JP2002166173A - Photocatalyst apparatus - Google Patents
Photocatalyst apparatusInfo
- Publication number
- JP2002166173A JP2002166173A JP2000362741A JP2000362741A JP2002166173A JP 2002166173 A JP2002166173 A JP 2002166173A JP 2000362741 A JP2000362741 A JP 2000362741A JP 2000362741 A JP2000362741 A JP 2000362741A JP 2002166173 A JP2002166173 A JP 2002166173A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- light
- photoactive
- photoactive catalyst
- granular
- 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.)
- Pending
Links
- 239000011941 photocatalyst Substances 0.000 title claims description 15
- 239000003054 catalyst Substances 0.000 claims abstract description 79
- 239000000835 fiber Substances 0.000 claims abstract description 11
- 239000003365 glass fiber Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 3
- 230000001699 photocatalysis Effects 0.000 claims description 3
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 3
- 230000003197 catalytic effect Effects 0.000 abstract description 8
- 238000009940 knitting Methods 0.000 abstract description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 21
- 239000011324 bead Substances 0.000 description 8
- 239000011521 glass Substances 0.000 description 8
- 238000006555 catalytic reaction Methods 0.000 description 6
- 239000008187 granular material Substances 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000004397 blinking Effects 0.000 description 2
- QXJJQWWVWRCVQT-UHFFFAOYSA-K calcium;sodium;phosphate Chemical compound [Na+].[Ca+2].[O-]P([O-])([O-])=O QXJJQWWVWRCVQT-UHFFFAOYSA-K 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Catalysts (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、光活性触媒体を用
いた光触媒装置に関する。[0001] The present invention relates to a photocatalyst device using a photoactive catalyst.
【０００２】[0002]
【従来の技術】光触媒装置は、光活性触媒体を、セラミ
ックや樹脂類に練り込んだり、担持体に接着剤で接着し
たり、また、網やスプリングで挟持してなるものであ
る。この光活性触媒体は、光の照射を受けて触媒反応が
始まるものであるが、セラミックや樹脂類に練り込んで
形成された光触媒装置は、受光面積、及び、触媒活性を
有する有効表面積が狭くなり、触媒効率が低くなるとい
う問題があった。2. Description of the Related Art A photocatalytic device is one in which a photoactive catalyst is kneaded in ceramic or resin, adhered to a carrier with an adhesive, or sandwiched by a net or a spring. This photoactive catalyst is a catalyst that starts a catalytic reaction upon irradiation with light.However, a photocatalytic device formed by kneading ceramics or resins has a small light receiving area, and an effective surface area having catalytic activity is small. Therefore, there is a problem that the catalyst efficiency is lowered.
【０００３】また、担持体に接着剤で定着させる場合、
接着成分が触媒作用によって分解されて無効にならない
接着剤を用いなければならず、接着剤の種類及び用途が
限定される上、触媒の有効表面積が狭くなり、触媒効率
が悪くなるという問題があった。また、網やスプリング
に挟持する場合には、形状が限定され、限られた用途に
しか用いることができず、また、触媒に対する光の照射
方法によっては、その網やスプリングにより影が形成さ
れ、触媒効率が低くなり、さらに、触媒体が物理的に結
合されていないので、振動などにより触媒体が脱落しや
すく、洗浄し難いという問題があった。[0003] Further, when fixing to a carrier with an adhesive,
It is necessary to use an adhesive that does not become ineffective due to the decomposition of the adhesive component by the catalytic action, which limits the type and use of the adhesive, and also reduces the effective surface area of the catalyst and deteriorates the catalytic efficiency. Was. Also, when sandwiched between nets and springs, the shape is limited, it can be used only for limited applications, and depending on the method of irradiating the catalyst with light, shadows are formed by the nets and springs, Since the catalyst efficiency is lowered and the catalyst body is not physically bonded, there is a problem that the catalyst body easily falls off due to vibration or the like, and it is difficult to wash the catalyst body.
【０００４】[0004]
【発明が解決しようとする課題】本発明は上記の問題を
解決するためになされたものであり、その目的は、光活
性触媒体の触媒効率を高めると共に、破損させることな
く容易に洗浄できるようにし、省エネルギーで高効率の
触媒装置を提供することにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to increase the catalytic efficiency of a photoactive catalyst and to easily clean the photoactive catalyst without breaking it. Another object of the present invention is to provide an energy-saving and highly efficient catalyst device.
【０００５】[0005]
【課題を解決するための手段】上記の問題は、透光性繊
維を細長く円筒網状に編成してなる触媒保持体内に、顆
粒状の光活性触媒体を充填することによって達成され
る。透光性繊維としては、ガラス繊維、４フッ化エチレ
ン樹脂が推奨され、また、触媒保持体内に充填される顆
粒状の光活性触媒体中に、透明粒子を混合、介在させる
ことが推奨される。また、この触媒保持体に保持された
光活性触媒体に対して、輪番的に発光する複数の光源か
ら光線を照射するようにすることが推奨される。The above-mentioned problems can be solved by filling a granular photoactive catalyst into a catalyst holding body formed by knitting light-transmitting fibers into a long and narrow cylindrical network. As the translucent fiber, glass fiber and tetrafluoroethylene resin are recommended, and it is recommended that transparent particles are mixed and interposed in the granular photoactive catalyst filled in the catalyst holder. . It is also recommended that the photoactive catalyst body held by the catalyst holding body be irradiated with light rays from a plurality of light sources that emit light in a rotating manner.
【０００６】[0006]
【発明の実施の形態】本発明に係る光触媒装置は、透光
性繊維を編むなどして細長く円筒網状に編成してなる触
媒保持体内に、顆粒状の光活性触媒体を充填したもので
ある。この光活性触媒体としては、例えば、SiＯ2を、
ガラスセラミックス金属などの高反射、高透光性の素材
でコーティングしたものが用いられる。また、上記の光
触媒装置に対し、光エキサイトにより、光活性触媒体に
対し、触媒反応に必要な最小限の照射エネルギーで光を
照射し得るよう、複数の光源を輪番的に発光させること
が推奨される。BEST MODE FOR CARRYING OUT THE INVENTION A photocatalyst device according to the present invention is a device in which a granular photoactive catalyst is filled in a catalyst holder formed by knitting light-transmitting fibers into an elongated cylindrical mesh. . As the photoactive catalyst, for example, SiO 2 is used.
Those coated with a highly reflective and highly translucent material such as glass ceramic metal are used. In addition, it is recommended that multiple light sources be rotated in order to emit light to the photocatalyst device with the minimum irradiation energy required for the catalytic reaction by the photoexcited photocatalyst with the photoexcited device. Is done.
【０００７】一般的に、光源を電池により発光させる場
合、発光時間と動作電流との関係は、次のようになる。Generally, when a light source emits light from a battery, the relationship between the light emission time and the operating current is as follows.
【数式１】ＫＨ＝Ａ-2・・・(1) Ｋ：電流の特質による定数（アルカリ電池の場合：920
0） Ａ：放電電流（mA） Ｈ：寿命時間（単一型アルカリ電池の場合：7.8×10
5Ｈ） このため、単一型アルカリ電池を用いて放電電流を65mA
とすると、寿命時間は188時間、同じく130mAの場合に
は、40時間となり、長時間発光させたい場合には、放電
電流を低く押さえることが臨まれる。また、従来の光触
媒装置、例えば、触媒保持体が、直径0.3mmの金属線を
１mm間隔で巻き取ってなる、直径４mm、長さ４ｍのコイ
ルスプリングの場合、コイルスプリングの外部から光線
を照射すると、スプリング自体により、その内部空間の
約30％に影ができる。[Formula 1] KH = A− 2 (1) K: Constant depending on the characteristic of current (in the case of an alkaline battery: 920
0) A: Discharge current (mA) H: Life time (for a single alkaline battery: 7.8 × 10
5 H) Thus, the discharge current using a single alkaline battery 65mA
In this case, the life time is 188 hours, and in the case of 130 mA, it is 40 hours, and if it is desired to emit light for a long time, the discharge current is expected to be kept low. Further, in the case of a conventional photocatalyst device, for example, a catalyst holder, a coil spring having a diameter of 4 mm and a length of 4 m formed by winding a metal wire having a diameter of 0.3 mm at intervals of 1 mm, when light is irradiated from outside the coil spring. The spring itself casts shadows on about 30% of its internal space.
【０００８】また、このコイルスプリングの表面を磨く
などして、その表面反射率を80ないし90％に高めると、
光線が乱反射し、その影は、15％まで低減される。一
方、透光性繊維、例えば、直径20μのガラス繊維を綾状
に編んでチューブ状にした織りチューブを用いた場合、
影は10％となる。従って、透光性繊維製の触媒保持体を
用いた方が、コイルスプリングを用いたものより、内部
に充填された光活性触媒体に省エネルギーで効率よく光
線を照射し得ることが判明した。When the surface reflectance of the coil spring is increased to 80 to 90% by polishing the surface of the coil spring, etc.,
The light is diffusely reflected and its shadow is reduced to 15%. On the other hand, in the case of using a woven tube in which a light-transmitting fiber, for example, a glass fiber having a diameter of 20 μ is knitted in a twill shape into a tube shape,
The shadow is 10%. Therefore, it has been found that the use of the catalyst holder made of a light-transmitting fiber makes it possible to irradiate a light beam more efficiently with energy saving to the photoactive catalyst filled therein than the one using a coil spring.
【０００９】また、光活性触媒体としては、粒状、顆粒
状、粉状の三態様が考えられるが、粒状、粉状の場合、
光活性触媒体に、その体積の20％程度、直径0.1ないし
１mの透明ガラス球を混在させると、ガラス球がない場
合と比較して光活性触媒体に対する光線到達率が最大45
％程度改善される。顆粒状の光活性触媒体は、それ自体
のみでも、粒状及び粉状のものより、もともと光線到達
率がかなり高いが、これに上記と同様にガラス球を混在
させると、その光線到達率は更に30％増大する。もちろ
ん、透明合成繊維でもほぼ同様となる。[0009] The photoactive catalyst may be in the form of granules, granules, or powders.
When transparent glass spheres having a diameter of about 0.1 to 1 m are mixed with the photoactive catalyst at about 20% of its volume, the light arrival rate to the photoactive catalyst at a maximum of 45 times as compared with the case without glass spheres.
% Improvement. The granular photoactive catalyst itself, by itself, has a considerably higher light arrival rate than the granular and powdery ones. Increase by 30%. Of course, the same applies to transparent synthetic fibers.
【００１０】次に、図面に基づき、本発明に係る光触媒
装置について説明する。図１は本発明に係る光触媒装置
の主要構成を示す部分側面図である。図中、１は触媒保
持体、２は光活性触媒体、３は透明体粒子、４は光源で
ある。触媒保持体１は、ガラス繊維を細長く円筒網状に
編成してなるものである。光活性触媒体２は、従来公知
の光活性触媒を顆粒状に加工し、触媒保持体１内に挿入
し得る程度の径の円柱体状に造粒したものである。透明
体粒子３は、直径が光活性触媒体２の円柱径より若干小
さい球状のガラスビーズである。Next, a photocatalyst device according to the present invention will be described with reference to the drawings. FIG. 1 is a partial side view showing a main configuration of a photocatalyst device according to the present invention. In the figure, 1 is a catalyst support, 2 is a photoactive catalyst, 3 is transparent particles, and 4 is a light source. The catalyst holder 1 is formed by knitting glass fibers into a slender cylindrical mesh. The photoactive catalyst 2 is obtained by processing a conventionally known photoactive catalyst into granules, and granulating the photoactive catalyst into a cylindrical shape having a diameter that can be inserted into the catalyst holder 1. The transparent particles 3 are spherical glass beads whose diameter is slightly smaller than the cylindrical diameter of the photoactive catalyst 2.
【００１１】光活性触媒体２と、透明体粒子３は、図１
に示したように、触媒保持体１内に交互に挿入される。
光源４は、複数のLEDである。この光源４は、２ライン
に分割されており、多パルススイッチング回路により制
御され、輪番的に交互に点滅するようになっている。こ
の実施例では、触媒保持体１及び光源４は、図示しない
浄化槽内に配設され、内部に浄化処理すべき気体を導入
し、所定のパターンで点滅し、触媒反応が行われるよう
になっている。The photoactive catalyst 2 and the transparent particles 3 are shown in FIG.
Are alternately inserted into the catalyst holder 1 as shown in FIG.
The light source 4 is a plurality of LEDs. The light source 4 is divided into two lines, controlled by a multi-pulse switching circuit, and alternately flashes in a rotating manner. In this embodiment, the catalyst holder 1 and the light source 4 are disposed in a purification tank (not shown), and a gas to be purified is introduced thereinto, flickers in a predetermined pattern, and a catalytic reaction is performed. I have.
【００１２】気体の浄化により、触媒保持体１、光活性
触媒体２及び透明体粒子３に汚染物質が付着し、触媒効
率が低下した場合、触媒保持体１を取り出すなどして光
活性触媒体２を破損することなく洗浄することができ
る。なお、上記の実施例では、透光性繊維としてガラス
繊維を用いたが、ある程度の透光性、強度、耐分解性が
確保できる繊維、例えば、４フッ化エチレン樹脂といっ
た樹脂などを用いて触媒保持体を編成するようにしても
よい。When the purification of the gas causes contaminants to adhere to the catalyst holder 1, the photoactive catalyst 2 and the transparent particles 3 and reduce the catalytic efficiency, the catalyst holder 1 is removed and the photoactive catalyst is removed. 2 can be washed without being damaged. In the above embodiment, glass fiber is used as the light-transmitting fiber. However, a fiber that can secure a certain degree of light-transmitting property, strength, and decomposition resistance, for example, using a resin such as a tetrafluoroethylene resin as a catalyst. The holding body may be knitted.
【００１３】[0013]
【実施例】〔実施例１〕光源として、発光照度３cd、波
長430nmの高能率のLEDを用い、光活性触媒体の材料とし
て、粒径10ないし30nm、純度99.5％のTiＯ2を焼結して
アナターゼ結晶とし、粒状とし、バルク密度1.05、破砕
強度60Ｎに成形した。表面積と重量の関係は45m2/g、ポ
アー寸法は10ないし30nmであった。[Example 1] As a light source, a high-efficiency LED having a light emission illuminance of 3 cd and a wavelength of 430 nm was used, and TiO 2 having a particle size of 10 to 30 nm and a purity of 99.5% was sintered as a material for the photoactive catalyst. Anatase crystals were formed into granules, and formed into a bulk density of 1.05 and a crushing strength of 60N. The relationship between surface area and weight was 45 m 2 / g and pore size was 10 to 30 nm.
【００１４】このTiO2アナターゼ顆粒体の表面に、１な
いし10nmサイズのPtを重量比で0.3％程度（ポアーを含
む）析出させ、光活性有効波長を430ないし650nm程度ま
で広げたものを直径３mmのほぼ球体に造粒して顆粒状に
し、これを触媒体とした。直径0.32mmのステンレス鋼線
（黒仕上）製であって、コイルピッチ１mm、コイル外径
3.64mm、長さ５ｍのコイルスプリングを触媒保持体と
し、この内部に上記の触媒体を充填した。On the surface of the TiO 2 anatase granules, Pt of 1 to 10 nm size is precipitated by about 0.3% (including pores) by weight ratio, and the photoactive effective wavelength is expanded to about 430 to 650 nm to obtain a 3 mm diameter. Was granulated into substantially spherical particles to obtain granules, which were used as catalysts. 0.32mm diameter stainless steel wire (black finish), coil pitch 1mm, coil outer diameter
A coil spring having a length of 3.64 mm and a length of 5 m was used as a catalyst support, and the inside of the catalyst support was filled.
【００１５】光源に電流を供給する電源として、On時間
１ないし100μs、Off時間100μsないし10msで、Ipeakが
100mAのマルチバイブレーターを使用した。発信はリン
グカウンター方式でトライバーとした。グランシングア
ングル30°、波長430nmのLEDを10個使用し、30ｇの触媒
体に対して光線を照射した。濃度100ppmのホルムアルデ
ヒド含む気体に対し、上記の光触媒装置を用い、下記の
ように、LEDのOn、Off時間が異なる四種類の発光パター
ンでそれぞれ光線を照射し、２時間後の消費電流量と、
処理後の気体中のホルムアルデヒドの濃度を測定した。As a power source for supplying a current to the light source, Ipeak is set to 1 to 100 μs on time and 100 μs to 10 ms off time.
A 100 mA multivibrator was used. The call was sent to the tribar by the ring counter method. Using 10 LEDs having a glance angle of 30 ° and a wavelength of 430 nm, 30 g of the catalyst was irradiated with light. For a gas containing formaldehyde at a concentration of 100 ppm, using the above photocatalyst device, as shown below, the on and off times of the LEDs are irradiated with light beams in four different light emission patterns, and the amount of current consumption after 2 hours,
The concentration of formaldehyde in the gas after the treatment was measured.
【００１６】この測定結果を比較するため、上記の触媒
体に対し、光源としてUV４Ｗランプによって光線を２時
間連続照射し、その消費電流量及び処理後の気体中のホ
ルムアルデヒドの濃度を測定した。上記の測定結果を
〔表１〕に示す。In order to compare the measurement results, the above-mentioned catalyst was continuously irradiated with a light beam from a UV4W lamp as a light source for 2 hours, and the amount of consumed current and the concentration of formaldehyde in the gas after the treatment were measured. The above measurement results are shown in [Table 1].
【表１】 この実験の結果、光線照射時間は、１μsでは、触媒と
して充分に機能せず、試験Ｂ及びＤの発光パターンで光
線を照射すると省電力で効率よく触媒が作用することが
判明した。[Table 1] As a result of this experiment, it was found that when the light irradiation time was 1 μs, the catalyst did not function sufficiently, and when the light irradiation was performed in the light emission patterns of Tests B and D, the catalyst worked efficiently with low power consumption.
【００１７】〔実施例２〕実施例１と同様の光触媒装置
を用い、LEDのOn時間を２、３、４、５、７、８、９及
び10μs、Off時間を各On時間の×50とし、実施例１と同
様に、七種類の発光パターンでそれぞれ触媒反応を行わ
せた。この触媒反応の結果、LEDのOn時間が４ないし５
μs以上では、ホルムアルデヒドの分解量は一定となっ
た。従って、LEDのOn時間が５μs、Off時間が５msの発
光パターンが最良の組み合わせとなる。第一実施例の結
果と合わせ、この発光パターンで触媒反応を行わせる
と、消費電流量は、UV４Wランプを用いる場合に比べ1/1
000となるが、このOn、Offを制御するスイッチが１個の
場合、20％のスイッチング損失となる。[Embodiment 2] Using the same photocatalyst device as in Embodiment 1, the ON time of the LED was set to 2, 3, 4, 5, 7, 8, 9, 9 and 10 μs, and the OFF time was set to × 50 of each ON time. In the same manner as in Example 1, a catalytic reaction was performed in each of seven types of light emission patterns. As a result of this catalytic reaction, the LED on time is 4 to 5
Above μs, the amount of formaldehyde decomposition was constant. Therefore, the best combination is a light emitting pattern in which the LED on time is 5 μs and the off time is 5 ms. In combination with the result of the first embodiment, when the catalytic reaction is performed with this light emission pattern, the amount of current consumption is 1/1 times that in the case of using a UV4W lamp.
000, but if there is only one switch for controlling the On and Off, the switching loss is 20%.
【００１８】〔実施例３〕LEDが４cdの場合、65mAのエ
キサイト電流が必要である。従って、10個のLEDを並列
に接続し、１個のスイッチでアルカリ電池を用いて点滅
させる場合、〔数式１〕によると、その電池の寿命は1.
29時間となり、61日間点灯させることができる。このス
イッチを３マルチスイッチに置き換え、点滅を制御する
ようにすると、683日間、即ち、約２年間点滅させ続け
ることができるようになり、１個の単純なスイッチで制
御する場合と比べ、電池の寿命が約10倍に延びる。[Embodiment 3] When the LED is 4 cd, an exciting current of 65 mA is required. Therefore, when 10 LEDs are connected in parallel and one switch is used to blink using an alkaline battery, according to [Equation 1], the life of the battery is 1.
It is 29 hours and can be turned on for 61 days. If this switch is replaced with a 3 multi-switch and the blinking is controlled, the blinking can be continued for 683 days, that is, for about 2 years. Life is extended about 10 times.
【００１９】〔実施例４〕実施例１に記載した試験Ｄで
用いた触媒保持体の表面にクロームメッキを施したコイ
ルスプリング、及び、ガラス繊維製の織りチューブを触
媒保持体とし、実施例１の試験Ｄと同様の試験を行い、
処理後の気体中に含まれるホルムアルデヒドの濃度を測
定した。実施例１で示したように、黒仕上のコイルスプ
リングを用いた場合、ホルムアルデヒドの残存濃度は1
6.4ppmであったが、クロームメッキを施したものでは1
3.9ppmとなり、触媒効率が向上した。さらに、ガラス繊
維製の織りチューブを持ちいた場合では、その濃度は1
2.35ppmとなり、クロームメッキを施したものよりも触
媒効率が優れることが判明した。Example 4 A coil spring in which the surface of the catalyst holder used in Test D described in Example 1 was subjected to chrome plating and a woven tube made of glass fiber were used as the catalyst holder. A test similar to test D of
The concentration of formaldehyde contained in the gas after the treatment was measured. As shown in Example 1, when a coil spring with a black finish is used, the residual concentration of formaldehyde is 1
6.4ppm, but 1% for chrome plated
It became 3.9 ppm, and the catalyst efficiency improved. In addition, if you have a glass fiber woven tube, the concentration will be 1
It turned out to be 2.35 ppm, which means that the catalyst efficiency is superior to that of the chrome-plated one.
【００２０】〔実施例５〕ガラス繊維を内径４mm強の円
筒網状に編成してなる触媒保持体に、直径0.3mmの顆粒
状の光活性触媒体を充填したもの、上記の光活性触媒体
に直径0.5mmの透明ガラスビーズを体積比で20％混合し
たものを充填したもの、及び、直径４mm、長さ４mmに造
粒された顆粒状光活性触媒体を、間に直径3.5ｍｍのガ
ラスビーズを挟みながら交互に触媒保持体内に挿入した
ものに対し、UVランプ４Wを連続照射することにより、
実施例１と同様の気体を処理した。ガラスビーズを介在
させなかったものによる気体中の残留ホルムアルデヒド
濃度は、20ppm、ガラスビーズが体積比で20％混在する
ものでは19.2ppm、造粒された触媒体とガラスビーズと
が交互に配置されたものでは17ppmとなった。この結
果、光活性触媒体にガラスビーズを混在させた方が、更
には、交互に規則正しく配列した方が、触媒効率が高ま
ることが判明した。Example 5 A catalyst holder made of glass fibers knitted into a cylindrical network having an inner diameter of just over 4 mm and filled with a granular photoactive catalyst having a diameter of 0.3 mm. A mixture of transparent glass beads having a diameter of 0.5 mm and a mixture of 20% by volume ratio, and a granular photoactive catalyst granulated to a diameter of 4 mm and a length of 4 mm are interposed between glass beads of a diameter of 3.5 mm. By continuously irradiating the UV lamp 4W to the one inserted alternately in the catalyst holder while sandwiching
The same gas as in Example 1 was treated. The residual formaldehyde concentration in the gas without glass beads was 20 ppm, and 19.2 ppm in the case where glass beads were mixed at 20% by volume ratio, and the granulated catalyst and glass beads were alternately arranged. It was 17 ppm. As a result, it was found that when the glass beads were mixed with the photoactive catalyst, and when the glass beads were alternately and regularly arranged, the catalyst efficiency was increased.
【００２１】[0021]
【発明の効果】本発明は上記のように構成されるので、
本発明によるときは、光活性触媒体の触媒効率が高まる
と共に、破損させずに容易に洗浄できるようになり、省
エネルギーで高効率の触媒作用を望めるようになる。Since the present invention is configured as described above,
According to the present invention, the catalytic efficiency of the photoactive catalyst body is increased, and the photoactive catalyst body can be easily washed without being damaged, so that a high-efficiency catalytic action with energy saving can be expected.
【図１】本発明に係る光触媒装置の主要構成を示す部分
側面図である。FIG. 1 is a partial side view showing a main configuration of a photocatalyst device according to the present invention.
１ 触媒保持体 ２ 光活性触媒体 ３ 透明体粒子 ４ 光源 DESCRIPTION OF SYMBOLS 1 Catalyst holder 2 Photoactive catalyst 3 Transparent particle 4 Light source
Claims (5)
なる触媒保持体（１）内に、顆粒状の光活性触媒体
（２）を充填してなる光触媒装置。1. A photocatalyst device comprising: a catalyst support (1) comprising light-transmitting fibers knitted in an elongated cylindrical network; and a granular photoactive catalyst (2) filled in the catalyst support (1).
の光触媒装置。2. The photocatalyst device according to claim 1, wherein the fibers are glass fibers.
求項１に記載の光触媒装置。3. The photocatalytic device according to claim 1, wherein the fibers are made of a tetrafluoroethylene resin.
（３）を混合、介在させた請求項１ないし３のいずれか
一に記載の光触媒装置。4. The photocatalyst device according to claim 1, wherein transparent particles (3) are mixed and interposed in the granular photoactive catalyst pair.
照射する複数の光源（４）を具備した請求項１ないし４
のいずれか一に記載の光触媒装置。5. A method according to claim 1, further comprising a plurality of light sources which emit light in a rotating manner and irradiate the photoactive catalyst with light.
The photocatalyst device according to any one of the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000362741A JP2002166173A (en) | 2000-11-29 | 2000-11-29 | Photocatalyst apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000362741A JP2002166173A (en) | 2000-11-29 | 2000-11-29 | Photocatalyst apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002166173A true JP2002166173A (en) | 2002-06-11 |
Family
ID=18833965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000362741A Pending JP2002166173A (en) | 2000-11-29 | 2000-11-29 | Photocatalyst apparatus |
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| Country | Link |
|---|---|
| JP (1) | JP2002166173A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009090260A (en) * | 2007-10-12 | 2009-04-30 | Meidensha Corp | Photocatalyst excitation method, cleaning method and apparatus thereof |
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|---|---|---|---|---|
| JPH07108175A (en) * | 1993-08-19 | 1995-04-25 | Mitsubishi Paper Mills Ltd | Photoreactive harmful substance removing material |
| JPH09940A (en) * | 1995-06-19 | 1997-01-07 | Toyoda Gosei Co Ltd | Photocatalytst device and its application device |
| JPH09299809A (en) * | 1996-05-09 | 1997-11-25 | Ishihara Sangyo Kaisha Ltd | Harmful substance removing agent, its preparation, and harmful substance removing method using the agent |
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| JP2000061316A (en) * | 1998-08-21 | 2000-02-29 | Nitto Denko Corp | Structure of ventilating photocatalystic sheet |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009090260A (en) * | 2007-10-12 | 2009-04-30 | Meidensha Corp | Photocatalyst excitation method, cleaning method and apparatus thereof |
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