly is reduced and the delivery channel 9 tapers to the end portion 10 to quasi.
At its inner circumferential edge region 11 of the delivery channel 9 is in an adjoining in the axial direction of inlet cone 12 over.
the inlet cone 12 opens into the annular fuel-conveying cross-section 5.
an attached pipe flange 16 in Fig. 2 Dashed tube shown core tube 2 arranged. Concentric to this is at the mouth opening 15 to form the circular fuel conveying cross section 5 in Fig. 2 dotted indicated fuel pipe 4 arranged.
a fuel nozzle 17 is arranged on the fuel tube 4, which has a radially inwardly projecting, tooth-shaped stabilizing ring 18. On the outside, an outwardly facing Abweiskehle 19 is formed.
the core tube 2 has on its outer side in the embodiment three extending in the burner longitudinal direction, web-shaped spiral windings 20a, 20b, 20c, whose respective web inclined at an angle of about 20 ° with respect to the burner longitudinal axis rising from the Outer peripheral surface of the core tube 2 protrudes.
Burner exit side is in the core tube 2 arranged in the axial direction and telescopically guided in the core tube 2 nozzle or core tube nozzle 21.
spindle rods 22, 23 are mounted on the front cover 24 of the core tube 2 such that they can be adjusted from the outside by hand or by means of automatic drives for axial displacement of the nozzle 21 here.
a secondary conveying cross-section 26 Concentrically around the core tube 2 and the fuel tube 4 around a secondary tube 25 is further arranged to form a secondary conveying cross-section 26.
longitudinally adjustable swirl devices 27 are arranged.
a tertiary tube 28 or a tertiary nozzle is arranged on the burner 1 concentrically to the core tube 2, to the fuel tube 4 and to the secondary tube 25.
this tertiary tube 28 or this tertiary nozzle forms a Tertiär swirl devices 30 are arranged.
the secondary tube 25 and the tertiary tube 28 are each connected via a radial or tangential inlet housing 30a, 30b with air or oxyfuel atmosphere, ie. H. with flue gas or oxygen-enriched flue gas to act upon.
air or oxyfuel atmosphere ie. H. with flue gas or oxygen-enriched flue gas to act upon.
an ignition device 31 Centrally in the core tube 2 is an ignition device 31 as known from conventional burners.
the fuel pipe 4 terminates at a distance from the core tube 2 and the stabilizing ring 18, so that the burner is set up such that the definition of the ignition process, ie the definition of the ignition point and the ignition conditions, by the adjustment of the respective media and facilities by the annular fuel delivery cross section funded fuel can be set.
the stabilizing ring 18 of the funded fuel flow is slowed down, so that here run off the pyrolysis and can be selectively influenced. It is possible to influence the ignition conditions decisive for pyrolysis, such as fuel concentration, heat transfer and reaction time, and to adjust them in a targeted manner.

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Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Combustion & Propulsion (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Combustion Of Fluid Fuel (AREA)
Feeding And Controlling Fuel (AREA)
Cyclones (AREA)
Branch Pipes, Bends, And The Like (AREA)

EP11153325.3A 2010-03-22 2011-02-04 Brûleur doté d'un coude d'admission tangentiel à spirale Active EP2369230B1 (fr)

Priority Applications (3)

Application Number	Priority Date	Filing Date	Title
SI201130658T SI2369230T1 (sl)	2010-03-22	2011-02-04	Gorilnik s tangencialnim spiralnim vstopnim kolenom
PL11153325T PL2369230T3 (pl)	2010-03-22	2011-02-04	Palnik ze stycznym spiralnym kolanem wejściowym
HRP20151195TT HRP20151195T1 (hr)	2010-03-22	2015-11-09	Plamenik s tangencijalnim spiralnim dovodnim koljenom

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE102010012376		2010-03-22
DE102010030904.4A DE102010030904B4 (de)	2010-07-02	2010-07-02	Brenner mit Tangential-Spiral-Eintrittskrümmer

Publications (3)

Publication Number	Publication Date
EP2369230A2 true EP2369230A2 (fr)	2011-09-28
EP2369230A3 EP2369230A3 (fr)	2013-03-06
EP2369230B1 EP2369230B1 (fr)	2015-08-12

Family

ID=44148898

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP11153325.3A Active EP2369230B1 (fr)	2010-03-22	2011-02-04	Brûleur doté d'un coude d'admission tangentiel à spirale

Country Status (8)

Country	Link
EP (1)	EP2369230B1 (fr)
DK (1)	DK2369230T3 (fr)
ES (1)	ES2550318T3 (fr)
HR (1)	HRP20151195T1 (fr)
PL (1)	PL2369230T3 (fr)
RS (1)	RS54419B1 (fr)
SI (1)	SI2369230T1 (fr)
ZA (1)	ZA201102067B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN103759258A (zh) *	2014-01-13	2014-04-30	徐州燃控科技股份有限公司	一种节油/气点火稳燃低氮旋流煤粉燃烧器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0756134A1 (fr)	1995-07-25	1997-01-29	Babcock Lentjes Kraftwerkstechnik GmbH	Procédé et brûleur pour la réduction de la production de NOx de la combustion de poussière de charbon
EP0756124A2 (fr)	1992-10-02	1997-01-29	Pall Corporation	Ensemble connecteur
EP2009351A2 (fr)	2007-06-28	2008-12-31	Hitachi Power Europe GmbH	Brûleur à charbon carbonisé destiné à l'allumage de combustible transporté dans un transport en phase dense

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1852531A (en) *	1929-11-18	1932-04-05	Otto A Kreutzberg	Fuel burner
US4326702A (en) *	1979-10-22	1982-04-27	Oueneau Paul E	Sprinkler burner for introducing particulate material and a gas into a reactor
US4334919A (en) *	1979-10-22	1982-06-15	Queneau Paul Etienne	Method of introducing particulate material and a gas into a reactor
US5211705A (en) *	1987-03-19	1993-05-18	Damper Design, Inc.	Apparatus and method for delivery of combustion air in multiple zones
DE19942769A1 (de) *	1999-09-08	2001-03-15	Bbp Energy Gmbh	Kohlenstaubbrenner

2011
- 2011-02-04 SI SI201130658T patent/SI2369230T1/sl unknown
- 2011-02-04 PL PL11153325T patent/PL2369230T3/pl unknown
- 2011-02-04 RS RS20150737A patent/RS54419B1/sr unknown
- 2011-02-04 DK DK11153325.3T patent/DK2369230T3/en active
- 2011-02-04 ES ES11153325.3T patent/ES2550318T3/es active Active
- 2011-02-04 EP EP11153325.3A patent/EP2369230B1/fr active Active
- 2011-03-18 ZA ZA2011/02067A patent/ZA201102067B/en unknown
2015
- 2015-11-09 HR HRP20151195TT patent/HRP20151195T1/hr unknown

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0756124A2 (fr)	1992-10-02	1997-01-29	Pall Corporation	Ensemble connecteur
EP0756134A1 (fr)	1995-07-25	1997-01-29	Babcock Lentjes Kraftwerkstechnik GmbH	Procédé et brûleur pour la réduction de la production de NOx de la combustion de poussière de charbon
EP2009351A2 (fr)	2007-06-28	2008-12-31	Hitachi Power Europe GmbH	Brûleur à charbon carbonisé destiné à l'allumage de combustible transporté dans un transport en phase dense

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN103759258A (zh) *	2014-01-13	2014-04-30	徐州燃控科技股份有限公司	一种节油/气点火稳燃低氮旋流煤粉燃烧器
CN103759258B (zh) *	2014-01-13	2016-06-15	徐州科融环境资源股份有限公司	一种节油/气点火稳燃低氮旋流煤粉燃烧器

Also Published As

Publication number	Publication date
DK2369230T3 (en)	2015-11-16
ZA201102067B (en)	2011-11-30
RS54419B1 (sr)	2016-04-28
ES2550318T3 (es)	2015-11-06
SI2369230T1 (sl)	2015-12-31
EP2369230B1 (fr)	2015-08-12
PL2369230T3 (pl)	2016-01-29
HRP20151195T1 (hr)	2015-12-04
EP2369230A3 (fr)	2013-03-06

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