EP0536268A1 - Method and apparatus for incinerating different kinds of solid and possibly liquid waste material. - Google Patents

Method and apparatus for incinerating different kinds of solid and possibly liquid waste material.

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)
French (fr)
Other versions
EP0536268B1 (en
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/en
Publication of EP0536268A1 publication Critical patent/EP0536268A1/en
Application granted granted Critical
Publication of EP0536268B1 publication Critical patent/EP0536268B1/en
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.

Landscapes

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

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.Solid and possibly liquid waste is incinerated by a) the partial combustion of solid waste on staggered grids (9, 10, 11) and their introduction into a rotary furnace (2) in which a sufficiently high temperature prevails to ensure the formation of 'a liquid dirt at the entrance of said stove; b) the possible addition of liquid waste to the solid waste incinerated on said grids (9, 10, 11); and c) evacuating the ash produced during the combustion process, for example the materials retained by the grate, the ash from the combustion, the fly ash and the products remaining after the purification of the burnt gases, and their reintroduction into the 'inlet end (12) of the rotary furnace (2), where these products are introduced into the liquid dirt. Thus, dirt, fly ash and other harmful residual products generated by the combustion process melt together to form a vitreous mass from which salts and heavy metals cannot be leached.

Description

METHOD AND APPARATUS FOR INCINERATING DIFFERENT KINDS OF SOLID AND POSSIBLY LIQUID WASTE MATERIAL
TECHNICAL FIELD
The present invention relates to a method of the kind set forth in the preamble of claim 1.
BACKGROUND ART
With the steadily increasing quantities of waste material and the increasingly strict environmental requirements to the incineration of this material, the use of flue-gas cleaning results in the production of increasingly greater quantities of harmful residual products.
In the waste incineration plants known at the present moment, the temperature of combustion is held below 1100βC, 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.
These plants are so adapted and designed that the slag and the ash are discharged as a dry or moistened inho ogenous mixture respectively in as many as three different discharge assemblies.
Thus, boiler ash is obtained from the boiler assembly, e.g. being of the impact-descaling type, and fly ash from an electrical filter. Further, 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.
Further, "small waste" falls through the grate, and such grate screenings are taken to a slag outlet. It is, however, necessary that less than 3% of the slag is un-combusted.
These known plants do, of course, suffer from the dis¬ advantages that the salts and heavy metals atthached to the slag, the fly ash and the residual products from the flue-gas washing arrangement may be leached out, and some heavy metals evaporate during the process.
For this reason, these products must be deposited in a safe manner, e.g. by being placed in controlled waste-disposal sites, thus producing a percolate of a kind causing a considerable damage to the environment, or in salt mines.
DISCLOSURE OF THE INVENTION
It is the object of the present invention to make the slag, fly-ash and other harmful residual products produced by the combustion of solid and/or liquid waste material harmless, and this object is achieved with a method of the kind referred to initially, which according to the present invention is characterized by the features set forth in the characterising clause of claim 1.
In this manner, it is achieved that the substances in question are encapsulated in the relatively hot, liquid slag when passing through the rotary kiln, so that the product from the incineration of the waste material becomes a harmless, glassified slag incapable of giving off harmful substances, such as heavy metals, for which reason this slag may be deposited without problems.
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.
With the embodiment set forth in claim 2 it is achieved that the slag does not solidify in the rotary kiln.
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.
According to the present invention, the apparatus is constructed in the manner set forth in the charac¬ terizing clause of claim 6.
With the embodiment set forth in claim 8, 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.
With the embodiment set forth in claim 9 it is achieved that the liquid slag remains in a pocket at the lowermost part of the rotary kiln, until it has been completely glassified.
BRIEF DESCRIPTION OF THE DRAWINGS
In the following specification, the present invention will be explained in more detail with reference to the drawings, in which
Figure 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, and
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. At the transition 12 from the grate section 1 to 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.
At the exit end 15 of the rotary kiln 2, 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. In the latter, 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- triσal 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.
Downstream of the electrical filter 23, 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. As mentioned above, 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.
LIST OF PARTS
30 residual product
31 air for combustion
32 belt conveyor

Claims

CLAIMS:
1. A method of incinerating solid and possibly liquid waste material in a plant, in which a rotary kiln (2) is being used, said kiln being situated downstream from an incinerating section (1) with stepped grates (9, 10, 11), c h a r a c t e r i z e d in a) the solid waste material is partially combusted on the stepped grates (9, 10, 11) and delivered to the rotary kiln at such a high temperature, that the burning-out in the rotary kiln produces a liquid slag, b) that any liquid waste material is added to the waste material being combusted on the stepped grates (9, 10, 11), and c) that the ash products from the combustion, such as grate screenings, boiler ash, fly ash, and residual products from flue-gas cleaning, are collected and returned to the input end (12) of the rotary kiln (2), at which point these products are introduced and fused together with the liquid slag.
2. A method according to claim 1, c h a r a c- t e r i z e d in that the slag is melted in the grate furnace space (1) at temperatures of approximately 1100°C or above.
3. A method according to claim 1 or 2, c h a ¬ r a c t e r i z e d in that the temperature in the grate furnace space (1) is controlled by opening and closing a damper (14) in a bypass duct (16) between the grate furnace space (1) and the flue-gas duct (5).
4. A method according to any one or any of the claims 1-3, c h a r a c t e r i z e d in that the waste material delivered for combustion in the grate section (1) is utilized as the energy source for the melting.
5. A method according to any one or any of the claims 1-4, c h a r a c t e r i z e d in that the exit end (15) of the rotary kiln (2) is supplied with heat from a burner (3).
6. An apparatus for use in carrying out a method according to any one or any of the claims 1-5 and being of the kind comprising a) a grate section (1), b) a rotary kiln (2), said two components being situated in successive positions in the direction of movement of the waste material, c h a r a c t e r i z e d by a feed assembly (13) adapted for continuously dosing slag and ash products collected from the incinerating plant at the input end (12) of the rotary kiln (2) in order to cause these substances to be fused together with the liquid slag forming a glass-like product being dis¬ charged at the exit end (5) of the rotary kiln (2).
7. An apparatus according to claim 6, c h a ¬ r a c t e r i z e d by a burner (3), preferably in the form of an oxygen/gas-burner assembly, being situated at the exit end (15) of the rotary kiln.
8. An apparatus according to claim 6 or 7, c h a r a c t e r i z e d by a collecting container (4) situated upstream of the feed assembly (13).
9. An apparatus according to any one or any of the claims 6-8, c h a r a c t e r i z e d in that the rotary kiln, adapted to rotate about a downwardly inclined axis, comprises conically converging or constricted end portions.
EP19910912557 1990-07-03 1991-06-21 Method and apparatus for incinerating different kinds of solid and possibly liquid waste material Expired - Lifetime EP0536268B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91912557T ATE100559T1 (en) 1990-07-03 1991-06-21 METHOD AND DEVICE FOR INCINERATING SOLID WASTE AND POSSIBLE LIQUID WASTE OF DIFFERENT KINDS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK160090A DK168245B1 (en) 1990-07-03 1990-07-03 Process and plant for incineration of solid and possibly liquid waste of various kinds
DK1600/90 1990-07-03

Publications (2)

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

Family

ID=8106425

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910912557 Expired - Lifetime EP0536268B1 (en) 1990-07-03 1991-06-21 Method and apparatus for incinerating different kinds of solid and possibly liquid waste material

Country Status (9)

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

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06507232A (en) * 1992-02-26 1994-08-11 キュンストラー　ハンス Method of melting incineration residue into slag
US6199492B1 (en) * 1992-02-26 2001-03-13 KüNSTLER JOHANN HANS Process for melting down combustion residues into slag
FR2693536B1 (en) * 1992-07-07 1994-09-30 Trepaud Sa Waste incineration plant.
FR2717249B1 (en) * 1994-03-14 1996-06-28 Speic Process and installation for purifying fumes from a fusion incinerator and vitrification of waste.
WO1996030701A1 (en) * 1995-03-30 1996-10-03 Theodor Koch Combustion plant
AT411705B (en) * 2001-06-01 2004-04-26 Bios Bioenergiesysteme Gmbh INSTALLATION AND METHOD FOR BURNING BIOMASS
DE10213788B4 (en) * 2002-03-27 2007-04-26 Martin GmbH für Umwelt- und Energietechnik Method for influencing the properties of combustion residues from an incinerator
KR101029906B1 (en) * 2005-09-30 2011-04-18 밥콕 앤 윌콕스 뵐운트 아/에스 A 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 (en) * 2007-04-20 2008-10-29 Energy Biosystem Srl Process and installation of thermal energy production, using a crude glycerine as fuel in a boiler

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2200756A1 (en) * 1972-01-07 1973-07-12 Koppers Wistra Ofenbau Gmbh PROCEDURE FOR THE COMBINATION OF MUELL AND SEWAGE SLUDGE AND DEVICE FOR CARRYING OUT THE PROCEDURE
CH622082A5 (en) * 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 (en) * 1981-06-19 1989-04-10 Voelund Miljoeteknik ESTABLISHMENT FOR CONSUMPTION OF SOLID AND LIQUID WASTE OF ANY KIND
EP0330872A3 (en) * 1988-03-02 1990-09-12 Westinghouse Electric Corporation Method for continuous agglomeration of heavy metals contained in incinerator ash
KR950013974B1 (en) * 1988-09-14 1995-11-18 죤 엠. 켄트 Method and apparatus for using hazardous waste to form no-hazardous aggregate

Non-Patent Citations (1)

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

Also Published As

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

Similar Documents

Publication Publication Date Title
US1973697A (en) High temperature incinerator furnace
PL167590B1 (en) Apparatus for and method of thermally treating waste materials
JPH06241424A (en) Incinerating method of solid waste
EP0536268B1 (en) Method and apparatus for incinerating different kinds of solid and possibly liquid waste material
US4280417A (en) Incineration plant
EP0862019B1 (en) Method and device for thermal treatment of fly ash from grate incinerators
US5385104A (en) Method and apparatus for incinerating different kinds of solid and possibly liquid waste material
CZ286435B6 (en) Free waste thermal removal and apparatus for making the same
CN219083110U (en) Industrial waste incinerator
JP3623751B2 (en) Vertical waste incineration facility equipped with ash melting device and its operation method
HUT72158A (en) Method and apparatus for the yield of heat energy from waste materials, mainly from refuse
JPH11190510A (en) Incinerating method of waste in incinerator and treating method of slag generated by waste incineration
HUT73708A (en) Method and apparatous for pyrolizing of wastes
JPS6170314A (en) Whirling stream type fired melting furnace
JPH08121728A (en) Combustion method of gas produced from wastes melting furnace and secondary combustion furnace for wastes melting furnace
RU2133408C1 (en) Method of incineration of town refuse and use of ash formed after incineration
JP2000111025A (en) Secondary combustion furnace
JPS6370014A (en) Combustion-melting furnace of cyclone type for sewage sludge
JPS6252315A (en) Incinerating method for sorted incombustible garbage
JPH01184314A (en) Refuse melting furnace
KR100535196B1 (en) Method and apparatus for the thermal treatment of fly dust from grate incineration plants
JPH04302909A (en) Method and apparatus for treating waste
JPH11502603A (en) Incinerator
JP3891754B2 (en) Waste incineration ash melting system using fine combustion of waste plastics
JP2001280633A (en) Melting and exhaust gas treating system

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

17P Request for examination filed

Effective date: 19921209

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT DE DK FR GB IT NL SE

17Q First examination report despatched

Effective date: 19930504

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE DK FR GB IT NL SE

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

Ref country code: DK

Effective date: 19940119

REF Corresponds to:

Ref document number: 100559

Country of ref document: AT

Date of ref document: 19940215

Kind code of ref document: T

ITF It: translation for a ep patent filed
REF Corresponds to:

Ref document number: 69101064

Country of ref document: DE

Date of ref document: 19940303

ET Fr: translation filed
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
EAL Se: european patent in force in sweden

Ref document number: 91912557.5

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

Ref country code: SE

Payment date: 19990607

Year of fee payment: 9

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

Ref country code: FR

Payment date: 19990616

Year of fee payment: 9

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

Ref country code: DE

Payment date: 19990618

Year of fee payment: 9

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

Ref country code: NL

Payment date: 19990630

Year of fee payment: 9

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

Ref country code: SE

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

Effective date: 20000622

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

Ref country code: AT

Payment date: 20000629

Year of fee payment: 10

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

Ref country code: GB

Payment date: 20000719

Year of fee payment: 10

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

Ref country code: NL

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

Effective date: 20010101

EUG Se: european patent has lapsed

Ref document number: 91912557.5

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: 20010228

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20010101

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: DE

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

Effective date: 20010403

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: 20010621

Ref country code: AT

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

Effective date: 20010621

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20010621

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;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050621