EP0173628A2 - Ofen zur Verbrennung von Abfällen - Google Patents

Ofen zur Verbrennung von Abfällen Download PDF

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Publication number
EP0173628A2
EP0173628A2 EP85401691A EP85401691A EP0173628A2 EP 0173628 A2 EP0173628 A2 EP 0173628A2 EP 85401691 A EP85401691 A EP 85401691A EP 85401691 A EP85401691 A EP 85401691A EP 0173628 A2 EP0173628 A2 EP 0173628A2
Authority
EP
European Patent Office
Prior art keywords
combustion chamber
post
air
smoke
combustion
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
EP85401691A
Other languages
English (en)
French (fr)
Other versions
EP0173628B1 (de
EP0173628A3 (en
Inventor
Christian Gérard Huret
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT85401691T priority Critical patent/ATE46957T1/de
Publication of EP0173628A2 publication Critical patent/EP0173628A2/de
Publication of EP0173628A3 publication Critical patent/EP0173628A3/fr
Application granted granted Critical
Publication of EP0173628B1 publication Critical patent/EP0173628B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel 
    • F23L9/04—Passages or apertures for delivering secondary air for completing combustion of fuel  by discharging the air beyond the fire, i.e. nearer the smoke outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage

Definitions

  • the present invention relates to a process for the incineration of waste, as well as an incineration furnace for the implementation of this process.
  • the fuel consumption is significantly reduced, the dust entrainment is low and the fumes are little or not colored.
  • the combustion time is however significantly longer than in the first mode. In addition, there are sometimes unburnt remains due to the insufficient combustion temperature.
  • the present invention relates to a method which makes it possible to benefit from the advantages of the two above-mentioned operating modes, while avoiding their disadvantages.
  • the process which it relates is characterized in that it consists in subjecting the waste to be incinerated, in a combustion chamber, first to a pyrolysis carried out at a relatively low temperature in the presence of a small quantity. of air called "primary air", then combustion carried out at a high temperature in the presence of an excess of primary air.
  • the same combustion chamber can be used to carry out incineration according to a cycle in two main phases.
  • the present invention also relates to an incineration oven for the implementation of this process, this oven being of the type comprising a combustion chamber comprising a door for loading waste and means for introducing primary air into it, a sheath flue communicating with the combustion chamber and having means for preventing the passage of the dust entrained by the fumes as well as means for supplying a supplement r air said "secondary air”, and a post-combustion chamber connected to the combustion chamber by means of the smoke sheath, the post-combustion chamber comprising at least one burner and means for introducing a stream of combustion air called "tertiary air" into it.
  • the present invention proposes to remedy this drawback by providing an incineration oven in which the means for preventing the passage of dust are constituted by the means for supplying secondary air, which themselves are constituted by nozzles opening into the smoke duct in order to inject the secondary air therein against the current with respect to the direction of circulation of the smoke, the number and the spacing of the nozzles being such that the entire section of the smoke duct is interested in the secondary air curtain formed.
  • the secondary air injected into the flue gas duct enriches the fumes from the combustion chamber with oxygen, while preventing dust from entering the post-combustion chamber.
  • the respective directions of circulation of the secondary air and the fumes in the flue gas duct form an obtuse angle of between 100 ° and 140 °.
  • the post-combustion chamber and the smoke duct constitute an assembly mounted to pivot about the axis of the latter.
  • the incineration oven that can be seen in the drawings comprises a combustion chamber 1 furnished with insulating and refractory materials.
  • the combustion chamber is equipped with a burner 2 used to initiate or maintain the combustion of waste and nozzles 3 allowing the injection of primary air. It can be of parallelepipedic or cylindrical shape, its major axis being preferably horizontal.
  • a sealed loading door 4 allows waste to be introduced into the hearth 5.
  • the combustion fumes 6 are evacuated by passing through a smoke sheath 7 which is formed in the wall opposite to the loading door 4 and into which the secondary air is injected by a series of nozzles 8 oriented so that the secondary air jet forms an obtuse angle with the fumes.
  • the smoke duct 7 connects the combustion chamber 1 to a post-combustion chamber 9 which is cylindrical in shape and is lined with insulating and refractory materials.
  • the post-combustion chamber is of large volume so that the fumes stay there long enough to be completely oxidized and decomposed. Its volume is calculated so that the minimum residence time is 0.6 seconds.
  • At least one burner 11 is provided to bring or maintain the post-combustion chamber at a temperature sufficient to completely oxidize the fumes, destroy all the combustible particles and crack the organic molecules. This burner directs its flame tangentially into the post-combustion chamber.
  • Tertiary air intended to supply the necessary oxygen supplement and to entrain the fumes in a helical movement is injected into the post-combustion chamber 9 on the one hand by a series of nozzles 10 arranged along a generator and opening tangentially in the chamber 9, and on the other hand by a nozzle 12 opening axially at one of the ends of the post-combustion chamber.
  • the fumes entrained in the post- combustion in a helical movement are directed towards a chimney 13 provided at the other end of the post-combustion chamber. It will be noted here that the flow rate of the tertiary air injected through the nozzles 10 and 12 is adjustable.
  • the inclination of the main axis of the post-combustion chamber can be adjusted since the latter constitutes, with the smoke duct 7, an assembly mounted to pivot around the axis of said duct.
  • the oven according to the invention makes it possible to incinerate waste in two phases, these being subjected in the combustion chamber 1, first of all .pyrolysis carried out at a relatively low temperature in the presence of a small quantity of primary air, then combustion carried out at a high temperature in the presence of an excess of primary air.
  • the nozzles 8 projecting the secondary air prevent the dust formed in the combustion chamber 1 from going into the post-combustion chamber when the primary air flow is increased.
  • the secondary air is injected against the smoke: the directions of circulation of the secondary air and the smoke respectively in the smoke duct 7 form an obtuse angle preferably between 100 ° and 140 °.
  • the flow and speed of the secondary air and the repetition of the nozzles 8 are such that the air curtain thus created involves the entire section of the smoke duct.
  • the fumes leaving the combustion chamber 1 penetrate tangentially into the post-combustion chamber 9 which is lined with insulating and refractory materials and which is preferably produced with a large volume. They go towards the chimney 13, in a helical movement under the joint action of the tertiary air injected by the nozzles 10 and the nozzle 12 and the flame of the burner 11 which is oriented tangentially in the post-combustion chamber.
  • the incineration oven according to the invention is particularly suitable for the destruction without odors, visible smoke or nuisance, of all combustible waste and, in particular, household, hospital or industrial waste.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Incineration Of Waste (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
EP85401691A 1984-08-30 1985-08-28 Ofen zur Verbrennung von Abfällen Expired EP0173628B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85401691T ATE46957T1 (de) 1984-08-30 1985-08-28 Ofen zur verbrennung von abfaellen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8413625 1984-08-30
FR8413625A FR2569826B1 (fr) 1984-08-30 1984-08-30 Incinerateur-pyrolyseur

Publications (3)

Publication Number Publication Date
EP0173628A2 true EP0173628A2 (de) 1986-03-05
EP0173628A3 EP0173628A3 (en) 1987-09-02
EP0173628B1 EP0173628B1 (de) 1989-10-04

Family

ID=9307430

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85401691A Expired EP0173628B1 (de) 1984-08-30 1985-08-28 Ofen zur Verbrennung von Abfällen

Country Status (4)

Country Link
EP (1) EP0173628B1 (de)
AT (1) ATE46957T1 (de)
DE (1) DE3573464D1 (de)
FR (1) FR2569826B1 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2220255A (en) * 1988-05-13 1990-01-04 Heinz Hoelter A method of, and apparatus for cooling and keeping clean the roof of a coke oven
GB2227084A (en) * 1989-01-17 1990-07-18 Cbr Fabrications Limited Stove with afterburner
WO1991000476A1 (de) * 1989-07-05 1991-01-10 Norbert Harlander Feuerungsanlage für feste brennstoffe mit sekundärbrenner
FR2649782A1 (fr) * 1989-07-12 1991-01-18 Huret Christian Procede d'incineration et four pour sa mise en oeuvre
EP0426471A3 (en) * 1989-11-02 1991-10-09 Entech, Inc. Municipal waste thermal oxidation system
US5095829A (en) * 1989-11-07 1992-03-17 Nevels Leonardus M M Method for combusting multifarious waste material, and an oven to be used thereby
WO1998003250A1 (de) * 1996-07-18 1998-01-29 Hoelter Heinz Verfahren zur behandlung der in einer verbrennungsanlage für organische abfälle anfallenden abgase
US6439135B1 (en) * 1997-11-25 2002-08-27 International Environmental Technologies, Inc. Organic waste gasification processing and the production of alternative energy sources
US6938562B2 (en) 2002-05-17 2005-09-06 Senreq, Llc Apparatus for waste gasification

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4007581A1 (de) * 1990-03-09 1991-09-12 Ackermann Tech Anlagen Masch Brenneranordnung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2869487A (en) * 1955-08-25 1959-01-20 Silent Glow Oil Burner Corp Incinerators
FR2215678A2 (en) * 1965-12-01 1974-08-23 Lees Hall Et Sons Ltd Scrap metal recovery furnace - for burning off insulation from electric cables
US3664277A (en) * 1970-07-31 1972-05-23 Carborundum Co On-site incinerator
FR2213706A5 (de) * 1973-01-09 1974-08-02 Air Preheater
CH579237A5 (en) * 1973-06-01 1976-08-31 Barkhuus Per W Incinerator for domestic refuse - with preheated secondary air provided under pressure
US4213404A (en) * 1978-11-09 1980-07-22 Energy Alternatives, Inc. Solid refuse furnace

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2220255B (en) * 1988-05-13 1992-01-02 Heinz Hoelter A method of,and apparatus for cooling and keeping clean the roof of a coke oven
GB2220255A (en) * 1988-05-13 1990-01-04 Heinz Hoelter A method of, and apparatus for cooling and keeping clean the roof of a coke oven
GB2227084B (en) * 1989-01-17 1993-01-20 Cbr Fabrications Limited Wood waste burners
GB2227084A (en) * 1989-01-17 1990-07-18 Cbr Fabrications Limited Stove with afterburner
WO1991000476A1 (de) * 1989-07-05 1991-01-10 Norbert Harlander Feuerungsanlage für feste brennstoffe mit sekundärbrenner
FR2649782A1 (fr) * 1989-07-12 1991-01-18 Huret Christian Procede d'incineration et four pour sa mise en oeuvre
EP0426471A3 (en) * 1989-11-02 1991-10-09 Entech, Inc. Municipal waste thermal oxidation system
US5095829A (en) * 1989-11-07 1992-03-17 Nevels Leonardus M M Method for combusting multifarious waste material, and an oven to be used thereby
EP0486728A1 (de) * 1989-11-07 1992-05-27 Leonardus Mathijs Marie Nevels Verfahren zum Verbrennen von verschiedenen Abfallstoffen, ein Ofen zur Anwendung des Verfahrens sowie eine universelle Abfallverbrennungsanlage mit einer Mehrzahl von solchen Öfen
WO1998003250A1 (de) * 1996-07-18 1998-01-29 Hoelter Heinz Verfahren zur behandlung der in einer verbrennungsanlage für organische abfälle anfallenden abgase
AU736661B2 (en) * 1996-07-18 2001-08-02 Heinz Holter Process for treating waste gases produced in an organic waste incineration plant
US6439135B1 (en) * 1997-11-25 2002-08-27 International Environmental Technologies, Inc. Organic waste gasification processing and the production of alternative energy sources
US6938562B2 (en) 2002-05-17 2005-09-06 Senreq, Llc Apparatus for waste gasification

Also Published As

Publication number Publication date
EP0173628B1 (de) 1989-10-04
FR2569826A1 (fr) 1986-03-07
DE3573464D1 (en) 1989-11-09
FR2569826B1 (fr) 1989-06-16
EP0173628A3 (en) 1987-09-02
ATE46957T1 (de) 1989-10-15

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