EP0849526B1 - High heat release burner - Google Patents

High heat release burner Download PDF

Info

Publication number
EP0849526B1
EP0849526B1 EP97121553A EP97121553A EP0849526B1 EP 0849526 B1 EP0849526 B1 EP 0849526B1 EP 97121553 A EP97121553 A EP 97121553A EP 97121553 A EP97121553 A EP 97121553A EP 0849526 B1 EP0849526 B1 EP 0849526B1
Authority
EP
European Patent Office
Prior art keywords
chamber
burner according
stem
sleeve
outlet
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
EP97121553A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0849526A3 (en
EP0849526A2 (en
Inventor
Mauro Poppi
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.)
IPEG SpA dell'Ing Mauro Poppi
Original Assignee
IPEG SpA dell'Ing Mauro Poppi
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 IPEG SpA dell'Ing Mauro Poppi filed Critical IPEG SpA dell'Ing Mauro Poppi
Publication of EP0849526A2 publication Critical patent/EP0849526A2/en
Publication of EP0849526A3 publication Critical patent/EP0849526A3/en
Application granted granted Critical
Publication of EP0849526B1 publication Critical patent/EP0849526B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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 
    • F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
    • F23C5/02—Structural details of mounting
    • F23C5/06—Provision for adjustment of burner position during operation
    • 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 
    • F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
    • 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
    • F23D14/24—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 at least one of the fluids being submitted to a swirling motion
    • 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
    • F23C2900/03005—Burners with an internal combustion chamber, e.g. for obtaining an increased heat release, a high speed jet flame or being used for starting the combustion

Definitions

  • the present invention relates to a high- or low-speed high heat release burner comprising the features of the preamble of claim 1.
  • a burner is known from US-A-5 513 981.
  • High heat release burners are known in which a good fuel-comburent mixing allows to reduce the volume of the combustion chamber to values on the order of 40,000 kcal/dm 3 hour, which have replaced conventional gaseous-fuel burners, for which said volume had values on the order of 500 kcal/dm 3 hour.
  • These burners have allowed, for example when used in kilns for ceramic products, to arrange in the kiln a plurality of burners whose selective activation allows to optimize, inside the kiln, the temperature distribution according to the type of product to be fired.
  • the fuel and the comburent are injected in the combustion chamber in a premixed state (or are mixed during injection) and ignited by a specifically provided spark.
  • the ignition point which substantially coincides with the fuel-air mixing region, is fixed and the combustion products undergo an expansion which is linked to the temperature that develops in the combustion chamber.
  • the outlet temperature and speed of the combustion products depend on the state of advancement of the combustion in the chamber; in other words, on whether the volume of the chamber is such as to allow to complete combustion inside it or is instead insufficient, causing combustion to also occur after discharge from the chamber: in the first case, one has a high outlet speed of the fumes at high temperature, while in the second case one has a reduced speed of the products of the (partial) combustion at a lower temperature.
  • Each one of the conventional high heat release burners has specific characteristics for the outlet speed of the combustion products which depend on the shape, dimensions and characteristics of the outlet cone and on the location of the ignition-mixing unit. If it is wished to vary the temperature distribution in the kiln in some regions, it is necessary to either act on the fuel and comburent supply or to replace the refractory cone or the burner. All these interventions require rather troublesome operations, sometimes entail the shutdown of the kiln and rather high costs.
  • the aim of the present invention is to obviate the mentioned drawbacks of conventional devices, i.e., to provide a high heat release burner which allows to control the speed and therefore the temperature of the combustion products in order to solve, with a single kind of burner, the different requirements of the different points of the kiln and to easily and quickly vary, even while the kiln is operating, the outlet speed characteristics of the combustion products, leaving unchanged the fuel and comburent supply.
  • an object of the present invention is to devise a structure which is simple, relatively easy to provide in practice, safe in use, effective in operation, and relatively modest in cost.
  • the reference numeral 1 generally designates a high heat release burner according to the invention.
  • the burner 1 is of the type which has a combustion chamber 2 which is advantageously but not exclusively made of refractory material with a frustum-shaped converging outlet end 3 which is connected to a gaseous-fuel intake 4 and to a comburent intake 5 and inside which there is provided an ignition plug 6: the expression "gaseous fuel” also includes liquid fuels that are finely micronized, possibly in air.
  • the chamber 2 preferably has a substantially longitudinally elongated shape and a flanged mouth 7 for fastening, by means of a plurality of perimetric bolts 7a, with a sealing ring 8 interposed, between a ring 9 which is fixed to the wall 10 of the kiln with screws 11 and a front flange 12, with corresponding pluralities of holes 12a, of a comburent air feed coupling 13.
  • the chamber 2 is internally provided with longitudinally adjustable supporting means 14 for a tubular stem 15 which constitutes a gaseous-fuel feed duct and is provided, at its end, with the ignition plug 6.
  • a tubular stem 15 which constitutes a gaseous-fuel feed duct and is provided, at its end, with the ignition plug 6.
  • the supporting means 14 are constituted by a sleeve 16 which has a flanged end 16a for fixing, by means of bolts 17, at a hole 18 of the coupling 13 which is axially aligned with the chamber 2.
  • the sleeve 16 is provided with locking elements 19 for a body 20 which can move longitudinally in the sleeve 16 and protrudes towards the inside of the chamber with the stem 15.
  • the supporting means 14 can be constituted by coupled segments of stems 15 equipped with respective and interchangeable ignition plugs 6 of different sizes.
  • the sleeve 16 and the movable body 20 are cylindrical and the locking elements 19 are of the type constituted by a bush with a tapering hole 21, which is associated, through radial spokes 22, with an annular actuation handwheel 23.
  • the bush 21 is screwed at the mouth of the sleeve 16, which has a profile 24 which can be correspondingly tapered and is adapted to cause, by means of the screwing of the bush 21, the clamping of sectors 24 into which the mouth of the sleeve is divided longitudinally on the movable body 20 in order to lock it.
  • a seat for mounting a sealing ring 25 is provided between the sleeve 16 and the movable body 20.
  • the tubular stem 15 is connected, by means of an elbow 26, to a deformable fuel gas feed hose 27 and is centrally crossed, along its entire length, by a rod that supports the ignition plug 6.
  • a finned washer 28 which ends at a short distance from the inner wall of the chamber, causes turbulence and facilitates the mixing of air and fuel and the cooling of the inner surface of the refractory cone 3.
  • Figures 3 and 4 are views of an alternative embodiment of the chamber 2, which has, on two diametrically opposite sides of the end 3, two lateral outlets 29, 30 which are arranged at right angles to the longitudinal axis of the chamber 2.
  • the lateral outlets are provided at an angle which can vary between 0 and 90 degrees with respect to the longitudinal axis of the chamber 2 according to the type of product to be fired.
  • the handwheel 23 By acting on the handwheel 23 for locking and release, it is possible to manually slide the stem 15 inside the chamber 2 to move the end of the stem, with the corresponding ignition plug 6 and washer 28, from a forward position, shown in solid lines in the figure, to a retracted position, shown in dotted lines. Since combustion occurs downstream of the ignition region, the movement of the stem in practice is equivalent to a change in the volume of the combustion chamber. When the stem is in a forward position, the outlet speed of the combustion products is reduced; when the stem is retracted, the fume speed is high.
  • the stem can be moved inside the chamber even while the kiln is operating.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
EP97121553A 1996-12-20 1997-12-08 High heat release burner Expired - Lifetime EP0849526B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMO960168 1996-12-20
IT96MO000168A IT1287521B1 (it) 1996-12-20 1996-12-20 Bruciatore intensivo

Publications (3)

Publication Number Publication Date
EP0849526A2 EP0849526A2 (en) 1998-06-24
EP0849526A3 EP0849526A3 (en) 1999-07-07
EP0849526B1 true EP0849526B1 (en) 2002-05-08

Family

ID=11386197

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97121553A Expired - Lifetime EP0849526B1 (en) 1996-12-20 1997-12-08 High heat release burner

Country Status (8)

Country Link
EP (1) EP0849526B1 (zh)
CN (1) CN1185562A (zh)
BR (1) BR9706432A (zh)
DE (1) DE69712452T2 (zh)
ES (1) ES2174170T3 (zh)
ID (1) ID19251A (zh)
IT (1) IT1287521B1 (zh)
PT (1) PT849526E (zh)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1304946B1 (it) * 1998-12-30 2001-04-05 Ipeg Spa Dell Ing Mauro Poppi Gruppo di alimentazione dell'aria di combustione per bruciatoreintensivo
RU2014144438A (ru) * 2012-04-03 2016-05-27 Эклипс, Инк. Способ и устройство для двухрежимной горелки с низким уровнем выбросов оксидов азота
CN102721060B (zh) * 2012-07-12 2014-12-03 穆瑞力 高效节能陶瓷窑炉燃烧器
CN104296137B (zh) * 2013-07-19 2016-10-26 湖南水口山有色金属集团有限公司 一种燃烧器
EP3336428B1 (fr) * 2016-12-15 2021-02-17 Fives Pillard Bruleur procédé bas nox
CN109000225A (zh) * 2018-08-27 2018-12-14 东平中联美景水泥有限公司 一种水泥窑燃烧器智能往复调整装置及其应用

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3387784A (en) * 1966-10-27 1968-06-11 Chemetron Corp Burner for fluid fuels
BE755352A (nl) * 1969-09-05 1971-03-01 Shell Int Research Verbrandingsinrichting voor gasvormige brandstof
DE2237248A1 (de) * 1972-07-28 1974-02-07 Airco Inc Strahlrohrbrenner und verfahren fuer die flammenformsteuerung desselben
GB2133527B (en) * 1983-01-18 1986-04-09 W B Combustion Ltd Radiant tube for gas burner
DE3422229C2 (de) * 1984-06-15 1986-06-05 WS Wärmeprozesstechnik GmbH, 7015 Korntal-Münchingen Industriebrenner für gasförmige oder flüssige Brennstoffe
WO1987002756A1 (en) * 1985-10-31 1987-05-07 Nihon Nensho System Kabushiki Kaisha Radiant tube burner
US5513981A (en) * 1991-11-22 1996-05-07 Aichelin Gmbh Burner with variable volume combination chamber
US5411393A (en) * 1993-01-04 1995-05-02 Southwire Company Premix burner for furnace with gas enrichment

Also Published As

Publication number Publication date
ES2174170T3 (es) 2002-11-01
ITMO960168A1 (it) 1998-06-20
DE69712452T2 (de) 2002-08-29
EP0849526A3 (en) 1999-07-07
CN1185562A (zh) 1998-06-24
ID19251A (id) 1998-06-28
EP0849526A2 (en) 1998-06-24
ITMO960168A0 (it) 1996-12-20
DE69712452D1 (de) 2002-06-13
BR9706432A (pt) 1999-04-13
IT1287521B1 (it) 1998-08-06
PT849526E (pt) 2002-10-31

Similar Documents

Publication Publication Date Title
US4474120A (en) Method for at least the two-stage ignition of a fuel dust power burner and a burner system for carrying out this method
CA1264654A (en) Gas heating system for dehydrators and the like
US4673350A (en) Burner assembly for radiant tube heating system
CA2272270C (en) Method and burner for introducing fuel to a kiln
US5125227A (en) Movable combustion system for a gas turbine
EP0849526B1 (en) High heat release burner
US2518364A (en) Direct fired air heater
EP1783426B1 (en) Combustion head for a gas burner
US4780077A (en) Flame retention head assembly for fuel burners
US6793487B2 (en) Binary burner with Venturi tube fuel atomization and Venturi jets for the atomization of liquid fuel
US5513981A (en) Burner with variable volume combination chamber
US3154134A (en) Variable flame type gas burner
US6220852B1 (en) Variable exit high velocity burner
US5344310A (en) Burner for an industrial furnace
US5107776A (en) Multiple adjustment cyclone burner
US20100307391A1 (en) Pulverized fuel burner
US4600377A (en) Refractoriless liquid fuel burner
US3989443A (en) Multiple fuel burner and usage in rotary kilns
US3361185A (en) Gas burners
US4982565A (en) Pilot burner for a device for burning solids in the exhaust gas of internal combustion engines
US4197076A (en) Forced draft burner
US3232542A (en) Oil burner
KR102523622B1 (ko) 연료 가변형 산업용 열풍기
US20230228413A1 (en) Distribution ring for fuel in a burner, burner having such a distribution ring and drying drum having such a burner
GB2123946A (en) Flat flame burner

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE ES FR GB IT PT

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 19991019

AKX Designation fees paid

Free format text: DE ES FR GB IT PT

17Q First examination report despatched

Effective date: 20000921

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT PT

REF Corresponds to:

Ref document number: 69712452

Country of ref document: DE

Date of ref document: 20020613

ET Fr: translation filed
REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20020724

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2174170

Country of ref document: ES

Kind code of ref document: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021208

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20030211

GBPC Gb: european patent ceased through non-payment of renewal fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20031209

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20031219

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20031230

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20040217

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041209

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050608

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050831

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

Effective date: 20050608

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051208

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20041209