JP3772058B2 - Method for producing porous deodorizing material - Google Patents

Method for producing porous deodorizing material Download PDF

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Publication number
JP3772058B2
JP3772058B2 JP26646399A JP26646399A JP3772058B2 JP 3772058 B2 JP3772058 B2 JP 3772058B2 JP 26646399 A JP26646399 A JP 26646399A JP 26646399 A JP26646399 A JP 26646399A JP 3772058 B2 JP3772058 B2 JP 3772058B2
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Prior art keywords
deodorizing
emulsion
aniline
hydrophobic
surfactant
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JP2001087364A (en
Inventor
聡士 熊谷
達郎 中村
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Japan Vilene Co Ltd
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Japan Vilene Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、臭気物質を効果的に吸着除去するため、活性炭、ゼオライトなどの多孔質担体に種々の脱臭成分を添着する技術、特に疎水性が高い脱臭成分に適用して好適な添着技術に関する。
【0002】
【従来の技術】
従来、様々な臭気物質を吸着除去するため、様々な多孔質担体が利用されており、中でも比較的特異性の低い活性炭が広く用いられている。しかし、幾つかの臭気物質に関し、活性炭が持つ物理的な吸着作用のみでは不十分であり、特に低濃度の臭気物質であっても吸着除去可能とするため、活性炭に化学的な脱臭成分を添着した、所謂、添着炭に関わる技術が種々提案されている。
【0003】
その一例として、特開昭56−53744号公報(以下、文献1)では、活性炭単体で吸着除去効果に乏しい臭気物質としてホルムアルデヒド、アセトアルデヒドといった脂肪族アルデヒドを挙げ、脱臭成分としてアニリンを添着する技術について開示されている。この公報には、活性炭へのアニリン添着技術として、
(方法1)活性炭をアニリン水溶液中に浸漬後、濾別・乾燥する(水浸漬法)
(方法2)アニリンを含むキャリアーガスを活性炭に接触させる気相吸着法
(方法3)アニリンを活性炭に直接散布するふりかけ法
(方法4)アニリンと活性炭を密閉容器に入れて、100℃で1〜2時間加熱する平衡化吸着法
が開示されている。
【0004】
また、文献1と同様に脂肪族アルデヒドを除去対象とする添着炭として、特開平1−288336号公報(以下、文献2)にはトルイジン及び/又はフェニレンジアミン(何れもo-,m-,p-の異性体を含む)を脱臭成分とする技術が開示されている。この文献2で採用される添着方法は、文献1に開示される(方法1)〜(方法4)に加えて、例えばメタノール或いは水とメタノールとの混合溶媒に上記脱臭成分を溶解させた溶媒浸漬法が記載されている。
【0005】
【発明が解決しようとする課題】
上述した従来の添着技術では、気体状若しくは液体状の脱臭成分を単体で活性炭と接触させる方法と、脱臭成分を含む溶液に活性炭を浸漬する方法とに大別される。このような添着炭の製造技術は、その他種々の多孔質担体に応用可能であるが、脱臭成分単体を、直接、接触添着させる方法は、アニリンのように脱臭成分自体が臭気を有する場合には生産設備に気密性を必要とすることから、安全性に配慮して生産コストが高くなってしまうという問題点がある。
【0006】
また、脱臭成分を含む水溶液に活性炭を浸漬する方法の場合には、通常、2〜3時間に渡って活性炭を充分量の水溶液に浸漬し、脱臭成分が吸着平衡に達した後、脱臭物質が吸着した活性炭のみを濾別・乾燥する必要があり、添着炭の生産に長時間を要するという問題点が有った。さらに、アニリンやトルイジンのように、水に対して5mass%未満程度しか溶解しない疎水性の脱臭成分(アニリンの溶解度:20℃の水100mlに対して3.4ml)の場合、充分な添着量を得るには浸漬乾燥を繰り返す必要がある。この点に対して、前述の文献2に開示されるように、メタノールなどの混合溶媒によって脱臭成分の溶解度を確保する手法も有効であるが、添着炭の乾燥設備等に防爆構造を必要とし、設備コストの低減を図ることが難しいという問題が有った。
【0007】
この出願に係る発明者は、上述した従来の問題点、特に、簡易な製造設備で実施可能な浸漬法の利点を有し、しかも、脱臭成分を直接添着する技術と同様に添着に要する時間の短縮を図るべく鋭意検討した結果、本発明を完成したものである。従って、この発明の目的は、疎水性脱臭成分を活性炭に添着するに際して、簡易な設備で添着を達成し得る製造方法を実現し、安価で優れた多孔質脱臭材を提供することにある。
【0008】
【課題を解決するための手段】
この目的の達成を図るため、本発明に係る多孔質脱臭材の製造方法によれば、粉粒体の多孔質担体に、疎水性脱臭成分を添着するに当たり、該疎水性脱臭成分及び界面活性剤を水に加え疎水性脱臭成分を乳化分散してなるエマルジョン水溶液を形成し、次いで該エマルジョン水溶液と多孔質担体とを、多孔質担体1容量部に対し、エマルジョン水溶液を0.15容量部以上、0.35容量部以下の浴比で均一混合した後に乾燥することを特徴としている。尚、本発明の「エマルジョン水溶液」とは、液状又は固体状の脱臭成分を界面活性剤の作用により分散・懸濁されたものを包括的に示すものである。
【0009】
【発明の実施の形態】
以下、本発明の好適実施形態について説明する。本発明の方法は、上述した構成を採用することによって、疎水性脱臭成分が乳化分散されたエマルジョン水溶液と多孔質担体とを均一に混合し、付着させるものである。このため、所望の添着量を達成する上で、高濃度の脱臭成分を含む少量のエマルジョン水溶液によって添着を行うことが可能となる。従って、多孔質担体に対するエマルジョン水溶液の浴比を小さく採ることができ、従来の浸漬法で必要であった濾別工程が実質的に不要となる。
【0010】
また、文献2に開示されるようなアルコール等の両親媒性溶剤が不要であり、しかも、脱臭成分自体に臭気が有る場合でも当該成分はエマルジョン状態として抱え込まれていることから臭気低減を図ることができる。従って、設備に気密性や防爆構造を採用することなく、簡易な設備で優れた添着炭を安価に提供することができる。
【0011】
本発明の方法で用いられる疎水性脱臭成分は、例えば常温で水に5mass%未満程度しか溶解しないものであれば、常温で固体状態にあっても用いることができ、特に限定されるものではないが、アニリン、トルイジン、フェニレンジアミン、アミノ安息香酸、アミノフェノール等を用いることができ、特に低級脂肪酸やアルデヒド類に対して脱臭性能が高いアニリンが好適である。
【0012】
また、本発明で使用できる多孔質担体としては、前述の活性炭の他、ゼオライト、シリカゲル、活性アルミナ、或いはセピオライトなどの粘土鉱物からなる粉粒体を挙げることができる。
【0013】
エマルジョン水溶液を構成する界面活性剤としては、脱臭成分が有する電荷に応じて種々に選択することが可能であるが、当該脱臭成分の電荷を阻害することが少ないノニオン性界面活性剤を採用するのが好ましい。また、上述したアニリンを疎水性脱臭成分に採用するに際しては、エマルジョン水溶液調製後の安定性を高めるために、ノニオン性界面活性剤とアニオン性界面活性剤とを併用するのが好適である。
【0014】
さらに、多孔質担体とエマルジョン水溶液との均一混合に際して、多孔質担体1容量部に対し、エマルジョン水溶液は0.15容量部から0.35容量部の範囲内とする。この範囲よりもエマルジョン水溶液の浴比を小さく採ると脱臭成分の均一な添着を図ることが難しくなり、当該浴比を大きくした場合には濾別工程を省略することが難しくなる。
【0015】
【実施例】
以下、本発明の実施例について説明する。この実施例では、多孔質担体として活性炭、並びに疎水性脱臭成分としてアニリンを例示し、種々の条件でエマルジョン水溶液を調製・評価した結果について示す。尚、以下に説明する特定条件は、この発明の理解が容易となる程度に示したものであり、本発明はこれら特定条件にのみ限定されるものではなく、その目的の範囲内で任意好適な設計の変更及び変形を行い得る。
【0016】
実施例1
実施例1として、市販のノニオン性界面活性剤と疎水性脱臭成分との比率を種々に変えてエマルジョン水溶液を調製・評価した結果を示す。始めに、水10重量部に対してアニリン1重量部を加え、『エマルミン70』(三洋化成工業株式会社製;商品名)の添加量を種々に変えてエマルジョン水溶液を調製し、調整後約2分以内での乳化状態を観察した。その結果、アニリンを、その溶解度の約3倍に相当する約9mass%程度分散させるに当たって、界面活性剤の添加量を0.20重量部(約1.8mass%)添加することによって良好な乳化状態を得られた。この好適添加量の半分では界面活性剤添加前と同様にアニリンが油滴として沈降し、当該好適添加量の1.5倍に相当する界面活性剤を添加した場合でも油滴沈降が認められた。
【0017】
実施例2
次いで、実施例2として、上記界面活性剤と同一の主鎖を持ち、エチレンオキサイドの付加モル数を種々に変えた一連のノニオン性界面活性剤で調製したエマルジョン水溶液の状態を実施例1と同様に観察評価した。エマルジョン水溶液の調製に当たっては、水10重量部とアニリン1重量部とに対して、実施例1で求めた好適添加量0.2重量部に統一して各界面活性剤を添加した。その結果を表1に示す。尚、同表中に示す界面活性剤の名称は、何れも三洋化成工業株式会社の商品名である。
【0018】
【表1】

Figure 0003772058
【0019】
この表1に示す通り、エチレンオキサイドの付加モル数を種々に変えて試験した結果、実施例1で良好な結果を示したHLB(Hydrophilic Lipophilic Balance)が10.8である『エマルミン70』を中心として、より親水性の度合いが低いHLBが10.2の『エマルミン60』、及び親水性の度合いが高いHLBが13.2の『エマルミン110』で良好な乳化状態が得られた。この結果から、脱臭成分をアニリンとした場合、主剤となる界面活性剤は10.2から13.2のHLB範囲が好ましいことが理解できる。
【0020】
実施例3
この実施例3では、実施例1及び実施例2により得られた結果から、上記ノニオン性界面活性剤にアニオン性界面活性剤を併用して、約1時間放置後のエマルジョン水溶液の安定性を評価した。この評価では、上記2つの評価試験と同様に水10重量部とアニリン1重量部に界面活性剤を添加するに当たって、これら2種類の界面活性剤の添加量の和を0.2重量部に固定し、これら界面活性剤同士の比を変えてエマルジョン水溶液を調製した。この際、ノニオン性界面活性剤は『エマルミン70』を用いると共に、アニオン性界面活性剤として、ジオクチルスルホコハク酸ナトリウムを主成分とする『サンモリンOT−70』(三洋化成工業株式会社製;商品名)を用いた。その結果を表2に示す。
【0021】
【表2】
Figure 0003772058
【0022】
まず、ノニオン性界面活性剤のみ適用した場合、エマルジョン調製直後の乳化状態は良好であったが、1時間放置後にはアニリンと思われる油滴のみが沈降した。また、ノニオン性界面活性剤:アニオン性界面活性剤の比率を4:1とした場合に最も安定なエマルジョン水溶液を調製することができた。さらにアニオン性界面活性剤の比率を増やしたところ、上記比率を3:2とした際には油滴が浮遊した状態となり、さらに2:3と逆転させた場合には乳化物自体が沈降する結果となった。
【0023】
実施例1〜3の結果から、アニリンをエマルジョン水溶液として乳化調製する場合、ノニオン性並びにアニオン性界面活性剤を所定比率で併用することによって、添着工程として充分な時間に渡ってエマルジョン水溶液を安定化し得ることが明らかとなった。この知見に基づいて、活性炭1容量部に対して、上記好適条件で調製したエマルジョン水溶液0.30容量部とを約30分に渡って均一混合・乾燥することによって、約5mass%のアニリンを含む多孔質脱臭材を得た。これら添着工程ではアニリンの臭気が極めて低く、得られた添着炭によるアルデヒドに対する脱臭性能も良好であった。また、活性炭とエマルジョン水溶液との浴比を0.15未満とした場合には、活性炭全体にエマルジョン水溶液が行き渡らず、添着が不均一となった。さらに、当該浴比を0.35よりも大きくすると、混合後に過剰なエマルジョン水溶液が残り、濾別工程を必要とし、しかも廃液処理を必要とした。
【0024】
【発明の効果】
上述した説明から明らかなように、本発明に係る多孔質脱臭材の製造方法によれば、粉粒体の多孔質担体に、疎水性脱臭成分を添着するに当たり、該疎水性脱臭成分及び界面活性剤を水に加え疎水性脱臭成分を乳化分散してなるエマルジョン水溶液を形成し、次いで該エマルジョン水溶液と多孔質担体とを、多孔質担体1容量部に対し、エマルジョン水溶液を0.15容量部以上、0.35容量部以下の浴比で均一混合した後に乾燥することを特徴としている。このため、添着工程での取扱が容易な水系エマルジョンとして疎水性脱臭成分を分散し、多孔質担体に比較的高濃度で添着させる。従って、多孔質担体に対して比較的少量のエマルジョン水溶液を混合することで所望の添着量を得ることができ、従来行われていた浸漬法のような濾別工程を必要とせず、簡易な設備で短時間のうちに、優れた多孔質脱臭材を効率的に生産することができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a technique for adhering various deodorizing components to a porous carrier such as activated carbon and zeolite in order to effectively adsorb and remove odorous substances, and particularly to an adhering technique suitable for application to deodorizing components having high hydrophobicity.
[0002]
[Prior art]
Conventionally, in order to adsorb and remove various odorous substances, various porous carriers have been used, and among them, activated carbon having relatively low specificity is widely used. However, for some odorous substances, only the physical adsorption action of activated carbon is insufficient, and chemical deodorizing components are attached to activated carbon so that even odorous substances with low concentration can be adsorbed and removed. Various techniques related to so-called impregnated coal have been proposed.
[0003]
As an example, Japanese Patent Application Laid-Open No. 56-53744 (hereinafter referred to as Document 1) discloses a technique in which activated carbon alone includes aliphatic aldehydes such as formaldehyde and acetaldehyde as odor substances having poor adsorption and removal effects, and aniline is added as a deodorizing component. It is disclosed. In this publication, as an aniline attachment technique to activated carbon,
(Method 1) Activated carbon is immersed in an aniline aqueous solution, then filtered and dried (water immersion method)
(Method 2) Gas phase adsorption method in which carrier gas containing aniline is brought into contact with activated carbon (Method 3) Sprinkling method in which aniline is directly sprayed on activated carbon (Method 4) Aniline and activated carbon are placed in a sealed container, and 1 to 100 ° C. An equilibrated adsorption method is disclosed that heats for 2 hours.
[0004]
Further, as in the case of Reference 1, as an addition coal for removing an aliphatic aldehyde, JP-A-1-288336 (hereinafter referred to as Reference 2) describes toluidine and / or phenylenediamine (both o-, m-, p (Including isomers of-) as a deodorizing component. In addition to the (Method 1) to (Method 4) disclosed in Reference 1, the adhering method employed in Reference 2 is, for example, a solvent immersion in which the deodorizing component is dissolved in methanol or a mixed solvent of water and methanol. The law is described.
[0005]
[Problems to be solved by the invention]
The above-described conventional attaching technique is roughly divided into a method of bringing a gaseous or liquid deodorizing component into contact with activated carbon alone and a method of immersing activated carbon in a solution containing the deodorizing component. Such an impregnated coal production technique can be applied to various other porous carriers, but the method of directly contact-adding the deodorized component alone is used when the deodorized component itself has an odor such as aniline. Since the production equipment requires airtightness, there is a problem that the production cost is increased in consideration of safety.
[0006]
In the case of the method of immersing activated carbon in an aqueous solution containing a deodorizing component, the activated carbon is usually immersed in a sufficient amount of aqueous solution for 2-3 hours, and after the deodorizing component reaches adsorption equilibrium, Only the adsorbed activated carbon needs to be filtered and dried, and there is a problem that it takes a long time to produce impregnated coal. Furthermore, in the case of hydrophobic deodorizing components that dissolve only less than 5 mass% in water, such as aniline and toluidine (aniline solubility: 3.4 ml with respect to 100 ml of water at 20 ° C.), a sufficient amount of attachment is obtained. In order to obtain, it is necessary to repeat immersion drying. For this point, as disclosed in the above-mentioned document 2, a method for ensuring the solubility of the deodorizing component with a mixed solvent such as methanol is also effective. There was a problem that it was difficult to reduce the equipment cost.
[0007]
The inventor of this application has the above-mentioned conventional problems, in particular, the advantage of the dipping method that can be carried out with a simple manufacturing facility, and the time required for attachment as well as the technique of directly attaching the deodorizing component. As a result of intensive studies aimed at shortening, the present invention has been completed. Accordingly, an object of the present invention is to provide a low cost and excellent porous deodorizing material by realizing a production method capable of achieving attachment with simple equipment when a hydrophobic deodorizing component is attached to activated carbon.
[0008]
[Means for Solving the Problems]
In order to achieve this object, according to the method for producing a porous deodorizing material according to the present invention, in attaching a hydrophobic deodorizing component to a porous carrier of a granular material, the hydrophobic deodorizing component and a surfactant are added. Is added to water to form an emulsion aqueous solution obtained by emulsifying and dispersing a hydrophobic deodorizing component, and then the emulsion aqueous solution and the porous carrier are mixed in an amount of 0.15 parts by volume or more with respect to 1 part by volume of the porous carrier. It is characterized by being uniformly mixed at a bath ratio of 0.35 parts by volume or less and then dried. The “emulsion aqueous solution” of the present invention comprehensively indicates a liquid or solid deodorizing component dispersed and suspended by the action of a surfactant.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described. In the method of the present invention, by adopting the above-described configuration, the emulsion aqueous solution in which the hydrophobic deodorizing component is emulsified and dispersed and the porous carrier are uniformly mixed and adhered. For this reason, in order to achieve a desired amount of attachment, it is possible to perform attachment with a small amount of an aqueous emulsion solution containing a high-concentration deodorizing component. Therefore, the bath ratio of the emulsion aqueous solution with respect to the porous carrier can be made small, and the filtration step required in the conventional dipping method is substantially unnecessary.
[0010]
In addition, an amphiphilic solvent such as alcohol disclosed in Document 2 is unnecessary, and even if the deodorized component itself has an odor, the component is held in an emulsion state, so that the odor can be reduced. Can do. Therefore, it is possible to provide excellent coking coal with a simple facility at low cost without adopting airtightness or an explosion-proof structure for the facility.
[0011]
The hydrophobic deodorizing component used in the method of the present invention can be used even in a solid state at room temperature as long as it dissolves in water at less than about 5 mass% at room temperature, and is not particularly limited. However, aniline, toluidine, phenylenediamine, aminobenzoic acid, aminophenol and the like can be used, and aniline having a high deodorizing performance with respect to lower fatty acids and aldehydes is particularly preferable.
[0012]
Moreover, as a porous support | carrier which can be used by this invention, the granular material which consists of clay minerals, such as a zeolite, a silica gel, activated alumina, or sepiolite besides the above-mentioned activated carbon, can be mentioned.
[0013]
The surfactant constituting the emulsion aqueous solution can be variously selected according to the charge possessed by the deodorizing component, but a nonionic surfactant that hardly inhibits the charge of the deodorizing component is employed. Is preferred. Moreover, when employing the above-mentioned aniline as a hydrophobic deodorizing component, it is preferable to use a nonionic surfactant and an anionic surfactant in combination in order to increase the stability after preparation of the aqueous emulsion solution.
[0014]
Furthermore, when the porous carrier and the emulsion aqueous solution are uniformly mixed, the emulsion aqueous solution is in the range of 0.15 to 0.35 parts by volume with respect to 1 part by volume of the porous carrier . When the bath ratio of the emulsion aqueous solution is made smaller than this range, it becomes difficult to uniformly apply the deodorizing component, and when the bath ratio is increased, it becomes difficult to omit the filtering step.
[0015]
【Example】
Examples of the present invention will be described below. This example illustrates activated carbon as a porous carrier and aniline as a hydrophobic deodorizing component, and shows the results of preparing and evaluating an aqueous emulsion solution under various conditions. The specific conditions described below are shown to such an extent that the present invention can be easily understood. The present invention is not limited to these specific conditions, and is arbitrarily suitable within the scope of the object. Design changes and modifications may be made.
[0016]
Example 1
Example 1 shows the results of preparing and evaluating an aqueous emulsion solution by changing the ratio of a commercially available nonionic surfactant and a hydrophobic deodorizing component in various ways. First, 1 part by weight of aniline is added to 10 parts by weight of water, and an emulsion aqueous solution is prepared by varying the amount of “Emalmin 70” (manufactured by Sanyo Chemical Industries, Ltd .; trade name). The emulsified state within minutes was observed. As a result, when aniline is dispersed by about 9 mass% corresponding to about 3 times its solubility, 0.20 part by weight (about 1.8 mass%) of surfactant is added to obtain a good emulsified state. Was obtained. At half of this preferred addition amount, aniline settled as oil droplets as before the addition of the surfactant, and even when a surfactant corresponding to 1.5 times the preferred addition amount was added, oil droplet precipitation was observed. .
[0017]
Example 2
Next, as Example 2, the state of the emulsion aqueous solution prepared with a series of nonionic surfactants having the same main chain as the above surfactant and variously added moles of ethylene oxide was the same as in Example 1. Observed and evaluated. In preparing the aqueous emulsion, each surfactant was added in a uniform amount of 0.2 parts by weight obtained in Example 1 with respect to 10 parts by weight of water and 1 part by weight of aniline. The results are shown in Table 1. The names of the surfactants shown in the table are trade names of Sanyo Chemical Industries, Ltd.
[0018]
[Table 1]
Figure 0003772058
[0019]
As shown in Table 1, a test was conducted by changing the number of added moles of ethylene oxide in various ways. As a result, “Emalmin 70” having an HLB (Hydrophilic Lipophilic Balance) of 10.8, which showed a good result in Example 1, was centered. As a result, a good emulsified state was obtained with “Emalmin 60” having a lower HLB degree of 10.2 and “Emalmin 110” having a higher HLB degree of 13.2. From this result, it can be understood that when the deodorizing component is aniline, the surfactant as the main agent is preferably in the HLB range of 10.2 to 13.2.
[0020]
Example 3
In Example 3, from the results obtained in Example 1 and Example 2, the stability of the emulsion aqueous solution after being allowed to stand for about 1 hour was evaluated by using the nonionic surfactant in combination with the anionic surfactant. did. In this evaluation, when adding a surfactant to 10 parts by weight of water and 1 part by weight of aniline as in the above two evaluation tests, the sum of the added amounts of these two types of surfactants is fixed at 0.2 parts by weight. Then, an emulsion aqueous solution was prepared by changing the ratio between these surfactants. At this time, “Emalmin 70” is used as a nonionic surfactant, and “Sanmorin OT-70” (manufactured by Sanyo Chemical Industries, Ltd .; trade name) mainly composed of sodium dioctylsulfosuccinate as an anionic surfactant. Was used. The results are shown in Table 2.
[0021]
[Table 2]
Figure 0003772058
[0022]
First, when only the nonionic surfactant was applied, the emulsified state immediately after preparation of the emulsion was good, but after leaving for 1 hour, only oil droplets that seemed to be aniline settled. Moreover, when the ratio of nonionic surfactant: anionic surfactant was 4: 1, the most stable aqueous emulsion solution could be prepared. When the ratio of the anionic surfactant was further increased, when the ratio was set to 3: 2, the oil droplets floated, and when the ratio was reversed to 2: 3, the emulsion itself settled. It became.
[0023]
From the results of Examples 1 to 3, when emulsifying and preparing aniline as an aqueous emulsion solution, the aqueous emulsion solution is stabilized for a sufficient time as an attaching step by using nonionic and anionic surfactants in a predetermined ratio. It became clear to get. Based on this knowledge, about 5 mass% aniline is contained by uniformly mixing and drying 0.30 part by volume of the emulsion aqueous solution prepared under the above-mentioned preferred conditions for 1 part by volume of activated carbon. A porous deodorizing material was obtained. In these impregnation steps, the odor of aniline was extremely low, and the deodorizing performance of the obtained impregnated charcoal against aldehyde was also good. Moreover, when the bath ratio of activated carbon and emulsion aqueous solution was made less than 0.15, emulsion aqueous solution did not spread over the whole activated carbon, and the adhesion became non-uniform | heterogenous. Furthermore, when the bath ratio was larger than 0.35, an excessive emulsion aqueous solution remained after mixing, requiring a filtration step, and further, a waste liquid treatment was required.
[0024]
【The invention's effect】
As is apparent from the above description, according to the method for producing a porous deodorizing material according to the present invention, the hydrophobic deodorizing component and the surface active activity are added to the porous carrier of the granular material. An emulsion aqueous solution is formed by emulsifying and dispersing a hydrophobic deodorizing component by adding an agent to water, and then the emulsion aqueous solution and the porous carrier are added in an amount of 0.15 parts by volume or more with respect to 1 part by volume of the porous carrier. , And uniformly drying at a bath ratio of 0.35 parts by volume or less, followed by drying. For this reason, the hydrophobic deodorizing component is dispersed as an aqueous emulsion that is easy to handle in the attaching step, and is attached to the porous carrier at a relatively high concentration. Therefore, a desired amount of adhesion can be obtained by mixing a relatively small amount of emulsion aqueous solution with the porous carrier, and a simple facility is not required without a filtration step as in the conventional dipping method. In a short time, an excellent porous deodorizing material can be efficiently produced.

Claims (3)

粉粒体の多孔質担体に、疎水性脱臭成分を添着するに当たり、該疎水性脱臭成分及び界面活性剤を水に加え疎水性脱臭成分を乳化分散してなるエマルジョン水溶液を形成し、次いで該エマルジョン水溶液と多孔質担体とを、多孔質担体1容量部に対し、エマルジョン水溶液を0.15容量部以上、0.35容量部以下の浴比で均一混合した後に乾燥することを特徴とする多孔質脱臭材の製造方法。 When a hydrophobic deodorizing component is attached to a porous carrier of a granular material, an aqueous emulsion solution is formed by adding the hydrophobic deodorizing component and a surfactant to water and emulsifying and dispersing the hydrophobic deodorizing component, and then the emulsion. A porous material characterized in that an aqueous solution and a porous carrier are uniformly mixed at a bath ratio of 0.15 to 0.35 parts by volume with respect to 1 part by volume of the porous carrier and then dried. Manufacturing method of deodorizing material. 前記疎水性脱臭成分をアニリンとしたことを特徴とする請求項に記載の多孔質脱臭材の製造方法。The method for producing a porous deodorizing material according to claim 1 , wherein the hydrophobic deodorizing component is aniline. 前記界面活性剤をノニオン性界面活性剤とアニオン性界面活性剤としたことを特徴とする請求項1または請求項2に記載の多孔質脱臭材の製造方法。The method for producing a porous deodorizing material according to claim 1 or 2 , wherein the surfactant is a nonionic surfactant and an anionic surfactant.
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