WO1998035357A1 - Appareil de traitement d'air contenant de l'hydrogene - Google Patents
Appareil de traitement d'air contenant de l'hydrogene Download PDFInfo
- Publication number
- WO1998035357A1 WO1998035357A1 PCT/JP1998/000485 JP9800485W WO9835357A1 WO 1998035357 A1 WO1998035357 A1 WO 1998035357A1 JP 9800485 W JP9800485 W JP 9800485W WO 9835357 A1 WO9835357 A1 WO 9835357A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- catalyst
- hydrogen
- catalyst layer
- heater
- hydrogen gas
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J12/00—Chemical processes in general for reacting gaseous media with gaseous media; Apparatus specially adapted therefor
- B01J12/007—Chemical processes in general for reacting gaseous media with gaseous media; Apparatus specially adapted therefor in the presence of catalytically active bodies, e.g. porous plates
-
- 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
- G21F9/02—Treating gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/0013—Controlling the temperature of the process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/002—Avoiding undesirable reactions or side-effects, e.g. avoiding explosions, or improving the yield by suppressing side-reactions
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B5/00—Water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00132—Controlling the temperature using electric heating or cooling elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00245—Avoiding undesirable reactions or side-effects
- B01J2219/00259—Preventing runaway of the chemical reaction
- B01J2219/00263—Preventing explosion of the chemical mixture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/322—Basic shape of the elements
- B01J2219/32296—Honeycombs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/324—Composition or microstructure of the elements
- B01J2219/32466—Composition or microstructure of the elements comprising catalytically active material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/324—Composition or microstructure of the elements
- B01J2219/32466—Composition or microstructure of the elements comprising catalytically active material
- B01J2219/32475—Composition or microstructure of the elements comprising catalytically active material involving heat exchange
Definitions
- the present invention relates to an apparatus for treating air containing hydrogen gas, and more particularly to an apparatus for safely treating hydrogen gas contained in air in a containment vessel.
- Background technology If hydrogen gas is contained in the air, hydrogen and oxygen coexist, so the hydrogen will cause a combustion reaction, and will react explosively when the hydrogen concentration exceeds a specified value. Therefore, sufficient consideration must be given to various plants that handle hydrogen gas or generate hydrogen gas. For example, in a nuclear power plant, when a situation is assumed where the core is excessively heated, zirconium of a zirconium-based alloy used for a fuel cladding tube of a reactor fuel and the like react with a large amount of water vapor. Generates hydrogen.
- the ignition type hydrogen combustor 10 shown in Fig. 5 and Fig. 6 is installed in free space, ignites the hydrogen mixed gas by energizing the heater 13 with a power supply 11 of about 120 V, It burns hydrogen by propagation.
- the ignition type hydrogen combustor 10 has a protection box 15, a power supply conduit 17 and a protection umbrella 19 in addition to the heater 13. This protective umbrella 19 protects the heater 13 from droplets sprayed from the emergency cooling spray in the containment.
- the catalytic hydrogen recombiner 20 shown in FIG. 7 includes a detachable catalyst layer 21 in which a plurality of plate-like catalysts to which platinum or palladium is attached as a catalyst are stacked, an intake port 23, and an exhaust port.
- the ignition type hydrogen combustor directly ignites the hydrogen gas mixture, the seed flame (flame) propagates and can process a large amount of hydrogen in free space in a short period of time. Is about 6% or more, so there is a problem that hydrogen cannot be processed at a hydrogen concentration lower than that.
- the treatment involves a flame, other equipment in the containment vessel, such as safety equipment, power cables, and instrumentation systems, may be adversely affected, and its use should be limited to emergencies when a large amount of hydrogen is generated. It can be said that.
- a catalytic hydrogen recombiner can remove hydrogen by processing a mixture of low to high concentrations of hydrogen over a wide range, but the processing speed is low and the generated hydrogen cannot be processed when a large amount of hydrogen is generated. Not tolerate high hydrogen concentrations. Ignition at such high hydrogen concentrations can cause deflagration, detonation, and other problems. Furthermore, in an abnormal state such as when a large amount of hydrogen is generated, the atmosphere in the containment vessel contains various substances, which poisons the catalyst with toxic substances, lowering the activity of the catalyst, There is a problem that hydrogen cannot be processed.
- a hydrogen gas-containing air processing apparatus comprising: a housing having an intake port and an exhaust port and defining a gas passage therein; and a gas passage therefor. And a heater provided inside or in the vicinity of the catalyst layer.
- an electric heater as a heater may be provided in penetrating contact with the plate-like catalyst, and when the catalyst layer is formed from a honeycomb-like catalyst, it may be provided in a gas passage. It is preferable to dispose an electric heater close to the honeycomb-shaped catalyst upstream of the honeycomb-shaped catalyst.
- FIG. 2 is an elevational sectional view showing another embodiment of the present invention
- Fig. 3 is a plan sectional view taken along the line III-III in Fig. 2,
- FIG. 4 is an overall perspective view showing an example of a conventional device
- Fig. 5 is an overall conceptual diagram of another conventional device
- FIG. 1 is a partially enlarged view of Figure 5, and FIG. 7 is an exploded view of still another conventional device.
- BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
- the housing or protective box 31 of the hydrogen recombination device 30 for treating the hydrogen gas-containing air in the containment vessel has an intake port 33 at the bottom and an exhaust port at the upper side. It has 35 inside and forms an air passage communicating with these inside.
- a catalyst layer 37 consisting of a plurality of plate-like catalysts 37a is provided on the intake port 33 side of the air passage, and an air passage is formed between the plate-like catalysts 37a to allow gas to flow. ing.
- an electric heater 39 is provided through the plate catalyst 37, and a heat generating portion is adjacent to the plate catalyst.
- a mixed gas containing hydrogen and oxygen that is, hydrogen gas-containing air is supplied from the intake port 33 to the protective box 3.
- the gas flows into the gas passage inside 1, and hydrogen and oxygen are combined on the catalyst surface of the plate catalyst 37a to generate heat.
- electricity is supplied to the electric heater 39, which generates electric resistance heat and heats and activates the adjacent catalyst to accelerate the bonding reaction.
- the catalyst adjacent to the portion where the binding reaction is occurring is heated by conduction of heat of the exothermic reaction, and the binding reaction is promoted also in that portion, thus activating the entire plate-like catalyst 37a.
- Such an activation promoting phenomenon of the plate-like catalyst 37a occurs in the entire catalyst layer 37, and the bonding between hydrogen and oxygen is promoted, so that the hydrogen is rapidly processed.
- the air heated by the heat generated by the binding reaction further flows through the gas passage and is discharged from the exhaust port 35.
- the housing or vessel 41 of the hydrogen recombination apparatus 40 for treating the hydrogen-containing air in the containment vessel has an intake port 43 at the bottom and an outlet 4 at the top. 4 and an air passageway 42 connected to them is formed inside.
- the outlet 44 of the container 41 is covered with a protective cover 46 at a distance, and an annular exhaust port 45 is formed on the side.
- a catalyst layer 47 made of a honeycomb catalyst is provided in an air passage 42 inside the container, and an electric heater 49 is provided in an air passage 42 below the catalyst layer 47.
- the heat generating portion of the electric heater 49 is not adjacent but close to the catalyst layer 47.
- the electric heater 49 is also energized and generates electric resistance heat, which heats and activates the lower part of the adjacent catalyst layer 47 to promote the recombination reaction.
- the catalyst adjacent to the part where the binding reaction is occurring is heated by conduction of heat of the exothermic reaction, and the binding reaction is promoted also in that part, and thus the catalyst of the catalyst layer 47 is sequentially heated and activated.
- a promotion phenomenon occurs throughout the catalyst layer 47, and the bond between hydrogen and oxygen is promoted.
- the air heated by the heat generated by the recombination reaction becomes exhaust gas, flows through the gas passage 42, and is discharged from the exhaust port 45.
- the electric heater 49 becomes the ignition source and processes a large amount of hydrogen by combustion propagation.
- INDUSTRIAL APPLICABILITY As described above, according to the present invention, when the concentration of hydrogen in air is low, hydrogen gas is produced by the action of a catalyst whose activation is promoted by a heater. When a large amount of hydrogen is generated and the hydrogen concentration rises significantly, the heater becomes the ignition source and the combustion reaction takes place, causing a rapid reaction of hydrogen. Can be processed.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- High Energy & Nuclear Physics (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
- Gas Burners (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980707804A KR100309061B1 (ko) | 1997-02-06 | 1998-02-05 | 수소가스를함유한공기의처리장치 |
| CA002249581A CA2249581C (en) | 1997-02-06 | 1998-02-05 | Apparatus for treating air containing hydrogen gas |
| EP98901523A EP0929078A4 (en) | 1997-02-06 | 1998-02-05 | HYDROGEN CONTAINING AIR TREATMENT APPARATUS |
| US09/812,081 US20010055360A1 (en) | 1997-02-06 | 2001-03-19 | Apparatus for treating air containing hydrogen gas |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9/23969 | 1997-02-06 | ||
| JP9023969A JPH10221490A (ja) | 1997-02-06 | 1997-02-06 | 水素ガス含有空気の処理装置 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1998035357A1 true WO1998035357A1 (fr) | 1998-08-13 |
Family
ID=12125391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1998/000485 Ceased WO1998035357A1 (fr) | 1997-02-06 | 1998-02-05 | Appareil de traitement d'air contenant de l'hydrogene |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0929078A4 (ja) |
| JP (1) | JPH10221490A (ja) |
| KR (1) | KR100309061B1 (ja) |
| CN (1) | CN1216142A (ja) |
| CA (1) | CA2249581C (ja) |
| ID (1) | ID21815A (ja) |
| WO (1) | WO1998035357A1 (ja) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007060372B4 (de) * | 2007-12-12 | 2010-11-18 | Areva Np Gmbh | Rekombinatorelement |
| KR101636394B1 (ko) * | 2014-12-22 | 2016-07-06 | 한국원자력연구원 | 원자력발전소의 여과배기장치 |
| US10839966B2 (en) | 2017-05-10 | 2020-11-17 | Westinghouse Electric Company Llc | Vortex driven passive hydrogen recombiner and igniter |
| CN107335426A (zh) * | 2017-06-30 | 2017-11-10 | 东南大学 | 基于基体电加热的温度可调节平板式催化剂 |
| CN108053896B (zh) * | 2017-11-28 | 2020-02-21 | 上海交通大学 | 一种氢气催化复合器 |
| JP7147508B2 (ja) * | 2018-11-22 | 2022-10-05 | 株式会社Ihi | 放射性廃棄物輸送装置及び該放射性廃棄物輸送装置に対する放射性廃棄物充填方法 |
| FR3118589B1 (fr) * | 2021-01-07 | 2025-12-12 | Soletanche Freyssinet | Recombineur catalytique de dihydrogène |
| CN113380430A (zh) * | 2021-06-03 | 2021-09-10 | 哈尔滨工程大学 | 一种氢气复合器催化剂装载盒 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55158600A (en) * | 1979-05-28 | 1980-12-10 | Tokyo Shibaura Electric Co | Recombiner |
| JPS5655215Y2 (ja) * | 1977-06-29 | 1981-12-23 | ||
| JPS5920719Y2 (ja) * | 1980-07-09 | 1984-06-15 | 株式会社日立製作所 | 酸水素再結合器 |
| JPS59119297A (ja) * | 1982-12-25 | 1984-07-10 | 株式会社東芝 | 放射性気体廃棄物処理装置 |
| JPH077096B2 (ja) * | 1988-04-22 | 1995-01-30 | 日本碍子株式会社 | 排ガス再結合器 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4741879A (en) * | 1986-06-10 | 1988-05-03 | The United States Of America As Represented By The United States Department Of Energy | Catalytic igniters and their use to ignite lean hydrogen-air mixtures |
| DE4125085A1 (de) * | 1991-07-29 | 1993-02-04 | Siemens Ag | Verfahren und geraet zum rekombinieren und/oder zuenden von wasserstoff, enthalten in einem h(pfeil abwaerts)2(pfeil abwaerts)-luft-dampf-gemisch, insbesondere fuer kernkraftwerke |
| US5262131A (en) * | 1992-05-08 | 1993-11-16 | Abb Air Preheater, Inc. | Catalytic regenerative thermal oxidizer |
| DE19636555C1 (de) * | 1996-09-09 | 1998-01-15 | Siemens Ag | Verfahren und Einrichtung zur Einleitung einer Wasserstoff-Sauerstoff-Reaktion in einem Reaktor-Sicherheitsbehälter |
-
1997
- 1997-02-06 JP JP9023969A patent/JPH10221490A/ja not_active Withdrawn
-
1998
- 1998-02-05 EP EP98901523A patent/EP0929078A4/en not_active Withdrawn
- 1998-02-05 CA CA002249581A patent/CA2249581C/en not_active Expired - Fee Related
- 1998-02-05 WO PCT/JP1998/000485 patent/WO1998035357A1/ja not_active Ceased
- 1998-02-05 ID IDW980096D patent/ID21815A/id unknown
- 1998-02-05 CN CN199898800104A patent/CN1216142A/zh active Pending
- 1998-02-05 KR KR1019980707804A patent/KR100309061B1/ko not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5655215Y2 (ja) * | 1977-06-29 | 1981-12-23 | ||
| JPS55158600A (en) * | 1979-05-28 | 1980-12-10 | Tokyo Shibaura Electric Co | Recombiner |
| JPS5920719Y2 (ja) * | 1980-07-09 | 1984-06-15 | 株式会社日立製作所 | 酸水素再結合器 |
| JPS59119297A (ja) * | 1982-12-25 | 1984-07-10 | 株式会社東芝 | 放射性気体廃棄物処理装置 |
| JPH077096B2 (ja) * | 1988-04-22 | 1995-01-30 | 日本碍子株式会社 | 排ガス再結合器 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP0929078A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0929078A4 (en) | 2002-05-15 |
| CN1216142A (zh) | 1999-05-05 |
| ID21815A (id) | 1999-07-29 |
| KR100309061B1 (ko) | 2001-12-12 |
| JPH10221490A (ja) | 1998-08-21 |
| CA2249581C (en) | 2003-04-01 |
| CA2249581A1 (en) | 1998-08-13 |
| EP0929078A1 (en) | 1999-07-14 |
| KR20000064828A (ko) | 2000-11-06 |
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