EP0851999A1 - Thermischen crackanlagen nachgeschalteter rohrbündel-wärmeübertrager - Google Patents
Thermischen crackanlagen nachgeschalteter rohrbündel-wärmeübertragerInfo
- Publication number
- EP0851999A1 EP0851999A1 EP96931808A EP96931808A EP0851999A1 EP 0851999 A1 EP0851999 A1 EP 0851999A1 EP 96931808 A EP96931808 A EP 96931808A EP 96931808 A EP96931808 A EP 96931808A EP 0851999 A1 EP0851999 A1 EP 0851999A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- ramming
- coating
- tube
- bundle heat
- 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
- 238000004227 thermal cracking Methods 0.000 title claims abstract description 7
- 238000009434 installation Methods 0.000 title abstract description 3
- 239000011248 coating agent Substances 0.000 claims abstract description 28
- 238000000576 coating method Methods 0.000 claims abstract description 28
- 150000001875 compounds Chemical class 0.000 claims abstract description 21
- 230000003628 erosive effect Effects 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000009970 fire resistant effect Effects 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 22
- 239000002585 base Substances 0.000 description 15
- 239000000571 coke Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 239000005977 Ethylene Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 208000018777 Vulvar intraepithelial neoplasia Diseases 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- -1 naphtha Chemical class 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4935—Heat exchanger or boiler making
- Y10T29/49364—Tube joined to flat sheet longitudinally, i.e., tube sheet
Definitions
- the invention relates to a thermal cracking system downstream tube bundle heat exchanger (RWU) with a tube bundle of heat exchanger tubes held between two tube plates, a method for coating a tube plate and the use of a ramming compound
- RWUs of this type are used, for example, in ethylene plants for generating ethylene by thermal splitting downstream of a transfer line of a cracking furnace and are referred to as cracked gas coolers
- Cracked gas coolers must meet extraordinarily high requirements in terms of construction and material properties.
- the hot reaction mixture (approx. 850 ° C) emerging from the cracking furnace due to pyrolysis of hydrocarbons such as naphtha, heavy gasoline or ethane must be cooled rapidly in the cracked gas coolers in order to avoid unwanted side reactions
- Cracked gas cooler or RWU serves as a waste heat boiler, in which high-pressure steam is generated by the evaporation of feed water guided on the jacket side
- the cracked gas coming out of the cracking furnace at high speed usually enters the cracked gas cooler from below via a transfer line into an axially arranged hood connection and hits the lower tube plate in order to be passed through an oil wash and further processing after passing through the heat exchanger tubes of the cracked gas cooler
- heat exchangers for cooling synthesis gas generated in a coal gasification plant are known, in which the tube plate on the inside of the gas with a ceramic layer consists of individual, side-by-side, parallelepiped-shaped grommets, each grommet having a conical opening , which narrows into a pipe section that protrudes into a heat exchanger pipe.
- This solution does not provide a gas-tight seal between the individual cuboid elements. In cracked gas coolers of an olefin plant, this would lead to coke formation in the interstices and destroy the materials.
- the ends of the spouts used would form a tear-off edge in the tube, which would cause strong turbulence at the flow speeds of about 300 m / s, which would result in additional erosions.
- the invention takes a different approach by striving for effective protection against erosion by reinforcing the base plate.
- the erosions on the lower tube plate necessitated periodic shutdowns of the cracked gas coolers, which has been used to bring the base plates back to the required wall thickness by means of build-up welding.
- This process is complex and cannot be satisfactory with regard to the resistance of the material applied by means of cladding.
- the base plate not only acts like a baffle plate and is therefore exposed to particular erosion, but at the same time should be relatively thin in order to be as possible to be able to achieve a low interface temperature. This is desirable for reasons relating to the construction of the apparatus and is also advantageous because the gases entering should be cooled as quickly as possible without first undergoing undesirable side reactions.
- the coating is carried out by means of a ramming compound with a thickness of 10 to 50, preferably 15 to 30 mm.
- anchors preferably in V, T, S or Y shape, in particular with a diameter of about 5 mm, or a sheet metal structure in a honeycomb structure, preferably with a height of 5, can be placed on the tube plate up to 10 mm.
- Such anchors are known as ECO-VINs for various lining thicknesses in linings welded to sheet steel with masonry in firing systems, the legs of the anchor being able to be bent to approximately 60 ° C. for better anchoring of the ramming mass.
- the anchors can be welded onto the lower tube plate in a non-spread or spread version.
- the coating with the ramming mass made of a chemically bound, erosion-resistant refractory material is applied either by hand or for larger areas by spraying and compacted manually, for example using flat steel and a hammer, or using machine tools.
- ramming compounds sometimes also known as ramming compounds
- chemically setting compounds consisting primarily of inorganic raw materials are used.
- the setting takes place in the presence of air.
- An important raw material is corundum, for example.
- a typical composition of such compositions is for example 85 percent by weight Al 2 O 3, 7 percent by weight SiO 2, 0.3 percent by weight Fe 2 ⁇ 3, 3.1 percent by weight MgO, 4.5 percent by weight P2O5, and 0.1 percent by weight alkali (about values).
- the maximum grain size of the individual components should not exceed 4 mm.
- This inorganic mixture is mixed with water for processing or for the manufacture of the ramming mass and then processed. After the ramming compound has been applied, it is usually allowed to set for at least 24 hours.
- the thermal conductivity of the set ramming mass or the coating is between 1.5 and 3.5 W / mK.
- the abrasion of this coating is less than 8 cm 3 (according to ASTM C-704)
- a suitable ramming compound is, for example, RESCO-CAST, a product of RESCO Products Inc.
- Other suitable products on the market are the PLIRAM Cyclone-Mix D from Plibrico GmbH known as ramming compound.
- the products mentioned are from practice z. B for the internal lining of FCC (fluid catalytic cracker) system parts are known. System components are lined in which the fluidized FCC catalyst moves at temperatures of approximately 750 ° C. at a speed of 20 to 30 m / s however, no indication that the ramming masses mentioned are suitable for carrying out the subject matter of the invention.
- FCC fluid catalytic cracker
- the ramming mass can, for. B steel needles or corrugated steel fibers (C mix), preferably in a proportion of 1 to 2% by weight, are added
- the diameter of the transfer line coming from the cracking furnace usually widens to the diameter of the tube plate in the form of a hood connector
- the invention further relates to a method for coating a tube plate in an RWU.
- the tube openings are sealed with plugs on the inlet-side tube plate. These plugs protrude at least to the height of the layer thickness of the coating to be applied.
- the ramming compound is then applied. This can be done manually using a spatula and trowel or also by spraying on, followed by mechanical compression of the ramming compound, for example by hammer blows transmitted by flat iron. After the ramming compound has set, usually at least 24 hours, the plugs are removed and the ramming compound is dried or baked, if necessary
- the ramming compounds described are ideally suited for coating floor slabs in downstream tube bundle heat exchangers
- V-anchors or ECO-VIN anchors with the embodiment shown in FIGS. 1 and 2 of the drawing made of an austenitic steel (1 4841) are welded onto a base plate.
- the inner tubes of the RWU are closed by conical wooden plugs so that the ramming mass is on both the anchors as well as on the plugs.
- the ramming mass consisting of PLIRAM Cyclone-Mix D is mixed with 2% by weight corrugated steel fibers C-Mix 25 (material 1 4841)
- the ramming compound is applied manually using a spatula and trowel.
- the ramming compound applied is then compacted in sections to form a void-free coating using hammer blows transferred using flat iron.
- FIG. 1 shows a tube sheet according to the invention in a top view (viewed from below).
- FIG. 2 shows a section through a cracked gas cooler with a coating according to the invention in the area of the base plate.
- the base plates equipped according to the invention are also subject to erosion by coke particles. Compared to the unprotected metallic material of the base plate, the erosion of base plates coated according to the invention is significantly slower, so that there is an improved availability of the corresponding system parts. In addition, removal and reapplication of the coating according to the invention is possible in the event of wear.
- the problem of limit temperature described at the outset is alleviated. This results in a further advantage that the metal base plate no longer has to be as thin, but can be made stronger. Due to the structural stabilization achieved in this way, the tie rods necessary for stabilizing thin base plates can be dispensed with at least in part.
Landscapes
- Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Vehicle Body Suspensions (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Electroplating Methods And Accessories (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19534823A DE19534823C2 (de) | 1995-09-20 | 1995-09-20 | Rohrbündel-Wärmeübertrager |
DE19534823 | 1995-09-20 | ||
PCT/EP1996/004045 WO1997011330A1 (de) | 1995-09-20 | 1996-09-14 | Thermischen crackanlagen nachgeschalteter rohrbündel-wärmeübertrager |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0851999A1 true EP0851999A1 (de) | 1998-07-08 |
EP0851999B1 EP0851999B1 (de) | 2001-06-20 |
Family
ID=7772623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96931808A Expired - Lifetime EP0851999B1 (de) | 1995-09-20 | 1996-09-14 | Thermischen crackanlagen nachgeschalteter rohrbündel-wärmeübertrager, verfahren zur beschichtung einer rohrplatte und verwendung einer stampfmasse |
Country Status (15)
Country | Link |
---|---|
US (1) | US6155337A (de) |
EP (1) | EP0851999B1 (de) |
JP (1) | JP3891589B2 (de) |
AT (1) | ATE202415T1 (de) |
AU (1) | AU700338B2 (de) |
CA (1) | CA2230134C (de) |
CZ (1) | CZ294937B6 (de) |
DE (3) | DE19534823C2 (de) |
DK (1) | DK0851999T3 (de) |
ES (1) | ES2159042T3 (de) |
GR (1) | GR3036096T3 (de) |
HU (1) | HU226917B1 (de) |
PL (1) | PL183641B1 (de) |
PT (1) | PT851999E (de) |
WO (1) | WO1997011330A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19962391A1 (de) * | 1999-12-23 | 2001-06-28 | Behr Industrietech Gmbh & Co | Ladeluftkühler |
DE10028568C1 (de) * | 2000-06-09 | 2001-06-07 | Uwe Schwerdtfeger | Röhrchen-Wärmetauscher |
DE102005032118A1 (de) * | 2005-07-07 | 2007-01-11 | Ruhr Oel Gmbh | Rohrbündelwärmeübertrager mit verschleißbeständiger Rohrbodenauskleidung |
DE102006055973A1 (de) * | 2006-11-24 | 2008-05-29 | Borsig Gmbh | Wärmetauscher zur Kühlung von Spaltgas |
US9575479B2 (en) * | 2013-11-27 | 2017-02-21 | General Electric Company | System and method for sealing a syngas cooler |
DE102017003380A1 (de) * | 2017-04-06 | 2018-10-11 | Linde Aktiengesellschaft | Wärmetauscher, Verwendung eines Wärmetauschers und Verfahren zur Herstellung eines Wärmetauschers |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1894956A (en) * | 1929-01-16 | 1933-01-24 | Babcock & Wilcox Co | Air heater |
US3017696A (en) * | 1957-03-11 | 1962-01-23 | Griscom Russell Co | Corrosion-resistant surface |
GB1175157A (en) * | 1966-03-19 | 1969-12-23 | Ernst Kreiselmaier | Improvements in or relating to Steam Condensers |
GB1195309A (en) * | 1967-11-29 | 1970-06-17 | Idemitsu Petrochemical Co | Quenching Apparatus for Use with Thermal Cracking Systems |
US3751295A (en) * | 1970-11-05 | 1973-08-07 | Atomic Energy Commission | Plasma arc sprayed modified alumina high emittance coatings for noble metals |
DE2160372C3 (de) * | 1971-12-02 | 1975-07-17 | 1000 Berlin | Vorrichtung zur gleichmäßigen Durchströmung eines Rohrbündelwärmetauschers |
DE2458308A1 (de) * | 1974-12-10 | 1976-06-24 | Siegener Ag Geisweid | Gaskuehler zum kuehlen von spaltgas oder synthesegas |
US3990862A (en) * | 1975-01-31 | 1976-11-09 | The Gates Rubber Company | Liquid heat exchanger interface and method |
US4124068A (en) * | 1977-05-16 | 1978-11-07 | Uop Inc. | Heat exchange tube for fluidized bed reactor |
US4479337A (en) * | 1980-04-14 | 1984-10-30 | Standard Oil Company (Indiana) | Refractory anchor |
JPS58205084A (ja) * | 1982-05-26 | 1983-11-29 | Hitachi Ltd | 薄膜蒸発式熱交換器 |
IT1209532B (it) * | 1984-04-20 | 1989-08-30 | Snam Progetti | Processo per la sintesi di urea e materiale utilizzato nello stesso. |
DE3531150A1 (de) * | 1985-08-31 | 1987-03-05 | Kreiselmaier Ernst Gmbh Co | Verfahren zur beschichtung von rohrboeden od.dgl. von kondensatoren, kuehlern, waermetauschern od.dgl. mit einem korrosionsschutzmittel |
US4753849A (en) * | 1986-07-02 | 1988-06-28 | Carrier Corporation | Porous coating for enhanced tubes |
DE3640970A1 (de) * | 1986-11-29 | 1988-06-09 | Gutehoffnungshuette Man | Rohrbuendelwaermetauscher |
DE3842727A1 (de) * | 1988-12-19 | 1990-06-21 | Borsig Gmbh | Waermetauscher insbesondere zum kuehlen von spaltgas |
US5141049A (en) * | 1990-08-09 | 1992-08-25 | The Badger Company, Inc. | Treatment of heat exchangers to reduce corrosion and by-product reactions |
JPH0570248A (ja) * | 1991-04-02 | 1993-03-23 | Harima Ceramic Co Ltd | 高炉出銑樋用不定形耐火物 |
EP0567674B1 (de) * | 1992-04-29 | 1994-02-23 | Deutsche Babcock-Borsig Aktiengesellschaft | Wärmetauscher zum Kühlen von in einer Kohlevergasungsanlage erzeugtem Synthesegas |
DE4404068C1 (de) * | 1994-02-09 | 1995-08-17 | Wolfgang Engelhardt | Wärmetauscher |
US5518066A (en) * | 1994-05-27 | 1996-05-21 | Connell Limited Partnership | Heat exchanger |
US5699852A (en) * | 1996-08-22 | 1997-12-23 | Korea Institute Of Energy Research | Heat exchanger having a resin-coated pipe |
-
1995
- 1995-09-20 DE DE19534823A patent/DE19534823C2/de not_active Expired - Lifetime
- 1995-09-20 DE DE29515406U patent/DE29515406U1/de not_active Expired - Lifetime
-
1996
- 1996-09-14 AU AU70855/96A patent/AU700338B2/en not_active Ceased
- 1996-09-14 WO PCT/EP1996/004045 patent/WO1997011330A1/de active IP Right Grant
- 1996-09-14 DE DE59607138T patent/DE59607138D1/de not_active Expired - Lifetime
- 1996-09-14 DK DK96931808T patent/DK0851999T3/da active
- 1996-09-14 CZ CZ1998866A patent/CZ294937B6/cs not_active IP Right Cessation
- 1996-09-14 PL PL96326272A patent/PL183641B1/pl not_active IP Right Cessation
- 1996-09-14 AT AT96931808T patent/ATE202415T1/de active
- 1996-09-14 EP EP96931808A patent/EP0851999B1/de not_active Expired - Lifetime
- 1996-09-14 PT PT96931808T patent/PT851999E/pt unknown
- 1996-09-14 ES ES96931808T patent/ES2159042T3/es not_active Expired - Lifetime
- 1996-09-14 CA CA002230134A patent/CA2230134C/en not_active Expired - Fee Related
- 1996-09-14 HU HU9903453A patent/HU226917B1/hu not_active IP Right Cessation
- 1996-09-14 JP JP51237997A patent/JP3891589B2/ja not_active Expired - Fee Related
-
1998
- 1998-09-14 US US09/029,264 patent/US6155337A/en not_active Expired - Fee Related
-
2001
- 2001-06-21 GR GR20010400937T patent/GR3036096T3/el unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9711330A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP3891589B2 (ja) | 2007-03-14 |
CZ86698A3 (cs) | 1999-08-11 |
GR3036096T3 (en) | 2001-09-28 |
HUP9903453A3 (en) | 2001-10-29 |
PL183641B1 (pl) | 2002-06-28 |
HU226917B1 (en) | 2010-03-01 |
AU7085596A (en) | 1997-04-09 |
DE19534823A1 (de) | 1997-03-27 |
ES2159042T3 (es) | 2001-09-16 |
EP0851999B1 (de) | 2001-06-20 |
DE19534823C2 (de) | 2002-08-22 |
AU700338B2 (en) | 1998-12-24 |
JPH11512514A (ja) | 1999-10-26 |
ATE202415T1 (de) | 2001-07-15 |
CA2230134C (en) | 2008-03-25 |
DE59607138D1 (de) | 2001-07-26 |
CA2230134A1 (en) | 1997-03-27 |
US6155337A (en) | 2000-12-05 |
DK0851999T3 (da) | 2001-09-03 |
PL326272A1 (en) | 1998-08-31 |
DE29515406U1 (de) | 1997-01-30 |
PT851999E (pt) | 2001-09-28 |
CZ294937B6 (cs) | 2005-04-13 |
WO1997011330A1 (de) | 1997-03-27 |
HUP9903453A2 (hu) | 2000-04-28 |
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