EP0338927B1 - Verfahren und Vorrichtung zum Vernichten von chemisch stabilen Abfällen - Google Patents

Verfahren und Vorrichtung zum Vernichten von chemisch stabilen Abfällen Download PDF

Info

Publication number
EP0338927B1
EP0338927B1 EP89401094A EP89401094A EP0338927B1 EP 0338927 B1 EP0338927 B1 EP 0338927B1 EP 89401094 A EP89401094 A EP 89401094A EP 89401094 A EP89401094 A EP 89401094A EP 0338927 B1 EP0338927 B1 EP 0338927B1
Authority
EP
European Patent Office
Prior art keywords
orifice
waste
torch
nozzle
injector
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
EP89401094A
Other languages
English (en)
French (fr)
Other versions
EP0338927A1 (de
Inventor
Didier Michel Jean Marie Pineau
Yves Hervé Guillaume Valy
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.)
Airbus Group SAS
Original Assignee
Airbus Group SAS
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 Airbus Group SAS filed Critical Airbus Group SAS
Priority to AT89401094T priority Critical patent/ATE66013T1/de
Publication of EP0338927A1 publication Critical patent/EP0338927A1/de
Application granted granted Critical
Publication of EP0338927B1 publication Critical patent/EP0338927B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/28—Treating solids
    • G21F9/30—Processing
    • G21F9/32—Processing by incineration
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form

Definitions

  • the present invention relates to a method and a device for the destruction of chemically stable waste, and in particular radioactive waste and / or presenting significant dangers for the environment and living beings.
  • the present invention relates to a method and a device allowing the total destruction by pyrolysis of the most stable waste.
  • plasma torch of non-transferred arc is meant here, which is the usual meaning, a plasma torch comprising two fixed electrodes, on which the feet of the arc are hung.
  • the plasma dart attacks at the end (and no longer transversely as in the prior art) the stream of waste passing through said orifice.
  • the transfer of thermal energy is optimal and it is possible to obtain the destruction of very stable bodies, such as cyanide or organochlorine organic compounds.
  • the axes at least approximately coincident of said nozzle and said orifice are at least approximately vertical and the flow of waste moves, at least in the vicinity of said orifice, from bottom to top .
  • the dart of the plasma torch is therefore directed downwards.
  • said orifice is the end of a tubular waste injector, it can then be seen that the upper part of said injector can serve as a crucible for the end part of said waste stream, which is in the state liquid.
  • said nozzle and said orifice are arranged in an expansion chamber, in which the gases from the liquid end of the stream of said waste are burned.
  • Means may be provided for introducing oxygen and / or energy inside said expansion chamber, in order to facilitate the combustion of said gases.
  • the axes at least approximately coincident of said nozzle and said orifice are slightly inclined relative to the vertical, in the direction of said expansion chamber, so that part of the end liquid from said waste stream can spill into said expansion chamber. This liquid part is then treated and burned in said expansion chamber, possibly with an additional supply of oxygen and / or energy.
  • Such an expansion chamber can be a rotary kiln.
  • the gases resulting from combustion in the expansion chamber can undergo only one simple treatment.
  • they are simply washed in a washing tower, after having undergone a thermal quenching.
  • the waste to be destroyed by the implementation of the invention may, initially, be in gaseous or liquid form. However, they can also be in solid form.
  • treatment is provided to transform said solid waste into a paste which can be extruded through said orifice.
  • Such treatment may include shredding, grinding, and / or wetting operations.
  • the dough can then be moved by pumping means.
  • a guide duct in the form of a siphon.
  • the device comprises a plasma torch 1, capable of emitting a plasma dart 2 at the outlet of its nozzle 3.
  • This torch is of the known type with non-transferred arc. In known manner and not shown, it can be composed of two coaxial tubular electrodes, cooled, which are joined by an injection chamber of the plasma gas and by a part ensuring the electrical insulation of the two electrodes.
  • the arc foot can be rotated by a magnetic field coil for the upstream electrode, and by the action of the vortex in the downstream electrode.
  • the nominal operating characteristic of the torch can be 500 kW electric and the adjustment of the power of the torch is preferably carried out continuously between 250 kW and 500 kW.
  • the plasma torch 1 is arranged so that its axis 4 is at least substantially vertical, the nozzle being directed downwards.
  • the device in FIG. 1 comprises a tubular injector 5, the axis 6 of which is at least substantially vertical and coincides with the axis 4 of the torch 1.
  • the tubular injector 5 is supplied with waste to be destroyed by its lower end 7. This waste leaves said injector 5 through the upper orifice 8 thereof, arranged opposite the nozzle 3.
  • the diameter D of the tubular injector 5 is equal to a few times (2 or 3) the diameter d of the nozzle 3. In one embodiment, the diameter D of the injector 5 was equal to 100 mm.
  • At least the lower part of the nozzle 3 and the upper part of the tubular injector 5 are arranged in a valve system 9, giving access to a gas expansion chamber 10.
  • the embodiment of the device according to the invention, shown in FIG. 1, is more particularly intended for the destruction of solid waste.
  • the waste to be destroyed is for example contained in drums and, in order to reduce the costs of processing said waste, the device of FIG. 1 makes it possible to destroy said drums at the same time as the waste they contain.
  • the device comprises a device 11 for prior treatment of said waste comprising a shredder-shredder 12 fed by a hopper 13, and which is optionally associated with a finisher shears (not shown), a mixer-feeder 14 provided with an inlet fluid 14, and a pump 16.
  • the outlet of the pump 16 is connected to the lower part 7 of the injector 5 by a guide duct 17 forming a siphon.
  • a safety member 18, for example a knife gate valve, is provided between the pump 16 and the guide duct 17.
  • the barrels 19 of waste to be destroyed are introduced into the hopper 13 and led to the shredder-shredder 12, the knives of which grip, shear, tear and compress said barrels and their container.
  • the possible finishing shear makes it possible to reduce the final particle size of the comminuted materials to a dimension which is, for example, 10 ⁇ 20 mm maximum.
  • the whole process is carried out in a cascade by gravity, without manual intervention in a relatively slow manner to avoid any production of sparks which could ignite the product.
  • all the equipment can be put under vacuum, to avoid any toxic gas emission.
  • the ground materials thus reduced in size, flow by gravity to the mixer-feeder 14 whose role is to compact the materials (the pasty parts with the foreign bodies) by pushing them into the transfer pump 16.
  • the pump 16 is for example of the known type (PUSTMASTER) with hydraulic cylinders and allows a regular supply flow of the heterogeneous mixture and under high pressure (80 to 100 bars), thus ensuring excellent compaction.
  • the ground waste (with their containers) is in a pasty form.
  • the pump 16 pushes this pasty material (through the safety member 18) in the guide duct 17, up to the injector 5.
  • the pasty material therefore forms a flange 20 which advances towards the nozzle 3.
  • the siphon shape of the guide duct 17 prevents any liquid or gas rising towards the pump 16.
  • the tube 20 progresses from bottom to top and its upper end part is subjected to the action of the plasma stinger 2, which attacks it at the end (see FIG. 2).
  • the upper part of the flange 20, constantly renewed, is nibbled by the plasma dart 2 (the temperature of which is around 4000 to 5000 ° C) and goes into the molten liquid phase (see reference 21), which itself gives rise to a gaseous phase 22 in the opening system 9.
  • An intermediate semi-molten pasty phase 23 is established between the upper zone 21 of the liquid phase and the pasty roll 20.
  • liquid phase of zone 21 forms a sort of crucible constituting thermal and chemical protection of the injector 5.
  • the gas phase 22 appearing in the opening system 9 is evacuated towards the expansion chamber 10, in which it finishes destroying itself completely under the effect of the temperature which prevails there (for example of the order of 1800 ° C). Self-combustion occurs, which can be promoted by the introduction of air or oxygen (at 24).
  • the expansion chamber 10 can be designed for the substoichiometric combustion of chlorinated liquid effluents and it can be provided with an internal coating of the "CHROMCOR" type.
  • the free upper end of the flange 20 is in intimate and prolonged contact with the dart 2 and undergoes in the vicinity of the upper orifice 8 of said injector, a very sharp rise in temperature; the molecules of the material of the pasty sausage are then completely dissociated into more or less ionized elementary particles.
  • the combustion gases generated in the expansion chamber are treated by a system 25, which, because of the excellent performance of the device according to the invention, can be uncomplicated.
  • the system 25 may include a quenching device 26 making it possible to lower the temperature of the gases and followed by a washing tower 27. thus neutralizes residual products, such as chlorine for example, and the gases can then be led to a chimney 28, for their evacuation to the atmosphere.
  • these gases can be introduced into a boiler for energy recovery.
  • the axes 4 and 6, of the torch 1 and of the injector 5 respectively are inclined relative to the vertical, so that at least part 29 of the liquid phase 21 of the flange 20 (see FIG. 2) can flow into the expansion chamber 10.
  • the latter is then advantageous for the latter to be produced in the form of an inclined rotary kiln 30 capable of mixing the non-gaseous elements coming from the injector 5 and which will eventually destroy themselves on their way to the lower downstream part of said rotary kiln 30, thanks to the high temperature prevailing in said rotary kiln 30.
  • air can be introduced (at 31) under pressure in the latter.
  • Burners can also be provided (not shown) in order to provide additional energy (symbolized by arrow 32), to said rotary kiln.
  • the downstream part 33 of the rotary kiln 30 then forms a post-combustion chamber for the gaseous products. In this post-combustion chamber, there are no more non-gaseous products.
  • FIG 4 there is partially shown an industrial embodiment of the device of Figure 3. It can be seen there the rotary kiln 30, whose longitudinal axis XX is inclined downward from the opening system 9 towards the post-combustion chamber 33, in order to facilitate the progression (during which they will be completely gasified) of the molten materials 29, from upstream to downstream.
  • This rotary kiln is supported by rollers 34 and rotated by a motor 35, by means of a rotary roller 36.
  • the connection between the opening system 9 and the rotary kiln 30 is made by a piece of fixed adaptation 45.
  • FIG. 4 also shows that the injector 5, for example made of tantalum, has a double wall structure, inside which a cooling fluid can circulate. To this end, said injector 5 is connected to a circuit 37 for circulating coolant.
  • the plasma torch 1 is associated with a cooling group, a group for producing plasma gas (for example air) and a power supply.
  • the bottom 38 of the opening system 9 can be tilted to promote the flow of the molten material 29 to the furnace 30.
  • the speed of advance of the flange 20 is obviously controllable by controlling the pump 16.
  • the power of the torch 1 is electrically adjustable in a known manner.
  • Torch 1 is slidably mounted on along its axis 4; in its sliding, it is guided by a column 39 with which a slider 40 cooperates.
  • the slider 40 is movable by a motor system 41 and screws 42.
  • a bellows 43 seals between the torch 1 and the opening system 9.
  • baffles 44 are provided, forming baffles, arranged in the adaptation piece 45, to prevent the projection of particles torn from the rod 20 by the plasma, at too great a distance from inside said oven.
  • the deflectors 44 thus allow the particles to be treated as close as possible to the plasma jet.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Processing Of Solid Wastes (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Arc Welding In General (AREA)

Claims (16)

1. Verfahren zum Vernichten vorn chemisch stabilen Abfällen (19) durch Pyrolyse mittels eines Plasmabrenners (1), dadurch gekennzeichnet, daß
― Brenner (1) ein Plasmabrenner mit einem nicht versetzbaren Lichtbogen ist,
― die Düse (3) des Brenners (1) auf eine Öffnung (8) derart gerichtet wird, daß die Achse (4) der Düse und die Achse (6) der Öffnung zumindest annähernd zusammenfallen und daß
― ein Fluß (20) vom Abfällen durch die Öffnung (8) hindurch derart geleitet wird, daß sie zum Brenner (1) hin befördert werden.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Durchmesser der Öffnung (8) einem Mehrfachen des Durchmessers der Düse (3) des Brenners entspricht.
3. Verfahrern nach einem der vorhergehenden Ansprüche 1 oder 2, dadurch gekennzeichnet, daß zumindest der Abstand zwischen dem Brenner (1) und der Öffnung (8) einstellbar ist.
4. Verfahren nach einem der vorhergehendern Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die zumindest annähernd zusammenfallenden Achsen der Düse (3) und der Öffnung (8) mindestens annähernd senkrecht stehen und daß sich der Fluß (20) der Abfälle zumindest in der Nähe der Öffnung (8) von unten nach oben bewegt.
5. Verfahren nach einem der vorhergehenden Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Gas- und/oder Flüssigprodukte, die sich aus der Einwirkung des Brenners (1) auf den Fluß (20) der Abfälle ergeben, einer Expansion und Verbrennung ausgesetzt werden.
6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß die sich aus der Expansion und Verbrennung ergebenden Gasprodukte angefeuchtet und hiernach gewaschen werden.
7. Verfahren nach einem der vorhergehenden Ansprüche 1 bis 6 in Anwendung auf feste Abfälle, dadurch gekennzeichnet, daß die festen Abfälle zu einer breiartigen Masse umgebildet werden, die durch die Öffnung (8) extrudierbar ist.
8. Vorrichtung zum Vernichten von chemisch stabilen Abfällen (19) durch Pyrolose mittels zumindest eines Plasmabrenners (1), dadurch gekennzeichnet, daß
― als Brenner (1) ein Plasmabrenner mit nicht versetzbarem Lichtbogen verwendet wird,
― sie einen Injektor (5) für einen aus dem Abfällen bestehenden Fluß (20) aufweist und daß
― die Achse (4) der Düse (3) des Brenners (1) zumindest annähernd mit der Achse (6) der Ausgangsöffnung (8) des Injektors (5) zusammenfällt.
9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Ausgangsöffnung (8) des Injektors (5) nach oben gerichtet ist.
10. Vorrichtung mach einem der vorhergehenden Ansprüche 8 oder 9, dadurch gekennzeichnet, daß die Düse (3) und die Öffnung (8) in einer Expansions- und Brennkammer (10, 30) angeordnet sind.
11. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß eine Einrichtung zum Zuführen von Sauerstoff und/oder Energie ins Innere der Expansionskammer (10, 30) vorgesehern ist.
12. Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß die zumindest annähernd zusammenfallenden Achsen der Düse und der Öffnung gegenüber der Vertikalen in Richtung der Expansionskammer (10, 30) geringfügig angeneigt sind.
13. Vorrichtung nach einem der vorhergehenden Ansprüche 11 oder 12, dadurch gekennzeichnet, daß der Düse und Öffnung gerade gegenüberliegend prallflächen (44) im Innern der Expansionskammer (10, 30) vorgesehen sind.
14. Vorrichtung nach einem der vorhergehenden Ansprüche 11 bis 13, dadurch gekennzeichnet, daß als Expansionskammer ein Drehofen (30) verwendet wird.
15. Vorrichtung nach eimem der vorhergehenden Ansprüche 8 bis 14, dadurch gekennzeichnet, daß sie eine Einrichtung (11) zum Umwandeln von festen Abfällen zu einer breiartigen Masse aufweist, die durch die Öffnung (8) hindurch extrudierbar ist.
16. Vorrichtung nach einem der vorhergehenden Ansprüche 8 bis 15 mit einer Vorschubeinrichtung (16) für die Abfälle, dadurch gekennzeichnet, daß zwischen der Vorschubeinrichtung (16) und dem Injektor (5) ein als Siphon ausgebildetes Führungsrohr (7) für die Abfälle vorgesehen ist.
EP89401094A 1988-04-22 1989-04-19 Verfahren und Vorrichtung zum Vernichten von chemisch stabilen Abfällen Expired - Lifetime EP0338927B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89401094T ATE66013T1 (de) 1988-04-22 1989-04-19 Verfahren und vorrichtung zum vernichten von chemisch stabilen abfaellen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8805389A FR2630529B1 (fr) 1988-04-22 1988-04-22 Procede et dispositif pour la destruction de dechets chimiquement stables
FR8805389 1988-04-22

Publications (2)

Publication Number Publication Date
EP0338927A1 EP0338927A1 (de) 1989-10-25
EP0338927B1 true EP0338927B1 (de) 1991-08-07

Family

ID=9365594

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89401094A Expired - Lifetime EP0338927B1 (de) 1988-04-22 1989-04-19 Verfahren und Vorrichtung zum Vernichten von chemisch stabilen Abfällen

Country Status (9)

Country Link
US (1) US4980092A (de)
EP (1) EP0338927B1 (de)
JP (1) JP2971073B2 (de)
AT (1) ATE66013T1 (de)
CA (1) CA1304789C (de)
DE (1) DE68900185D1 (de)
ES (1) ES2024717B3 (de)
FR (1) FR2630529B1 (de)
GR (1) GR3002438T3 (de)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5270515A (en) * 1990-04-02 1993-12-14 Long Raymond E Microwave plasma detoxification reactor and process for hazardous wastes
GB9017146D0 (en) * 1990-08-03 1990-09-19 Tioxide Group Services Ltd Destruction process
US5090340A (en) * 1991-08-02 1992-02-25 Burgess Donald A Plasma disintegration for waste material
US5866753A (en) * 1992-03-04 1999-02-02 Commonwealth Scientific Material processing
FR2690733B1 (fr) * 1992-04-29 1994-07-29 Spie Batignolles Procede et installation pour detruire des dechets solides par plasma.
DE4303722C1 (de) * 1993-02-10 1994-05-05 Metallgesellschaft Ag Verfahren zur thermischen Abtrennung von organischen und/oder anorganischen Stoffen aus kontaminiertem Material
JPH0767979A (ja) * 1993-06-29 1995-03-14 Ind Technol Res Inst 廃棄物処理装置及び処理方法
GB9405209D0 (en) * 1994-03-17 1994-04-27 Wrc Plc Plasma gasification process for a sludge feedstock
US5534659A (en) * 1994-04-18 1996-07-09 Plasma Energy Applied Technology Incorporated Apparatus and method for treating hazardous waste
US5611947A (en) * 1994-09-07 1997-03-18 Alliant Techsystems, Inc. Induction steam plasma torch for generating a steam plasma for treating a feed slurry
US5762009A (en) * 1995-06-07 1998-06-09 Alliant Techsystems, Inc. Plasma energy recycle and conversion (PERC) reactor and process
US5637127A (en) * 1995-12-01 1997-06-10 Westinghouse Electric Corporation Plasma vitrification of waste materials
EP0874782B1 (de) 1995-12-20 2001-06-06 Alcan International Limited Thermalplasmareaktor und abwasserbehandlungsmethode
DE19625539A1 (de) * 1996-06-26 1998-01-02 Entwicklungsgesellschaft Elekt Verfahren zur thermischen Behandlung von Stoffen in einem Plasmaofen
US5902915A (en) * 1997-03-20 1999-05-11 Lawrence Plasma Research Laboratory Inc. Process for producing liquid hydrocarbons
US5809911A (en) * 1997-04-16 1998-09-22 Allied Technology Group, Inc. Multi-zone waste processing reactor system
FR2780235B1 (fr) * 1998-06-22 2000-09-22 Aerospatiale Procede d'injection dans un jet de plasma d'un fluide a traiter et application notamment a la destruction de dechets toxiques
US6250236B1 (en) 1998-11-09 2001-06-26 Allied Technology Group, Inc. Multi-zoned waste processing reactor system with bulk processing unit
US6514469B1 (en) 2000-09-22 2003-02-04 Yuji Kado Ruggedized methods and systems for processing hazardous waste
US6551563B1 (en) 2000-09-22 2003-04-22 Vanguard Research, Inc. Methods and systems for safely processing hazardous waste
US7083763B1 (en) * 2002-09-23 2006-08-01 Pierce Jr Joseph Frank Feeding system for fuel gas generator
US20050070751A1 (en) * 2003-09-27 2005-03-31 Capote Jose A Method and apparatus for treating liquid waste
US6971323B2 (en) 2004-03-19 2005-12-06 Peat International, Inc. Method and apparatus for treating waste
WO2006021945A1 (en) * 2004-08-26 2006-03-02 E.S.T. Ecological Systems Ltd. Method and system for treating chemical waste
US7832344B2 (en) * 2006-02-28 2010-11-16 Peat International, Inc. Method and apparatus of treating waste
EP2247347A4 (de) * 2008-02-08 2013-08-14 Peat International Inc Verfahren und vorrichtung zur behandlung von abfall
KR101025035B1 (ko) * 2009-06-23 2011-03-25 주성호 프라즈마를 이용한 버어너
EP2452123A1 (de) 2009-07-06 2012-05-16 Peat International, INC. Abfallbehandlungsvorrichtung
RU2504443C1 (ru) * 2012-11-30 2014-01-20 Федеральное государственное бюджетное учреждение "Национальный исследовательский центр "Курчатовский институт" Способ плазменно-каталитической переработки твердых бытовых отходов

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841239A (en) * 1972-06-17 1974-10-15 Shin Meiwa Ind Co Ltd Method and apparatus for thermally decomposing refuse
HU184389B (en) * 1981-02-27 1984-08-28 Villamos Ipari Kutato Intezet Method and apparatus for destroying wastes by using of plasmatechnic
SE451033B (sv) * 1982-01-18 1987-08-24 Skf Steel Eng Ab Sett och anordning for omvandling av avfallsmaterial med plasmagenerator
US4479443A (en) * 1982-03-08 1984-10-30 Inge Faldt Method and apparatus for thermal decomposition of stable compounds
FR2526141B1 (fr) * 1982-04-30 1988-02-26 Electricite De France Procede et installation de chauffage d'un lit fluidise par injection de plasma
AT382890B (de) * 1982-10-05 1987-04-27 Voest Alpine Ag Plasmaschmelzofen
CA1225441A (en) * 1984-01-23 1987-08-11 Edward S. Fox Plasma pyrolysis waste destruction
FR2610087B1 (fr) * 1987-01-22 1989-11-24 Aerospatiale Procede et dispositif pour la destruction de dechets solides par pyrolyse
US4770109A (en) * 1987-05-04 1988-09-13 Retech, Inc. Apparatus and method for high temperature disposal of hazardous waste materials

Also Published As

Publication number Publication date
GR3002438T3 (en) 1992-12-30
DE68900185D1 (de) 1991-09-12
US4980092A (en) 1990-12-25
ES2024717B3 (es) 1992-03-01
ATE66013T1 (de) 1991-08-15
JP2971073B2 (ja) 1999-11-02
FR2630529A1 (fr) 1989-10-27
FR2630529B1 (fr) 1990-08-10
EP0338927A1 (de) 1989-10-25
JPH01315382A (ja) 1989-12-20
CA1304789C (fr) 1992-07-07

Similar Documents

Publication Publication Date Title
EP0338927B1 (de) Verfahren und Vorrichtung zum Vernichten von chemisch stabilen Abfällen
EP0707558B1 (de) Verfahren zur behandlung von verbrennungsrückständen und vorrichtung dafür
CA1152475A (fr) Procede et dispositif de broyage de caoutchouc
US4770109A (en) Apparatus and method for high temperature disposal of hazardous waste materials
FR2740860A1 (fr) Bruleur a gaz enrichi en oxygene et procede de traitement de dechets utilisant ce bruleur
EP2504624B1 (de) Verfahren und vorrichtung zur thermischen zerstörung von organischen verbindungen mit einem induktionsplasma
FR2558571A1 (fr) Destruction de dechets par pyrolyse sous plasma
CH629886A5 (fr) Procede de combustion d'un combustible carbone.
FR2635170A1 (fr) Appareil et procede pour la destruction des dechets par incineration ou pyrolyse
EP0093632A1 (de) Verfahren und Vorrichtung zum Beheizen eines Fliessbettes durch Plasmainjektion und Anwendungen bei der Synthese von Stickoxiden, bei der Vergasung einer kohlenstoffhaltigen Substanz und bei der Reduktion von Erzen
FR2623877A1 (fr) Appareil de combustion equipe d'un bloc-bruleur auxiliaire pour des fluides liquides
WO1995004004A1 (fr) Procede d'inertage par torche a plasma de produits contenant des metaux, en particulier des metaux lourds et installation pour sa mise en ×uvre
US5005494A (en) Apparatus and method for high temperature disposal of hazardous waste materials
EP0232658B1 (de) Verfahren und Vorrichtung zur exothermischen Reaktion zwischen Gasen
EP0593671A1 (de) Verfahren zur verbrennung von organischen abfällen
EP0630957A1 (de) Niederdruckpyrolyseofen zur Vorrichtung von industriellen organischen Abfällen
FR2690733A1 (fr) Procédé et installation pour détruire des déchets solides par plasma.
FR2685449A1 (fr) Four de pyrolyse sous basse pression pour la destruction de dechets organiques industriels.
FR2784171A1 (fr) Bruleur pour le chauffage d'un produit pulverulent, et procede de vitrification d'un produit pulverulent mis en oeuvre au moyen d'un tel bruleur
EP0997686A1 (de) Vorrichtung zur thermischen Oxidation von flüssigen, festen oder gasförmigen Schlachthausrückständen
FR2780235A1 (fr) Procede d'injection dans un jet de plasma d'un fluide a traiter et application notamment a la destruction de dechets toxiques
FR2695985A1 (fr) Procédé et installation de post-combustion de gaz notamment de résidus de pyrolyse.
BE550738A (de)
EP0179195A1 (de) Beschickungssystem eines Ofens, das die Filtration der Gaspartikel, die Kondensation der volatilen Produkte und ihre Rückführung zum Ofen erlaubt
EP0738855A1 (de) Verfahren zur Behandlung durch Verbrennung von Feststoffen mit geringem Heizwert

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19891111

17Q First examination report despatched

Effective date: 19900905

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES GB GR IT LI LU NL SE

REF Corresponds to:

Ref document number: 66013

Country of ref document: AT

Date of ref document: 19910815

Kind code of ref document: T

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 68900185

Country of ref document: DE

Date of ref document: 19910912

ITF It: translation for a ep patent filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2024717

Country of ref document: ES

Kind code of ref document: B3

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
REG Reference to a national code

Ref country code: GR

Ref legal event code: FG4A

Free format text: 3002438

EPTA Lu: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 89401094.1

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

Ref country code: CH

Payment date: 19990412

Year of fee payment: 11

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

Ref country code: GB

Payment date: 19990413

Year of fee payment: 11

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

Ref country code: SE

Payment date: 19990419

Year of fee payment: 11

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

Ref country code: ES

Payment date: 19990423

Year of fee payment: 11

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

Ref country code: LU

Payment date: 19990428

Year of fee payment: 11

Ref country code: GR

Payment date: 19990428

Year of fee payment: 11

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

Ref country code: NL

Payment date: 19990429

Year of fee payment: 11

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

Ref country code: DE

Payment date: 19990430

Year of fee payment: 11

Ref country code: AT

Payment date: 19990430

Year of fee payment: 11

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

Ref country code: BE

Payment date: 19990505

Year of fee payment: 11

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

Ref country code: LU

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

Effective date: 20000419

Ref country code: GB

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

Effective date: 20000419

Ref country code: AT

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

Effective date: 20000419

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: 20000420

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

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 20000422

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

Ref country code: LI

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

Effective date: 20000430

Ref country code: GR

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

Effective date: 20000430

Ref country code: CH

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

Effective date: 20000430

Ref country code: BE

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

Effective date: 20000430

BERE Be: lapsed

Owner name: AEROSPATIALE SOC. NATIONALE INDUSTRIELLE

Effective date: 20000430

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: 20001101

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

Effective date: 20000419

EUG Se: european patent has lapsed

Ref document number: 89401094.1

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Effective date: 20001101

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: 20010201

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20020204

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: 20050419