JPH07116510A - Adsorbent and porous adsorbing material - Google Patents
Adsorbent and porous adsorbing materialInfo
- Publication number
- JPH07116510A JPH07116510A JP5293886A JP29388693A JPH07116510A JP H07116510 A JPH07116510 A JP H07116510A JP 5293886 A JP5293886 A JP 5293886A JP 29388693 A JP29388693 A JP 29388693A JP H07116510 A JPH07116510 A JP H07116510A
- Authority
- JP
- Japan
- Prior art keywords
- adsorbent
- acf
- activated carbon
- finely pulverized
- gas
- 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.)
- Granted
Links
Landscapes
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Treating Waste Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は，自動車用空気清浄器，
室内用空気清浄器，又は蒸発燃料処理装置等，多目的に
用いられる吸着体及び多孔吸着材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile air cleaner,
The present invention relates to an adsorbent and a porous adsorbent that are used for various purposes such as an indoor air purifier or a fuel vapor treatment device.
【０００２】[0002]
【従来技術】近年，内燃機関の燃料タンクから発生する
燃料空気が，環境や人体に与える悪影響が問題となって
いる。そのため，蒸気の排出規制を強化する動きがあ
る。また，室内の快適化志向が強まる中で脱臭ニーズも
高まりつつある。このように，様々な環境改善志向が高
まるなかで，燃料蒸気や臭気等を吸着する吸着体が求め
られている。かかる要望に対し，従来，例えば，活性
炭，触媒等の各種脱臭剤をシート状，ハニカム状に成形
する方法や，活性炭素繊維を主材とするウェップ，トウ
のような多孔性の繊維集合体を用いる方法がある（特公
昭５９─２４２７１号公報）。2. Description of the Related Art In recent years, the adverse effect of fuel air generated from a fuel tank of an internal combustion engine on the environment and the human body has become a problem. Therefore, there is a move to tighten steam emission regulations. In addition, the need for deodorization is increasing as the desire for indoor comfort increases. In this way, as various environmental improvement intentions increase, an adsorbent that adsorbs fuel vapor, odor, etc. is required. In response to such a demand, conventionally, for example, a method of forming various deodorants such as activated carbon and a catalyst into a sheet shape or a honeycomb shape, or a porous fiber aggregate such as a web or a tow containing activated carbon fibers as a main material is used. There is a method used (Japanese Patent Publication No. 59-24271).
【０００３】[0003]
【解決しようとする課題】しかしながら，上記前者の活
性炭を用いる方法では，吸着速度が比較的遅く速効性が
弱い等の問題がある。また，後者の繊維集合体を用いる
方法は，吸着速度が比較的速いため，速効性がある。し
かし，活性炭素繊維は充填密度が低いため，粉末活性炭
以上に容積当たりの吸着効果を向上させることは困難で
ある。[Problems to be Solved] However, the former method using activated carbon has a problem that the adsorption rate is relatively slow and the rapid effect is weak. Further, the latter method using the fiber assembly has a fast effect because the adsorption rate is relatively high. However, since the packing density of activated carbon fiber is low, it is difficult to improve the adsorption effect per volume more than powdered activated carbon.
【０００４】また，多孔性の活性炭素繊維を用いる場合
には，繊維間の開孔空間が微少になるために圧力損失が
高くなる。また，長期間繰り返し使用する間に，目詰ま
り等によりパージエアが流れにくく脱離しにくくなる。
そのために再生効率が悪くなるという問題がある。本発
明はかかる従来の問題点に鑑み，吸着性能及び再生性能
に優れた吸着体及び多孔吸着材を提供しようとするもの
である。Further, when porous activated carbon fibers are used, the pressure loss becomes high because the open spaces between the fibers are very small. Also, during repeated use over a long period of time, purging air does not easily flow due to clogging, etc., and it becomes difficult to separate it.
Therefore, there is a problem that the reproduction efficiency is deteriorated. In view of such conventional problems, the present invention aims to provide an adsorbent and a porous adsorbent having excellent adsorption performance and regeneration performance.
【０００５】[0005]
【課題の解決手段】本発明は，活性炭素繊維の微粉砕体
を顆粒状に成形してなることを特徴とする吸着体にあ
る。The present invention is an adsorbent characterized in that a finely pulverized body of activated carbon fibers is formed into a granular shape.
【０００６】本発明において，活性炭素繊維の微粉砕体
は，微細な多くの細孔を有する。微粉砕体の比表面積は
特に限定しないが，７００〜２０００ｍ2 ／ｇであるこ
とが好ましい。７００ｍ2 ／ｇ未満の場合には，吸着量
が不十分になるおそれがある。一方，２０００ｍ2 ／ｇ
を越える場合には，細孔容積が大きくなり，充填密度が
上がりにくく，製造面においても著しく効率が悪いた
め，入手出来にくくなるおそれがある。ここに，比表面
積とは，微粉砕体の単位重量当たりの細孔も含めた表面
積をいう。また，微粉砕体の繊維方向の長さは，０．０
５〜０．５ｍｍであることが好ましい。０．０５ｍｍ未
満の場合には，細かすぎて取り扱いが困難になるおそれ
がある。一方，０．５ｍｍを越える場合には，微粉砕体
の容積当たりの吸着性能が劣るおそれがある。In the present invention, the finely pulverized body of activated carbon fibers has many fine pores. The specific surface area of the finely pulverized body is not particularly limited, but it is preferably 700 to 2000 m 2 / g. If it is less than 700 m 2 / g, the amount of adsorption may be insufficient. On the other hand, 2000m 2 / g
If it exceeds, the pore volume becomes large, the packing density is difficult to increase, and the efficiency is extremely inferior in terms of manufacturing as well, which may make it difficult to obtain. Here, the specific surface area means a surface area including pores per unit weight of the finely pulverized body. The length of the finely pulverized material in the fiber direction is 0.0
It is preferably 5 to 0.5 mm. If it is less than 0.05 mm, it may be too fine and difficult to handle. On the other hand, when it exceeds 0.5 mm, the adsorption performance per volume of the finely pulverized body may be deteriorated.
【０００７】上記活性炭素繊維は，被吸着ガスに応じ
て，細孔径，比表面積の適正なものを選定すればよく，
複合被吸着ガスに対しては特性の異なる活性炭素繊維を
数種類組み合わせて用いてもよい。特に大きな分子の被
吸着ガスを含む場合には，細孔径の大きな粉末活性炭を
上記微粉砕体と組み合わせても効果がある。The activated carbon fiber may have a proper pore size and specific surface area depending on the gas to be adsorbed.
Several kinds of activated carbon fibers having different characteristics may be used in combination for the composite adsorbed gas. Particularly when a gas to be adsorbed having a large molecule is contained, it is effective to combine powdered activated carbon having a large pore size with the finely pulverized body.
【０００８】上記吸着体を製造する方法について，その
一例を説明する。まず，活性炭素繊維をミキサー等によ
り粗く粉砕して粗粒子とする。次に，この粗粒子をボー
ルミル等により顆粒状に粉砕して，活性炭素繊維の微粉
砕体を調製する。次いで，この微粉砕体にバインダー及
び水等を加え，混練する。その後，これを造粒機により
顆粒状に成形して，上記吸着体を得る。上記バインダー
としては，顆粒の中心部分まで吸着性能に寄与させるた
め，被膜性の小さい樹脂，例えば，水添ロジン，コーン
スターチ，メチルセルロース等を用いることが好まし
い。An example of a method for producing the above adsorbent will be described. First, the activated carbon fiber is roughly pulverized with a mixer to obtain coarse particles. Next, the coarse particles are pulverized into a granular shape by a ball mill or the like to prepare a finely pulverized body of activated carbon fibers. Then, a binder, water and the like are added to this finely pulverized body and kneaded. Then, this is formed into a granule by a granulator to obtain the adsorbent. As the binder, it is preferable to use a resin having a small film-forming property, such as hydrogenated rosin, corn starch, or methyl cellulose, in order to contribute to the adsorption performance even in the central portion of the granules.
【０００９】また，本発明の吸着体において，上記活性
炭素繊維の微粉砕体には，酸性ガス吸着物，塩基性ガス
吸着物のいずれか一方又は両方が添着されていることが
好ましい。これにより，低圧損で，かつ酸性，塩基性，
中性の被吸着ガスに対して吸着速度が速く，他に類のな
いワンパス脱臭性能，即ちワンパス無臭を実現するもの
である。この添着方法としては，例えば，上記酸性ガス
吸着物，塩基性ガス吸着物のいずれか一方又は両方の溶
液中において，上記活性炭素繊維の粗粒子を湿式混合し
て，該粗粒子の微細化と上記有機物の添着とを同時に行
う方法がある。In the adsorbent of the present invention, it is preferable that either one or both of an acidic gas adsorbate and a basic gas adsorbate be attached to the finely pulverized body of activated carbon fibers. As a result, low pressure loss, acidity, basicity,
It has a fast adsorption speed for the neutral gas to be adsorbed and realizes one-pass deodorizing performance that is unmatched, that is, one-pass odorless. The method of impregnation includes, for example, wet-mixing the coarse particles of the activated carbon fiber in a solution of one or both of the acidic gas adsorbate and the basic gas adsorbate, and finely pulverizing the coarse particles. There is a method of simultaneously impregnating the organic substance.
【００１０】上記酸性ガス吸着物は，アミノ基を有する
有機化合物であり，３─アミノプロピルトリハイドロシ
ラン，γ─アミノプロピルエトキシシラン，ジメチルト
リメチルシリルアミン，及びＮ−（２−アミノエチル）
─３─アミノプロピルトリメトキシシランのグループか
ら選ばれた１又は２種以上の化合物等である。上記酸性
ガス吸着物は，硫化水素，アセトアルデヒド等の酸性ガ
スを吸着することができるものである。The acidic gas adsorbate is an organic compound having an amino group, and includes 3-aminopropyltrihydrosilane, γ-aminopropylethoxysilane, dimethyltrimethylsilylamine, and N- (2-aminoethyl).
—One or two or more compounds selected from the group of 3-aminopropyltrimethoxysilane. The acid gas adsorbate is capable of adsorbing acid gas such as hydrogen sulfide and acetaldehyde.
【００１１】上記塩基性ガス吸着物は，カルボキシル基
を有する有機化合物であり，Ｌ−酒石酸，酸化コバル
ト，酸化マンガン，アセチルアセトンコバルト，アセチ
ルアセトンマンガン，リンゴ酸，及びコハク酸のグルー
プから選ばれた１又は２種以上の化合物等である。上記
塩基性ガス吸着物は，アンモニア等のアルカリ性ガスを
吸着することができるものである。上記吸着体は，シー
ト状，ハニカム状に成形して用いることができる。The basic gas adsorbate is an organic compound having a carboxyl group and is selected from the group consisting of L-tartaric acid, cobalt oxide, manganese oxide, acetylacetone cobalt, acetylacetone manganese, malic acid, and succinic acid. Two or more compounds and the like. The basic gas adsorbate is capable of adsorbing an alkaline gas such as ammonia. The adsorbent may be formed into a sheet shape or a honeycomb shape before use.
【００１２】また，上記吸着体を多孔体に担持して，多
孔吸着材を構成することもできる。上記多孔体は，三次
元網目構造を有し，例えば，ウレタンフォーム，ハニカ
ム等を用いる。この多孔吸着材は，従来の活性炭に比べ
て吸着速度が速い。また，多孔吸着材は，三次元網目構
造である。それ故，その内部にガスを通す場合には，低
圧損で，被吸着ガスとの接触効率が良い。従って，ワン
パスの吸着効果に優れている。また，上記多孔吸着材
は，特に硫化水素，アセトアルデヒド，アンモニア等の
臭気成分の吸着性能が良く，優れた脱臭剤として機能を
発揮することができる。A porous adsorbent can be constructed by supporting the adsorbent on a porous body. The porous body has a three-dimensional network structure, and for example, urethane foam, honeycomb, or the like is used. This porous adsorbent has a higher adsorption rate than conventional activated carbon. The porous adsorbent has a three-dimensional mesh structure. Therefore, when the gas is passed through the inside, there is a low pressure loss and the contact efficiency with the adsorbed gas is good. Therefore, it has an excellent one-pass adsorption effect. In addition, the porous adsorbent has a good adsorption performance for odorous components such as hydrogen sulfide, acetaldehyde, ammonia, etc., and can function as an excellent deodorant.
【００１３】上記吸着体を多孔体に担持する方法として
は，粘性のあるスラリー状の微粉砕体の中に多孔体を含
浸し，これを乾燥する等，一般的な方法がある。含浸し
た後，この多孔体を連通気孔とし，乾燥することが好ま
しい。これにより，三次元網目構造の吸着体が得られ
る。また，他の有効な充填方法として，粒状活性炭表面
に上記微粉砕体をコーティングする方法もある。As a method for supporting the adsorbent on the porous body, there is a general method such as impregnating the porous body in a viscous slurry finely pulverized body and drying the porous body. After impregnation, it is preferable that the porous body is used as a continuous ventilation hole and dried. As a result, an adsorbent having a three-dimensional network structure is obtained. Further, as another effective filling method, there is a method of coating the finely pulverized body on the surface of the granular activated carbon.
【００１４】更に，多孔体に，上記吸着体の全量を担持
させたときは，従来の粒状活性炭より吸収，脱着速度が
著しく速くなる。そのため，脱臭剤のほぼ全量が吸着に
利用されるため，最も優れた性能を発揮する。また，吸
着体を粒状活性炭と組み合わせて多孔体に担持させても
よい。この場合においても，活性炭素繊維の微粉砕体が
存在するため，吸着性能が向上する。Further, when the entire amount of the above-mentioned adsorbent is carried on the porous body, the absorption and desorption speeds are remarkably faster than the conventional granular activated carbon. As a result, almost all of the deodorant is used for adsorption, resulting in the best performance. Further, the adsorbent may be combined with granular activated carbon and supported on the porous body. Even in this case, since the finely pulverized body of activated carbon fibers is present, the adsorption performance is improved.
【００１５】[0015]
【作用及び効果】本発明の吸着体においては，活性炭素
繊維の微粉砕体を顆粒化して用いている。そのため，吸
着用タンク等の収納体内に，高密度に充填することがで
きる。それ故，容積当たりの被吸着ガスの吸着性能が高
い。また，収納体内に充填するに当たって，活性炭素繊
維をそのまま用いる場合のようなプレス等を行う必要が
ない。そのため，取扱易く，作業性が向上する。また，
収納体の小型化を図ることができる。また，活性炭素繊
維の微粉砕体を顆粒化したものを用いているため，流体
の流れがよい。それ故，本発明の吸着体は，使用中にお
ける圧力損失が低い。従って，長期間に渡って繰り返し
使用することができ，再生性能に優れている。FUNCTION AND EFFECT In the adsorbent of the present invention, a finely pulverized body of activated carbon fiber is granulated and used. Therefore, it is possible to highly densely fill the storage body such as the adsorption tank. Therefore, the adsorption performance of the adsorbed gas per volume is high. In addition, when filling the container, it is not necessary to press the activated carbon fiber as it is. Therefore, it is easy to handle and the workability is improved. Also,
It is possible to reduce the size of the storage body. In addition, since a finely pulverized body of activated carbon fiber is used, the fluid flow is good. Therefore, the adsorbent of the present invention has a low pressure loss during use. Therefore, it can be used repeatedly over a long period of time and has excellent playback performance.
【００１６】また，活性炭素繊維は，粒状活性炭にない
微細な細孔を多く有する。そのため，粒状活性炭では吸
着されにくい，低濃度，小分子の被吸着ガスを十分に吸
着することができる。従って，本発明の吸着体は，蒸発
燃料，臭気成分，有害ガス等の被吸着ガスを吸着するこ
とができる。Further, the activated carbon fiber has many fine pores which the granular activated carbon does not have. Therefore, it is possible to sufficiently adsorb the low-concentration, small-molecule adsorbed gas that is difficult to be adsorbed by the granular activated carbon. Therefore, the adsorbent of the present invention can adsorb adsorbed gases such as evaporated fuel, odorous components, and harmful gases.
【００１７】更に，本発明の吸着体は，多方面の用途に
おいて波及効果を期待することができる。例えば，上記
吸着体は，ガソリン内燃機関，ディーゼル内燃機関，燃
料タンク等に装着された蒸発燃料処理装置，自動車用又
は室内用空気清浄器，浄水器，溶剤回収装置等に用いる
ことができる。上記のごとく，本発明によれば，吸着性
能及び再生性能に優れた吸着体及び多孔吸着材を提供す
ることができる。Furthermore, the adsorbent of the present invention can be expected to have a ripple effect in various applications. For example, the adsorbent can be used in a gasoline internal combustion engine, a diesel internal combustion engine, an evaporated fuel processing device mounted on a fuel tank, an automobile or indoor air purifier, a water purifier, a solvent recovery device, and the like. As described above, according to the present invention, it is possible to provide an adsorbent and a porous adsorbent having excellent adsorption performance and regeneration performance.
【００１８】[0018]
実施例１ 本発明の実施例にかかる吸着体について，図１，図２を
用いて説明する。本例の吸着体は，活性炭素繊維（以
下，ＡＣＦという。）の微粉砕体を顆粒状に成形してな
り，図２に示す蒸発燃料処理装置２のタンク３内に充填
されている。以下，上記吸着体の製造方法について，図
１を用いて詳説する。Example 1 An adsorbent according to an example of the present invention will be described with reference to FIGS. The adsorbent of this example is formed by finely pulverizing activated carbon fibers (hereinafter referred to as ACF) into a granular shape, and is filled in the tank 3 of the evaporated fuel processing device 2 shown in FIG. Hereinafter, a method for manufacturing the adsorbent will be described in detail with reference to FIG.
【００１９】即ち，まず，ワタ状のＡＣＦと水とをミキ
サーに入れ，ＡＣＦと水との重量比は１対１００とし，
ＡＣＦを３分間湿式粉砕した。これにより，粗粒子とし
てのＡＣＦ短繊維（繊維の長さ５ｍｍ以下）を得た。次
いで，このＡＣＦ短繊維をボールミルにて微粉砕し，脱
水，乾燥する。これにより，ＡＣＦの微粉砕体を得た。
該微粉砕体の比表面積は１２００ｍ2 ／ｇであり，微粉
砕体の繊維方向の長さは０．１ｍｍである。That is, first, cotton-like ACF and water are put into a mixer, and the weight ratio of ACF and water is set to 1: 100.
The ACF was wet milled for 3 minutes. As a result, ACF short fibers (fiber length of 5 mm or less) as coarse particles were obtained. Next, the ACF short fibers are finely pulverized with a ball mill, dehydrated and dried. As a result, a finely pulverized body of ACF was obtained.
The specific surface area of the finely pulverized body is 1200 m 2 / g, and the length of the finely pulverized body in the fiber direction is 0.1 mm.
【００２０】次に，上記微粉砕体に，バインダーと水と
を加えて，らいかい機にて混練し，スラリーを得た。バ
インダーは，上記微粉砕体１重量部に対して，２重量部
加えた。水は，バインダー及び微粉砕体９５重量％に対
して，５重量％を加えた。バインダーとしてはコーンス
ターチを用いた。次に，このスラリーを，造粒機（アイ
リッヒミキサー，ペレタイザー）にて，１〜２ｍｍの顆
粒状に成形し，１２０℃，３時間乾燥し，吸着体を得
た。Next, a binder and water were added to the finely pulverized body, and the mixture was kneaded by a smelting machine to obtain a slurry. The binder was added in an amount of 2 parts by weight with respect to 1 part by weight of the finely pulverized body. 5% by weight of water was added to 95% by weight of the binder and the finely pulverized material. Corn starch was used as the binder. Next, this slurry was formed into granules of 1 to 2 mm with a granulator (Erich mixer, pelletizer) and dried at 120 ° C. for 3 hours to obtain an adsorbent.
【００２１】次に，図２に示すごとく，上記により得た
吸着体１は，下記の性能テストに供するため，蒸発燃料
処理装置２のタンク３内に充填した。該タンク３には，
燃料タンクポート４と，大気ポート５と，パージポート
６とを設けている。上記吸着体１は，タンク３内に設け
られた多孔状の整流板３０，３１の間に充填されて，固
定されている。タンク３は，容積８５０ｃｃ，高さ１２
ｃｍである。Next, as shown in FIG. 2, the adsorbent 1 obtained as described above was filled in the tank 3 of the evaporated fuel processing apparatus 2 for the following performance test. In the tank 3,
A fuel tank port 4, an atmosphere port 5, and a purge port 6 are provided. The adsorbent 1 is filled and fixed between the porous rectifying plates 30 and 31 provided in the tank 3. The tank 3 has a volume of 850 cc and a height of 12
cm.
【００２２】次に，この吸着体の再生性能について測定
した。測定に当たっては，まず，大気ポート５及びパー
ジポート６を閉じた状態で，燃料タンクポート４より，
上記吸着体１を収納したタンク３内に，測定用ガスとし
ての９９．９％ｎ−ブタンを０．５リットル／分間の流
速で導入した。そして，吸着体１に０．３％破過終点ま
で上記測定用ガスを吸着させた（ＪＡＳＯＥ５０１−９
０準拠）。このときの吸着体の重量を測定し，「ガス吸
着時の重量」とした。Next, the regeneration performance of this adsorbent was measured. In the measurement, first, from the fuel tank port 4 with the atmosphere port 5 and the purge port 6 closed,
99.9% n-butane as a measuring gas was introduced into the tank 3 containing the adsorbent 1 at a flow rate of 0.5 liter / minute. Then, the measuring gas was adsorbed to the adsorbent 1 up to the 0.3% breakthrough end point (JASOE 501-9).
0 compliant). The weight of the adsorbent at this time was measured and defined as "weight at gas adsorption".
【００２３】その後，上記燃料タンクポート４を閉塞
し，測定用ガスの導入を停止した。その一方で，大気ポ
ート５から２００リットルの空気を１０リットル／分間
の流速で導入した。これと同時に，パージポート６を開
けて，タンク３中の大気及び吸着体１より脱離した測定
用ガスを，該パージポート６から２０分間放出させた。
このときの吸着体の重量を測定し，「ガス脱離時の重
量」とした。Thereafter, the fuel tank port 4 was closed and the introduction of the measuring gas was stopped. On the other hand, 200 liters of air was introduced from the atmospheric port 5 at a flow rate of 10 liters / minute. At the same time, the purge port 6 was opened, and the atmosphere in the tank 3 and the measurement gas desorbed from the adsorbent 1 were discharged from the purge port 6 for 20 minutes.
The weight of the adsorbent at this time was measured and defined as "weight at the time of gas desorption".
【００２４】そして，吸着体１の再生性能をワーキング
キャパシティ（Ｗ．Ｃ．）として，以下の式により算出
し，その結果を表１に示した。 Ｗ．Ｃ．＝ガス吸着時の重量（ｇ）−ガス離脱後の重量
（ｇ） 尚，比較のために，微粉末化処理を行っていないＡＣＦ
長繊維（繊維方向の長さ１ｍｍ）を比較例１とし，これ
についても，上記と同様にワーキングキャパシティを測
定した。上記測定結果より，本発明にかかる吸着体１の
ワーキングキャパシティは，従来例に係る粒状活性炭に
比べて４０％程度向上したことが確認された。Then, the regeneration performance of the adsorbent 1 was calculated as the working capacity (WC) by the following formula, and the results are shown in Table 1. W. C. = Weight when adsorbing gas (g) -Weight after desorption of gas (g) For comparison, the ACF that has not been subjected to the pulverization treatment
A long fiber (length 1 mm in the fiber direction) was used as Comparative Example 1, and the working capacity of this was also measured in the same manner as above. From the above measurement results, it was confirmed that the working capacity of the adsorbent 1 according to the present invention was improved by about 40% as compared with the granular activated carbon according to the conventional example.
【００２５】このように，ＡＣＦを顆粒状にした微粉砕
体を吸着体として用いることにより，粒状活性炭と同程
度に充填密度を向上させることができる。それ故，容積
当たりの被吸着ガスの吸着性能が高い。また，使用中に
おける圧力損失が低く，長期間に渡って繰り返し使用す
ることができる。As described above, the packing density can be improved to the same level as that of the granular activated carbon by using the finely pulverized material obtained by granulating ACF as the adsorbent. Therefore, the adsorption performance of the adsorbed gas per volume is high. In addition, the pressure loss during use is low and it can be used repeatedly over a long period of time.
【００２６】また，ＡＣＦをワタ状のままタンク内に充
填するには，プレス機等により圧縮することが必要であ
り，そのために大がかりな設備を必要とする。しかし，
本例においては活性炭素繊維の微粉砕体を顆粒状に成形
しているため，タンク３内に充填する際には，プレス等
を行う必要がない。そのため，取扱易く，作業性が向上
する。また，タンクの小型化を図ることができる。Further, in order to fill the tank with the ACF in the form of cotton, it is necessary to compress it with a press machine or the like, which requires large-scale equipment. However,
In this example, since the finely pulverized body of activated carbon fibers is formed into a granular shape, it is not necessary to press the tank 3 when filling the tank 3. Therefore, it is easy to handle and the workability is improved. Further, the tank can be downsized.
【００２７】また，ＡＣＦは，元来粒状活性炭にない微
細な細孔を多くもつため，低濃度，小分子の被吸着ガス
の吸着に優れている。そのため，多種類の被吸着ガスを
吸着することができる。そして，このＡＣＦは，微粉末
化されても，上記の優れた特性を保持することができ
る。また，微粉末化されることにより，充填密度が向上
し，その分だけ吸着，脱着性能が向上する。Further, since ACF has many fine pores which are not originally present in granular activated carbon, ACF is excellent in adsorbing an adsorbed gas of low concentration and small molecule. Therefore, it is possible to adsorb many kinds of adsorbed gases. The ACF can maintain the above excellent characteristics even when it is made into a fine powder. Further, by being made into a fine powder, the packing density is improved, and the adsorption / desorption performance is improved correspondingly.
【００２８】[0028]
【表１】 [Table 1]
【００２９】実施例２ 本例は，吸着体を脱臭剤として用いた例である。上記吸
着体において，活性炭素繊維（以下，ＡＣＦという。）
の微粉砕体には，酸性ガス吸着物及び活性炭素繊維が添
着されている。この吸着体は，多孔体に充填されてい
る。上記酸性ガス吸着物としては，３─アミノプロピル
トリハイドロシラン（以下，ＡＰＴＳという。）を用い
ている。上記塩基性ガス吸着物としては，Ｌ−酒石酸を
用いている。上記多孔体は，三次元網目構造を有し，ウ
レタンフォームを用いている。Example 2 In this example, an adsorbent was used as a deodorant. In the above adsorbent, activated carbon fiber (hereinafter referred to as ACF)
Acid gas adsorbate and activated carbon fibers are attached to the finely pulverized product. This adsorbent is filled in a porous body. 3-Aminopropyltrihydrosilane (hereinafter referred to as APTS) is used as the acidic gas adsorbate. L-tartaric acid is used as the basic gas adsorbate. The porous body has a three-dimensional network structure and uses urethane foam.
【００３０】次に，上記吸着体の製造方法について，図
３を用いて説明する。即ち，まず，ＡＣＦと水とをミキ
サーに入れて，ＡＣＦの湿式粉砕を行い，粗粒子として
のＡＣＦ短繊維（繊維の長さ５ｍｍ以下）を得る。この
とき，ＡＦＣと水との重量比は１対１００とし，粉砕時
間は３分間とした。次に，このＡＣＦ短繊維をボールミ
ル中に入れ，更に，上記ＡＰＴＳ水溶液とＬ−酒石酸水
溶液とを各々加えた。ＡＰＴＳと両水溶液の濃度は，各
々０．１ｍｏｌ／リットルである。また，ＡＣＦ短繊維
とＡＰＴＳとＬ−酒石酸との重量比は，３対１対１とし
た。Next, a method for manufacturing the adsorbent will be described with reference to FIG. That is, first, ACF and water are put into a mixer and wet pulverization of ACF is performed to obtain ACF short fibers (fiber length is 5 mm or less) as coarse particles. At this time, the weight ratio of AFC and water was 1: 100, and the grinding time was 3 minutes. Next, the ACF short fibers were put into a ball mill, and the APTS aqueous solution and the L-tartaric acid aqueous solution were further added. The concentrations of APTS and both aqueous solutions are each 0.1 mol / liter. The weight ratio of ACF short fibers, APTS, and L-tartaric acid was set to 3: 1: 1.
【００３１】次いで，上記ボールミルを１０時間回転さ
せて，ＡＣＦ短繊維とＡＰＴＳとＬ−酒石酸との微粉化
を行うと共に，ＡＣＦ短繊維にＡＰＴＳとＬ−酒石酸と
を各々添着させ，アミノ基とカルボキシル基を担持させ
た。次に，これらを脱水し，１２０℃／２時間乾燥し
た。これにより，ＡＰＴＳ添着ＡＣＦ及びＬ−酒石酸添
着ＡＣＦを得た。Then, the ball mill is rotated for 10 hours to finely pulverize the ACF short fibers, APTS and L-tartaric acid, and at the same time, APTS and L-tartaric acid are attached to the ACF short fibers respectively, and amino groups and carboxyl groups are added. The group was supported. Next, these were dehydrated and dried at 120 ° C./2 hours. As a result, APTS-impregnated ACF and L-tartaric acid-impregnated ACF were obtained.
【００３２】次に，上記ＡＰＴＳ添着ＡＣＦ及びＬ−酒
石酸添着ＡＣＦを，バインダー及び水と混合して，含浸
用スラリーを調製した。バインダーとしては，被膜性の
少ないコーンスターチを用いた。バインダー添加量は，
ＡＣＦの５重量倍とし，０．５％水溶液になるように調
整した。Next, the APTS-impregnated ACF and the L-tartaric acid-impregnated ACF were mixed with a binder and water to prepare a slurry for impregnation. As the binder, cornstarch, which has a low coating property, was used. The amount of binder added is
The amount of ACF was adjusted to 5 times the weight of ACF to prepare a 0.5% aqueous solution.
【００３３】次に，この含浸用スラリー中に，多孔体と
しての，連通気孔のウレタンフォームを含浸させた。次
いで，このウレタンフォームを絞って余分な含浸用スラ
リーを取り除き，１００℃／３時間乾燥した。両添着Ａ
ＣＦは，太さ１５μｍ，長さ２５μｍ程度であり，秤量
として１００ｇ／ｍ2 のウレタンフォームに担持させ
た。Then, the slurry for impregnation was impregnated with urethane foam having continuous ventilation holes as a porous body. Next, this urethane foam was squeezed to remove excess impregnating slurry and dried at 100 ° C. for 3 hours. Both attachments A
CF had a thickness of about 15 μm and a length of about 25 μm, and was loaded on a urethane foam of 100 g / m 2 as a basis weight.
【００３４】次に，本例の吸着体においては，活性炭素
繊維の微粉砕体に，酸性ガス吸着物としてのＡＰＴＳと
塩基性ガス吸着物としてのＬ−酒石酸とを添着させた，
ＡＰＴＳ添着ＡＣＦ，Ｌ−酒石酸添着ＡＣＦを用いてい
る。ＡＰＴＳ添着ＡＣＦは，成分中のアミノ基の作用に
より酸性ガスを中和反応により化学的に吸着する吸着体
である。一方，Ｌ−酒石酸添着ＡＣＦは，成分中のカル
ボキシル基の作用により塩基性ガスを中和反応により化
学的に吸着する吸着体である。Next, in the adsorbent of the present example, APTS as an acid gas adsorbate and L-tartaric acid as a basic gas adsorbate were impregnated into a finely pulverized body of activated carbon fibers,
APTS-impregnated ACF and L-tartaric acid-impregnated ACF are used. The APTS-impregnated ACF is an adsorbent that chemically adsorbs an acidic gas by a neutralization reaction by the action of an amino group in the component. On the other hand, L-tartaric acid-impregnated ACF is an adsorbent that chemically adsorbs a basic gas by a neutralization reaction by the action of a carboxyl group in the component.
【００３５】また，両添着ＡＣＦとも添着後の比表面積
は１０００ｍ2 ／ｇ程度であって，添着前のＡＣＦの比
表面積が１２００ｍ2 ／ｇ程度であるのに対し，さほど
かわらない。そのため，中性ガスは多孔体の細孔内に捕
獲されて，物理的に吸着される。従って，ＡＰＴＳ添着
ＡＣＦ及びＬ−酒石酸添着ＡＣＦを適宜組み合わせるこ
とにより，酸性，塩基性，中性のあらゆる被吸着ガスに
対し対応可能なマルチ脱臭剤を得ることができる。その
他，本例においても，実施例１と同様の効果を得ること
ができる。The specific surface area of both impregnated ACFs after the impregnation is about 1000 m 2 / g, which is about the same as the specific surface area of the ACF before impregnation is about 1200 m 2 / g. Therefore, the neutral gas is trapped in the pores of the porous body and is physically adsorbed. Therefore, by properly combining the APTS-impregnated ACF and the L-tartaric acid-impregnated ACF, it is possible to obtain a multi-deodorant capable of coping with all adsorbed gases of acidic, basic, and neutral. In addition, also in this example, the same effect as that of the first embodiment can be obtained.
【００３６】実施例３ 本例においては，本発明の吸着体について，ガス吸着率
の経時的変化を測定した。測定にあたっては，初期濃度
（Ｒ）の単成分ガスを充満させた恒温恒湿槽（温度２５
℃，湿度６０％）に，測定用脱臭剤を６０分間保存し
た。測定に供する上記測定用脱臭剤の坪量は，同一（１
００ｇ／ｍ2 ）とした。保存中は，恒温恒湿槽中の単成
分ガスを絶えず循環させる。その間，上記恒温恒湿槽内
に残存する単成分ガスの残存濃度（Ｑ）を，ガスクロマ
トグラフにより測定した。尚，単成分ガスがアンモニア
の場合には，検知管を用いた。Example 3 In this example, the time-dependent change in the gas adsorption rate of the adsorbent of the present invention was measured. For the measurement, the constant temperature and humidity chamber (temperature 25) filled with the initial concentration (R) of the single component gas was used.
The deodorant for measurement was stored at 60 ° C. and 60% humidity for 60 minutes. The grammage of the above deodorant for measurement to be used for measurement is the same (1
00 g / m 2 ). During storage, the single component gas in the constant temperature and humidity chamber is constantly circulated. Meanwhile, the residual concentration (Q) of the single component gas remaining in the constant temperature and humidity chamber was measured by a gas chromatograph. A detector tube was used when the single component gas was ammonia.
【００３７】単成分ガスの除去率（Ｓ）は，以下の式よ
り算出する。 Ｓ（％）＝１００×（Ｒ−Ｑ）／Ｒ 上記各種単成分ガスは，トルエン，硫化水素，アセトア
ルデヒド，アンモニアである。トルエンの初期濃度
（Ｒ）は，１０００ｐｐｍである。硫化水素，アセトア
ルデヒド，及びアンモニアの初期濃度（Ｒ）は，１００
ｐｐｍである。The removal rate (S) of the single component gas is calculated by the following formula. S (%) = 100 × (R−Q) / R The above-mentioned various single component gases are toluene, hydrogen sulfide, acetaldehyde, and ammonia. The initial concentration (R) of toluene is 1000 ppm. The initial concentration (R) of hydrogen sulfide, acetaldehyde, and ammonia is 100.
It is ppm.
【００３８】尚，比較例としては，酸性ガス吸着物及び
塩基性ガス吸着物のいずれも添着していない，粒状活性
炭（未添着），ＡＣＦシート（未添着）を用い，それぞ
れ比較例２，比較例３とした。測定結果を表２に示し
た。表２より，本発明の吸着体は，比較例２，３よりも
著しく初期の吸着性能が優れていること，及び６０分間
経過しても除去率が殆ど変化しないことがわかる。As comparative examples, granular activated carbon (unimpregnated) and ACF sheet (unimpregnated), which are neither impregnated with an acidic gas adsorbate nor a basic gas adsorbate, are used. Example 3 is set. The measurement results are shown in Table 2. From Table 2, it can be seen that the adsorbent of the present invention has significantly superior initial adsorption performance to Comparative Examples 2 and 3, and that the removal rate hardly changes even after 60 minutes.
【００３９】次に，本発明の吸着体について圧力損失を
測定した。その結果，３０ｃｍ／秒の風速で，３ｍｍＡ
ｑ（水柱）であった。また，比較のために，粒状活性炭
に上記ＡＰＴＳ及びＬ−酒石酸を添着させたものを，上
記と同様にしてウレタンフォームに担持させ，複合シー
トを得た。この比較例に係る吸着体と上記本発明にかか
る吸着体との圧力損失を，同坪量にて比較した。その結
果，本発明品は，比較品に対して１００分の１以下の圧
力損失であることが確認された。もちろん，脱臭性能に
ついても，本発明品は比較品と同等以上であることは言
うまでもない。Next, the pressure loss of the adsorbent of the present invention was measured. As a result, at a wind speed of 30 cm / sec, 3 mmA
It was q (column of water). For comparison, granular activated carbon impregnated with the above APTS and L-tartaric acid was loaded on urethane foam in the same manner as above to obtain a composite sheet. The pressure loss between the adsorbent according to this comparative example and the adsorbent according to the present invention was compared at the same basis weight. As a result, it was confirmed that the product of the present invention had a pressure loss of 1/100 or less compared to the comparative product. Needless to say, the deodorant performance of the present invention is equal to or higher than that of the comparative product.
【００４０】このように，本発明品は，添着ＡＦＣの層
内部まで効率良く脱臭に寄与しているため，低い圧力損
失であるにもかかわらず酸性，塩基性，中性のあらゆる
被吸着ガスに対して，吸着速度が速く，他に類をみない
ワンパス脱臭性能を実現するものである。As described above, since the product of the present invention efficiently contributes to deodorization even inside the layer of the impregnated AFC, it can be used for all adsorbed gases of acidic, basic and neutral even though the pressure loss is low. On the other hand, it has a fast adsorption rate and achieves a unique one-pass deodorizing performance.
【００４１】[0041]
【表２】 [Table 2]
【００４２】実施例４ 本例の吸着体は，上記実施例２の吸着体において用いた
ＡＰＴＳの代わりに，γ─アミノプロピルエトキシシラ
ン，ジメチルトリメチルシリルアミン，Ｎ−（２─アミ
ノエチル）─３─アミノプロピルトリメトキシシラン等
の酸性ガス吸着物を用いた。また，実施例２の吸着体に
おいて用いたＬ−酒石酸の代わりに，酸化コバルト，酸
化マンガン，アセチルアセトンコバルト，アセチルアセ
トンマンガン，リンゴ酸，コハク酸等の塩基性ガス吸着
物を用いた。Example 4 In the adsorbent of this example, γ-aminopropylethoxysilane, dimethyltrimethylsilylamine and N- (2-aminoethyl) -3- were used instead of the APTS used in the adsorbent of Example 2 above. An acidic gas adsorbate such as aminopropyltrimethoxysilane was used. Further, instead of L-tartaric acid used in the adsorbent of Example 2, basic gas adsorbates such as cobalt oxide, manganese oxide, acetylacetone cobalt, acetylacetone manganese, malic acid, and succinic acid were used.
【００４３】その他は，実施例２と同様である。本例の
吸着体について，実施例３と同様の測定を行ったとこ
ろ，上記実施例２に係る吸着体と同様の効果を発揮する
ことが確認された。Others are the same as in the second embodiment. The same measurement as in Example 3 was performed on the adsorbent of this example, and it was confirmed that the same effect as that of the adsorbent according to Example 2 was exhibited.
【図１】実施例１の吸着体の製造方法を示す説明図。FIG. 1 is an explanatory view showing a method for manufacturing an adsorbent of Example 1.
【図２】実施例１の，吸着体を充填したタンクの説明
図。FIG. 2 is an explanatory view of a tank filled with an adsorbent according to the first embodiment.
【図３】実施例２の吸着体の製造方法を示す説明図。FIG. 3 is an explanatory view showing a method for manufacturing an adsorbent of Example 2.
１．．．吸着体， ２．．．蒸発燃料処理装置， ３．．．タンク， 1. ． ． Adsorbent, 2. ． ． Evaporative fuel treatment device, 3. ． ． tank,
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ０１Ｄ 53/81 ＺＡＢ 53/40 53/42 Ｂ０１Ｊ 20/28 ＺＡＢ Ａ 7202−4Ｇ Ｂ０１Ｄ 53/34 １１９ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical display location B01D 53/81 ZAB 53/40 53/42 B01J 20/28 ZAB A 7202-4G B01D 53/34 119
Claims (5)
してなることを特徴とする吸着体。1. An adsorbent characterized by being formed by finely pulverizing activated carbon fibers into a granular shape.
着物，塩基性ガス吸着物のいずれか一方又は両方が添着
されていることを特徴とする吸着体。2. An adsorbent characterized in that either one or both of an acidic gas adsorbate and a basic gas adsorbate are attached to a finely pulverized body of activated carbon fibers.
は，３─アミノプロピルトリハイドロシラン，γ─アミ
ノプロピルエトキシシラン，ジメチルトリメチルシリル
アミン，及びＮ−（２−アミノエチル）─３─アミノプ
ロピルトリメトキシシランのグループから選ばれた１又
は２種以上の化合物であることを特徴とする吸着体。3. The acid gas adsorbate according to claim 2, wherein the acidic gas adsorbate is 3-aminopropyltrihydrosilane, γ-aminopropylethoxysilane, dimethyltrimethylsilylamine, and N- (2-aminoethyl) -3-aminopropyl. An adsorbent, which is one or more compounds selected from the group of trimethoxysilane.
物は，Ｌ−酒石酸，酸化コバルト，酸化マンガン，アセ
チルアセトンコバルト，アセチルアセトンマンガン，リ
ンゴ酸，及びコハク酸のグループから選ばれた１又は２
種以上の化合物であることを特徴とする吸着体。4. The adsorbate for basic gas according to claim 2, wherein 1 or 2 selected from the group consisting of L-tartaric acid, cobalt oxide, manganese oxide, acetylacetone cobalt, acetylacetone manganese, malic acid, and succinic acid.
An adsorbent, which is a compound of one or more kinds.
を，多孔体に担持してなることを特徴とする多孔吸着
材。5. A porous adsorbent, comprising a porous body carrying the adsorbent according to claim 2, 3, or 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29388693A JP3334294B2 (en) | 1993-10-28 | 1993-10-28 | Adsorbent and porous adsorbent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29388693A JP3334294B2 (en) | 1993-10-28 | 1993-10-28 | Adsorbent and porous adsorbent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07116510A true JPH07116510A (en) | 1995-05-09 |
| JP3334294B2 JP3334294B2 (en) | 2002-10-15 |
Family
ID=17800429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29388693A Expired - Fee Related JP3334294B2 (en) | 1993-10-28 | 1993-10-28 | Adsorbent and porous adsorbent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3334294B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997029906A1 (en) * | 1996-02-13 | 1997-08-21 | Mega-Carbon Company | Monolithic activated carbon |
| JP2006214403A (en) * | 2005-02-07 | 2006-08-17 | Aisan Ind Co Ltd | Evaporated fuel treating device |
| JP2008055318A (en) * | 2006-08-31 | 2008-03-13 | Osaka Gas Chem Kk | Adsorbent and filter for eliminating siloxane gas |
| JP2010202461A (en) * | 2009-03-04 | 2010-09-16 | Shinshu Univ | Activated carbon excellent in adsorption/desorption capability of organic compound, method for producing the activated carbon, and adsorption/desorption apparatus and method of organic compound |
| CN106226927A (en) * | 2016-08-29 | 2016-12-14 | 贵州晟昌科技有限公司 | A kind of production technology of liquid crystal module |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104556031B (en) * | 2015-01-13 | 2016-10-05 | 华南理工大学 | A kind of mud base spheric active carbon and preparation method and application |
-
1993
- 1993-10-28 JP JP29388693A patent/JP3334294B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997029906A1 (en) * | 1996-02-13 | 1997-08-21 | Mega-Carbon Company | Monolithic activated carbon |
| JP2006214403A (en) * | 2005-02-07 | 2006-08-17 | Aisan Ind Co Ltd | Evaporated fuel treating device |
| JP2008055318A (en) * | 2006-08-31 | 2008-03-13 | Osaka Gas Chem Kk | Adsorbent and filter for eliminating siloxane gas |
| JP2010202461A (en) * | 2009-03-04 | 2010-09-16 | Shinshu Univ | Activated carbon excellent in adsorption/desorption capability of organic compound, method for producing the activated carbon, and adsorption/desorption apparatus and method of organic compound |
| CN106226927A (en) * | 2016-08-29 | 2016-12-14 | 贵州晟昌科技有限公司 | A kind of production technology of liquid crystal module |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3334294B2 (en) | 2002-10-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6093236A (en) | Porous pellet adsorbents fabricated from nanocrystals | |
| JP6807834B2 (en) | Filtration device for air purifiers | |
| JPS5824340A (en) | Filter | |
| US20090211453A1 (en) | Filtration Media for the Removal of Basic Molecular Contaminants for Use in a Clean Environment | |
| JP2007167495A (en) | Aldehyde-containing air purifying agent and its manufacturing method | |
| US7425521B2 (en) | Structured adsorbent media for purifying contaminated air | |
| CN101198395A (en) | Air filtration media comprising metal-doped silicon-based gel materials | |
| CA2550875C (en) | Method and device for decontamination air for fuel cell, and fuel cell | |
| US10179319B2 (en) | Manganese oxide nanoarchitectures for broad-spectrum removal of toxic gases in air-filtration applications | |
| JP3334294B2 (en) | Adsorbent and porous adsorbent | |
| JPH0767948A (en) | Activated carbon granule, deodorant and manufacture of deodorant | |
| JPH0439368B2 (en) | ||
| USRE39098E1 (en) | Porous pellet adsorbents fabricated from nanocrystals | |
| JP3309428B2 (en) | Deodorant and method for producing the same | |
| US8546298B2 (en) | Filtration media having a chemical reagent | |
| JP3269187B2 (en) | Deodorant and method for producing the same | |
| WO2017086177A1 (en) | Composite gas adsorbent member, adsorbent filter in which same is used, and method for manufacturing composite gas adsorbent member | |
| JP2950683B2 (en) | Air purifier and air purifier | |
| JP3430955B2 (en) | Deodorant | |
| US20120121471A1 (en) | Air filtration media comprising metal-doped silicon-based gel materials with pre-reduced oxidizing agents | |
| JP3029764B2 (en) | Deodorant | |
| JPH06196B2 (en) | Air purifier | |
| CN113423485A (en) | Filter medium for depositing nitrogen oxides | |
| JPH0810315A (en) | Air cleaning agent and deodorizing filter using the same for air cleaner | |
| JPH08155240A (en) | Deodorizer and deodorizing filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |