EP1016822A1 - Distributeur d'air de combustion pour brûleur de four à haute émission de chaleur - Google Patents

Distributeur d'air de combustion pour brûleur de four à haute émission de chaleur Download PDF

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Publication number
EP1016822A1
EP1016822A1 EP99125334A EP99125334A EP1016822A1 EP 1016822 A1 EP1016822 A1 EP 1016822A1 EP 99125334 A EP99125334 A EP 99125334A EP 99125334 A EP99125334 A EP 99125334A EP 1016822 A1 EP1016822 A1 EP 1016822A1
Authority
EP
European Patent Office
Prior art keywords
chamber
hot air
combustion
valve
combustion air
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Withdrawn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
EP99125334A
Other languages
German (de)
English (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 EP1016822A1 publication Critical patent/EP1016822A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0033—Heating elements or systems using burners
    • 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
    • F23C7/008—Flow control devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L13/00—Construction of valves or dampers for controlling air supply or draught
    • F23L13/02—Construction of valves or dampers for controlling air supply or draught pivoted about a single axis but having not other movement
    • F23L13/04—Construction of valves or dampers for controlling air supply or draught pivoted about a single axis but having not other movement with axis perpendicular to face
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L3/00—Arrangements of valves or dampers before the fire
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00—Arrangements of controlling devices

Definitions

  • the present invention relates to a combustion air feeder for high heat release burner of kilns, particularly for ceramic products.
  • high heat release burners are known, and are the subject of Italian invention patent No. 1287521 in the name of the same Applicant, in which it is possible to adjust the speed, and therefore the temperature, of the combustion products so as to solve, with a single type of burner, the various requirements of the different points of the kiln and so as to be able to easily and rapidly vary, even while the kiln is operating, the emission speed characteristics of the combustion products while keeping the supply of fuel and comburent unchanged.
  • the aim of the present invention is to eliminate the above-noted drawbacks of conventional burners, providing a combustion air feeder for high heat release burner of kilns, particularly for ceramic products, which allows to provide a considerable energy saving and to ensure operation with combustion air at high temperature and without subjecting the outside environment and the normal structures of the kiln to abnormal conditions which would be difficult to tolerate.
  • an object of the present invention is to achieve the above-mentioned aim with a structure which is simple, relatively easy to provide in practice, safe in use, effective in operation and relatively low in cost.
  • the present combustion air feeder for high heat release burner of kilns, particularly for ceramic products of the type which comprises a combustion chamber in which a tubular stem for feeding fuel in gas form enters, the chamber being connected to a cold air pipe, characterized in that it comprises a first adjustable throttling valve which controls the pipe substantially at the inlet of the chamber, and a hot air duct in which the outlet is connected to the chamber downstream of the first valve, the hot air duct being provided with a second adjustable throttling valve, the coordinated adjustment of the valves being adapted to determine the flow-rate and/or temperature of the combustion air.
  • the reference numeral 1 generally designates a combustion air feeder which is installed in a high heat release burner 2 of a ceramic product kiln 3.
  • the outer part of the burner 2 is inserted in its normal external cold air supply circuit and is provided with the safety systems prescribed by the law.
  • the burner 2 is of the variable-configuration type and comprises a combustion chamber 4 which is connected to a cold air pipe 5 of an external supply circuit 6 and in which the tubular stem 7 of a respective duct 8 for feeding fuel in gas form enters.
  • the feeder 1 is constituted by a first adjustable throttling valve 9, which controls the pipe 5 substantially at the inlet of the chamber 4, and by a hot air duct 10 whose outlet 11 is connected to the chamber 4 and is arranged downstream of the first valve 9.
  • the duct 10 is arranged substantially at right angles to the chamber 4 and has a second adjustable throttling valve 12, whose adjustment, coordinated with the adjustment of the first valve 9, allows to determine the flow-rate and/or the temperature of the combustion air.
  • the first valve 9 comprises two flat rings 13 which are in mutual contact and are crossed by corresponding series of holes 14 distributed along a circumference; however, alternative embodiments are also possible.
  • the rotation of one of the rings 13 with respect to the other one determines the full or partial alignment and/or the closure of the holes 14 and allows to adjust the flow-rate of the cold air supply arriving from the external circuit 6.
  • the chamber 4 has a substantially elongated shape and is provided with longitudinally adjustable supporting means 15 for the tubular stem 7.
  • the means 15 are constituted by a sleeve 16, one end of which is fixed by means of bolts 17 at holes 18 of the sleeve 5a of the pipe 5.
  • the operation of the feeder 1 is as follows: inside the wall of the kiln 3, the duct 10, made of special material, conveys the hot air directly into the chamber 4 through the valve 12. By turning the ring 13 through a few degrees it is possible to cut out from the supply of the burner 2 the ambient-temperature air of the external circuit 6 which arrives from the pipe 5 and which ambient-temperature air reduced and kept under a slight pressure, keeps at ambient temperature all the outer parts of the burner.
  • the flame control and ignition systems are cooled by the cold air, while the comburent is exclusively hot air.
  • the duct 10 is provided inside the kiln 3 and its inlet 19 is connected proximate to one of the cooling regions of the kiln 3 which are located downstream of the product firing region: in this regard, three typical cooling regions can be identified.
  • the material that arrives from the firing region is cooled rapidly and directly; in the second region, the material is cooled slowly and indirectly; and in the third region, the material is cooled as quickly as possible with direct contact with ambient-temperature air until the exit temperature is reached.
  • the air that arrives from the second and third regions might instead be used for the direct heating of work environments; it is therefore extremely interesting to use as combustion air the air that arrives from the first region, although alternative solutions are also possible.
  • burners with the feeder according to the invention have no difficulty in operating with air at approximately 500°C as regards the combustion chamber, whose temperature can be kept controlled at acceptable values which are close to 1000°C.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
  • Furnace Details (AREA)
  • Gas Burners (AREA)
EP99125334A 1998-12-30 1999-12-20 Distributeur d'air de combustion pour brûleur de four à haute émission de chaleur Withdrawn EP1016822A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMO980267 1998-12-30
ITMO980267 IT1304946B1 (it) 1998-12-30 1998-12-30 Gruppo di alimentazione dell'aria di combustione per bruciatoreintensivo

Publications (1)

Publication Number Publication Date
EP1016822A1 true EP1016822A1 (fr) 2000-07-05

Family

ID=11386808

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99125334A Withdrawn EP1016822A1 (fr) 1998-12-30 1999-12-20 Distributeur d'air de combustion pour brûleur de four à haute émission de chaleur

Country Status (4)

Country Link
EP (1) EP1016822A1 (fr)
CN (1) CN1263229A (fr)
BR (1) BR9906014A (fr)
IT (1) IT1304946B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114110429A (zh) * 2021-11-30 2022-03-01 中冶焦耐(大连)工程技术有限公司 一种窑前天然气管道自动调节系统及其工作方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7699602B2 (en) * 2006-05-10 2010-04-20 Owens-Brockway Glass Container Inc. Glassware mold lubrication burner

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3868211A (en) * 1974-01-11 1975-02-25 Aqua Chem Inc Pollutant reduction with selective gas stack recirculation
DE2410795A1 (de) * 1974-03-07 1975-09-18 Tramm Johannes Sparbrenner
US4023921A (en) * 1975-11-24 1977-05-17 Electric Power Research Institute Oil burner for NOx emission control
US4060379A (en) * 1975-02-06 1977-11-29 Hague International Energy conserving process furnace system and components thereof
US4380429A (en) * 1979-11-02 1983-04-19 Hague International Recirculating burner
EP0204059A1 (fr) * 1985-06-03 1986-12-10 SSAB Svenskt Stal AB Procédé pour contrôler un progrès de combustion
US4708638A (en) * 1985-02-21 1987-11-24 Tauranca Limited Fluid fuel fired burner
EP0849526A2 (fr) * 1996-12-20 1998-06-24 IPEG S.p.A. dell'Ing. Mauro Poppi Brûleur à haute émission de chaleur

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3868211A (en) * 1974-01-11 1975-02-25 Aqua Chem Inc Pollutant reduction with selective gas stack recirculation
DE2410795A1 (de) * 1974-03-07 1975-09-18 Tramm Johannes Sparbrenner
US4060379A (en) * 1975-02-06 1977-11-29 Hague International Energy conserving process furnace system and components thereof
US4023921A (en) * 1975-11-24 1977-05-17 Electric Power Research Institute Oil burner for NOx emission control
US4380429A (en) * 1979-11-02 1983-04-19 Hague International Recirculating burner
US4708638A (en) * 1985-02-21 1987-11-24 Tauranca Limited Fluid fuel fired burner
EP0204059A1 (fr) * 1985-06-03 1986-12-10 SSAB Svenskt Stal AB Procédé pour contrôler un progrès de combustion
EP0849526A2 (fr) * 1996-12-20 1998-06-24 IPEG S.p.A. dell'Ing. Mauro Poppi Brûleur à haute émission de chaleur
IT1287521B1 (it) * 1996-12-20 1998-08-06 Ipeg Spa Bruciatore intensivo

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114110429A (zh) * 2021-11-30 2022-03-01 中冶焦耐(大连)工程技术有限公司 一种窑前天然气管道自动调节系统及其工作方法

Also Published As

Publication number Publication date
ITMO980267A1 (it) 2000-06-30
BR9906014A (pt) 2000-10-03
CN1263229A (zh) 2000-08-16
IT1304946B1 (it) 2001-04-05

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