JP2005199256A - Deodorant, its production method, and deodorization device - Google Patents

Deodorant, its production method, and deodorization device Download PDF

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JP2005199256A
JP2005199256A JP2004137328A JP2004137328A JP2005199256A JP 2005199256 A JP2005199256 A JP 2005199256A JP 2004137328 A JP2004137328 A JP 2004137328A JP 2004137328 A JP2004137328 A JP 2004137328A JP 2005199256 A JP2005199256 A JP 2005199256A
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iodine
activated carbon
acid
deodorant
deodorizing
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JP4639276B2 (en
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Seiji Ichii
勢治 一居
Atsushi Higuchi
篤志 樋口
Kiyoshi Mizushima
清 水嶋
Ken Nakatsuyama
憲 中津山
Tomokazu Furukawa
友和 古川
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HOKUTAN KASEI KOGYO KK
Shimizu Construction Co Ltd
Shimizu Corp
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HOKUTAN KASEI KOGYO KK
Shimizu Construction Co Ltd
Shimizu Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide; a deodorant capable of corresponding to hydrogen sulfide, methyl sulfide, and ammonia with one kind of deodorant, and maintaining excellent deodorizing effect for a long time period; its production method capable of producing the deodorant with high productivity; and a deodorization device with simple structure and no trouble for maintenance. <P>SOLUTION: The deodorant contains active carbon to which iodine, oxo acid of iodine or oxide of iodine, and inorganic acid are deposited. The production method of the deodorant makes iodine deposit to the active carbon, then makes oxo acid of iodine or oxide of iodine, and inorganic acid deposit thereto. The deodorization device is equipped with a filling part filled with the deodorant. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、脱臭剤、その製造方法および脱臭装置に関する。   The present invention relates to a deodorizing agent, a production method thereof, and a deodorizing apparatus.

し尿処理施設、下水処理施設、ゴミ処理施設、事務所ビルの廃水処理施設等から排出される排ガスには、硫化水素、硫化メチル、アンモニアなど、悪臭の原因となる物質が含まれている。そのため、排ガスを大気中に放出する前に、排ガスを脱臭処理して、悪臭の原因物質を除去する必要がある。   Exhaust gas discharged from human waste treatment facilities, sewage treatment facilities, waste treatment facilities, wastewater treatment facilities in office buildings, and the like contains substances that cause bad odors such as hydrogen sulfide, methyl sulfide, and ammonia. Therefore, before releasing the exhaust gas into the atmosphere, it is necessary to deodorize the exhaust gas to remove the odor-causing substance.

このような脱臭処理に用いられる脱臭剤としては、活性炭による物理的な吸着に加え、酸化剤による原因物質の酸化によって脱臭を行うものが知られている。具体的には、硫化水素を酸化するヨウ素のオキソ酸を活性炭に添着させた脱臭剤(特許文献1参照)、硫化水素を酸化するヨウ素のオキソ酸の金属塩を活性炭に添着させた脱臭剤(特許文献2参照)、およびヨウ素のオキソ酸またはヨウ素の酸化物と、無機酸とを活性炭に添着させた脱臭剤(特許文献3参照)が知られている。   As a deodorizing agent used for such a deodorizing treatment, a deodorizing agent is known which performs deodorization by oxidizing a causative substance with an oxidizing agent in addition to physical adsorption by activated carbon. Specifically, a deodorant in which iodine oxo acid that oxidizes hydrogen sulfide is added to activated carbon (see Patent Document 1), a deodorant in which a metal salt of iodine oxo acid that oxidizes hydrogen sulfide is added to activated carbon ( Patent Document 2), and deodorizers (see Patent Document 3) in which an oxo acid of iodine or an oxide of iodine and an inorganic acid are attached to activated carbon are known.

これら脱臭剤は、酸性である硫化水素の除去については優れた効果を発揮するものの、その他の悪臭の原因物質、例えば、アルカリ性であるアンモニアや中性である硫化メチルに対しては必ずしも十分な効果がなかった。   Although these deodorizers have an excellent effect on removing acidic hydrogen sulfide, they are not necessarily effective against other odor-causing substances such as alkaline ammonia and neutral methyl sulfide. There was no.

そのため、従来の脱臭処理においては、例えば図5に示すように、臭気ガス入口11から処理ガス出口12に向かって順に、アンモニア、トリメチルアミンなどのアルカリ性物質に効果的に働く脱臭剤が充填された層13、硫化水素、メチルメルカプタンなどの酸性物質に効果的に働く脱臭剤が充填された層14、および硫化メチル、二硫化メチルなどの中性物質に効果的に働く脱臭剤が充填された層15からなる3層構造の脱臭装置10で対応せざるを得なかった。そのため、脱臭装置の構造が複雑になり、設備費がかさむ、脱臭剤の交換頻度が多くなり、維持管理に手間がかかる、などの問題があった。
特公昭62−9377号公報 特公平5−64066号公報 特公平6−6151号公報
Therefore, in the conventional deodorization treatment, for example, as shown in FIG. 5, a layer filled with a deodorizer that works effectively on alkaline substances such as ammonia and trimethylamine in order from the odor gas inlet 11 toward the treatment gas outlet 12. 13. Layer 14 filled with a deodorant that effectively works on acidic substances such as hydrogen sulfide and methyl mercaptan, and layer 15 filled with a deodorant that works effectively on neutral substances such as methyl sulfide and methyl disulfide The three-layer deodorizing device 10 made of As a result, the structure of the deodorizing apparatus is complicated, the equipment cost is increased, the frequency of replacement of the deodorizing agent is increased, and the maintenance is troublesome.
Japanese Patent Publication No.62-9377 Japanese Patent Publication No. 5-64066 Japanese Patent Publication No. 6-6151

よって本発明の目的は、1種類の脱臭剤で、硫化水素などの酸性の悪臭の原因物質、硫化メチルなどの中性の悪臭の原因物質に対応でき、しかも、優れた脱臭効果を長期間維持できる脱臭剤、このような脱臭剤を生産性よく製造できる製造方法、および構造が単純で、維持管理に手間がかからない脱臭装置を提供することにある。
また、本発明の目的は、さらに、アンモニアなどのアルカリ性の悪臭の原因物質にも対応できる脱臭剤、その製造方法、および、構造がさらに単純で、維持管理に手間がかからない脱臭装置を提供することにある。
Therefore, the object of the present invention is to use one kind of deodorizing agent, which can cope with acidic odor-causing substances such as hydrogen sulfide and neutral odor-causing substances such as methyl sulfide, and also maintains an excellent deodorizing effect for a long time. It is an object of the present invention to provide a deodorizing agent that can be produced, a production method capable of producing such a deodorizing agent with high productivity, and a deodorizing apparatus that has a simple structure and does not require time and effort for maintenance.
Another object of the present invention is to provide a deodorizer capable of dealing with causative substances of alkaline malodor such as ammonia, a method for producing the deodorizer, and a deodorizing apparatus having a simpler structure and less troublesome to maintain. It is in.

本発明の脱臭剤は、ヨウ素と、ヨウ素のオキソ酸またはヨウ素の酸化物とが付着した活性炭を含有することを特徴とするものである。
ここで、前記活性炭には、さらに無機酸が付着していることが望ましい。
また、前記無機酸は、塩酸または硫酸であることが望ましく、特に硫酸が望ましい。
The deodorizing agent of the present invention is characterized by containing activated carbon to which iodine and iodine oxo acid or iodine oxide are attached.
Here, it is desirable that an inorganic acid is further adhered to the activated carbon.
The inorganic acid is desirably hydrochloric acid or sulfuric acid, and sulfuric acid is particularly desirable.

また、本発明の脱臭剤の製造方法は、活性炭にヨウ素を付着させた後、さらにヨウ素のオキソ酸またはヨウ素の酸化物を付着させることを特徴とする方法である。
また、本発明の脱臭剤の製造方法は、活性炭にヨウ素を付着させた後、さらにヨウ素のオキソ酸またはヨウ素の酸化物、および無機酸を付着させることを特徴とする方法である。
The method for producing a deodorizer of the present invention is a method characterized in that iodine is attached to activated carbon, and then iodine oxoacid or iodine oxide is further attached.
The method for producing a deodorizer of the present invention is a method characterized in that iodine is attached to activated carbon, and then an iodine oxo acid or iodine oxide and an inorganic acid are further attached.

また、本発明の脱臭装置は、本発明の脱臭剤が充填された脱臭部を具備することを特徴とするものである。   Moreover, the deodorizing apparatus of this invention comprises the deodorizing part with which the deodorizing agent of this invention was filled.

本発明の脱臭剤は、ヨウ素と、ヨウ素のオキソ酸またはヨウ素の酸化物とが付着した活性炭を含有しているので、1種類の脱臭剤で、硫化水素などの酸性の悪臭の原因物質、硫化メチルなどの中性の悪臭の原因物質に対応でき、しかも、優れた脱臭効果を長期間維持できる。
また、前記活性炭に、さらに無機酸が付着していれば、アンモニアなどのアルカリ性の悪臭の原因物質にも対応可能となる。
また、前記無機酸が、塩酸または硫酸であれば、アンモニアなどのアルカリ性の悪臭の原因物質に対する脱臭効果がさらに向上し、その効果をさらに長期間維持できる。
Since the deodorizer of the present invention contains activated carbon to which iodine and iodine oxo acid or iodine oxide are attached, it is a single type of deodorizer, which causes acidic malodors such as hydrogen sulfide, sulfide It can cope with neutral odor-causing substances such as methyl, and can maintain an excellent deodorizing effect for a long time.
Further, if an inorganic acid is further adhered to the activated carbon, it is possible to cope with an alkaline odor-causing substance such as ammonia.
Moreover, if the said inorganic acid is hydrochloric acid or a sulfuric acid, the deodorizing effect with respect to the causative substance of alkaline malodors, such as ammonia, further improves, and the effect can be maintained for a long period of time.

また、本発明の脱臭剤の製造方法は、活性炭にヨウ素を付着させた後、さらにヨウ素のオキソ酸またはヨウ素の酸化物を付着させる方法であるので、酸性および中性の悪臭の原因物質に対応でき、しかも、優れた脱臭効果を長期間維持できる脱臭剤を生産性よく製造できる。
また、本発明の脱臭剤の製造方法は、活性炭にヨウ素を付着させた後、さらにヨウ素のオキソ酸またはヨウ素の酸化物、および無機酸を付着させる方法であるので、酸性、中性およびアルカリ性の悪臭の原因物質に対応でき、しかも、優れた脱臭効果を長期間維持できる脱臭剤を生産性よく製造できる。
In addition, since the method for producing a deodorizer of the present invention is a method in which iodine is attached to activated carbon, and further, an oxo acid of iodine or an oxide of iodine is attached, so that it can cope with acidic and neutral odor-causing substances. In addition, a deodorant capable of maintaining an excellent deodorizing effect for a long time can be produced with high productivity.
In addition, since the method for producing the deodorizer of the present invention is a method in which iodine is attached to activated carbon, and then an oxo acid of iodine or an oxide of iodine and an inorganic acid are further attached. It is possible to produce a deodorizer capable of dealing with malodor-causing substances and maintaining an excellent deodorizing effect for a long period of time with high productivity.

また、本発明の脱臭装置は、本発明の脱臭剤が充填された充填部を具備するものであるので、構造が単純で、維持管理に手間がかからない。   Moreover, since the deodorizing apparatus of this invention comprises the filling part filled with the deodorizing agent of this invention, its structure is simple and it does not require time and effort for maintenance.

以下、本発明を詳しく説明する。
<脱臭剤>
本発明の脱臭剤は、少なくともヨウ素と、ヨウ素のオキソ酸またはヨウ素の酸化物とが付着した活性炭を含有するものであり、好ましくは、ヨウ素と、ヨウ素のオキソ酸またはヨウ素の酸化物と、無機酸とが付着した活性炭を含有するものである。ここで、本発明における「付着」とは、活性炭の表面に単に添うようについた「添着」や、活性炭の微細孔中に吸い込まれてついた「吸着」の意味を含むものである。
The present invention will be described in detail below.
<Deodorizer>
The deodorizer of the present invention contains activated carbon on which at least iodine and iodine oxoacid or iodine oxide are adhered, preferably iodine, iodine oxoacid or iodine oxide, and inorganic It contains activated carbon with acid attached. Here, the “attachment” in the present invention includes the meaning of “attachment” simply attached to the surface of the activated carbon and “adsorption” attached to the fine pores of the activated carbon.

活性炭としては、ヤシ殻活性炭、石炭系造粒活性炭など、一般的な活性炭を用いることができる。その形状は、通常、粒状(粉砕状、円柱状、球状など)または粉状である。
本発明におけるヨウ素は、ヨウ素分子(I2 )を指す。また、ヨウ素のオキソ酸またはヨウ素の酸化物は、ヨウ素酸(HIO3 )、過ヨウ素酸(HIO4 )、五酸化二ヨウ素(I25)などである。
As the activated carbon, general activated carbon such as coconut shell activated carbon and coal-based granulated activated carbon can be used. The shape is usually granular (pulverized, cylindrical, spherical, etc.) or powder.
Iodine in the present invention refers to iodine molecule (I 2 ). Examples of iodine oxo acids or iodine oxides include iodic acid (HIO 3 ), periodic acid (HIO 4 ), and diiodine pentoxide (I 2 O 5 ).

無機酸としては、塩酸(HCl)、硫酸(H2SO4)、硝酸(HNO3 )、リン酸(H3PO4)などを用いることができる。中でも、塩酸または硫酸が好ましく、特に、安定性、安全性を考慮し、揮発性の低い硫酸が好適に用いられる。 As the inorganic acid, hydrochloric acid (HCl), sulfuric acid (H 2 SO 4 ), nitric acid (HNO 3 ), phosphoric acid (H 3 PO 4 ), or the like can be used. Among them, hydrochloric acid or sulfuric acid is preferable, and sulfuric acid having low volatility is preferably used in consideration of stability and safety.

活性炭へのヨウ素の付着量(吸着量)は、脱臭剤に求められる脱臭能力等に応じて適宜設定すればよく、特に限定されないが、好ましくは、活性炭100質量部に対して0.1〜10質量部の範囲である。ヨウ素の付着量が少なすぎると、硫化水素などの酸性物質の除去が不十分となるおそれがあり、ヨウ素の付着量が多すぎると、脱臭剤の製造コストがかさむ。   The adhesion amount (adsorption amount) of iodine to the activated carbon may be appropriately set according to the deodorizing ability and the like required for the deodorizer, and is not particularly limited, but is preferably 0.1 to 10 with respect to 100 parts by mass of the activated carbon. It is the range of mass parts. If the amount of iodine deposited is too small, removal of acidic substances such as hydrogen sulfide may be insufficient, and if the amount of iodine deposited is too large, the production cost of the deodorant increases.

活性炭へのヨウ素のオキソ酸またはヨウ素の酸化物の付着量(添着量)は、脱臭剤に求められる脱臭能力等に応じて適宜設定すればよく、特に限定されないが、好ましくは、活性炭100質量部に対して0.5〜10質量部の範囲である。ヨウ素のオキソ酸またはヨウ素の酸化物の付着量が少なすぎると、硫化メチルなどの中性物質の除去が不十分となるおそれがあり、ヨウ素酸の付着量が多すぎると、脱臭剤の製造コストがかさむ。   The adhesion amount (attachment amount) of iodine oxo acid or iodine oxide to activated carbon may be appropriately set according to the deodorizing ability and the like required for the deodorizing agent, and is not particularly limited, but preferably 100 parts by mass of activated carbon It is the range of 0.5-10 mass parts with respect to. If the amount of iodine oxoacid or iodine oxide attached is too small, neutral substances such as methyl sulfide may be removed insufficiently. If the amount of iodine acid attached is too large, the production cost of the deodorant will be reduced. It's tedious.

活性炭への無機酸の付着量(添着量)は、脱臭剤に求められる脱臭能力等に応じて適宜設定すればよく、特に限定されないが、好ましくは、活性炭100質量部に対して0.05〜0.5当量部の範囲である。無機酸の付着量が少なすぎると、アンモニアなどのアルカリ性物質の除去が不十分となるおそれがあり、無機酸の付着量が多すぎると、活性炭表面の微細孔が塞がれ、性能面に問題が生じるおそれがある。   The adhesion amount (attachment amount) of the inorganic acid to the activated carbon may be appropriately set according to the deodorizing ability and the like required for the deodorizer, and is not particularly limited, but preferably 0.05 to 100 parts by mass of the activated carbon. It is the range of 0.5 equivalent part. If the amount of inorganic acid attached is too small, removal of alkaline substances such as ammonia may be insufficient, and if the amount of inorganic acid attached is too large, fine pores on the activated carbon surface will be blocked, causing problems in performance. May occur.

<脱臭剤の製造方法>
本発明の脱臭剤は、例えば、まず、活性炭にヨウ素を吸着させ、ついで、ヨウ素が吸着した活性炭にヨウ素のオキソ酸またはヨウ素の酸化物を付着させることにより製造することができる。以下、図1のフローシートを参照しながら脱臭剤の製造方法を説明する。なお、ここではヨウ素のオキソ酸またはヨウ素の酸化物がヨウ素酸である例を示す。
<Method for producing deodorant>
The deodorizer of the present invention can be produced, for example, by first adsorbing iodine on activated carbon and then attaching iodine oxo acid or iodine oxide to activated carbon on which iodine is adsorbed. Hereinafter, the manufacturing method of a deodorizer is demonstrated, referring the flow sheet of FIG. Here, an example in which the oxo acid of iodine or the oxide of iodine is iodic acid is shown.

活性炭へのヨウ素の吸着は、例えば、以下のようにして行われる。
まず、ヨウ素昇華装置内のヨウ素溶解槽に固体ヨウ素を入れ、ヨウ素溶解槽内でヨウ素を加熱しながら、これに熱風発生装置から熱風を送り込み、ヨウ素を昇華させる。昇華したヨウ素を、熱風とともに、ミキサーなどで攪拌されている活性炭に吹き込み、活性炭にヨウ素を吸着させる。
ここで、ヨウ素溶解槽内でのヨウ素の加熱温度は、例えば、120〜180℃とし、熱風温度は、例えば、150〜250℃とする。
The adsorption of iodine on the activated carbon is performed, for example, as follows.
First, solid iodine is put into an iodine dissolution tank in the iodine sublimation apparatus, and while heating iodine in the iodine dissolution tank, hot air is sent from the hot air generation apparatus to sublimate the iodine. The sublimated iodine is blown into the activated carbon stirred with a mixer or the like together with hot air, and the activated carbon is adsorbed with iodine.
Here, the heating temperature of iodine in the iodine dissolution tank is, for example, 120 to 180 ° C., and the hot air temperature is, for example, 150 to 250 ° C.

ヨウ素が吸着した活性炭にヨウ素酸を付着させる方法としては、例えば、ヨウ素が吸着した活性炭をミキサーなどで攪拌しながら、ヨウ素が吸着した活性炭にヨウ素酸水溶液をスプレー装置で吹き付け、添着させる方法(スプレー法)が挙げられる。別の方法としては、ヨウ素が吸着した活性炭を、ヨウ素酸水溶液に浸漬する方法(浸漬法)が挙げられる。ただし、浸漬法では、後に乾燥工程が必要となるので、乾燥工程を省略できるスプレー法が好ましい。   As a method of attaching iodic acid to activated carbon on which iodine has been adsorbed, for example, a method of spraying and attaching an iodic acid aqueous solution to activated carbon on which iodine has been adsorbed with a spray device while stirring the activated carbon on which iodine has been adsorbed (spray) Law). As another method, a method (immersion method) in which activated carbon adsorbed with iodine is immersed in an iodic acid aqueous solution can be mentioned. However, since the dipping method requires a drying step later, a spray method that can omit the drying step is preferable.

また、さらに無機酸を活性炭に付着させる場合は、例えば、まず、活性炭にヨウ素を吸着させ、ついで、ヨウ素が吸着した活性炭にヨウ素酸および無機酸を付着させることにより製造することができる。   Further, in the case of further attaching an inorganic acid to activated carbon, for example, it can be produced by first adsorbing iodine to activated carbon and then attaching iodic acid and inorganic acid to activated carbon on which iodine is adsorbed.

ヨウ素が吸着した活性炭にヨウ素酸および無機酸を付着させる方法としては、例えば、ヨウ素が吸着した活性炭をミキサーなどで攪拌しながら、ヨウ素が吸着した活性炭にヨウ素酸および無機酸の混合水溶液をスプレー装置で吹き付け、添着させる方法(スプレー法)が挙げられる。別の方法としては、ヨウ素が吸着した活性炭を、ヨウ素酸および無機酸の混合水溶液に浸漬する方法(浸漬法)が挙げられる。ただし、浸漬法では、後に乾燥工程が必要となるので、乾燥工程を省略できるスプレー法が好ましい。   As a method of attaching iodic acid and inorganic acid to the activated carbon on which iodine is adsorbed, for example, while stirring the activated carbon on which iodine is adsorbed with a mixer or the like, a spray device of a mixed aqueous solution of iodic acid and inorganic acid on the activated carbon on which iodine is adsorbed And a method of spraying and attaching (spray method). As another method, a method (immersion method) in which activated carbon adsorbed with iodine is immersed in a mixed aqueous solution of iodic acid and inorganic acid can be mentioned. However, since the dipping method requires a drying step later, a spray method that can omit the drying step is preferable.

なお、本発明の脱臭剤は、まず、活性炭にヨウ素酸(および無機酸)を付着させ、ついでヨウ素酸が付着した活性炭にヨウ素を吸着させることによっても製造することができるが、ヨウ素を吸着させる前に活性炭を十分に乾燥させる必要がある、ヨウ素の吸着効率が落ちるなどの製造上の問題がある。よって、製造の容易性の観点から、本発明の脱臭剤は、まず、活性炭にヨウ素を吸着させ、ついで、ヨウ素が吸着した活性炭にヨウ素酸(および無機酸)を付着させることにより製造することが好ましい。   The deodorizer of the present invention can be produced by first attaching iodic acid (and inorganic acid) to activated carbon, and then adsorbing iodine to activated carbon to which iodic acid is attached. There are manufacturing problems such as the need to sufficiently dry the activated carbon before, and the adsorption efficiency of iodine decreases. Therefore, from the viewpoint of ease of production, the deodorizer of the present invention can be produced by first adsorbing iodine on activated carbon and then attaching iodic acid (and inorganic acid) to activated carbon on which iodine is adsorbed. preferable.

<脱臭装置>
次に、本発明の脱臭剤を用いた脱臭装置について説明する。
図2は、本発明の脱臭装置の一例を示す断面図であり、この脱臭装置20は、脱臭剤21が充填された複数の脱臭剤カートリッジ22(脱臭部)と、該脱臭剤カートリッジ22を収納する筐体23と、筐体23内で脱臭剤カートリッジ22を支持、固定する支持板24とを具備して概略構成されるものであり、前記筐体23には、下部に臭気ガス入口25が設けられ、上部に処理ガス出口26が設けられている。
<Deodorization device>
Next, a deodorizing apparatus using the deodorizing agent of the present invention will be described.
FIG. 2 is a cross-sectional view showing an example of the deodorizing apparatus of the present invention. The deodorizing apparatus 20 houses a plurality of deodorant cartridges 22 (deodorizing units) filled with a deodorizing agent 21 and the deodorizing cartridges 22. And a support plate 24 that supports and fixes the deodorant cartridge 22 in the housing 23. The housing 23 has an odor gas inlet 25 at the bottom. A processing gas outlet 26 is provided at the top.

また、図3は、本発明の脱臭装置の他の例を示す断面図であり、この脱臭装置30は、下部に臭気ガス入口25が設けられ、上部に処理ガス出口26が設けられ筐体23と、筐体23内を上下に仕切る多孔板31と、筐体23内の多孔板31上に直接充填された脱臭剤21からなる充填層32(脱臭部)とを具備して概略構成されるものである。   FIG. 3 is a cross-sectional view showing another example of the deodorizing apparatus of the present invention. The deodorizing apparatus 30 is provided with an odor gas inlet 25 at the lower part and a processing gas outlet 26 at the upper part, and a housing 23. And a porous plate 31 that divides the inside of the housing 23 up and down, and a filling layer 32 (deodorizing part) made of the deodorizing agent 21 that is directly filled on the porous plate 31 in the housing 23. Is.

<作用>
脱臭装置内に充填された脱臭剤による臭気ガスの脱臭は、以下のような反応機構で行われる。なお、ここではヨウ素を吸着させた活性炭にヨウ素酸および硫酸を付着させて製造された脱臭剤の例を示す。
<Action>
The deodorization of the odor gas by the deodorizer filled in the deodorizer is performed by the following reaction mechanism. Here, an example of a deodorizer produced by attaching iodic acid and sulfuric acid to activated carbon adsorbed with iodine is shown.

(臭気ガス入口側付近)
従来の脱臭剤、例えば、活性炭にヨウ素酸のみが付着し、ヨウ素が付着していない脱臭剤の場合、ヨウ素酸と、臭気ガス中の硫化水素などの酸性物質とが反応し、ヨウ素酸が急激に消耗される。これは、ヨウ素酸のような酸化剤は、還元性の強い硫化水素などと反応しやすいためである。
3 H2S + HIO3 → HI + 3 S + 3 H2O (I−1)
2S + HIO3 → H2SO3 + HI (I−2)
これに対し、本発明の脱臭剤においては、ヨウ素と硫化水素とが反応し、ヨウ素が酸化触媒として機能するように調整されている。この反応が起こることで、硫化メチルなどの中性物質の酸化剤であるヨウ素酸が硫化水素により消耗される上記式(I−1)、(I−2)の反応を防止する。
(Near odor gas inlet side)
In the case of a conventional deodorizing agent, for example, a deodorizing agent in which only iodic acid is attached to activated carbon and no iodine is attached, iodic acid reacts with acidic substances such as hydrogen sulfide in odor gas, and iodic acid is rapidly Is consumed. This is because an oxidizing agent such as iodic acid tends to react with hydrogen sulfide having a strong reducing property.
3 H 2 S + HIO 3 → HI + 3 S + 3 H 2 O (I-1)
H 2 S + HIO 3 → H 2 SO 3 + HI (I-2)
On the other hand, in the deodorizer of this invention, it adjusts so that iodine and hydrogen sulfide react and iodine functions as an oxidation catalyst. When this reaction occurs, the reaction of the above formulas (I-1) and (I-2) in which iodic acid, which is an oxidizing agent of a neutral substance such as methyl sulfide, is consumed by hydrogen sulfide is prevented.

図4の脱臭剤カートリッジ22に示す臭気ガス入口側付近41の脱臭剤21においては、活性炭にあらかじめ吸着しているヨウ素が、硫化水素などの酸化触媒として働き、硫化水素などの酸性物質の酸化が引き続き行われ、硫化メチルなどの中性物質の酸化剤であるヨウ素酸が硫化水素により消耗されるのを防止するバリアとして機能する。
2S + I2 → 2 HI + S (II−1−a)
2 HI + 1/2 O2 → I2 + H2O (II−1−b)
2S + 3 I2 + 3 H2O → H2SO3 + 6 HI (II−2−a)
2SO3 + 1/2 O2 → H2SO4 (II−2−b)
ここで生成する硫酸(H2SO4 )は、後述のアルカリ性物質の中和に用いられ、ヨウ素(I2 )は、引き続き硫化水素などの酸性物質の酸化触媒として用いられる。
In the deodorizer 21 near the odor gas inlet side 41 shown in the deodorizer cartridge 22 of FIG. 4, iodine previously adsorbed on the activated carbon acts as an oxidation catalyst such as hydrogen sulfide, and oxidation of acidic substances such as hydrogen sulfide is performed. Subsequently, it functions as a barrier that prevents iodic acid, which is an oxidizing agent for neutral substances such as methyl sulfide, from being consumed by hydrogen sulfide.
H 2 S + I 2 → 2 HI + S (II-1-a)
2 HI +1/2 O 2 → I 2 + H 2 O (II-1-b)
H 2 S + 3 I 2 + 3 H 2 O → H 2 SO 3 + 6 HI (II-2-a)
H 2 SO 3 +1/2 O 2 → H 2 SO 4 (II-2-b)
The sulfuric acid (H 2 SO 4 ) produced here is used for neutralization of an alkaline substance described later, and iodine (I 2 ) is subsequently used as an oxidation catalyst for acidic substances such as hydrogen sulfide.

ここで、上記式(II−2−a)の詳細な反応機構は以下のようになる。
まず、ヨウ素と臭気ガス中の水蒸気や活性炭に吸着されている水分とが反応し、次亜ヨウ素酸(HIO)が生成する。
3 I2 + 3 H2O → 3 HI + 3 HIO (II−2−a1)
次亜ヨウ素酸は不安定であり、直ちに分解されて活性の高い酸素が生成する。
3 HIO → 3 HI + 3O (II−2−a2)
この酸素が硫化水素を酸化する。
2S + 3 O → H2SO3 (II−2−a3)
Here, the detailed reaction mechanism of the above formula (II-2-a) is as follows.
First, iodine reacts with water vapor adsorbed by water vapor or activated carbon in odor gas, and hypoiodous acid (HIO) is generated.
3 I 2 + 3 H 2 O → 3 HI + 3 HIO (II-2-a1)
Hypoiodous acid is unstable and immediately decomposes to produce highly active oxygen.
3 HIO → 3 HI + 3O (II-2-a2)
This oxygen oxidizes hydrogen sulfide.
H 2 S + 3O → H 2 SO 3 (II-2-a3)

また、臭気ガス入口側付近41の脱臭剤21においては、活性炭にあらかじめ付着している硫酸、およびヨウ素による硫化水素の酸化で生成した硫酸が、アンモニアなどのアルカリ性物質と反応する。
2 NH3 + H2SO4 → (NH42SO4 (III)
In addition, in the deodorizer 21 near the odor gas inlet side 41, sulfuric acid previously attached to the activated carbon and sulfuric acid generated by oxidation of hydrogen sulfide with iodine react with an alkaline substance such as ammonia.
2 NH 3 + H 2 SO 4 → (NH 4 ) 2 SO 4 (III)

なお、臭気ガス入口側付近41の脱臭剤21において、ヨウ素は、硫化メチルなどの中性物質の酸化触媒としても働く。
(CH32S + I2 + H2O → (CH32SO + 2 HI (IV−1)
2 HI + 1/2 O2 → I2 + H2O (IV−2)
しかしながら、硫化メチルなどの中性物質の酸化反応は、還元性の強い硫化水素などの酸性物質の酸化反応に比べ、進みにくい。したがって、臭気ガス入口側付近41の脱臭剤21においては、主に、ヨウ素による硫化水素などの酸性物質の酸化、および硫酸によるアンモニアなどのアルカリ性物質の中和が行われる。
In the deodorizer 21 near the odor gas inlet side 41, iodine also functions as an oxidation catalyst for neutral substances such as methyl sulfide.
(CH 3 ) 2 S + I 2 + H 2 O → (CH 3 ) 2 SO + 2 HI (IV-1)
2 HI + 1/2 O 2 → I 2 + H 2 O (IV-2)
However, the oxidation reaction of neutral substances such as methyl sulfide is difficult to proceed as compared with the oxidation reaction of acidic substances such as hydrogen sulfide, which is highly reducible. Therefore, in the deodorizer 21 near the odor gas inlet side 41, oxidation of acidic substances such as hydrogen sulfide by iodine and neutralization of alkaline substances such as ammonia by sulfuric acid are mainly performed.

(下流側)
このように臭気ガス入口側付近41の脱臭剤21が硫化水素などの酸性物質の酸化触媒として機能することによって、臭気ガス入口側付近41よりも下流側42に流れる臭気ガス中の硫化水素は、ほとんど除去される。よって、下流側42の脱臭剤21に付着しているヨウ素酸は、硫化水素によって消耗されることなく、その多くが本来の目的である硫化メチルなどの中性物質の酸化剤として働くこととなる。
3 (CH32S + HIO3 → 3 (CH32SO + HI (V−1)
2 HI + 1/2 O2 → I2 + H2O (V−2)
(Downstream side)
As described above, the deodorizer 21 near the odor gas inlet side 41 functions as an oxidation catalyst for acidic substances such as hydrogen sulfide, so that hydrogen sulfide in the odor gas flowing to the downstream side 42 from the vicinity 41 near the odor gas inlet side is Almost eliminated. Therefore, the iodic acid adhering to the deodorizer 21 on the downstream side 42 is not consumed by hydrogen sulfide, but most of it functions as an oxidizing agent for neutral substances such as methyl sulfide, which is the original purpose. .
3 (CH 3 ) 2 S + HIO 3 → 3 (CH 3 ) 2 SO + HI (V-1)
2 HI + 1/2 O 2 → I 2 + H 2 O (V-2)

下流側42においても、活性炭にあらかじめ吸着しているヨウ素が、硫化水素などの酸性物質や硫化メチルなどの中性物質の酸化触媒として働き、また、活性炭にあらかじめ付着している硫酸が、アンモニアなどのアルカリ性物質と反応することは無論である。しかしながら、下流側42に流れる臭気ガス中の硫化水素、アンモニアの濃度が低く、また、ヨウ素による硫化メチルなどの中性物質の酸化反応が進みにくいことから、下流側42の脱臭剤21においては、主に、ヨウ素酸による硫化メチルなどの中性物質の酸化が行われる。   Also on the downstream side 42, iodine previously adsorbed on the activated carbon acts as an oxidation catalyst for acidic substances such as hydrogen sulfide and neutral substances such as methyl sulfide, and sulfuric acid previously attached to the activated carbon is ammonia or the like. Of course, it reacts with other alkaline substances. However, since the concentration of hydrogen sulfide and ammonia in the odor gas flowing to the downstream side 42 is low and the oxidation reaction of neutral substances such as methyl sulfide by iodine is difficult to proceed, in the deodorizer 21 on the downstream side 42, Oxidation of neutral substances such as methyl sulfide is mainly performed with iodic acid.

以上のように、本発明の脱臭剤を用いることによって、1種類の脱臭剤で、硫化水素などの酸性の悪臭の原因物質、硫化メチルなどの中性の悪臭の原因物質に対応できるようになる。しかも、硫化水素によるヨウ素酸の消耗を必要最小限に抑えることができるので、優れた脱臭効果を長期間維持できる。   As described above, by using the deodorizing agent of the present invention, one kind of deodorizing agent can cope with an acidic odor-causing substance such as hydrogen sulfide and a neutral odor-causing substance such as methyl sulfide. . In addition, since the consumption of iodic acid due to hydrogen sulfide can be minimized, an excellent deodorizing effect can be maintained for a long time.

また、硫酸などの無機酸を活性炭に付着させることによって、アンモニアなどのアルカリ性の悪臭の原因物質にも対応できる。なお、ヨウ素酸による硫化水素の酸化で硫酸が生成するので、無機酸が活性炭にあらかじめ付着していなくても、ある程度はアンモニアなどのアルカリ性の悪臭の原因物質にも対応できる。しかしながら、確実にアンモニアなどのアルカリ性物質を中和するためには、硫酸が活性炭にあらかじめ付着していることが好ましい。   In addition, by attaching an inorganic acid such as sulfuric acid to the activated carbon, it is possible to cope with an alkaline odor-causing substance such as ammonia. In addition, since sulfuric acid is generated by oxidation of hydrogen sulfide with iodic acid, even if an inorganic acid is not attached to the activated carbon in advance, it can cope with alkaline caustic substances such as ammonia to some extent. However, in order to reliably neutralize alkaline substances such as ammonia, it is preferable that sulfuric acid is previously attached to the activated carbon.

また、本発明の脱臭剤を用いた脱臭装置にあっては、必要な脱臭剤が1種類のみであるので、脱臭装置の構造を単純にすることができ、維持管理に手間がかからない   In addition, in the deodorizing apparatus using the deodorizing agent of the present invention, since only one type of deodorizing agent is necessary, the structure of the deodorizing apparatus can be simplified, and maintenance is not time-consuming.

以下、実施例を示す。
[実施例1]
(脱臭剤の製造)
ヨウ素昇華装置内のヨウ素溶解槽に固体ヨウ素6.5gを入れ、ヨウ素溶解槽内でヨウ素を150℃で加熱した。圧縮空気を熱風発生装置に送り、ここで圧縮空気を180℃に加熱し、この熱風をヨウ素溶解槽内のヨウ素に送り込み、ヨウ素を昇華させた。昇華したヨウ素を、熱風とともにミキサーに送り込み、ミキサー内で攪拌されているヤシ殻活性炭500gにヨウ素を吸着させた。このとき活性炭へのヨウ素の吸着量は、活性炭100質量部に対して、1.3質量部であった。
Examples are shown below.
[Example 1]
(Manufacture of deodorant)
Solid iodine 6.5g was put into the iodine dissolution tank in an iodine sublimation apparatus, and the iodine was heated at 150 degreeC in the iodine dissolution tank. Compressed air was sent to a hot air generator, where the compressed air was heated to 180 ° C., and this hot air was sent to iodine in the iodine dissolution tank to sublimate iodine. The sublimated iodine was fed into a mixer together with hot air, and iodine was adsorbed on 500 g of coconut shell activated carbon that was stirred in the mixer. At this time, the adsorption amount of iodine to the activated carbon was 1.3 parts by mass with respect to 100 parts by mass of the activated carbon.

ついで、ヨウ素が吸着した活性炭をミキサー内で引き続き攪拌しながら、ヨウ素が吸着した活性炭に、34質量%ヨウ素酸水溶液55gおよび75質量%硫酸水溶液60gの混合液を、スプレー装置で吹き付け、ヨウ素酸および硫酸を添着させた。このとき活性炭への100%換算のヨウ素酸の添着量は、活性炭100質量部に対して、3.74質量部であり、活性炭への100%換算の硫酸の添着量は、活性炭100質量部に対して、9質量部であった。
得られた脱臭剤は、乾燥することなく、そのまま袋詰めした。
Next, while the activated carbon on which iodine was adsorbed was continuously stirred in a mixer, a mixed solution of 34 g of a 34% by mass iodic acid aqueous solution and 60 g of a 75% by mass sulfuric acid aqueous solution was sprayed onto the activated carbon adsorbed with iodine using a spray device. Sulfuric acid was impregnated. At this time, the amount of 100% equivalent iodic acid added to the activated carbon is 3.74 parts by mass with respect to 100 parts by mass of the activated carbon, and the amount of 100% equivalent sulfuric acid added to the activated carbon is 100 parts by mass of the activated carbon. In contrast, it was 9 parts by mass.
The obtained deodorizer was packed in a bag without drying.

(平衡吸着量の測定)
得られた脱臭剤について、平衡吸着量測定装置を用い、表1に示す測定条件にて、硫化水素、アンモニアおよび硫化メチルの平衡吸着量を測定した。測定結果を表2に示す。
(Measurement of equilibrium adsorption amount)
About the obtained deodorizer, the equilibrium adsorption amount of hydrogen sulfide, ammonia, and methyl sulfide was measured on the measurement conditions shown in Table 1 using the equilibrium adsorption amount measuring apparatus. The measurement results are shown in Table 2.

[比較例1]
ヨウ素の吸着を行わない以外は、実施例1と同様にして脱臭剤を得た。得られた脱臭剤について、実施例1と同様にして、硫化水素、アンモニアおよび硫化メチルの平衡吸着量を測定した。測定結果を表2に示す。
[Comparative Example 1]
A deodorizer was obtained in the same manner as in Example 1 except that iodine was not adsorbed. About the obtained deodorizing agent, it carried out similarly to Example 1, and measured the equilibrium adsorption amount of hydrogen sulfide, ammonia, and methyl sulfide. The measurement results are shown in Table 2.

[比較例2]
原料のヤシ殻活性炭そのものについて、実施例1と同様にして、硫化水素、アンモニアおよび硫化メチルの平衡吸着量を測定した。測定結果を表2に示す。
[Comparative Example 2]
About the raw material coconut shell activated carbon itself, the equilibrium adsorption amount of hydrogen sulfide, ammonia and methyl sulfide was measured in the same manner as in Example 1. The measurement results are shown in Table 2.

Figure 2005199256
Figure 2005199256

Figure 2005199256
Figure 2005199256

本発明の脱臭剤を用いることによって、1種類の脱臭剤で、硫化水素などの酸性の悪臭の原因物質、硫化メチルなどの中性の悪臭の原因物質、およびアンモニアなどのアルカリ性の悪臭の原因物質に対応でき、しかも、優れた脱臭効果を長期間維持できる。
これにより、脱臭装置の構造を単純化することができ、しかもその維持管理に手間がかからない。
By using the deodorizing agent of the present invention, a single type of deodorizing agent, a substance causing acidic malodor such as hydrogen sulfide, a substance causing neutral malodor such as methyl sulfide, and a substance causing alkaline malodor such as ammonia In addition, an excellent deodorizing effect can be maintained for a long time.
As a result, the structure of the deodorizing apparatus can be simplified, and the maintenance is not time-consuming.

本発明の脱臭剤の製造方法の一例を示すフローシートである。It is a flow sheet which shows an example of the manufacturing method of the deodorizer of the present invention. 本発明の脱臭装置の一例を示す断面図である。It is sectional drawing which shows an example of the deodorizing apparatus of this invention. 本発明の脱臭装置の他の例を示す断面図である。It is sectional drawing which shows the other example of the deodorizing apparatus of this invention. 図2の脱臭装置における脱臭剤カートリッジの断面図である。It is sectional drawing of the deodorizing agent cartridge in the deodorizing apparatus of FIG. 従来の脱臭装置の一例を示す断面図である。It is sectional drawing which shows an example of the conventional deodorizing apparatus.

符号の説明Explanation of symbols

20 脱臭装置
21 脱臭剤
22 脱臭剤カートリッジ(脱臭部)
30 脱臭装置
32 充填層(脱臭部)
20 Deodorizer 21 Deodorizer 22 Deodorizer Cartridge (Deodorizer)
30 Deodorizing device 32 Packing layer (deodorizing part)

Claims (7)

ヨウ素と、ヨウ素のオキソ酸またはヨウ素の酸化物とが付着した活性炭を含有することを特徴とする脱臭剤。   A deodorizer comprising activated carbon on which iodine and an oxo acid of iodine or an oxide of iodine are attached. 前記活性炭に、さらに無機酸が付着していることを特徴とする請求項1記載の脱臭剤。   The deodorizer according to claim 1, wherein an inorganic acid is further attached to the activated carbon. 前記無機酸が、塩酸であることを特徴とする請求項2記載の脱臭剤。   The deodorizer according to claim 2, wherein the inorganic acid is hydrochloric acid. 前記無機酸が、硫酸であることを特徴とする請求項2記載の脱臭剤。   The deodorizer according to claim 2, wherein the inorganic acid is sulfuric acid. 活性炭にヨウ素を付着させた後、さらにヨウ素のオキソ酸またはヨウ素の酸化物を付着させることを特徴とする脱臭剤の製造方法。   A method for producing a deodorizing agent, comprising attaching iodine to activated carbon, and further attaching an oxo acid of iodine or an oxide of iodine. 活性炭にヨウ素を付着させた後、さらにヨウ素のオキソ酸またはヨウ素の酸化物、および無機酸を付着させることを特徴とする脱臭剤の製造方法。   A method for producing a deodorant, characterized in that iodine is attached to activated carbon, and then an oxo acid or iodine oxide of iodine and an inorganic acid are further attached. 請求項1ないし4いずれか一項に記載の脱臭剤が充填された脱臭部を具備することを特徴とする脱臭装置。
A deodorizing device comprising a deodorizing section filled with the deodorizing agent according to any one of claims 1 to 4.
JP2004137328A 2003-12-17 2004-05-06 Deodorant, method for producing the same, and deodorizer Expired - Lifetime JP4639276B2 (en)

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JP2016150042A (en) * 2015-02-16 2016-08-22 株式会社キャタラー Iodine carrying composition, deodorant prepared with the composition and method for producing the same, and deodorization method using the same
JP2021020159A (en) * 2019-07-26 2021-02-18 株式会社化研 Porous body containing iodine-supporting active carbon, and production method thereof

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JPS6071040A (en) * 1983-09-27 1985-04-22 Takeda Chem Ind Ltd Noxious gas adsorbent
JPH06369A (en) * 1991-07-22 1994-01-11 Takeda Chem Ind Ltd Active carbon honeycomb and its utilization
JP2001276198A (en) * 2000-03-28 2001-10-09 Kurita Water Ind Ltd Deodorant
JP2002200424A (en) * 2000-12-28 2002-07-16 Nkk Corp Deodorizer and its manufacturing method
JP2003164510A (en) * 2001-11-30 2003-06-10 Koyo Hightech:Kk Deodorant and method of preparing the same

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JPS6071040A (en) * 1983-09-27 1985-04-22 Takeda Chem Ind Ltd Noxious gas adsorbent
JPH06369A (en) * 1991-07-22 1994-01-11 Takeda Chem Ind Ltd Active carbon honeycomb and its utilization
JP2001276198A (en) * 2000-03-28 2001-10-09 Kurita Water Ind Ltd Deodorant
JP2002200424A (en) * 2000-12-28 2002-07-16 Nkk Corp Deodorizer and its manufacturing method
JP2003164510A (en) * 2001-11-30 2003-06-10 Koyo Hightech:Kk Deodorant and method of preparing the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016150042A (en) * 2015-02-16 2016-08-22 株式会社キャタラー Iodine carrying composition, deodorant prepared with the composition and method for producing the same, and deodorization method using the same
JP2021020159A (en) * 2019-07-26 2021-02-18 株式会社化研 Porous body containing iodine-supporting active carbon, and production method thereof
JP7161659B2 (en) 2019-07-26 2022-10-27 株式会社ヨードラボ Porous material containing iodine-supporting activated carbon and method for producing the same

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