EP0799403B1 - Heissbranddüse mit wechselrohr - Google Patents

Heissbranddüse mit wechselrohr Download PDF

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Publication number
EP0799403B1
EP0799403B1 EP96938173A EP96938173A EP0799403B1 EP 0799403 B1 EP0799403 B1 EP 0799403B1 EP 96938173 A EP96938173 A EP 96938173A EP 96938173 A EP96938173 A EP 96938173A EP 0799403 B1 EP0799403 B1 EP 0799403B1
Authority
EP
European Patent Office
Prior art keywords
tube
furnace
hot
nozzle mouthpiece
mouthpiece
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
EP96938173A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0799403A1 (de
Inventor
Udo Leibling
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.)
AGRICHEMA MATERIALFLUSSTECHNIK GMBH & CO. KG
Original Assignee
Agrichema Materialflusstechnik GmbH
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 Agrichema Materialflusstechnik GmbH filed Critical Agrichema Materialflusstechnik GmbH
Publication of EP0799403A1 publication Critical patent/EP0799403A1/de
Application granted granted Critical
Publication of EP0799403B1 publication Critical patent/EP0799403B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/18—Charging particulate material using a fluid carrier
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D21/00—Arrangement of monitoring devices; Arrangement of safety devices
    • F27D21/02—Observation or illuminating devices
    • F27D2021/023—Closable inserting openings, e.g. for the introduction of lances, sensors or burners

Definitions

  • the present invention relates to hot fire nozzles in accordance with the The preamble of claim 1.
  • hot fire nozzles to remove caking in process engineering Ovens, e.g. Cement kilns and the like have been around for years proven.
  • hot fire nozzles made of cast material embedded in breakthroughs in the masonry of a procedural furnace and backfilled with refractory compound, so that a secure fit in the masonry is guaranteed.
  • the end of the hot fire nozzle protruding outside the furnace is usually included for fastening and to prevent kickback welded to a box placed on the outer wall of the furnace, through which the The hot fire nozzle protrudes through it and is usually made of a metal material existing outer cladding of the furnace or the chambers in turn is welded.
  • the hot fire nozzle as such consists of one Mouthpiece that protrudes into the oven and an outer piece that is for connection protrudes outwards over the furnace wall with an air blast device, whereby the two individual parts are cohesive, i.e. through a weld, together are connected.
  • This weld seam lies with conventional furnace wall thicknesses and the well-known hot fire nozzles usually in masonry. Because of Chemical components of the masonry can have negative effects come on the weld seam, which leads to accelerated corrosion and this leads to reduced service life of the hot fire nozzles.
  • the change a corroded or worn hot fire nozzle of this type is due the principle of installation directly into the masonry is very complex, since that Kiln masonry has to be broken up, which takes time and money connected is.
  • each the entire device including mouthpiece and outwardly projecting tube for connection can be removed and replaced with an air blower, although this is significant Wear on hot fire nozzles is usually on the inside of the furnace Mouthpiece occurs, so that an exchange of this mouthpiece in the Rule would suffice to ensure the functionality and efficiency of a hot fire nozzle restore.
  • hot fire nozzles which on the one hand have the advantages the hot fire nozzles in the exchange box, i.e. easy interchangeability only allow worn parts of the hot fire nozzle, but on the other hand simple are constructed and a reduced space requirement and a reduced To have weight.
  • the object of the present invention is to install a hot fire nozzle to be provided in process engineering furnaces, the wearing parts of which are simple can be replaced, which is simple and light in weight.
  • a hot fire or expansion guide nozzle is provided, the one straight but also one preferably angled by 90 ° Blow out angle can have.
  • the hot fire nozzle according to the invention consists of an interchangeable tube, which is inserted into a furnace wall and through a Flat iron ring held on the sheet steel wall surrounding the furnace wall is, the flat iron ring with both the exchangeable tube and with the Sheet steel wall is welded.
  • the replacement tube is in the inserted state hence a certain amount outwards over the sheet steel wall of the furnace before, a welded on this outwardly projecting end of the interchangeable tube or cast-on connecting flange is provided in which one suitable number of through holes are arranged.
  • the inserted tube protrudes in the direction of the masonry into the furnace wall, with the end protruding towards the furnace interior the exchangeable tube preferably extends approximately to half the wall wall thickness and in a furnace wall inside or recess ends.
  • the diameter of the exchangeable tube is preferably on its inside of the furnace constricted end, being constricted between the outer edge of the Diameter and the outer edge of the exchangeable tube on the circumference distributed, preferably U-plates, possibly provided with a hole, are provided.
  • the exchangeable tube is preferably also preferred on its inside diameter six ribs equipped on the one hand to stabilize the interchangeable tube serve with regard to the removal of the wall loads and the other one Guide function for those inserted into the exchangeable tube from the inside of the furnace Have pipes. Between the ribs you can go over to the outside the furnace wall protruding area of the exchangeable tube bores, preferably six in number, can be provided, on the one hand for passive ventilation of the Exchangeable tube interior, but also active ventilation of the Interchangeable tube interior and the hot fire nozzle parts arranged in the interchangeable tube can serve. Thanks to the ventilation provided, Nozzle mouthpiece temperatures and thus the susceptibility to wear considerably to reduce.
  • the hot-fire nozzle it is a short one Nozzle mouthpiece provided, the installation depth of the distance between the furnace inner wall and the end of the exchangeable tube protruding into the furnace wall corresponds.
  • the nozzle mouthpiece is preferably made of cast chrome nickel steel manufactured because the material has an advantageous heat and wear behavior shows.
  • a preference is given to the short nozzle mouthpiece heat-resistant pipe welded, which from the inside of the furnace into the Furnace wall attached replacement tube is inserted and the length so it is dimensioned that its free end protrudes beyond the exchangeable tube.
  • the Nozzle mouthpiece can thus be kept very short and has a low one Unit weight, so that it is a wearing part despite the special choice of materials can be replaced inexpensively.
  • the welded interchangeable tube can cut off immediately behind the weld seam and to a new nozzle mouthpiece be welded on. Due to the thread length on the pipe or The tube can be used several times, in particular for at least three hot fire nozzles be used. The one protruding outwards over the exchangeable tube The end of this tube preferably has an external thread, whereby it is 4-inch external thread or another suitable thread can.
  • the weld seam between the nozzle mouthpiece and the pipe lies after installation inside the interchangeable tube so that there is no chemical exposure of the masonry can come to the weld.
  • the end of the short nozzle mouthpiece facing the exchangeable tube is of this type formed that there is an engagement between this nozzle end and the End of the exchangeable tube protruding inside the furnace comes.
  • This is for Interchangeable tube-facing end of the nozzle mouthpiece with teeth or one Provide sprocket, but when installed in the constricted on the The end of the interchangeable tube engages tabs, so that The hot fire nozzle mouthpiece is locked against rotation when installed is.
  • different pressure positions of the nozzle mouthpiece are relative to the interchangeable tube possible.
  • the one facing the inside of the furnace End of the hot fire nozzle mouthpiece with a recess, preferably a circumferential groove, into which the constricted circumference of the The inside of the furnace-facing end of the interchangeable tube engages when the hot-fire nozzle is installed.
  • this groove preferably fireproof round seal inserted, so that a gas-tight seal between the exchangeable tube and the hot-fire nozzle mouthpiece is guaranteed.
  • This screw socket unit is attached to the external thread of the nozzle mouthpiece welded on pipe and tightened so far that it for a sealing, non-positive connection between the nozzle mouthpiece and the exchange tube comes.
  • the the exchangeable tube and the nozzle mouthpiece then tighten the screw connection with the help of screw bolts in the through holes in the flanges on the threaded sleeve as well locked to the interchangeable tube so that it is not in operation of the hot fire nozzles can lead to a creeping solution of the connection.
  • the inventive one Device with similarly simple exchange of worn parts essential more simply constructed and has lighter individual parts.
  • the hot fire nozzles with a made of refractory bricks To provide sheathing in the corresponding recesses the installation position of the hot fire nozzle can be used around.
  • the refractory bricks to coat the hot fire nozzle with appropriate anchors in the holes described above in the on the circumference of the Diameter of the exchangeable tube hooked distributed tabs, where the joints are filled with refractory compound.
  • Hot-fire nozzle mouthpieces Another facilitating the exchange of Hot-fire nozzle mouthpieces would be possible in that the latter Refractory bricks can be connected directly to the hot-fire nozzle mouthpiece and be exchanged with it.
  • the one for exchanging the hot-fire nozzle mouthpieces necessary work is reduced in accordance with the present Invention therefore on a loosening of the corresponding hot fire nozzle surrounding refractory bricks as well as unscrewing the unit bracing threaded sleeve, whereupon the hot fire nozzle with the welded, heat-resistant pipe in a simple and advantageous way can be removed from their installation seat.
  • a reinforcement on the face of the hot-fire nozzle mouthpiece for fixing refractory material to protect the nozzle mouthpiece from heat to provide This reinforcement advantageously consists of a honeycomb grid, which is made from individual correspondingly folded metal strips, the are connected to each other in a positive manner.
  • the refractory mass can after installation of the nozzle mouthpiece, but also from the installation be applied to the same.
  • Fig. 1 the embodiment of a hot fire nozzle is in the installation situation shown.
  • an exchangeable tube 1 sits in a furnace wall 2 and is over a flat iron ring 3 welded to a sheet steel wall 4, the outside surrounds the furnace wall 2.
  • the end of the interchangeable tube which is approximately is in the middle of the furnace wall 2, is designed as a retracted area 7.
  • a flange 10 is arranged, which can be welded but also cast on can. Through holes 11 are provided in this flange.
  • ribs 12 are provided distributed around the inner circumference which serve on the one hand to stiffen the interchangeable tube 1 by a bevel in the direction of the opening of the exchangeable tube pointing outwards but also a guide function for tubes 6 inserted into the exchangeable tube to have.
  • the exchangeable tube 1 ends in the illustrated embodiment towards the inside of the furnace in a recess 14 the inside of the furnace wall 2.
  • the interchangeable tube a hot-fire nozzle mouthpiece 5 angled here by 90 ° placed, the interchangeable tube 1 so far inserted into the furnace wall 2 is that the nozzle outlet opening 5a closes exactly with the inside of the furnace.
  • a heat-resistant push-through tube 6 is welded, the length of which is dimensioned in this way is that it extends outward beyond the interchangeable tube.
  • welded heat-resistant tube 6 is a External thread not shown provided.
  • a threaded sleeve 15 is screwed on, which in the direction of the interchangeable tube with a flange 16 and in the the direction opposite the exchangeable tube with a welded flange 17 is provided with an air blast device for connection.
  • the threaded sleeve 15 with the flanges 16 and 17 can on the one hand as a welded construction, on the other hand but also be made in one piece, for example in cast aluminum.
  • the hot-fire nozzle mouthpiece 5 To Tightening the threaded sleeve 15 is the hot-fire nozzle mouthpiece 5 with the pipe 6 welded to it is held in the interchangeable pipe 1, whereby the constricted end 7 of the interchangeable tube 1 into one on the interchangeable tube side At the end of the hot-fire nozzle mouthpiece provided groove 18 engages, in the groove 18 can be inserted a fireproof round seal.
  • ring gear provided when installing the hot-fire nozzle mouthpiece in the interchangeable tube 1 in the constricted circumference 7 of the Exchangeable tube 1 provided tabs 8 engages so that the hot-fire nozzle mouthpiece 5 can not twist relative to the interchangeable tube 1.
  • Threaded sleeve 15 on the external thread on the hot-fire nozzle mouthpiece 5 welded pipe 6 screwed and tightened
  • Threaded sleeve locked by bolts 19, which are in the through holes 11 of the interchangeable tube flange 10 and through holes in Flange 16 of the threaded sleeve 15 are inserted.
  • bolts 19 the hot fire nozzle mouthpiece with welded, heat-resistant Fix tube 6 non-positively in the exchangeable tube 1 if the threaded sleeve 5 not up to the stop of the threaded sleeve flange 16 and the interchangeable tube flange 10 is tightened.
  • hot-fire nozzle mouthpiece 5 in the installed state of refractory bricks 20 surrounded, the shape of the recess 14 in the furnace wall 2, but also to the contours of the dimensions of the hot-fire nozzle mouthpiece 5 are adapted.
  • the spaces shown between Hot-fire nozzle mouthpiece and shaped stones are fireproof in operation Draw mass filled.
  • heat-resistant tube 6 To replace the hot-fire nozzle mouthpiece 5 with the welded, heat-resistant tube 6 must in the illustrated embodiment only the upper refractory stone 20 loosened and removed , whereupon the hot-fire nozzle mouthpiece with welded Tube 6, after loosening the threaded sleeve 15, in a simple manner can be removed from the interchangeable tube 1 and by a new one Hot brand nozzle mouthpiece can be replaced.
  • Hot-fire nozzle mouthpieces 5 are in the illustrated embodiment therefore easy and quick to do without a complex exchange box construction necessary is.
  • a hot-fire nozzle mouthpiece 5 is provided with a reinforcement 21, the honeycomb grid-like in the illustrated embodiment, in particular single folded sheet metal strip is made at the junctions are positively or cohesively connected.
  • On this reinforcement is in the installed state of the hot fire nozzle mouthpiece refractory applied, held by the reinforcement and protected from peeling is.
  • the refractory is expediently on one in the range of Mouth opening of the nozzle mouthpiece 5 formed web arranged in the inside of the oven is directed.
  • Fig. La shows the embodiment of FIG. 1, however, in a cut Top view. The adjustment of the can be clearly seen in this representation Refractory bricks (20) on the contour of the hot-fire nozzle mouthpiece (5).
  • the hot fire nozzle according to Fig. 1 and la is shown.
  • the difference to the embodiments shown in Fig. 1 and la are the refractory bricks (20) that the hot-fire nozzle mouthpiece (5) in the built Condition in the furnace wall (2) surrounded, with anchors (22), the the attachment of the refractory bricks (20) in their surrounding the hot fire nozzle (5) Position relieved.
  • the refractory bricks (20) must be anchored (22) in the installed state only in the holes (9) in the tabs (8) are hooked onto the interchangeable tube (1). They can be correspondingly simple Refractory bricks (20) when the hot fire nozzle mouthpiece needs to be changed Take out (5) with the tube (6) welded to it.
  • 3a, 3b and 3c is a hot-fire nozzle mouthpiece (5) with one on it welded pipe (6) shown removed.
  • This can be seen at the end of the hot-fire nozzle mouthpiece on the interchangeable tube side (5) provided circumferential groove (18) for engagement with the constricted Area (7) of the exchangeable tube (1).
  • the figures show 3a to 3c but also very clearly a toothed ring (23) which surrounds the groove (18) is created around and the teeth of the engagement in the tabs (8) of the Exchangeable tube (1) in the installed state of the hot fire nozzle mouthpiece (5) serve so that an anti-rotation device ensures relative to the interchangeable tube is.
  • FIGS. 1 and 2 the interchangeable tube according to FIGS. 1 and 2 is shown as an individual part.
  • This representation of the exchangeable tube (1) is particularly clear the arrangement of the ribs distributed on the inner circumference of the exchangeable tube (1) (12) and the formation of the guide bevels (12a) on the ribs (12), the serve to guide the tube (6) when inserting it into the exchangeable tube (1).
  • Figures 5a and 5b show the threaded sleeve (15) of the embodiment 1, including the interchangeable tube-side flange (16) and on the other side of the threaded sleeve (15) arranged welding flange (17) which is used for connection to an air blast device (not shown).
  • Figures 6 and 6b show another embodiment of a hot fire nozzle with interchangeable tube (1).
  • the decisive difference in contrast to the embodiment shown in FIGS. 1 and 2 lies in the alignment the hot-fire nozzle mouthpiece (24) and the shape of the surrounding Refractory bricks (25).
  • the remaining elements, including the interchangeable tube (1) and the tube welded to the hot-fire nozzle mouthpiece (6) correspond to the elements from the exemplary embodiments in FIG. 1 and 2. It is therefore possible to use the same interchangeable tube different Insert nozzle mouthpieces.
  • the refractory bricks (25) of the in Fig. 6 and 6b illustrated embodiment can be analogous to the refractory bricks (20) of Fig.
  • the joints between the hot-fire nozzle mouthpiece (24) and refractory bricks (25) with a refractory grout backfilled during operation of the I-hot-fire nozzle instead of the shaped stones (25) can simple refractory materials for filling the recess (14) in the furnace wall (2) be used when replacing the hot fire nozzle mouthpiece (25) with the heat-resistant tube (6) welded to it Will get removed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Nozzles (AREA)
  • Incineration Of Waste (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Electric Connection Of Electric Components To Printed Circuits (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Bakery Products And Manufacturing Methods Therefor (AREA)
  • Manufacturing And Processing Devices For Dough (AREA)
EP96938173A 1995-11-17 1996-11-11 Heissbranddüse mit wechselrohr Expired - Lifetime EP0799403B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29518283U DE29518283U1 (de) 1995-11-17 1995-11-17 Heißbranddüse mit Wechselrohr
DE29518283U 1995-11-17
PCT/EP1996/004928 WO1997019309A1 (de) 1995-11-17 1996-11-11 Heissbranddüse mit wechselrohr

Publications (2)

Publication Number Publication Date
EP0799403A1 EP0799403A1 (de) 1997-10-08
EP0799403B1 true EP0799403B1 (de) 2000-03-01

Family

ID=8015593

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96938173A Expired - Lifetime EP0799403B1 (de) 1995-11-17 1996-11-11 Heissbranddüse mit wechselrohr

Country Status (10)

Country Link
US (1) US5839893A (da)
EP (1) EP0799403B1 (da)
AT (1) ATE190129T1 (da)
AU (1) AU7569596A (da)
DE (2) DE29518283U1 (da)
DK (1) DK0799403T3 (da)
ES (1) ES2144270T3 (da)
GR (1) GR3033113T3 (da)
PT (1) PT799403E (da)
WO (1) WO1997019309A1 (da)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010012637U1 (de) 2010-09-15 2010-11-18 Agrilux Beteiligungs Gmbh Luftstoßvorrichtung mit einem Luftstoßgerät mit daran angeordneter Heißbranddüse
DE202014002625U1 (de) 2014-03-25 2015-03-27 Agrilux Beteiligungs Gmbh Ausblassystem für Luftstoßgeräte
DE202023107589U1 (de) * 2023-12-21 2024-09-26 Agrichema Schüttguttechnik GmbH & Co. KG Heißbranddüse für die Anordnung in der Wand eines Reaktorbehälters von verfahrenstechnischen Reaktionskammern und -öfen

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10000023A1 (de) * 2000-01-03 2001-07-05 Agrichema Materialflusstechnik Vorrichtung zur Anordnung von Heißbranddüsen oder Expansionsleitdüsen in Durchgangsöffnungen von Reaktionskammern, wie Wärmetauschern für die Zementherstellung und dergleichen
US7968047B2 (en) * 2005-02-10 2011-06-28 Wahl Refractory Solutions, Llc Blaster nozzle

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3166621A (en) * 1961-03-16 1965-01-19 Colorado Fuel & Iron Corp Burner tuyere arrangement for a blast furnace
FR1559679A (da) * 1967-12-08 1969-03-14
US4392636A (en) * 1981-07-22 1983-07-12 Swiss Aluminium Ltd. Apparatus for degassing molten metal
US4586895A (en) * 1985-05-13 1986-05-06 The Cadre Corporation Method of removing slag from oxygen fuel burner
FR2660742B1 (fr) * 1990-04-06 1995-05-05 Savoie Refractaires Perfectionnements a la realisation des ouvreaux de bruleurs ou entourages de tuyeres de fours de reacteurs verticaux.
DE9201690U1 (de) * 1992-02-11 1992-07-16 AGRICHEMA Materialflusstechnik GmbH, 6501 Budenheim Vorrichtung zur Anordnung von Heißbrand- oder Expansionsleitdüsen für den Anschluß von Luftgeräten zur Beseitigung von Materialaufstauungen oder -anbackungen
DE4213007C1 (de) * 1992-04-21 1993-12-16 Tech Resources Pty Ltd Verfahren und Vorrichtung zum Abdichten von Düsen in der umgebenden feuerfesten Ausmauerung
WO1996021132A1 (de) * 1995-01-05 1996-07-11 Vsr Engineering Gmbh Fördertechnik Austauschbare düse für feuerfest ausgekleidete hochtemperaturreaktoren
DE29500257U1 (de) * 1995-01-09 1995-02-23 Agrichema Materialflußtechnik GmbH, 55257 Budenheim Heißbranddüse mit Hitzeschutz
FR2733168B1 (fr) * 1995-04-20 1997-06-27 Financ De Gestion Soc Procede de montage d'une buse d'injection de gaz en traversee d'une paroi et moyens pour la mise en oeuvre de ce procede

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010012637U1 (de) 2010-09-15 2010-11-18 Agrilux Beteiligungs Gmbh Luftstoßvorrichtung mit einem Luftstoßgerät mit daran angeordneter Heißbranddüse
DE202014002625U1 (de) 2014-03-25 2015-03-27 Agrilux Beteiligungs Gmbh Ausblassystem für Luftstoßgeräte
EP2924382A1 (de) 2014-03-25 2015-09-30 Agrilux Beteiligungs GmbH AUSBLASSYSTEM FÜR LUFTSTOßGERÄTE
DE202023107589U1 (de) * 2023-12-21 2024-09-26 Agrichema Schüttguttechnik GmbH & Co. KG Heißbranddüse für die Anordnung in der Wand eines Reaktorbehälters von verfahrenstechnischen Reaktionskammern und -öfen

Also Published As

Publication number Publication date
PT799403E (pt) 2000-08-31
GR3033113T3 (en) 2000-08-31
DK0799403T3 (da) 2000-06-13
DE29518283U1 (de) 1996-01-04
DE59604542D1 (de) 2000-04-06
AU7569596A (en) 1997-06-11
EP0799403A1 (de) 1997-10-08
US5839893A (en) 1998-11-24
ES2144270T3 (es) 2000-06-01
ATE190129T1 (de) 2000-03-15
WO1997019309A1 (de) 1997-05-29

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