EP0536268A1 - Procede et appareil d'incineration de divers types de dechets solides et eventuellement liquides. - Google Patents

Procede et appareil d'incineration de divers types de dechets solides et eventuellement liquides.

Info

Publication number
EP0536268A1
EP0536268A1 EP19910912557 EP91912557A EP0536268A1 EP 0536268 A1 EP0536268 A1 EP 0536268A1 EP 19910912557 EP19910912557 EP 19910912557 EP 91912557 A EP91912557 A EP 91912557A EP 0536268 A1 EP0536268 A1 EP 0536268A1
Authority
EP
European Patent Office
Prior art keywords
rotary kiln
waste material
slag
products
ash
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
EP19910912557
Other languages
German (de)
English (en)
Other versions
EP0536268B1 (fr
Inventor
Siegfried Binner
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.)
Volund Miljoteknik AS
Original Assignee
Volund Miljoteknik AS
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 Volund Miljoteknik AS filed Critical Volund Miljoteknik AS
Priority to AT91912557T priority Critical patent/ATE100559T1/de
Publication of EP0536268A1 publication Critical patent/EP0536268A1/fr
Application granted granted Critical
Publication of EP0536268B1 publication Critical patent/EP0536268B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
    • F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
    • 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
    • F23G5/006—General arrangement of incineration plant, e.g. flow sheets
    • 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
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/085—High-temperature heating means, e.g. plasma, for partly melting the waste

Definitions

  • the present invention relates to a method of the kind set forth in the preamble of claim 1.
  • the temperature of combustion is held below 1100 ⁇ C, e.g. at approximately 875°C, in order to avoid the formation of liquid slag at the side walls of the grate section and in the rotary kiln, this slag having a tendency to solidify at the sides of the furnace and obstruct the exit end of the rotary kiln.
  • boiler ash is obtained from the boiler assembly, e.g. being of the impact-descaling type, and fly ash from an electrical filter.
  • flue-gas cleaning is performed by adding e.g. lime, after which the flue gas passes through a filter or a flue-gas washing arrangement, in which a residual product is separated out.
  • This incineration of waste material can be carried out in a plant, in which types of waste material being fed in, possibly through a number of feeding arrange- ments, are dried, ignited, and combusted.
  • the solid waste material is burnt to form a not completely burnt-out slag, the latter being plunged into a rotary kiln in direct-line communication with the grate section, in which rotary kiln this slag mixture and the separately fed residual products from the flue-gas cleaning arrangement are fused together so as to form a glass-like mass.
  • the rotation of the rotary kiln enhances the burning-out and fusing of the mass to form a homogenous substance.
  • the embodiment set forth in claim 5 makes it possible, if necessary, to ensure maintaining such a high temperature, that the slag does not solidify in the rotary kiln. This causes variations in the calorific value of the waste material to be reduced, and a continuous supply of molten material is ensured.
  • the present invention also relates to an apparatus for use in carrying out the method, said apparatus being of the kind set forth in the preamble of claim 6.
  • the apparatus is constructed in the manner set forth in the charac ⁇ terizing clause of claim 6.
  • the advantage is achieved that the least possible amount of air is added, at the same time as the oxygen supplied to the combustion process is utilized to a maximum extent.
  • the atmosphere produced in this manner partly having reducing properties, lowers the melting point for various indifferent materials without the need of adding reducing agents.
  • FIG. 1 diagrammatically shows the principle of functioning of the apparatus according to the present invention
  • Figure 2 is a diagrammatical sectional view through an apparatus constructed according to the present invention.
  • Figure 3 is a sectional view along the line III-III in Figure 2, showing the feeding-in of the residual products. DESCRIPTION OF THE PREFERRED EMBODIMENT
  • the plant shown in Figure 2 consist of a grate section 1, a rotary kiln 2, a burner assembly 3, a residual- product silo 4, an after-burning chamber 5, a boiler assembly 6, and a residual-product conveyor 7.
  • Waste material 21 to be burnt mainly consisting of household refuse, bark, industrial waste, hospital refuse, and in part chemical waste material in a relatively inhomogenous mixture, is supplied to the plant through a hopper 20 and a feed chute 8 shown to the left in Figure 2.
  • the material having been fed in is distributed on grates 9, 10 and 11, these grates also receiving any liquid waste material, and air 31 for combustion is supplied from below.
  • Grate screenings i.e. small pieces of waste material, possibly containing unburnt material and having fallen through the grates 9, 10 and 11, are conveyed to the residual-products silo 4 by a belt conveyor 17 and the conveyor 7.
  • the incompletely burnt slag formed during the burning in the grate section is discharged in a manner known per se into the rotary kiln 2.
  • the residual products collected in the intermediate silo 4 are fed in through a dosing worm conveyor 13, and the residual products are mixed with each other and burned-out forming a melting mass in the rotary kiln 2.
  • the rotary kiln 2 may have conically converging ends, thus ensuring that the liquid slag is retained.
  • the burner assembly 3 is placed, preferably in the form of an oxygen/gas-burner system, adapted to provide continous temperature control at the slag outlet.
  • the slag is removed from the slag outlet 15 by means of a belt conveyor 22.
  • the flue gases are conducted from the rotary kiln 2 through the after-burning chamber 5 to the boiler assembly 6.
  • boiler ash 28 is separated out in a tail-end boiler (impact descaling boiler), and fly ash 29 is separated out by means of an elec- tri ⁇ al filter 23.
  • the boiler ash 28 and the fly ash 29 are conveyed to the residual-products silo 4 by means of a belt conveyor 18 and the conveyor 7.
  • the flue gases pass into, the reactor 24 in a flue-gas cleaning plant, in which lime 25 is added.
  • the reaction products from this plant are conveyed to a filter 26, in which a residual product 30 is separated out.
  • This residual product 30 is conveyed by belt conveyors 19 and 32 to the conveyor 7 and further to the residual-products silo 4, whilst the flue gases, from which the residual product 30 has been removed, are discharged through a chimney 27.
  • the present invention is not limited to exactly what has here been shown and described, and it should be noted that for a skilled person, it will be possible to make a number of modifications, e.g. by altering a number of rotary kilns or incinerating grates.
  • the main principle of the invention consists in that combustion slag and residual products, such as grate screenings, fly ash and reaction products, are melted together in a process step without intermediate cooling, i.e. the energy once having been produced in the slag is utilized for the melting process.

Abstract

On incinère les déchets solides et éventuellement liquides par a) la combustion partielle des déchets solides sur des grilles échelonnées (9, 10, 11) et leur introduction dans un fourneau rotatif (2) dans lequel règne une température suffisamment élevée pour assurer la formation d'une crasse liquide à l'entrée dudit fourneau; b) l'addition éventuelle de déchets liquides aux déchets solides incinérés sur lesdites grilles (9, 10, 11); et c) l'évacuation des cendres produites pendant le processus de combustion, par exemple les matières retenues par la grille, les cendres de la combustion, les cendres volantes et les produits restants après l'épuration des gaz brûlés, et leur réintroduction dans l'extrémité d'entrée (12) du fourneau rotatif (2), où l'on introduit ces produits dans la crasse liquide. Ainsi, la crasse, les cendres volantes et les autres produits résiduels nocifs engendrés par le processus de combustion fondent ensemble pour former une masse vitreuse dont on ne peut pas lixivier les sels et les métaux lourds.
EP19910912557 1990-07-03 1991-06-21 Procede et appareil d'incineration de divers types de dechets solides et eventuellement liquides Expired - Lifetime EP0536268B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91912557T ATE100559T1 (de) 1990-07-03 1991-06-21 Verfahren und vorrichtung zum verbrennen von feststoffabfaellen und moeglicherweise fluessigen abfaellen verschiedener art.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK160090A DK168245B1 (da) 1990-07-03 1990-07-03 Fremgangsmåde og anlæg til forbrænding af fast og eventuelt flydende affald af forskellig art
DK1600/90 1990-07-03

Publications (2)

Publication Number Publication Date
EP0536268A1 true EP0536268A1 (fr) 1993-04-14
EP0536268B1 EP0536268B1 (fr) 1994-01-19

Family

ID=8106425

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910912557 Expired - Lifetime EP0536268B1 (fr) 1990-07-03 1991-06-21 Procede et appareil d'incineration de divers types de dechets solides et eventuellement liquides

Country Status (9)

Country Link
EP (1) EP0536268B1 (fr)
JP (1) JPH06506758A (fr)
AU (1) AU8188591A (fr)
CA (1) CA2086525A1 (fr)
DE (1) DE69101064T2 (fr)
DK (1) DK168245B1 (fr)
ES (1) ES2103633B1 (fr)
RU (1) RU2090803C1 (fr)
WO (1) WO1992001197A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993017280A1 (fr) * 1992-02-26 1993-09-02 Kuenstler Hans Procede de fusion de residus de combustion dans des scories
US6199492B1 (en) * 1992-02-26 2001-03-13 KüNSTLER JOHANN HANS Process for melting down combustion residues into slag
FR2693536B1 (fr) * 1992-07-07 1994-09-30 Trepaud Sa Installation d'incinération de déchets.
FR2717249B1 (fr) * 1994-03-14 1996-06-28 Speic Procédé et installation d'épuration de fumées issues d'un incinérateur à fusion et vitrification des déchets.
JPH11502603A (ja) * 1995-03-30 1999-03-02 コッホ，テオドール 焼却装置
AT411705B (de) * 2001-06-01 2004-04-26 Bios Bioenergiesysteme Gmbh Anlage und verfahren zur verfeuerung von biomasse
DE10213788B4 (de) * 2002-03-27 2007-04-26 Martin GmbH für Umwelt- und Energietechnik Verfahren zur Beeinflussung der Eigenschaften von Verbrennungsrückständen aus einer Verbrennungsanlage
US20090050076A1 (en) * 2005-09-30 2009-02-26 Kim Allan Dam-Johansen Boiler producing steam from flue gases with high electrical efficiency and improved slag quality
US8234985B2 (en) * 2005-09-30 2012-08-07 Babcock & Wilcox Vølund A/S Boiler producing steam from flue gases under optimized conditions
EP1985687A1 (fr) * 2007-04-20 2008-10-29 Energy Biosystem Srl Procédé et installation de production d'énergie thermique utilisant de la glycérine brute comme carburant dans une chaudière

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2200756A1 (de) * 1972-01-07 1973-07-12 Koppers Wistra Ofenbau Gmbh Verfahren zum gemeinsamen verbrennen von muell und klaerschlamm und einrichtung zur durchfuehrung des verfahrens
CH622082A5 (fr) * 1977-04-06 1981-03-13 Von Roll Ag
JPS5492847A (en) * 1977-12-29 1979-07-23 Yoshida Kogyo Kk Interwoven slide fastener
US4299611A (en) * 1980-01-18 1981-11-10 Penberthy Harvey Larry Method and apparatus for converting hazardous material to a relatively harmless condition
DK154452C (da) * 1981-06-19 1989-04-10 Voelund Miljoeteknik Anlaeg til forbraending af fast og flydende affald af vilkaarlig art
EP0330872A3 (fr) * 1988-03-02 1990-09-12 Westinghouse Electric Corporation Procédé d'agglomération continue de métaux lourds contenus dans les cendres d'un incinérateur
JPH07117223B2 (ja) * 1988-09-14 1995-12-18 ケント、ジョン・エム 有害廃棄物を利用して無害骨材を形成するための方法および装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9201197A1 *

Also Published As

Publication number Publication date
DK160090A (da) 1992-01-04
DE69101064T2 (de) 1994-05-19
ES2103633B1 (es) 1998-07-01
ES2103633A1 (es) 1997-09-16
WO1992001197A1 (fr) 1992-01-23
CA2086525A1 (fr) 1992-01-04
EP0536268B1 (fr) 1994-01-19
DE69101064D1 (de) 1994-03-03
AU8188591A (en) 1992-02-04
DK160090D0 (da) 1990-07-03
RU2090803C1 (ru) 1997-09-20
JPH06506758A (ja) 1994-07-28
DK168245B1 (da) 1994-02-28

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