JP2010535614A - 光触媒フィルター用媒体 - Google Patents
光触媒フィルター用媒体 Download PDFInfo
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- JP2010535614A JP2010535614A JP2010519492A JP2010519492A JP2010535614A JP 2010535614 A JP2010535614 A JP 2010535614A JP 2010519492 A JP2010519492 A JP 2010519492A JP 2010519492 A JP2010519492 A JP 2010519492A JP 2010535614 A JP2010535614 A JP 2010535614A
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Abstract
Description
−受けるUVの強さ
−清浄器の処理量
−汚染物質の、媒体を通過する速度
−紫外線とヒドロキシルラジカルの作用に対する媒体およびPCOコーティングの不感受性
−PCO媒体による圧力低下
−副産物という名称で知られている潜在的に有毒な中間体化合物生成の抑制
について最適化されなければならない。
−このフェルトは本質的に鉱物性である。
−このフェルトは、圧力低下が1m/sで150Pa未満、より一般的には1m/sで50Pa未満、気体1m/sで20Pa未満でさえある。
−このフェルトは、均質であり、したがってそれを通過する気体の潜在的経路がない。
−このフェルトは、肉眼で見える穴を示さない。
−UVの強度を大きく低下させ、および/または
−清浄器の流量、すなわち処理すべき気体の濾過媒体を通過する速度を大きく低下させる
ことが推奨される(このような特定の状態が起こった場合)。
・UV源から出発して、いくつかのストランドの光ガイド(例えば、光ファイバータイプの)を反応器中に導入できる。これらのストランドは、光エネルギーを反応器中に導入する案内装置として作動する。UVエネルギーを反応器中にできるだけ均一に分布させるため、基材1cm2毎に1つのストランドが考えられる。このような装置の原理は図14に示してある。
・UV源から出発して、単一ストランドの光ガイド(例えば、光ファイバー)を反応器中に導入できる。次いで、これらのストランドは、適切な曲率を付与されたレフレクターまたはミラーを照射し、次いでそのUV光は、反応器内で、できるだけ均一に、このミラーまたはこのレフレクターで反射される。この装置の原理は図14に示してある。他の分散装置を使用してこの目的を達成することもできる。
フェルトを以下のようにして製造する。直径4.4mmの溶融シリカのロッドをオキシプロパンバーナー中で延伸して、直径0.2mmのフィラメントにする。次にこのフィラメントを火炎延伸ブロー成形によって第2のバーナー中で再び延伸して、平均直径を9μmにして、受取りベルトまたは受取りドラム上に投げ出す。そのドラムの速度を調節して下記表(第2表)に示す単位面積当たりの質量のフェルトを得る。次いで、得られたフェルトに、下記表6に示す配合で得られる製剤を含浸させる。
ステンレス鋼製で、中に、直径が47mmの媒体ディスクを入れた反応器を使用する。その反応器の頂部に、シリカのスリットを通じてHPK 125 WのUV照射を生成させる。その照射の強度は、ランプ/媒体の距離を調節することによって制御する。媒体において測定して365nmにて5mW/cm2(媒体の)というUVの強度を使用する。300ppmのメタノールを含有する、濾過空気の連続流を、反応器の上流に、350ml/分の速度で導入する。メタノールの濃度は、PCO処理を実施した後、反応器の下流で、ガスクロマトグラフィーで測定する。汚染物質の鉱物質への転化(CO2およびH2Oへの転化)は、その化学的平衡が活性炭タイプの装置が遭遇することがある単に純粋の吸着現象ではないことを確認することによって確かめる。媒体を製造するためのより特別な操作条件および先に説明した「メタノール試験」で異なる媒体について観察された効率は表8に示してある。Millenium S5 300 の場合、TiO2は100%アナターゼであった。このことは、必ずしも、TIO2に基づいたどの触媒にも当てはまるわけではない。例えば、Degussaから入手できる触媒P25のTiO2は、約1/3がルチルで2/3がアナターゼである。
直径4.4mmの溶融シリカのロッドをオキシプロパンバーナー中で延伸して、直径0.2mmのフィラメントにする。次いで、このフィラメントを、火炎延伸ブロー成形によって第2のバーナー中で再び延伸して、平均直径を9μmにして、受取りドラム上に投げ出す。そのドラムの速度を調節して単位面積当たりの質量が80g/m2のフェルトを得る。次いで、得られたフェルトに、下記表9に示す配合に従って含浸させる。
1F:1つのPCO媒体
2F:UVランプの両側に配置された2つのPCO媒体
Dmax:最大流量(130m3/h)
D1/2:最大流量の1/2の流量
UVmax:最大UV照射
UV/2:最大UV照射の1/2のUV照射
UVmin:受けたUV照射2mW/cm2
直径4.4mmの溶融シリカのロッドをオキシプロパンバーナー中で延伸して、直径0.2mmのフィラメントにする。次いで、このフィラメントを、火炎延伸ブロー成形によって第2のバーナー中で再び延伸して、平均直径を9μmにして、受取りドラム上に投げ出す。そのドラムの速度を調節して単位面積当たりの質量が65g/m2のフェルトを得る。次いで、得られたフェルトに、下記表10に示す配合に従って得た製剤を含浸させる。
−オフィス:30m3
−空気の置換度(DRA):0.6〜1容積/h
−商標Quartzel(Saint−Gobain Quartz SASの登録商標)の溶融シリカ繊維製のフェルトで、単位面積当たりの質量が65g/m2(媒体の質量は100g/m2)
−清浄器中の公称流量:130m3/h
−受けるUV照射:15mW/cm2
直径5.5mmの溶融シリカのロッドをオキシプロパンバーナー中で延伸して、直径0.2mmのフィラメントにする。次いで、このフィラメントを、火炎延伸ブロー成形によって第2のバーナー中で再び延伸して、平均直径を9μmにして、受取りドラム上に投げ出す。そのドラムの速度を調節して単位面積当たりの質量が50g/m2のフェルトを得る。次いで、得られたフェルトに、下記表11の配合によって調製した製剤を含浸させる。
−清浄器中の公称流量:130m3/h
−受けるUV照射:15mW/cm2
Claims (23)
- 光触媒作用を有し、厚さが少なくとも2mmであり、均質でありかつ肉眼で見える穴のない濾過媒体であって、光触媒作用を有する触媒を含むコーティングで繊維が被覆された無機繊維のフェルトを含み、該フェルトの単位面積当たりの質量が30〜80g/m2であり、前記コーティングが前記濾過媒体の5〜80wt%であり、前記濾過媒体がひだのない状態において1m/sで150Pa未満の気体の圧力低下を示す、濾過媒体。
- ひだのない状態において1m/sで50Pa未満、好ましくは1m/sで20Pa未満の気体の圧力低下を示す、請求項1に記載の濾過媒体。
- 前記コーティングが前記濾過媒体の10〜50wt%である、請求項1または2に記載の濾過媒体。
- 前記触媒が前記濾過媒体の1〜40wt%、好ましくは5〜30wt%の割合で存在する、請求項1〜3のいずれか1項に記載の濾過媒体。
- 前記フェルトが、60kg/m3未満、特には30kg/m3未満の密度を有する、請求項1〜4のいずれか1項に記載の濾過媒体。
- 前記フェルトが、90wt%超のシリカ、特には99wt%以上のシリカを含む繊維構造体である、請求項1〜5のいずれか1項に記載の濾過媒体。
- 厚さが2〜30mmである、請求項1〜6のいずれか1項に記載の濾過媒体。
- 前記コーティングの上に堆積されたポリマーを含み、該ポリマーがフッ素を含むことができ、例えば、PTFEである、請求項1〜7のいずれか1項に記載の濾過媒体。
- 前記ポリマーが前記濾過媒体の0.1〜5wt%の割合で存在する、請求項8に記載の濾過媒体。
- 本質的に鉱物質である、請求項1〜7のいずれか1項に記載の濾過媒体。
- 強熱減量が0.1wt%未満、適切には0.01wt%未満である、請求項1〜7のいずれか1項に記載の濾過媒体。
- 前記光触媒作用を有する触媒が、TiO2、ZnOおよびCeO2からなる群より選択される少なくとも1種の酸化物を含み、好ましくは少なくとも部分的に結晶質の酸化チタンを含む、請求項1〜11のいずれか1項に記載の濾過媒体。
- 前記コーティングが酸化チタンとシリカを含み、Si/Tiモル比が0.25〜1.35、好ましくは0.5〜1.3である、請求項1〜12のいずれか1項に記載の濾過媒体。
- 前記フェルトが、繊維を延伸ブロー成形し、該繊維を前進中の表面上に投げ出すことよって生成される、請求項1〜13のいずれか1項に記載の濾過媒体。
- 前記フェルトが焼結されておらずかつ刺し縫いされていない、請求項1〜14のいずれか1項に記載の濾過媒体。
- 気体清浄器であって、請求項1〜15のいずれか1項に記載の濾過媒体と、該濾過媒体をUV放射で照射するための照射装置と、任意選択で前記気体清浄器を通過する気体の流量を変化させるかおよび/または前記濾過媒体のUV照射の強度を変化させるための手段とを備えた、気体清浄器。
- 前記照射装置が、前記濾過媒体1cm2当たり少なくとも1mWに等しい前記濾過媒体が受ける強度を発するLED、好ましくはUVを備えた、請求項16に記載の気体清浄器。
- 前記照射装置が、光を前記濾過媒体へ運ぶための、少なくとも1つの光ガイド、例えば、光ファイバータイプの少なくとも1つの光ガイドを備えた、請求項16または17に記載の気体清浄器。
- 請求項16〜18のいずれか1項に記載の空気清浄器を複数備え、この複数の清浄器の前記濾過媒体を照射するための単一の源を備え、適切な場合には、光ガイド、例えば、光ファイバータイプの光ガイドを介して前記清浄器に照射が伝達される、空気を浄化するための装置。
- テトラエチルオルトシリケート(TEOS)と、式R’xSi(OR)4-x(式中、RとR’は有機ラジカルであり、xは0〜3の整数である)の少なくとも1種のアルコキシシランを含み、該アルコキシシランの量がTOESの10〜40wt%である組成物を無機繊維のフェルトに含浸させる工程を含む、請求項1〜15のいずれか1項に記載の媒体を製造するための方法。
- 前記アルコキシシランの量がTOESの15〜25wt%である、請求項20に記載の方法。
- 前記アルコキシシランがメチルトリエトキシシラン(MTES)を含む、請求項20または21に記載の方法。
- ATEX環境における請求項10または11に記載の媒体の使用。
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110545917A (zh) * | 2017-04-28 | 2019-12-06 | Ifp 新能源公司 | 含有TiO2的多孔整料及其生产方法 |
JP2020517443A (ja) * | 2017-04-28 | 2020-06-18 | イエフペ エネルジ ヌヴェルIfp Energies Nouvelles | TiO2を含有している細孔性モノリスおよびその製造方法 |
JP7203755B2 (ja) | 2017-04-28 | 2023-01-13 | イエフペ エネルジ ヌヴェル | TiO2を含有している細孔性モノリスおよびその製造方法 |
Also Published As
Publication number | Publication date |
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US20110064638A1 (en) | 2011-03-17 |
EP2175992A2 (fr) | 2010-04-21 |
JP2010535615A (ja) | 2010-11-25 |
US8048391B2 (en) | 2011-11-01 |
WO2009019387A3 (fr) | 2009-06-04 |
KR20100087074A (ko) | 2010-08-03 |
CN101861205B (zh) | 2012-11-28 |
US8617300B2 (en) | 2013-12-31 |
WO2009019387A2 (fr) | 2009-02-12 |
CN101855016B (zh) | 2013-07-17 |
KR20100074120A (ko) | 2010-07-01 |
FR2919811A1 (fr) | 2009-02-13 |
CN101855016A (zh) | 2010-10-06 |
CA2695317A1 (fr) | 2009-02-12 |
MX2010001513A (es) | 2010-06-17 |
EP2175993A1 (fr) | 2010-04-21 |
JP5864101B2 (ja) | 2016-02-17 |
JP5551592B2 (ja) | 2014-07-16 |
FR2919811B1 (fr) | 2010-10-15 |
JP2015171717A (ja) | 2015-10-01 |
CN101861205A (zh) | 2010-10-13 |
US20120063958A1 (en) | 2012-03-15 |
CA2695314A1 (fr) | 2009-02-12 |
WO2009019388A1 (fr) | 2009-02-12 |
MX2010001508A (es) | 2010-06-01 |
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