WO2003069228A1 - Procede de traitement de gaz d'echappement - Google Patents
Procede de traitement de gaz d'echappement Download PDFInfo
- Publication number
- WO2003069228A1 WO2003069228A1 PCT/JP2003/001507 JP0301507W WO03069228A1 WO 2003069228 A1 WO2003069228 A1 WO 2003069228A1 JP 0301507 W JP0301507 W JP 0301507W WO 03069228 A1 WO03069228 A1 WO 03069228A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas
- combustion chamber
- nickel
- exhaust gas
- combustion
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
- F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/30—Halogen; Compounds thereof
Definitions
- the present invention relates to a method and an apparatus for treating exhaust gas.
- the present invention particularly relates to a method and an apparatus for treating an exhaust gas containing a fluorine gas or a halogen fluoride gas discharged from an etching step or a cleaning step in a semiconductor manufacturing step, and a method for manufacturing a semiconductor device using the method or the apparatus.
- Exhaust gas discharged from various semiconductor manufacturing processes includes gases such as semiconductor material gas, etching gas, and cleaning gas, and these gases may be harmful.
- gases such as semiconductor material gas, etching gas, and cleaning gas
- gases that load the environment are contained, and exhaust gases containing such components cannot be discharged to the atmosphere as they are.
- the exhaust gas discharged from the semiconductor manufacturing process is subjected to high-temperature combustion treatment with city gas, LPG, methane and other fuel gas, and air or oxygen and other auxiliary gas.
- city gas LPG, methane and other fuel gas
- air or oxygen and other auxiliary gas order to, Ri I like to nitrogen of nitrogen elemental or in the air contained in the exhaust gas, N0 X as a by-product there is a problem that is generated.
- the amount of .nu.0 chi contained in the exhaust gas after combustion may 1-30% and become very high concentration, 25 ppm in TL V (NO, buy 2 at 3 ppm) the variety of ways in order to sea urchin'm not exceed has been studied.
- Japanese Patent 2001- 193918 discloses, in order to reduce the generation amount of N0 X, it is described that various studies have been performed with the shape of the combustion chamber, the shape of the nozzle or the like.
- the exhaust gas containing NF 3 gas is used in large quantities in the E Tsuchingu and cleaning steps are improved is desired especially since the amount of generated .nu.0 chi is sometimes multi Kunar.
- fluorine gas and halogen fluoride gas are very active oxidizing agents, have strong chemical reactivity, may react with oxidizing substances at room temperature and ignite, and are highly corrosive to equipment materials. Therefore, it is necessary to carefully select equipment materials from specific high corrosion resistant metals.
- ethylene tetrafluoride is widely used as a high corrosion resistant resin in semiconductor manufacturing equipment. Even resin may be incompatible depending on usage conditions.
- a device for removing halogen fluoride gas such as fluorine gas and chlorine trifluoride gas
- a wet absorption device that neutralizes and absorbs with a scrubber using an aqueous alkali solution such as caustic soda and caustic force.
- a dry abatement system that removes by adsorption with a solid adsorbent such as activated alumina and soda lime is used.
- the problem is that it is not possible to treat exhaust gas containing high concentrations of fluorine gas and halogen fluoride gas.
- the present invention provides An abatement method capable of treating exhaust gas discharged from a semiconductor manufacturing process containing a high concentration or a large amount of halogenated gas, safe and energy-saving, and capable of more efficient abatement treatment. It is an object to provide a device.
- the exhaust gas is separately treated by a dedicated abatement apparatus.
- the size, size, complexity, and installation space of the abatement device can be reduced, and the above-mentioned problems can be solved.
- the inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, exhaust gas containing fluorine gas or fluorinated fluorinated gas discharged from an etching process or a cleaning process is not fluorinated on the surface.
- the inventors have found that the above problem can be solved by introducing the treatment method into a combustion apparatus having a combustion chamber in which a dynamic film is formed and burning the exhaust gas, thereby completing the present invention.
- the present invention is directed to burning exhaust gas containing fluorine gas or fluorinated halogen gas discharged from an etching step or a cleaning step in a combustion chamber having a fluorinated passivation film formed on the surface.
- Disclosed is a method for treating exhaust gas.
- the passivation film is preferably made of nickel fluoride.
- the concentration of fluorine gas or halogen fluoride gas is preferably 5 vol% or less.
- the content of nitrogen oxides contained in the exhaust gas after combustion is preferably less than 5 vol lppin.
- the present invention also includes an exhaust gas inlet, a fuel inlet, a pre-combustion chamber, a combustion chamber, an air inlet, and an exhaust pipe.
- an exhaust gas treatment device on which a passivation film is formed.
- the combustion chamber is formed of at least one material selected from the group consisting of nickel, a high nickel-containing alloy and monel, and a fluorinated passivation film is preferably formed on the surface of the material.
- the combustion chamber is formed of at least one material selected from the group consisting of stainless steel and steel, and nickel, nickel alloy electroplating, electroplating, nickel alloy electroless plating is applied to the surface of the material. It is preferable to have a thin film made of ceramide or a ceramic thin film made of alumina or aluminum nitride, and a fluorinated passivation film is formed on the surface of the thin film.
- the present invention provides an etching step or a cleaning step using a fluorine gas or a fluorine fluoride gas as an etching gas or a cleaning gas, and a fluorine gas or a fluorine fluoride gas discharged from those steps.
- What is claimed is: 1.
- a method for producing a semiconductor depiice having an abatement step of burning a gas containing a gen gas, wherein the abatement step is performed in a combustion chamber having a surface on which a fluorinated passivation film is formed. provide.
- the fluorinated passivation film is made of nickel fluoride.
- FIG. 1 is a schematic view showing an example of a processing apparatus capable of performing the exhaust gas processing method of the present invention.
- 1 is the process exhaust gas
- 2 is the dilution gas
- 3 is the auxiliary gas
- 4 is the combustible gas for combustion
- 5 is air
- 6 is the gas released to the atmosphere
- 7 is the pre-combustion chamber
- 8 is the combustion chamber
- 9 Is the combustion gas cooling device
- 10 is the AL RISK RUBBER
- 11 is the exhaust blower.
- exhaust gas containing fluorine gas or halogen fluoride gas discharged from the etching step or the cleaning step is burned in a combustion chamber having a fluorinated passivation film formed on the surface.
- the present invention detoxifies exhaust gas discharged from a semiconductor manufacturing process containing, for example, a gas such as SiH 4 used as a film forming gas and other gases together with a fluorine gas or a halogen fluoride gas at a predetermined temperature. Processing.
- the treatment method of the present invention reduces the supply amount of fuel and reduces the combustion temperature sufficiently under normal combustion conditions that do not contain fluorine gas or halogen fluoride gas. , it can be processed into harmless compound liable, in the conditions in operating child that would the this, carbon dioxide and N0 X amount to significantly reduce an exploded byproduct discharged from the scrubber Can be.
- SiH 4 , SiH 2 Cl 2 , NH 3 , PH 3 , WF 6 , S i (0C 2 H 5 ), which are usually used in a process of manufacturing a semiconductor using a combustion type abatement apparatus, are used.
- deposition gas such as C 2 H 2
- the component to be treated contained in the exhaust gas may be only fluorine gas or fluorinated hydrogen gas.
- the concentration of the fluorine gas or the halogen fluoride gas contained in the exhaust gas is preferably 5 vol% or less.
- the introduced exhaust gas does not contain the fluorine gas / fluorinated halogen gas (for example, the combustion conditions required to decompose nitrogen trifluoride gas).
- the fluorine gas / fluorinated halogen gas for example, the combustion conditions required to decompose nitrogen trifluoride gas.
- the amount of fuel supplied is reduced by 10 to 30% and the combustion temperature is reduced by 50 ° C or more.
- toxic gas components can be rendered harmless or converted into substances that can be easily decomposed and removed. Therefore, by using the treatment method of the present invention, it is possible to reduce the amount of fuel gas using carbon dioxide, which is a decomposition by-product discharged from the abatement apparatus, in proportion to the amount of reduction. Further, it is possible to significantly reduce also the amount of N0 X by a reduction of the combustion temperature, which is the production of N0 X can be less than 5 volppm.
- the exhaust gas that has been subjected to the combustion treatment is finally converted into hydrogen halides such as hydrogen fluoride, N0 X by wet-type abatement equipment such as an Al-Liscraper connected to the exhaust pipe of the combustion-type abatement tower. And other decomposition substances such as silicon tetrafluoride are absorbed.
- the exhaust gas treatment apparatus of the present invention includes an exhaust gas inlet, a fuel inlet, a pre-combustion chamber, a combustion chamber, an air inlet, and an exhaust pipe, and at least a fluorinated passivation film is formed on a surface of the combustion chamber. Things.
- FIG. 1 shows an example of a processing apparatus capable of performing the exhaust gas processing method of the present invention, in which a mixed exhaust gas containing a fluorine gas or a halogen fluoride gas is passed through a flame wall, and a swirling flow of an auxiliary gas is performed.
- a mixed exhaust gas containing a fluorine gas or a halogen fluoride gas is passed through a flame wall, and a swirling flow of an auxiliary gas is performed.
- a material having high corrosion resistance is indispensable because fluorine gas or fluorinated gas is circulated.
- the combustion chamber 8 is heated to a high temperature by the heat of combustion, the combustion chamber 8 is formed of nickel, a high nickel-containing alloy or Monel, and a fluorinated passivation film is formed on the surface thereof. It is preferable that it is formed.
- the combustion chamber 8 is formed of ordinary stainless steel or general steel material, and on its surface, a thin film made of nickel, nickel alloy electroplating, electroplating or nickel alloy electroless plating, or fluorine-resistant by thermal spraying or the like.
- the pre-combustion chamber 7 has a fluorinated passivation film formed on its surface in the same manner.
- this part is preferably made of nickel, a high nickel-containing alloy, monel, or the like.
- Ordinary stainless steel or steel may be subjected to corrosion resistance treatment such as nickel electroplating, nickel plating, nickel electroless plating, or the like.
- the passivation treatment be performed in advance with the fluorine gas for the equipment members.
- a known method can be used, and for example, a method described in JP-A-11-92912 can be used. That is, for example, the surface of nickel used as a device part is once forcibly oxidized, and then the oxide film is reacted with fluorine gas to form a fluorinated passivation film. Also, for example, when using a device component in which a nickel thin film is formed on a stainless steel surface, a fluoridation passivation film can be formed on the surface by performing oxidation and fluorination in the same manner. it can.
- an exhaust gas containing a fluorine gas or a halogen fluoride gas discharged from an etching step or a cleaning step is supplied to a combustion chamber having a fluorinated passivation film formed on its surface. It is possible to efficiently treat the exhaust gas by introducing the exhaust gas into a combustion device provided with the above.
- the present invention also provides an etching step or a cleaning step using a fluorine gas or a fluorine fluoride gas as an etching gas or a cleaning gas, and a fluorine gas or a fluorine fluoride gas discharged from those steps.
- What is claimed is: 1.
- Example 1 Example 1
- Table 1 shows the operating conditions of the combustion type abatement system and the conditions for introducing fluorine.
- Table 2 shows the results of the composition analysis of the exhaust gas emitted after the combustion abatement.
- the temperature of the combustion chamber was measured with a thermocouple attached to the outer wall of the combustion chamber.
- the concentrations of nitric oxide and nitrogen dioxide contained in the exhaust gas after combustion were measured by gas detector tubes, and the concentration of hydrogen fluoride gas was measured by infrared spectroscopy. Nitrogen trifluoride was measured using a detector. Sampling with an aqueous solution of potassium iodide was performed, and the concentration of fluorine gas was measured by titration of the sample solution with a sodium thiosulfate solution. The metal concentration was measured.
- the exhaust gas after combustion contained no nitric oxide or nitrogen dioxide, and all of the fluorine introduced into the combustion type abatement system was converted to hydrogen fluoride gas by reaction. .
- the absence of combustion reaction products other than hydrogen fluoride gas, water vapor and carbon dioxide in the flue gas was confirmed by infrared spectroscopy and inductively coupled plasma emission analysis of the sample solution.
- Table 3 shows the operating conditions of the combustion type abatement system and the conditions for introducing nitrogen trifluoride, and Table 4 shows the results of the composition analysis of the flue gas.
- the operating conditions shown in Table 3 are combustion operating conditions in which nitrogen trifluoride gas is not detected in the exhaust gas. Therefore, all of the nitrogen trifluoride introduced into the combustion type abatement system was reacted and converted to hydrogen fluoride gas, but in the exhaust gas, nitric oxide and nitrogen dioxide were generated respectively. The allowable concentration was greatly exceeded.
- Example 5 The same combustion abatement experiment as in Example 1 was performed, except that the fuel methane flow rate was increased to 30 LZ min and the temperature of the combustion chamber was raised to 350 ° C or higher compared to Example 1.
- Table 5 shows the operating conditions and fluorine introduction conditions of the combustion type abatement system, and Table 6 shows the results of the composition analysis of the combustion exhaust gas.
- Example 1 The same combustion abatement experiment as in Example 1 was conducted except that the combustion chamber was not coated (fluoride passivation treatment) but was kept stainless (SUS304 material).
- Table 7 shows the operating conditions of the combustion type abatement system and the conditions for introducing fluorine, and Table 8 shows the results of the composition analysis of the flue gas. Table 7
- Table 9 shows the operating conditions of the combustion type abatement system and the conditions for introducing fluorine
- Table 10 shows the results of the composition analysis of the flue gas.
- Example 2 The same combustion abatement experiment as in Example 1 was conducted except that the introduced gas was nitrogen trifluoride and the flow rate of nitrogen trifluoride was 9.0 Lin. However, the surface of the combustion chamber was not treated and stainless steel (SUS304) was used as it was. Table 11 shows the operating conditions of the combustion type abatement system and the conditions for introducing nitrogen trifluoride. Table 12 shows the results of the composition analysis of the combustion exhaust gas.
- the combustion chamber with Nikel surface treatment showed no significant damage and showed great corrosion resistance to fluorine gas and nitrogen trifluoride.
- Comparative Example 3 it was confirmed that Cr was remarkably lost from the material. Also, in the case of Comparative Example 5, the Cr concentration was slightly reduced. Cracks have also been observed by microscopic observation, and the fluoridation film peeled off, such as the formation of Cr fluoride and its vaporization, and the reaction of forming higher fluoride from divalent to trivalent Fe in stainless steel. Had occurred. As for the damage state of the stainless steel in the combustion chamber and the pre-combustion chamber, when comparing fluorine gas and nitrogen trifluoride, the Cr concentration change in Comparative Example 3 in which fluorine gas was burned was all large, and the appearance was significantly deteriorated.
- the pre-combustion chamber has a higher Cr concentration change in both the fluorine gas and nitrogen trifluoride in the pre-combustion chamber than in the combustion chamber. Were all large and the appearance was significantly deteriorated. This is considered to be because the oxidation reaction due to the oxidizing flame is predominant in the combustion chamber, particularly at the portion of the wall thereof, when the fuel gas is burned.
- Industrial applicability As described above, by using the treatment method of the present invention, when the fluorine gas or the fluorinated halogen gas is discharged at a high concentration and in a large amount, and a gas having a different property including these gases is contained.
- the method of the present invention is preferably used in the semiconductor manufacturing process, is an efficient and economical detoxification method that takes safety measures into full consideration, and has high industrial value because it protects the global environment. Things.
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
- Incineration Of Waste (AREA)
- Drying Of Semiconductors (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/474,765 US20050115674A1 (en) | 2002-02-14 | 2003-02-13 | Method for treating exhaust gas |
KR1020037013443A KR100544760B1 (ko) | 2002-02-14 | 2003-02-13 | 배기 가스 처리 방법 및 처리 장치 |
AU2003211966A AU2003211966A1 (en) | 2002-02-14 | 2003-02-13 | Method for treating exhaust gas |
HK04109106A HK1066262A1 (en) | 2002-02-14 | 2004-11-18 | Method for treating exhaust gas |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-37344 | 2002-02-14 | ||
JP2002037344A JP4172938B2 (ja) | 2002-02-14 | 2002-02-14 | 排ガスの処理方法および処理装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003069228A1 true WO2003069228A1 (fr) | 2003-08-21 |
Family
ID=27678109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/001507 WO2003069228A1 (fr) | 2002-02-14 | 2003-02-13 | Procede de traitement de gaz d'echappement |
Country Status (8)
Country | Link |
---|---|
US (1) | US20050115674A1 (ja) |
JP (1) | JP4172938B2 (ja) |
KR (1) | KR100544760B1 (ja) |
CN (1) | CN1259524C (ja) |
AU (1) | AU2003211966A1 (ja) |
HK (1) | HK1066262A1 (ja) |
TW (1) | TW592797B (ja) |
WO (1) | WO2003069228A1 (ja) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4751091B2 (ja) * | 2005-04-08 | 2011-08-17 | 関東電化工業株式会社 | 排ガスの処理方法 |
GB0509944D0 (en) * | 2005-05-16 | 2005-06-22 | Boc Group Plc | Gas combustion apparatus |
JP4912163B2 (ja) * | 2007-01-12 | 2012-04-11 | ステラケミファ株式会社 | フッ化不動態膜を形成した炭素鋼又は特殊鋼及びその形成方法 |
JP5659491B2 (ja) * | 2009-01-30 | 2015-01-28 | セントラル硝子株式会社 | フッ素ガス発生装置を含む半導体製造設備 |
JP2010276307A (ja) * | 2009-05-29 | 2010-12-09 | Japan Pionics Co Ltd | 熱分解装置 |
CN102163643B (zh) * | 2010-10-09 | 2013-01-02 | 浙江哈氟龙新能源有限公司 | 废气处理热循环烘干*** |
KR101970807B1 (ko) * | 2012-08-20 | 2019-04-19 | 사빅 글로벌 테크놀러지스 비.브이. | 근적외선 분광법 및 케모메트릭스를 이용한 공정 스크러버 내의 부식제의 실시간 온라인 결정 |
JP6257442B2 (ja) * | 2014-05-15 | 2018-01-10 | 東京エレクトロン株式会社 | 減圧処理装置における排ガス防爆方法 |
FR3043080B1 (fr) * | 2015-11-04 | 2021-01-08 | Haffner Energy | Procede de production de gaz synthetique hypergaz |
CN106884134B (zh) * | 2015-12-16 | 2020-07-03 | 中国科学院上海应用物理研究所 | 一种镍基合金的表面钝化处理方法 |
GB2554406A (en) * | 2016-09-26 | 2018-04-04 | Edwards Korea Ltd | Plasma abatement |
CN106524191A (zh) * | 2016-10-31 | 2017-03-22 | 江苏优瑞德环境科技有限公司 | 含氟烷烃废气焚烧处理工艺及装置 |
EP4067300A4 (en) * | 2019-11-27 | 2024-01-03 | Resonac Corp | METHOD FOR MEASURING THE FLUORINE GAS CONCENTRATION IN HALOGEN FLUORIDE CONTAINING GAS USING A MASS SPECTROMETER |
CN113785190A (zh) * | 2019-11-27 | 2021-12-10 | 昭和电工株式会社 | 由紫外光谱法测定含卤素氟化物气体所含的氟气浓度的测定方法 |
CN112827341B (zh) * | 2020-12-25 | 2022-05-17 | 北京京仪自动化装备技术股份有限公司 | 一种半导体工艺的废气处理***及其废气的处理方法 |
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JPS63166783A (ja) * | 1986-12-27 | 1988-07-09 | 三石耐火煉瓦株式会社 | 塵埃焼却炉用耐火煉瓦 |
JPH1179871A (ja) * | 1997-08-27 | 1999-03-23 | Harima Ceramic Co Ltd | 焼却炉の内張り構造 |
JP2001065838A (ja) * | 1999-08-26 | 2001-03-16 | Nisshin Steel Co Ltd | 耐高温腐食性に優れた焼却炉体および焼却炉付帯設備 |
JP2001082723A (ja) * | 1999-07-14 | 2001-03-30 | Nippon Sanso Corp | 燃焼式除害装置及び燃焼式除害装置用バーナー |
WO2001033141A1 (fr) * | 1999-11-02 | 2001-05-10 | Ebara Corporation | Appareil de combustion pour le traitement de gaz d'emission |
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US4236464A (en) * | 1978-03-06 | 1980-12-02 | Aerojet-General Corporation | Incineration of noxious materials |
DE68907366T2 (de) * | 1988-04-11 | 1993-12-02 | Mitsui Toatsu Chemicals | Verfahren zur Raffinierung von Stickstofftrifluoridgas. |
JPH01261208A (ja) * | 1988-04-11 | 1989-10-18 | Mitsui Toatsu Chem Inc | 三弗化窒素ガスの精製方法 |
US5009963A (en) * | 1988-07-20 | 1991-04-23 | Tadahiro Ohmi | Metal material with film passivated by fluorination and apparatus composed of the metal material |
FR2667134B1 (fr) * | 1990-09-24 | 1995-07-21 | Pavese Guy | Procede d'amelioration de la combustion pour bruleur a air souffle et moyens destines a le mettre en óoeuvre. |
US5510093A (en) * | 1994-07-25 | 1996-04-23 | Alzeta Corporation | Combustive destruction of halogenated compounds |
US6146606A (en) * | 1999-02-09 | 2000-11-14 | Showa Denko Kabushiki Kaisha | Reactive agent and process for decomposing nitrogen fluoride |
US6630421B1 (en) * | 1999-04-28 | 2003-10-07 | Showa Denko Kabushiki Kaisha | Reactive agent and process for decomposing fluorine compounds and use thereof |
-
2002
- 2002-02-14 JP JP2002037344A patent/JP4172938B2/ja not_active Expired - Fee Related
-
2003
- 2003-02-13 AU AU2003211966A patent/AU2003211966A1/en not_active Abandoned
- 2003-02-13 CN CNB038001454A patent/CN1259524C/zh not_active Expired - Fee Related
- 2003-02-13 KR KR1020037013443A patent/KR100544760B1/ko not_active IP Right Cessation
- 2003-02-13 WO PCT/JP2003/001507 patent/WO2003069228A1/ja active Application Filing
- 2003-02-13 US US10/474,765 patent/US20050115674A1/en not_active Abandoned
- 2003-02-14 TW TW092103139A patent/TW592797B/zh not_active IP Right Cessation
-
2004
- 2004-11-18 HK HK04109106A patent/HK1066262A1/xx not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS63166783A (ja) * | 1986-12-27 | 1988-07-09 | 三石耐火煉瓦株式会社 | 塵埃焼却炉用耐火煉瓦 |
JPH1179871A (ja) * | 1997-08-27 | 1999-03-23 | Harima Ceramic Co Ltd | 焼却炉の内張り構造 |
JP2001082723A (ja) * | 1999-07-14 | 2001-03-30 | Nippon Sanso Corp | 燃焼式除害装置及び燃焼式除害装置用バーナー |
JP2001065838A (ja) * | 1999-08-26 | 2001-03-16 | Nisshin Steel Co Ltd | 耐高温腐食性に優れた焼却炉体および焼却炉付帯設備 |
WO2001033141A1 (fr) * | 1999-11-02 | 2001-05-10 | Ebara Corporation | Appareil de combustion pour le traitement de gaz d'emission |
Also Published As
Publication number | Publication date |
---|---|
US20050115674A1 (en) | 2005-06-02 |
TW592797B (en) | 2004-06-21 |
CN1498328A (zh) | 2004-05-19 |
JP4172938B2 (ja) | 2008-10-29 |
CN1259524C (zh) | 2006-06-14 |
KR20030085596A (ko) | 2003-11-05 |
AU2003211966A1 (en) | 2003-09-04 |
JP2003236337A (ja) | 2003-08-26 |
HK1066262A1 (en) | 2005-03-18 |
KR100544760B1 (ko) | 2006-01-24 |
TW200303236A (en) | 2003-09-01 |
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