JP4361056B2 - オゾン処理方法及びオゾン処理装置 - Google Patents
オゾン処理方法及びオゾン処理装置 Download PDFInfo
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Description
2 オゾン供給管路
3,3A,3B 水蒸気発生器
3a,3b,3c 水蒸気供給管路
4,4A 冷却器
5,5A 気液分離器
10 処理部
100 メタルトラップ
W 半導体ウエハ(被処理体)
図1は、本発明によるオゾン処理装置の第1実施形態を示す概略図である。オゾン処理装置は、放電によりオゾンガスを生成するオゾン発生器1(オゾン発生手段)と、このオゾン発生器1により生成されたオゾンガスを処理部10に供給するオゾン供給管路2と、この供給管路2に接続され、この供給管路2中を流れるオゾンガスに混合される水蒸気を生成する水蒸気発生器(水蒸気発生手段)3とを具備している。
図2は、本発明によるオゾン処理装置の第2実施形態を示す概略図である。第2実施形態では、O3ガスへの水蒸気の混合および混合流体の冷却を複数回行うように、水蒸気発生器3と冷却手段4とを複数組設けている。図2に示すように、冷却手段4(以下に、第1の冷却手段4という)の下流側の供給管路2に水蒸気供給管路3bを介して第2の水蒸気発生器3Aを接続すると共に第2の冷却手段4Aを介設し、第2の冷却手段4Aの下流側に気液分離手段5を接続している。なお、本明細書の各実施形態において水蒸気発生器および冷却手段に付された「第1の」および「第2の」等の序数は、請求の範囲における「第1の」および「第2の」等の序数と必ずしも一致していないことに注意されたい。
図3は、本発明によるオゾン処理装置の第3実施形態を示す概略図である。第3実施形態では、気液分離手段5Aを、第1実施形態のバッファタンク50に代えて、図3に示すように純水貯留タンク53にて構成している。純水貯留タンク53の下端部に冷却手段4に供給管路2を介して接続された流体入口が設けられ、純水貯留タンク53の上端部に供給管路2を介して処理部10に接続された流体出口が設けられている。
図7は、オゾン処理装置の第4実施形態を示す概略図である。第4実施形態のオゾン処理装置は、第1実施形態のオゾン処理装置に、金属吸着手段100(以下に「メタルトラップ100」という)を更に付加したものである。メタルトラップ100は、オゾン供給管路2の水蒸気供給管路3aの接続部より下流側でオゾン供給管路2に介設されている。メタルトラップ100は、耐食性に富む材料であるフッ素樹脂(例えば、PFA)にて形成される容器100bと、容器100b内に収容されてO3ガス中の金属成分であるクロム(Cr)を吸着する含シリコン金属吸着材100aとから構成されている。
図8は、本発明によるオゾン処理装置の第5実施形態を示す概略図である。第5実施形態のオゾン処理装置は、図1に示す第1実施形態のオゾン処理装置の気液分離手段5の下流側の供給管路2にメタルトラップ100を設けたものである。気液分離手段5を出た精製済みのO3ガスに第2の水蒸気発生器3Aが発生した水蒸気が混合され、O3ガスと水蒸気の混合流体はメタルトラップ100を通るときに不純物が除去される。これにより、より不純物含有量の低いO3ガスを得ることができる。
図9は、本発明によるオゾン処理装置の第6実施形態を示す概略図である。第6実施形態のオゾン処理装置は、図8に示す第5実施形態のオゾン処理装置のメタルトラップ100の下流側の供給管路2に、冷却手段(第2の冷却手段4A)および気液分離手段(第2の気液分離手段5A)を設けたものである。これにより、より不純物含有量の低いO3ガスを得ることができる。
図10は、本発明によるオゾン処理装置の第7実施形態を示す概略構成図である。第7実施形態のオゾン処理装置は、図9に示す第6実施形態のオゾン処理装置において、メタルトラップ100と第2の冷却手段4Aとの間の供給管路2に、第3の水蒸気供給管路3cを介して水蒸気発生器(第3の水蒸気発生器3B)を接続したものである。この第7実施形態によれば、メタルトラップ100を出た混合流体に更に水蒸気を混合することにより、混合流体中に残存する不純物成分をさらに水蒸気中に溶け込ませることができるため、第2の冷却手段4Aおよび第2の気液分離手段5Aによる不純物成分の除去効率をより高めることができる。
Claims (6)
- オゾンガスを用いて被処理体を処理するオゾン処理装置において、
被処理体を収容する処理空間を有する処理部と、
放電により含酸素ガスからオゾンガスを生成するオゾン発生器と、
前記オゾン発生器により生成されたオゾンガスを前記処理部の前記処理空間に供給するオゾン供給管路と、
水蒸気を生成する水蒸気発生器と、
前記オゾン供給管路に接続され、前記水蒸気発生器により生成された水蒸気を前記オゾン供給管路に供給する水蒸気供給管路と、
前記オゾンガスおよび前記水蒸気を含む混合流体が導入されるように、前記オゾン供給管路と前記水蒸気供給管路との接続部の下流側の部分において前記オゾン供給管路に介設された、シリコンを含む材料からなる吸着材を含むメタルトラップと、
前記メタルトラップの下流側の部分において前記オゾン供給管路に介設され、前記メタルトラップを通過した前記混合流体を冷却する冷却手段と、
前記冷却手段の下流側の部分において前記オゾン供給管路に介設され、前記冷却手段によって冷却された前記混合流体に含まれる前記オゾンガスを前記水蒸気が冷却されることにより生じた凝縮水から分離する気液分離手段と、
を備えたことを特徴とするオゾン処理装置。 - 前記吸着材は、純シリコンまたはSiO2からなることを特徴とする、請求項1に記載のオゾン処理装置。
- 前記メタルトラップは、前記シリコンを含む材料からなるチップが多数収納された容器からなることを特徴とする、請求項1に記載のオゾン処理装置。
- 前記気液分離手段は水が収容されたタンクからなり、前記タンク内の水に前記凝縮水と前記オゾンガスが通されることにより、前記凝縮水は前記タンク内の水に混ざり前記オゾンガスから分離されることを特徴とする、請求項1に記載のオゾン処理装置。
- オゾンを用いて処理空間に収容された被処理体に処理を施す方法において、
放電によりオゾンガスを生成する工程と、
前記オゾンガスに水蒸気を混合する工程と、
前記オゾンガスと前記水蒸気を含む混合流体を、シリコンを含む材料からなる吸着材に接触させて、これにより、前記オゾンガス中に含まれるメタルを前記吸着材に吸着させて除去する工程と、
前記混合流体を前記吸着材に接触させた後に、前記混合流体を冷却して、これにより、前記オゾンガスに含まれる不純物を、前記水蒸気が冷却されることにより生じた凝縮水中に溶け込ませる工程と、
前記オゾンガスを前記凝縮水から分離する工程と、
前記凝縮水から分離された前記オゾンガスを前記処理空間に供給して、前記被処理体に処理を施す工程と、
を備えたことを特徴とする方法。 - 前記オゾンガスを前記凝縮水から分離する前記工程は、前記オゾンガスおよび前記凝縮水を水の中に通すことにより行われることを特徴とする、請求項5に記載の方法。
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JP2004167082 | 2004-06-04 | ||
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PCT/JP2004/018791 WO2005058753A1 (ja) | 2003-12-17 | 2004-12-16 | オゾン処理方法及びオゾン処理装置 |
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JP4786351B2 (ja) | 2006-01-20 | 2011-10-05 | 株式会社東芝 | 処理装置及び処理方法 |
JP4952375B2 (ja) * | 2007-05-23 | 2012-06-13 | 株式会社明電舎 | レジスト除去方法及びその装置 |
CN101889330B (zh) * | 2007-12-04 | 2012-11-14 | 株式会社明电舍 | 除去抗蚀剂的方法和用于它的装置 |
JP5481783B2 (ja) * | 2007-12-10 | 2014-04-23 | 株式会社明電舎 | オゾン供給方法及びその装置 |
US20110220148A1 (en) * | 2010-03-12 | 2011-09-15 | Tokyo Electron Limited | Method for performing preventative maintenance in a substrate processing system |
CN109126375A (zh) * | 2017-06-27 | 2019-01-04 | 中国石油化工股份有限公司 | 一种加油站储罐清罐过程中油气回收装置及方法 |
KR102229765B1 (ko) * | 2019-05-09 | 2021-03-18 | 서규선 | 산화질소 함유수 제조장치 |
US11875974B2 (en) | 2020-05-30 | 2024-01-16 | Preservation Tech, LLC | Multi-channel plasma reaction cell |
CN113443605B (zh) * | 2021-05-19 | 2024-04-12 | 江苏达格水务有限公司 | 一种基于双极性脉冲电源的臭氧发生系统 |
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JPS5910925B2 (ja) * | 1977-03-15 | 1984-03-12 | 三菱電機株式会社 | 酸素リサイクルオゾン発生装置 |
JPS5795808A (en) * | 1980-12-02 | 1982-06-14 | Mitsubishi Electric Corp | Generating apparatus for ozone |
JPS5910925A (ja) | 1982-07-12 | 1984-01-20 | Seikosha Co Ltd | カラ−表示装置 |
US4816121A (en) * | 1983-10-03 | 1989-03-28 | Keefer Bowie | Gas phase chemical reactor |
JPS6125645A (ja) | 1984-07-16 | 1986-02-04 | Hitachi Ltd | 混床式脱塩装置に使用するイオン交換樹脂の再生方法および装置 |
JPH0621010B2 (ja) | 1988-05-06 | 1994-03-23 | 住友精密工業株式会社 | 高純度、高濃度オゾンをほとんど経時変化なく発生させる方法 |
US5141717A (en) * | 1990-12-24 | 1992-08-25 | Ionics, Incorporated | Carbon monitor containing anion exchange resin |
DE4429165A1 (de) * | 1994-08-17 | 1996-02-22 | Hoechst Ag | Filtermaterial und Verfahren zur Entfernung von Ozon aus Gasen und Flüssigkeiten |
JPH0859214A (ja) * | 1994-08-24 | 1996-03-05 | Ebara Corp | オゾン発生装置 |
US5846298A (en) * | 1997-05-09 | 1998-12-08 | Air Products And Chemicals, Inc. | Ozone recovery by zeolite adsorbents |
JPH11290650A (ja) * | 1998-04-06 | 1999-10-26 | Mitsubishi Electric Corp | 気体中の不純物除去装置および除去方法ならびに高清浄度気体の製造装置および製造方法 |
JP2000064073A (ja) * | 1998-08-25 | 2000-02-29 | Mitsubishi Heavy Ind Ltd | オゾン発生装置 |
US6190436B1 (en) * | 1999-03-05 | 2001-02-20 | The Boc Group, Inc. | Ozone purification process |
JP2001248794A (ja) * | 2000-03-02 | 2001-09-14 | Kansai Electric Power Co Inc:The | オゾン貯蔵方法および装置 |
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