EP0997686B1 - Vorrichtung zur thermischen Oxidation von flüssigen, festen oder gasförmigen Schlachthausrückständen - Google Patents

Vorrichtung zur thermischen Oxidation von flüssigen, festen oder gasförmigen Schlachthausrückständen Download PDF

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Publication number
EP0997686B1
EP0997686B1 EP99402660A EP99402660A EP0997686B1 EP 0997686 B1 EP0997686 B1 EP 0997686B1 EP 99402660 A EP99402660 A EP 99402660A EP 99402660 A EP99402660 A EP 99402660A EP 0997686 B1 EP0997686 B1 EP 0997686B1
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EP
European Patent Office
Prior art keywords
furnace
burner
axis
expressed
fats
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
EP99402660A
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English (en)
French (fr)
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EP0997686A1 (de
Inventor
Jean-Marie Pariel
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.)
Sa ds Group
Original Assignee
De Smet Engineering NV SA
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Filing date
Publication date
Application filed by De Smet Engineering NV SA filed Critical De Smet Engineering NV SA
Publication of EP0997686A1 publication Critical patent/EP0997686A1/de
Application granted granted Critical
Publication of EP0997686B1 publication Critical patent/EP0997686B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F23G5/008—Incineration of waste; Incinerator constructions; Details, accessories or control therefor adapted for burning two or more kinds, e.g. liquid and solid, of waste being fed through separate inlets
    • 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
    • F23G5/20—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having rotating or oscillating drums
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2202/00—Combustion
    • F23G2202/10—Combustion in two or more stages
    • F23G2202/103—Combustion in two or more stages in separate chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/12—Sludge, slurries or mixtures of liquids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/20—Medical materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/26—Biowaste
    • F23G2209/262—Agricultural waste
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2900/00—Special features of, or arrangements for incinerators
    • F23G2900/50007—Co-combustion of two or more kinds of waste, separately fed into the furnace
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2900/00—Special features of, or arrangements for incinerators
    • F23G2900/52001—Rotary drums with co-current flows of waste and gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2900/00—Special features of, or arrangements for incinerators
    • F23G2900/54402—Injecting fluid waste into incinerator

Definitions

  • the dehydration and conditioning of the flours produces fumes which are, in fact, the aqueous part of the charge collected in the form of vapor more or less charged with fats carbonated and in highly odorous volatile compounds.
  • This vapor phase represents approximately 40% of the initial weight and must be oxidized at high temperature.
  • Part of the fat is collected at the outlet of the cooker and another part, after extraction by pressing of the solid residue.
  • the solid phase partially dehydrated and defatted, represents 30 to 40% of the incoming charge. Insofar as it comes from contaminated animals declared unfit for recycling in the cattle food chain, it must be incinerated.
  • High calorific fats can be used as an auxiliary fuel in the heat treatment device.
  • the present invention is based on a oven incinerator type device according to the preamble of claim 1 as described in WO 89/12783.
  • the interior of the oven is lined with refractory products, bricks or concrete, to insulate the walls and resist high temperatures.
  • the hearth is rotated by means of rollers or by chain and gear.
  • Solid waste is introduced at the facade by screw or pusher. It's in also facade which are injected the liquid and gaseous effluents, as well as the combustion air.
  • the regular and continuous rotation of the furnace causes the mass of solid waste as soon as it introduction and during combustion in a permanent reversal movement, accompanied by mixing and fractionation of the mass which allows the waste to be exposed, permanently renewed, to the radiation of the refractory lining and to the combustion air, of which depends on the activation of combustion.
  • the present invention relates to a device for injecting combustion air, as well as other fluids, which leads to perfect control of the internal aerodynamics of the oven, allows a distribution of the oxygen in the air at the level of the solids load and thereby overcomes the drawbacks and defects of the known devices, linked, as indicated above, to a distribution random combustion air.
  • combustion is complete at the outlet of the rotary kiln and the negligible unburnt content, both in gases and in slag.
  • the device used consists of a multifluid member, hereinafter designated combustor, whose geometric and energetic characteristics as well as the positioning on the front of the oven constitute the material of the invention.
  • the combustor is presented as a multiple inlet and flow injection nozzle parallel, of the tube-in-tube type, which receives all the fluids admitted into the furnace separately, know: liquid or gaseous support fuel, liquid effluents, gaseous effluents, air atomization and combustion air, to inject them in a single jet, strictly flowing axial in the furnace.
  • liquid or gaseous support fuel liquid effluents, gaseous effluents, air atomization and combustion air, to inject them in a single jet, strictly flowing axial in the furnace.
  • the geometric characteristics of the combustor are dependent on those of the Rotary kiln; as will be explained below.
  • the axis of the combustor is offset from the axis of the rotary oven with a distance depending on the diameter of the oven and an angle related to the speed of rotation.
  • the device combines a succession of elements whose conjunction achieves the implementation work of the process, as indicated in Figures 1 and 2 attached.
  • FIG. 1 shows schematically the device of the invention in longitudinal section.
  • the rotary kiln (1) inclined at an angle ⁇ to the horizontal and of internal diameter D, is supplied on the front with solids to be incinerated by the screw (2) and with active fluids by the combustor (3). It opens at the other end into the fixed afterburner (4). Upstream, the solid residues (5) are brought into a storage (6), then distributed by a hopper recovery screw (7) to the screw (2).
  • the liquid effluents (8) are stored in the tank (9), then admitted by pumping to the fuel (3).
  • the combustor (3) also receives compressible fluids, such as: atomizing air (10), gaseous or mist effluents (11), combustion air (12).
  • the slag (13) is collected under the post-combustion chamber (4) and the combustion gases (14) escape at the top towards the treatment of the fumes.
  • Figure 2 shows schematically a front view, facade side, of the rotary kiln (1). It specifies the position of the burner (3) and the solid screw (2), as well as the direction of rotation of the oven (1).
  • the radial axis of the combustor (3) makes an angle ⁇ relative to the vertical, depending on the oven rotation speed (1).
  • this angle is close to 20 °.
  • the auxiliary fuel consists of animal fats with high calorific value, extracted during the flour making process.
  • the condition G ⁇ 60 W must be fulfilled, that is: G ⁇ 410 Newton.
  • the device can be used for other applications which are not outside the scope of the invention.
  • the device makes it possible to incinerate gaseous and liquid effluents simultaneously, some of these effluents with appreciable calorific value being able to be used as energy supply of support.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Processing Of Solid Wastes (AREA)

Claims (5)

  1. Umlaufende Ofenverbrennungsvorrichtung (1) zur Vernichtung von Rückständen in der Ausführung von Tiermehlen, Fetten und Kondensatdämpfen beziehungsweise Schwaden von Dehydratisierung, welche Folgendes aufweist:
    einen Brenner (3), der die Gesamtheit von solchen aktiven Fluiden erhält, wie zerstäubte Luft (10), Verbrennungsluft (12), Brennstoff zur möglichen Unterstützung, Abfallkondensate (11), Fette und Restflüssigkeiten (8), und diese in einem einzigen genauen axialen Strahl, der parallel zur Achse des Ofens (1) verläuft, in den umlaufenden Ofen (1) befördert;
    gekennzeichnet durch eine Schraube (2) zur kontinuierlichen Beschickung des Ofens (1) mit zerkleinerten festen Rückständen (5); und durch die axiale Triebkraft G des Brenners (3), ausgedrückt in Newton, welche mit der thermischen Leistungsfähigkeit W des Ofens (1), ausgedrückt in MW, durch die Beziehung G ≥ 60.W in Verbindung steht.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Ofen zylindrisch ausgebildet ist, und dass die Position des Brenners (3), festgelegt durch die Höhe H seiner horizontalen Achse über der Drehachse des Ofens (1) mit dem Innendurchmesser D, die Bedingung H = 0,3 D erfüllt.
  3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die radiale Achse des Brenners (3) einen Winkel β = 20° mit der vertikalen Achse bildet, wobei diese Achsen durch den Mittelpunkt der Vorderseite des Ofens (1) verlaufen.
  4. Feststehende Ofenverbrennungsvorrichtung (1) zur Vernichtung von Rückständen in der Ausführung von Fetten und Kondensatdämpfen beziehungsweise Schwaden von Dehydratisierung, gekennzeichnet durch einen Brenner (3), welcher die Gesamtheit von solchen aktiven Fluiden erhält, wie zerstäubte Luft (10), Verbrennungsluft (12), Brennstoff zur möglichen Unterstützung, Abfallkondensate (11), Fette und Restflüssigkeiten (8), und diese in einem einzigen genauen axialen Strahl, der parallel zur Achse des Ofens (1) verläuft, in den feststehenden Ofen (1) befördert, und durch die axiale Triebkraft G des Brenners (3), ausgedrückt in Newton, welche mit der thermischen Leistungsfähigkeit W des Ofens (1), ausgedrückt in MW, durch die Beziehung G ≥ 60.W in Verbindung steht.
  5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die radiale Achse des Brenners (3) einen Winkel β = 0° mit der vertikalen Achse bildet, wobei diese Achsen durch den Mittelpunkt der Vorderseite des Ofens (1) verlaufen.
EP99402660A 1998-10-30 1999-10-26 Vorrichtung zur thermischen Oxidation von flüssigen, festen oder gasförmigen Schlachthausrückständen Expired - Lifetime EP0997686B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9813676A FR2785366B1 (fr) 1998-10-30 1998-10-30 Dispositif pour le traitement par oxydation thermique de residus solides, liquides ou gazeux produits par les abattoirs et les unites d'equarrissage
FR9813676 1998-10-30

Publications (2)

Publication Number Publication Date
EP0997686A1 EP0997686A1 (de) 2000-05-03
EP0997686B1 true EP0997686B1 (de) 2004-09-29

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EP99402660A Expired - Lifetime EP0997686B1 (de) 1998-10-30 1999-10-26 Vorrichtung zur thermischen Oxidation von flüssigen, festen oder gasförmigen Schlachthausrückständen

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EP (1) EP0997686B1 (de)
AT (1) ATE278157T1 (de)
DE (1) DE69920625D1 (de)
FR (1) FR2785366B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1248041A3 (de) * 2001-04-04 2002-12-18 Adolfo Fernandez Mesa Verfahren zur thermischen Zersetzung
CN105716093B (zh) * 2016-03-14 2017-10-03 哈尔滨工业大学 一种可同时处理多形态危险废物的熔融装置
CN109708125A (zh) * 2019-02-14 2019-05-03 长沙中硅水泥技术开发有限公司 一种处理砷碱渣及低熔点重金属废渣组合式熔炼炉

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4797087A (en) * 1985-07-15 1989-01-10 American Combustion, Inc. Method and apparatus for generating highly luminous flame

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH409210A (de) * 1964-06-05 1966-03-15 Keller Otto Verbrennungsanlage für Abfallprodukte
DE1551845A1 (de) * 1967-07-01 1970-04-23 Keller Peukert Gmbh Drehtrommel-Muellverbrennungsanlage
FR2605715B1 (fr) * 1986-10-23 1989-12-01 Tunzini Nessi Entreprises Equi Dispositif d'incineration des dechets industriels
WO1989012783A1 (en) * 1988-06-17 1989-12-28 American Combustion, Inc. A method and apparatus for waste disposal
US5188042A (en) * 1991-04-18 1993-02-23 Praxair Technology, Inc. Fluid waste burner system
US5724901A (en) * 1995-11-02 1998-03-10 Gaz Metropolitan And Company Limited Oxygen-enriched gas burner for incinerating waste materials

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4797087A (en) * 1985-07-15 1989-01-10 American Combustion, Inc. Method and apparatus for generating highly luminous flame

Also Published As

Publication number Publication date
EP0997686A1 (de) 2000-05-03
ATE278157T1 (de) 2004-10-15
FR2785366A1 (fr) 2000-05-05
DE69920625D1 (de) 2004-11-04
FR2785366B1 (fr) 2001-02-23

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