EP0419365A1 - Vorrichtung zum Eindüsen von Schlamm in einen Müllverbrennungsofen - Google Patents
Vorrichtung zum Eindüsen von Schlamm in einen Müllverbrennungsofen Download PDFInfo
- Publication number
- EP0419365A1 EP0419365A1 EP90402609A EP90402609A EP0419365A1 EP 0419365 A1 EP0419365 A1 EP 0419365A1 EP 90402609 A EP90402609 A EP 90402609A EP 90402609 A EP90402609 A EP 90402609A EP 0419365 A1 EP0419365 A1 EP 0419365A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- injector
- sludge
- distribution chamber
- injectors
- cleaning
- 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
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 64
- 238000002485 combustion reaction Methods 0.000 claims abstract description 32
- 238000002347 injection Methods 0.000 claims abstract description 26
- 239000007924 injection Substances 0.000 claims abstract description 26
- 239000010791 domestic waste Substances 0.000 claims abstract description 8
- 230000004224 protection Effects 0.000 claims abstract description 4
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 3
- 238000004140 cleaning Methods 0.000 claims description 30
- 238000007789 sealing Methods 0.000 claims description 11
- 239000004519 grease Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- 239000012809 cooling fluid Substances 0.000 claims description 6
- 239000002826 coolant Substances 0.000 claims description 5
- 230000002035 prolonged effect Effects 0.000 claims description 4
- 238000004065 wastewater treatment Methods 0.000 claims description 3
- 239000000645 desinfectant Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000008016 vaporization Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 1
- 238000000746 purification Methods 0.000 abstract 1
- 239000002351 wastewater Substances 0.000 abstract 1
- 238000001035 drying Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000004056 waste incineration Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 235000014510 cooky Nutrition 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
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
- F23G5/50—Control or safety arrangements
-
- 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
- F23G5/44—Details; Accessories
- F23G5/442—Waste feed arrangements
Definitions
- the present invention relates to a device for carrying out an introduction by injection of sludge into the combustion chamber of an incinerator.
- the present invention proposes to provide a solution which deviates from the solutions previously used to ensure the introduction of sludge into the combustion chamber of an incinerator by allowing a homogeneous supply of sludge by injection into the combustion chamber, according to a constant flow and in a form ensuring a fast combustion and without nuisance.
- the subject of the present invention is a device making it possible to inject sludge originating in particular from wastewater treatment plants, into the combustion chamber of an incinerator, in particular of a household waste incinerator. , characterized in that it comprises at least one injector of small diameter, passing through the thermal protection means of the combustion chamber and supplied, at a constant flow rate for all the injectors, via a distribution chamber, each injector being made up of a tube having a cylindrical shape and comprising a conical shaped end piece, combustion chamber side, with the wide angle situated on the side of the sludge outlet side of the injector and in that the thermal regulation of each inj ector is carried out so as to obtain a linear temperature gradient all along the injector by carrying out the training in the injector, as and when measured e of the injection of a calibrated rod of sludge comprising a superficial crust in the zone close to the combustion chamber.
- the diameter of each of the injectors is between 10 and 40 mm.
- each of the injectors is provided with a cooling system designed so as to circulate a cooling fluid, in particular water, in an enclosure delimited between the injection tube and a sleeve surrounding said tube on the side of the foot of the injector, the injection of the coolant such as water into said enclosure being effected by a supply line opening into this enclosure under the injection tube, on the side of the injector foot, this cooling fluid vaporizing in said enclosure.
- a cooling fluid in particular water
- the distribution chamber is of generally tubular shape, with constant section, and the surface of its straight section perpendicular to its longitudinal axis is greater than the sum of the surfaces of the sections of inlet of the injection tubes which open into the lower part of this distribution chamber.
- the sludge supply to this distribution chamber can be carried out either by one of its ends or from its upper surface, an evacuation for emptying being provided at one of the ends of the supply chamber.
- means are provided for ensuring the unclogging and / or cleaning and / or sealing of the different injectors, each of these means being constituted by a rod passing through the distribution chamber and penetrating into the tube. the corresponding injector up to the conical part of the latter, the diameter of each of the rods being less than that of the bore of the cylindrical part of the injection tube.
- These rods can be operated either manually or by any suitable motor device such as in particular jacks. They may be provided with recall means.
- the sealing of each of said rods through the body of the distribution chamber is ensured by a system of seals and a grease box and the cooling of each of the rods when it is withdrawn from the injection tube. corresponding, after cleaning and / or sealing is obtained by passing the rod through the mass of sludge present in the distribution chamber and through the grease contained in said grease box.
- the device which is the subject of the invention comprises at least one injector making it possible to introduce the sludge into the combustion chamber of an incinerator by passing through the thermal protections of this chamber or of the screens boiler furnaces.
- the problem solved by the invention is to provide a homogeneous and constant flow of sludge into this combustion chamber and for this purpose, in accordance with the invention, the sludge is spun through each injector which is thermally regulated so to calibrate the mud flange thus introduced into the combustion chamber.
- the device which is the subject of the present invention essentially comprises the following elements: - at least one injection tube designated as a whole by the reference 10; a chamber 12 of particular configuration making it possible to produce a homogeneous distribution and at a constant flow rate of each injector 10 leading to this distribution chamber; - Means designated as a whole by the reference 16 making it possible to cool the injectors 10; - Means designated as a whole by the reference 14 which are designed so as to provide cleaning and / or cleaning and / or sealing of each injector 10 and; - Means for performing a drain and cleaning during prolonged shutdown of the device.
- each injector consists of a tube 18 of cylindrical shape, the mouth side 20 of which has a conical shape with a large diameter located on the side of the sludge outlet, this in particular in order to 'avoid jams, as will be described below.
- the other end of the injection tube 18 is fixed to the distribution chamber 12 by any suitable means, for example by a system of flanges and nuts as can be clearly seen in FIG. 2.
- Each of the injectors has a small inlet diameter which, according to the present invention, is between 10 and 40 mm. Its length is for example of the order of 350 mm between the entry of the sludge at the foot of the injector and their exit at the end of the nozzle 20 of the latter.
- FIG. 4 illustrates by way of non-limiting example a method of mounting an injector 10 on the fin of the screen tubes 60 of the wall 62 of a household waste incineration oven.
- FIG. 4 can consider other fastening systems for example directly on the structure of the combustion chamber or in the masonry of an incinerator without recovery system.
- each injector such as 10 is carried out using the distribution chamber 12 to which the sludge is delivered using a supply pump (not shown in the drawing).
- this chamber is in the form of a body 40 of generally tubular shape, the upper part 42 of which is removable so as to be able to act as an inspection hatch.
- the introduction of sludge into this distribution chamber can be carried out either through one of the end walls of the chamber or by means of an introduction orifice provided on the upper part 42 of the body of this room.
- the introduction of the sludge is carried out by means of a supply pipe 44, at one of the ends of the body 40, on which a inlet valve 46.
- the end of the body of the distribution chamber opposite the arrival of the sludge (tubing 44) is provided with a sewerage tubing 36 provided with a valve 38.
- the lower part of the body 40 of the distribution box has orifices 48 on each of which opens an injector.
- the surface of the cross section perpendicular to its longitudinal axis, of the distribution chamber 12 is greater than the sum of the surfaces of the orifices 48 through which the sludge supply to each injector tube takes place.
- each injector that is to say on the side of the distribution chamber 12
- a sleeve 22 surrounding the cylindrical tube 18 thereby providing a chamber 24 in which a cooling fluid circulates , in particular water, which vaporizes in said chamber.
- This coolant is introduced into the chamber 24 using a supply pipe which opens out through an orifice 26 provided under the lower part of the sleeve 22 as can be see in Figure 2, this orifice 26 being located near the foot of the injector.
- the coolant outlet takes place through an orifice 28 disposed on the sleeve 22 opposite the orifice 26.
- the pipe 30 which makes it possible to supply the fluid with cooling.
- this cooling fluid makes it possible to obtain a difference in level with the outlet orifice 28, which ensures the constitution of a guard, the overflow being able to possibly be poured into the tube 36 for draining the body of the distribution chamber 12 downstream of the drain valve 38 of this body.
- the flow rate of this fluid can be adjusted either manually or automatically using a valve 32 mounted on the tube 30, this valve being able to be controlled in flow rate thanks to a sensor and to a temperature regulator 34 which are placed on the wall of the distribution chamber 12 (FIG. 3).
- Cooling of the injectors such as 10 by circulation of water is necessary in particular in the case of a rise in temperature beyond the acceptable limit for all the components of the device.
- the cooling during the injection of the sludge being obtained by the circulation of the sludge through the injector.
- the invention provides means for ensuring cleaning and / or cleaning and / or sealing of each injector tube.
- these means comprise for each injector a rod 50 which passes through the wall of the body 40 of the distribution chamber through an orifice 49 which is located in view of the orifice 48 through which the sludge supply to the injector concerned takes place.
- This rod has a diameter smaller than that of the tube 18 of the injector and its stroke is determined so that it penetrates this tube up to the conical part 20 of the latter.
- each cleaning rod will have a diameter of 20 mm.
- the end piece of the rod 50 acts as a cookie cutter with the orifice 48.
- the rods such as 50 can be actuated by any suitable means, in particular using cylinders 52, pneumatic, hydraulic, supplied with the aid of a distributor 78 or mechanical cylinders.
- a system of seals, for example a lip seal 54 is interposed between each rod 50 and a spacer 56 ensuring the connection between the body 40 of the distribution chamber and the cylinder of each jack 52 and a box is further provided.
- grease 58 which is placed in front of the fixing means of each jack 52.
- each rod such as 50 is in the retracted position, as shown in FIG. 3, and the movements of advancement and retreat of the rods such as 50 only intervene in the event of stuffing of an injector.
- the rod 50 is introduced into the tube of the corresponding injector and it is maintained in this position in order to fulfill the following functions: - stop the injection of sludge; - obstruct the entry into the device of gases or high temperatures prevailing in the incinerator; - prevent drying of the mud; - isolate the sludge supply body from the distribution chamber 12 in order to ensure its cleaning.
- each rod 50 when it is withdrawn from an injector 10 after cleaning is cooled by passing through the mass of sludge which is contained in the distribution chamber 12 and then by passing through the grease enclosed in the grease box 58. Furthermore, the presence of this grease which is deposited in the form of a thin film on the outer periphery of the rod 50 makes it possible to ensure self-cleaning of this rod by avoiding collage of sludge.
- Means are also provided for draining and cleaning the device described above during prolonged shutdown of the device according to the invention. In fact, in the event of the device stopping, it is necessary to drain and clean the distribution chamber 12 in order to avoid the accumulation of sludge and their drying in this chamber.
- the device therefore comprises cleaning nozzles such as 64 which are preferably arranged on the upper part of the body 34 (see FIG. 3), these nozzles 64 being able to be alternately supplied with compressed air and pressurized water respectively using supply circuits 66, 68 and valves 70 and 72.
- the emptying is carried out by closing the valve 46 for supplying sludge, by opening the valve 70 of the compressed air circuit 66 so as to supply the cleaning nozzles 64 leading to the distribution chamber 12.
- the sludge contained in this chamber is driven through the injector (s) such as 10 and the level of sludge in the chamber 12 drops to the upper part of the holes 48 on which the injectors open.
- the compressed air inlet valve 70 is then closed, the injectors are closed by means of the rods 50, the drain valve 38 is opened and the cleaning water inlet valve 72 is opened .
- This water introduced into the distribution chamber 12, using the nozzles 64 cleans this chamber and the debris is expelled towards the sewer through the evacuation pipe 36.
- the valve 72 is closed. .
- the sludge supply valve 46 is opened and the device can be returned to operation on the understanding that the rods 50 are in the retracted position.
- the injector sludge supply can then resume.
- this system of cleaning nozzles 64 can also be used for the introduction under pressure of a disinfectant product into the distribution chamber.
- the device which is the subject of the invention makes it possible to produce a homogeneous supply and at constant flow rate of the sludge into the combustion chamber of an incinerator.
- This supply takes place in the form of a rod which is spun through each of the injectors.
- a calibrated and homogeneous supply is obtained.
- the characteristic according to which the nozzle of each injector is of conical shape allows penetration of the hot gases coming from the combustion chamber between the external periphery of the rod formed and the wall of the nozzle of the injector, which ensures the formation of a superficial crust on the rod improving the combustion of the latter and also effecting a self-cleaning of the end of each injector.
- a plurality of injectors regularly distributed along the base of the distribution chamber it is preferable to use a plurality of injectors regularly distributed along the base of the distribution chamber. Excellent results have been obtained on an incineration furnace having a flow rate of 6 tonnes / hour of household waste with a device according to the invention, as described above comprising 22 injectors each having an internal diameter of 22 mm , the hourly sludge injection rate then being 1 ton / hour, the injected sludge having a dry matter content of 25%.
- the injection pressure in the distribution chamber 12 was 0.8 bar.
- the device which is the subject of the present invention can operate without automation with a simple overpressure alarm in the body of the distribution chamber and a system for controlling the stopping of the sludge pump in this chamber in the event that the critical threshold, this alarm can be controlled from a pressure sensor 74.
- this automation allows: - maintain an appropriate pressure inside the distribution chamber 12; - ensure that an injector is cleaned as soon as the pressure rises; - Check the stroke of the rods 50 for cleaning and sealing the injectors; - trigger the alarms; - controlling the sludge feed pump in the distribution chamber 12; - to clean the injector tubes at determined frequencies.
- the automation equipment used comprises pressure sensors 74 placed at the entrance to the distribution chamber, a programmable controller 76 and a cooling control system comprising in particular the thermostatic valve 32 provided on the supply line 30 for injector coolant.
- a programmed cleaning cycle can be provided, the execution of which makes it possible to avoid reaching the pressure and maintain a constant calibration of the sludge (s) introduced by the injector (s) into the incinerator.
- magnetic end-of-travel sensors are shown diagrammatically at 80 in FIG. 3, making it possible to detect operating anomalies of the cleaning means and to facilitate interventions.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Treatment Of Sludge (AREA)
- Gasification And Melting Of Waste (AREA)
- Incineration Of Waste (AREA)
- Chemical Treatment Of Metals (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT90402609T ATE84867T1 (de) | 1989-09-21 | 1990-09-20 | Vorrichtung zum einduesen von schlamm in einen muellverbrennungsofen. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MC892072A MC2073A1 (fr) | 1989-09-21 | 1989-09-21 | Injecteur de boues baria |
MC207289 | 1989-09-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0419365A1 true EP0419365A1 (de) | 1991-03-27 |
EP0419365B1 EP0419365B1 (de) | 1993-01-20 |
Family
ID=19738199
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90402609A Expired - Lifetime EP0419365B1 (de) | 1989-09-21 | 1990-09-20 | Vorrichtung zum Eindüsen von Schlamm in einen Müllverbrennungsofen |
Country Status (13)
Country | Link |
---|---|
US (1) | US5186111A (de) |
EP (1) | EP0419365B1 (de) |
JP (1) | JP3117458B2 (de) |
AT (1) | ATE84867T1 (de) |
CA (1) | CA2042023A1 (de) |
DE (1) | DE69000802T2 (de) |
DK (1) | DK0419365T3 (de) |
ES (1) | ES2037536T3 (de) |
GR (1) | GR3006930T3 (de) |
HU (1) | HUT56615A (de) |
MC (1) | MC2073A1 (de) |
RU (1) | RU2013703C1 (de) |
WO (1) | WO1991004445A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2700605A1 (fr) * | 1993-01-19 | 1994-07-22 | Cnim | Dispositif d'injection de boues dans un incinérateur de déchets. |
EP1036985A1 (de) * | 1999-03-15 | 2000-09-20 | Constructions Industrielles De La Mediterranee- Cnim | Schlammeinspritzdüse zur gleichzeitigen Verbrennung von Schlamm und Abfall |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2758100B1 (fr) * | 1997-01-06 | 1999-02-12 | Youssef Bouchalat | Procede de traitement et valorisation energetique optimisee des boues de stations d'epuration urbaine et industrielle |
US6553924B2 (en) | 1998-10-19 | 2003-04-29 | Eco/Technologies, Llc | Co-combustion of waste sludge in municipal waste combustors and other furnaces |
US6279493B1 (en) | 1998-10-19 | 2001-08-28 | Eco/Technologies, Llc | Co-combustion of waste sludge in municipal waste combustors and other furnaces |
ES2164620T3 (es) | 2000-05-24 | 2006-01-16 | Ondeo Degremont | Dispositivo para realizar la inyeccion de lodos en un incinerador. |
US8356975B2 (en) * | 2010-03-23 | 2013-01-22 | United Technologies Corporation | Gas turbine engine with non-axisymmetric surface contoured vane platform |
US8851406B2 (en) | 2010-04-13 | 2014-10-07 | Aerojet Rocketdyne Of De, Inc. | Pump apparatus including deconsolidator |
US8939278B2 (en) | 2010-04-13 | 2015-01-27 | Aerojet Rocketdyne Of De, Inc. | Deconsolidation device for particulate material extrusion pump |
US9932974B2 (en) | 2014-06-05 | 2018-04-03 | Gas Technology Institute | Duct having oscillatory side wall |
JP7139542B1 (ja) | 2022-06-07 | 2022-09-20 | 日建リース工業株式会社 | 魚介類用の運搬水槽 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3575119A (en) * | 1968-07-05 | 1971-04-13 | Andrew W Marr Jr | Electrical arc apparatus for disintegrating and incinerating a slurry organic material |
DE2702266A1 (de) * | 1977-01-20 | 1978-07-27 | Niklaus Seiler | Trocknungs- und verbrennungsanlage |
US4479441A (en) * | 1984-03-13 | 1984-10-30 | Enercon Systems, Incorporated | Stepped hearth incinerator with positive clean-out of air feed-tubes |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3822654A (en) * | 1973-01-08 | 1974-07-09 | S Ghelfi | Burner for burning various liquid and gaseous combustibles or fuels |
FR2316540A2 (fr) * | 1975-02-28 | 1977-01-28 | Heurtey Efflutherm | Procede et dispositif d'evaporation et d'oxydation thermique d'effluents liquides et de dechets solides sous forme pulverulente |
US4206711A (en) * | 1978-10-04 | 1980-06-10 | Angelo J. Noce | Method and apparatus for processing waste fluid |
US4462318A (en) * | 1981-12-31 | 1984-07-31 | Ensco, Inc. | Waste disposal |
US4785746A (en) * | 1985-04-25 | 1988-11-22 | Trw Inc. | Carbonaceous slurry combustor |
-
1989
- 1989-09-21 MC MC892072A patent/MC2073A1/xx unknown
-
1990
- 1990-09-20 JP JP02513626A patent/JP3117458B2/ja not_active Expired - Fee Related
- 1990-09-20 ES ES199090402609T patent/ES2037536T3/es not_active Expired - Lifetime
- 1990-09-20 HU HU907932A patent/HUT56615A/hu unknown
- 1990-09-20 WO PCT/FR1990/000680 patent/WO1991004445A1/fr active Application Filing
- 1990-09-20 EP EP90402609A patent/EP0419365B1/de not_active Expired - Lifetime
- 1990-09-20 DE DE9090402609T patent/DE69000802T2/de not_active Expired - Fee Related
- 1990-09-20 US US07/684,961 patent/US5186111A/en not_active Expired - Lifetime
- 1990-09-20 AT AT90402609T patent/ATE84867T1/de not_active IP Right Cessation
- 1990-09-20 DK DK90402609.3T patent/DK0419365T3/da active
- 1990-09-20 CA CA002042023A patent/CA2042023A1/fr not_active Abandoned
-
1991
- 1991-05-17 RU SU914895578A patent/RU2013703C1/ru not_active IP Right Cessation
-
1993
- 1993-01-28 GR GR930400177T patent/GR3006930T3/el unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3575119A (en) * | 1968-07-05 | 1971-04-13 | Andrew W Marr Jr | Electrical arc apparatus for disintegrating and incinerating a slurry organic material |
DE2702266A1 (de) * | 1977-01-20 | 1978-07-27 | Niklaus Seiler | Trocknungs- und verbrennungsanlage |
US4479441A (en) * | 1984-03-13 | 1984-10-30 | Enercon Systems, Incorporated | Stepped hearth incinerator with positive clean-out of air feed-tubes |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2700605A1 (fr) * | 1993-01-19 | 1994-07-22 | Cnim | Dispositif d'injection de boues dans un incinérateur de déchets. |
EP1036985A1 (de) * | 1999-03-15 | 2000-09-20 | Constructions Industrielles De La Mediterranee- Cnim | Schlammeinspritzdüse zur gleichzeitigen Verbrennung von Schlamm und Abfall |
FR2791124A1 (fr) * | 1999-03-15 | 2000-09-22 | Mediterranee Const Ind | Agencement de repartition et d'injection de boues dans la goulotte d'alimentation d'un four de co-incineration de boues et de dechets |
Also Published As
Publication number | Publication date |
---|---|
CA2042023A1 (fr) | 1991-03-22 |
JP3117458B2 (ja) | 2000-12-11 |
HU907932D0 (en) | 1991-08-28 |
HUT56615A (en) | 1991-09-30 |
DE69000802T2 (de) | 1993-06-09 |
WO1991004445A1 (fr) | 1991-04-04 |
US5186111A (en) | 1993-02-16 |
DK0419365T3 (da) | 1993-05-10 |
ATE84867T1 (de) | 1993-02-15 |
EP0419365B1 (de) | 1993-01-20 |
MC2073A1 (fr) | 1990-10-03 |
DE69000802D1 (de) | 1993-03-04 |
JPH04502958A (ja) | 1992-05-28 |
GR3006930T3 (de) | 1993-06-30 |
ES2037536T3 (es) | 1993-06-16 |
RU2013703C1 (ru) | 1994-05-30 |
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