JP3326942B2 - Method for producing hollow activated carbon molded product - Google Patents
Method for producing hollow activated carbon molded productInfo
- Publication number
- JP3326942B2 JP3326942B2 JP34872793A JP34872793A JP3326942B2 JP 3326942 B2 JP3326942 B2 JP 3326942B2 JP 34872793 A JP34872793 A JP 34872793A JP 34872793 A JP34872793 A JP 34872793A JP 3326942 B2 JP3326942 B2 JP 3326942B2
- Authority
- JP
- Japan
- Prior art keywords
- activated carbon
- thermoplastic resin
- molded product
- hollow
- particulate thermoplastic
- 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.)
- Expired - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0022—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof obtained by a chemical conversion or reaction other than those relating to the setting or hardening of cement-like material or to the formation of a sol or a gel, e.g. by carbonising or pyrolysing preformed cellular materials based on polymers, organo-metallic or organo-silicon precursors
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
Description
【０００１】本発明は、耐熱性、耐薬品性、軽量性など
優れた性能を有する材料として現在利用が期待されてい
る中空状活性炭成形物の製造方法に関する。 [0001] The present invention relates to a method for producing a hollow activated carbon molded article which is currently expected to be used as a material having excellent properties such as heat resistance, chemical resistance and light weight .
【０００２】[0002]
【従来の技術とその課題】中空状炭素成形物の製造方法
には、熱可塑性有機高分子材料、石油ピッチなどの瀝青
物原料に低沸点溶剤などの膨張剤を均一に混合した後、
適当な粒径の粉粒体とし、次いで加熱炭化する方法（例
えば、特公昭４９−３０２５３号公報、特公昭６１−１
４１１０号公報、特開昭６１−８３２３９号公報参照）
や、熱可塑性樹脂等の芯材を高沸点の物質で被覆して多
層構造の球体とした後、加熱炭化する方法（例えば、特
公昭５０−２９８３７号公報参照）などが知られてい
る。2. Description of the Related Art A method for producing a hollow carbon molded product includes a method of uniformly mixing an expanding agent such as a low boiling point solvent with a bituminous material such as a thermoplastic organic polymer material and petroleum pitch.
A method of forming a powder having an appropriate particle size and then heating and carbonizing (for example, JP-B-49-30253, JP-B-61-1)
No. 4110, JP-A-61-83239)
Alternatively, a method is known in which a core material such as a thermoplastic resin is coated with a substance having a high boiling point to form a sphere having a multilayer structure, and then heated and carbonized (for example, see Japanese Patent Publication No. 50-29837).
【０００３】これら製造方法にあって、膨張剤を使用す
る方法には、それぞれの原料に適合した膨張剤の選出、
有機溶剤類の取扱い、膨張剤含有粒子の調整方法、更に
は、熱処理時の条件設定や取扱いなど難しい点が多く、
また、多層構造を経る方法には、比較的粒径の大きい中
空体しか得られないという欠点がある。加えて、これら
いずれの方法においても、炭素体が活性炭であるもの、
即ち、中空状活性炭成形物とするには、更に、活性炭機
能を発揮するものとするための技術付加をしなければな
らない。中空部から外界への連通気孔を十分に有するも
のとするのも、その一つである。[0003] In these production methods, methods using an expanding agent include selecting an expanding agent suitable for each raw material,
There are many difficult points such as the handling of organic solvents, the method of adjusting the expanding agent-containing particles, and the setting and handling of heat treatment conditions.
Further, the method using the multilayer structure has a disadvantage that only a hollow body having a relatively large particle size can be obtained. In addition, in any of these methods, the carbon body is activated carbon,
That is, in order to form a hollow activated carbon molded product, it is necessary to add a technique for exhibiting the activated carbon function. One of them is to have a sufficient continuous ventilation hole from the hollow portion to the outside.
【０００４】そこで、本発明者は、種々の粒子径の中空
状活性炭成形物を非常に簡便なプロセスにより製造する
方法について、先に一つの提案をした（特開平５−３０
１７８４号公報参照）。粒子状熱可塑性樹脂と活性炭粉
末とを使用し、粒子状熱可塑性樹脂を活性炭粉末中に配
置した後、この粒子状熱可塑性樹脂を溶融・炭化させる
熱処理を施すことにより中空状活性炭成形物を製造する
というものである。この製法は、比較的壁厚が薄くて中
空部の大きなものを製造するのに適した方法ではある
が、この製法によれば、中空部から外界への連通気孔を
十分に有するなど活性炭機能を十分に発揮する中空状活
性炭成形物を容易に得られる。ここで、単なる活性炭粉
末の集合粒子状物ではなく中空状の成形物になるのは、
溶融した粒子状熱可塑性樹脂に活性炭粉末が入り込んで
いくのではなく、溶融した粒子状熱可塑性樹脂が活性炭
粉末（集合物）相互の隙間に浸透していくことによると
推察している。The inventor of the present invention has previously proposed one method for producing hollow activated carbon molded articles having various particle diameters by a very simple process (Japanese Patent Laid-Open No. 5-30).
No. 1784). Using a particulate thermoplastic resin and activated carbon powder, after arranging the particulate thermoplastic resin in the activated carbon powder, performing a heat treatment for melting and carbonizing the particulate thermoplastic resin to produce a hollow activated carbon molded product It is to do. This method is a method suitable for manufacturing a product having a relatively thin wall and a large hollow portion, but according to this method, the activated carbon function is sufficiently provided, such as having a sufficient continuous vent from the hollow portion to the outside. A hollow activated carbon molded product that exhibits a sufficient performance can be easily obtained. Here, it is not a mere activated carbon powder aggregated particle but a hollow molded product,
It is speculated that the activated carbon powder does not enter the molten particulate thermoplastic resin, but the molten particulate thermoplastic resin permeates into the gaps between the activated carbon powders (aggregates).
【０００５】本発明は、上記提案を更に発展させたもの
である。即ち、活性炭機能、取扱い性、強度、いずれの
面においても、中空状活性炭成形物として好ましいもの
を得ることのできる一つの製法を提供せんとするもので
ある。 The present invention is an extension of the above proposal. That is, in all aspects of the activated carbon function, handleability and strength, those which are preferable as hollow activated carbon molded products
To provide one manufacturing method that can obtain
is there.
【０００６】本発明は、粒子状熱可塑性樹脂と活性炭粉
末とを使用し、前記粒子状熱可塑性樹脂を活性炭粉末中
に配置させた後、粒子状熱可塑性樹脂を溶融・炭化させ
ることにより、粒子状熱可塑性樹脂の炭化物と活性炭粉
末との混合結合化物よりなり中空部から外界への連通気
孔を有し、成形物の外径に対する内径の比率が０．５〜
０．８、嵩密度が０．１〜０．３ｇ／ｃｍ 3 、比表面積
が６００ｍ 2 ／ｇ以上である中空状活性炭成形物を製造
するにあたり、前記熱処理のうち、粒子状熱可塑性樹脂
の溶融温度領域にあっては前記粒子状熱可塑性樹脂と活
性炭粉末とを回転させながら行うことを特徴とする中空
状活性炭成形物の製造方法を要旨とする。 [0006] The present invention relates to a particulate thermoplastic resin and activated carbon powder.
Using the powder, the particulate thermoplastic resin in the activated carbon powder
After being placed in the
By doing so, the carbide of the particulate thermoplastic resin and the activated carbon powder
Combined with the powder and connected to the outside from the hollow
With a hole, the ratio of the inner diameter to the outer diameter of the molded product is 0.5 to
0.8, bulk density 0.1-0.3 g / cm 3 , specific surface area
Of hollow activated carbon moldings with a particle size of 600 m 2 / g or more
In doing so, of the heat treatment, the particulate thermoplastic resin
In the melting temperature range of the above, the particulate thermoplastic resin and the active
Hollow, characterized in that it is carried out while rotating the charcoal powder
The gist is a method for producing a shaped activated carbon article.
【０００７】本発明で使用する活性炭粉末としては、原
材料や製造方法などによらず、得ようとする中空状活性
炭成形物の用途や粒子状熱可塑性樹脂の粒径を考慮し
て、性状や粒径を適宜選択すればよい。また、完全な不
定形であるとか繊維的形状を有するとかの形状面におい
ても適宜である。使用する活性炭粉末の比表面積が大き
い程得られる中空状活性炭成形物の比表面積も大きくな
る。尚、薬品賦活炭はガス賦活炭に比べて不純物の含有
量が多いことがあり、この不純物があまりに多いと中空
状活性炭成形物の形成を阻害することもあるので、必要
に応じて予め塩酸等の無機酸で洗浄処理して不純物を除
去しておくのもよい。また、この活性炭粉末中に粒子状
熱可塑性樹脂を配置させるために、粒子状熱可塑性樹脂
の周りに得ようとする中空状活性炭成形物の壁厚以上の
厚さに活性炭粉末が存在するように分散混合させるが、
この時、粒子状熱可塑性樹脂の少なくとも３倍量（体積
比）以上の活性炭粉末を使用することが好ましい。更
に、活性炭とともに、あるいはまた、粒子状熱可塑性樹
脂とともに、金、銀、銅、酸化チタン、酸化亜鉛、ゼオ
ライトなど他の材料を適宜併用することもできる。[0007] The activated carbon powder used in the present invention has properties and particle sizes in consideration of the intended use of the hollow activated carbon molded product and the particle size of the particulate thermoplastic resin irrespective of the raw materials and the production method. The diameter may be appropriately selected. It is also appropriate in terms of a shape such as a completely amorphous shape or a fibrous shape. The larger the specific surface area of the activated carbon powder used, the larger the specific surface area of the obtained hollow activated carbon molded product. Incidentally, the chemical activated carbon sometimes has a higher content of impurities than the gas activated carbon, and if this impurity is too much, it may hinder the formation of a hollow activated carbon molded product. It is also possible to remove impurities by washing with an inorganic acid. Further, in order to arrange the particulate thermoplastic resin in the activated carbon powder, the activated carbon powder is present at a thickness equal to or greater than the wall thickness of the hollow activated carbon molded product to be obtained around the particulate thermoplastic resin. Disperse and mix,
At this time, it is preferable to use activated carbon powder at least three times the volume (volume ratio) of the particulate thermoplastic resin. Further, other materials such as gold, silver, copper, titanium oxide, zinc oxide, and zeolite may be appropriately used together with the activated carbon or the particulate thermoplastic resin.
【０００８】粒子状熱可塑性樹脂としては、例えば、ポ
リエチレン、ポリプロピレン、ポリスチレン、ナイロ
ン、ポリ塩化ビニル、ポリ酢酸ビニルとかこれらの混合
物など種々のものを挙げられる。比較的小径のものを得
ようとするときには熱処理による炭素収率も比較的小さ
くするのが好ましい。即ち、粒子状熱可塑性樹脂の粒径
は、活性炭粉末の粒径に対して５倍以上あることが好ま
しいけれど、活性炭粉末自体非常に小さなものを選択で
きるので十分に小さなものを選択でき、得られる中空状
活性炭成形物も非常に小さなものとすることができる
が、このとき、なるべく空洞状の中空部を確保するには
炭素収率があまり大きくない方が好ましい。また、比較
的大径のものを得ようとするときには熱処理による炭素
収率も比較的大きくするのが好ましい。即ち、大きな粒
子状熱可塑性樹脂を使用することによって大きな中空状
活性炭成形物を得ることができるが、このとき、炭素収
率が小さいと中空状活性炭成形物の形状を安定させるの
がそれだけ難しくなる。尚、概ねは、炭素収率を１〜１
０％程度とするとよい。例えば、ポリエチレン、ポリプ
ロピレン、ポリスチレン、ナイロンなどは、酸化性雰囲
気による不融化処理、次いで非酸化性雰囲気による炭化
処理を施すことによって、また、ポリ塩化ビニルやポリ
酢酸ビニルなどは、酸化性雰囲気による不融化処理を施
さずに非酸化性雰囲気による熱処理を施すことによっ
て、それぞれ容易に炭素収率を１〜１０％程度にでき
る。また、ポリエチレンは数μｍ〜１０００μｍを越え
る種々の粒径の真球状物や粒状物が市販品として揃って
おり、得ようとする中空状活性炭成形物の大きさの設定
が簡単である。[0008] Examples of the particulate thermoplastic resin include various resins such as polyethylene, polypropylene, polystyrene, nylon, polyvinyl chloride, polyvinyl acetate and mixtures thereof. When a relatively small diameter is to be obtained, it is preferable that the carbon yield by heat treatment is also relatively small. That is, the particle size of the particulate thermoplastic resin is preferably at least 5 times the particle size of the activated carbon powder, but the activated carbon powder itself can be selected to be very small, so that a sufficiently small one can be selected and obtained. The hollow activated carbon molded product can be made very small, but at this time, it is preferable that the carbon yield is not so large in order to secure a hollow hollow portion as much as possible. When a relatively large diameter is to be obtained, it is preferable that the carbon yield by heat treatment is also relatively large. That is, a large hollow activated carbon molded product can be obtained by using a large particulate thermoplastic resin, but at this time, it is more difficult to stabilize the shape of the hollow activated carbon molded product when the carbon yield is small. . In addition, generally, the carbon yield is 1 to 1
It is good to be about 0%. For example, polyethylene, polypropylene, polystyrene, nylon, etc. are subjected to infusibilization treatment in an oxidizing atmosphere and then to carbonization treatment in a non-oxidizing atmosphere, and polyvinyl chloride, polyvinyl acetate, etc. are treated in an oxidizing atmosphere. By performing the heat treatment in a non-oxidizing atmosphere without performing the fusion treatment, the carbon yield can be easily reduced to about 1 to 10%. In addition, as polyethylene, spherical and granular products having various particle diameters exceeding several μm to 1000 μm are available as commercial products, and the size of the hollow activated carbon molded product to be obtained can be easily set.
【０００９】熱処理は、前述したように粒子状熱可塑性
樹脂の種類に応じて適宜行なえばよい。例えば、空気、
酸素等の酸化性雰囲気で室温から２５０〜３５０℃まで
昇温して不融化処理を施した後、窒素、アルゴン等の不
活性ガス中や真空中等の非酸化性雰囲気で粒子状熱可塑
性樹脂が炭化する温度まで処理を施したり、酸化性雰囲
気による不融化処理を施さずに、直接、非酸化性雰囲気
による焼成処理を施したりする。The heat treatment may be appropriately performed according to the type of the particulate thermoplastic resin as described above. For example, air,
After raising the temperature from room temperature to 250 to 350 ° C. in an oxidizing atmosphere such as oxygen to perform infusibilization treatment, the particulate thermoplastic resin is removed in a non-oxidizing atmosphere such as an inert gas such as nitrogen or argon or in a vacuum. A baking treatment in a non-oxidizing atmosphere is performed directly without performing a treatment up to a carbonizing temperature or performing an infusibilizing treatment in an oxidizing atmosphere.
【００１０】この熱処理のうち、粒子状熱可塑性樹脂の
溶融温度領域にあっては粒子状熱可塑性樹脂と活性炭粉
末とを回転させながら行う。簡単には、材料を収容した
容器自体を回転して加熱すればよい。例えば、粒子状熱
可塑性樹脂と活性炭粉末とをロ−タリ−キルン等の回転
炉に収容し、回転させながら熱処理を行えばよい。ここ
で、回転炉の回転数、処理温度、処理時間等は適宜設定
すればよいが、まず回転数については、あまりに小さい
と材料が回転炉内で平行移動するだけになることもあ
り、また、逆に大き過ぎると付着した活性炭粉末粒子が
離脱する恐れがあるので、一般的な回転炉の場合には、
１回転／分以上〜１０回転／分以下程度とするのがよ
い。また、処理温度については、得る中空状活性炭成形
物の壁厚を厚くしようとするならば、粒子状熱可塑性樹
脂の分解温度より低い範囲で、できるだけ高い溶融温度
領域を採用するのがよい。例えば、粒子状熱可塑性樹脂
としてポリエチレンを使用するならば約２５０〜３００
℃程度が好ましい。更に、処理時間については、処理温
度との関係で設定するのがよく、処理温度が高い場合に
は短くてもよいが、処理温度が比較的低い場合には長く
した方がよい。In the heat treatment, in the melting temperature range of the particulate thermoplastic resin, the heat treatment is performed while rotating the particulate thermoplastic resin and the activated carbon powder. In brief, it is sufficient to rotate and heat the container itself containing the material. For example, the heat treatment may be performed while the particulate thermoplastic resin and the activated carbon powder are accommodated in a rotary kiln such as a rotary kiln and rotated. Here, the number of rotations of the rotary furnace, the processing temperature, the processing time, etc. may be set as appropriate, but first, regarding the number of rotations, if it is too low, the material may only be translated in the rotary furnace, Conversely, if it is too large, the activated carbon powder particles attached may be detached, so in the case of a general rotary furnace,
The rotation speed is preferably from about 1 rotation / minute to about 10 rotations / minute. Regarding the treatment temperature, if it is desired to increase the wall thickness of the obtained hollow activated carbon molded product, it is preferable to adopt a melting temperature range as high as possible within a range lower than the decomposition temperature of the particulate thermoplastic resin. For example, if polyethylene is used as the particulate thermoplastic resin, about 250 to 300
C. is preferred. Further, the processing time is preferably set in relation to the processing temperature. The processing time may be shorter when the processing temperature is higher, but may be longer when the processing temperature is relatively lower.
【００１１】粒子状熱可塑性樹脂は溶融温度領域におけ
る空気との接触で十分に不融化されていれば、その後、
非酸化性雰囲気による焼成処理を施すことができるが、
回転炉内での空気との接触が不十分で不融化処理が不完
全であれば、焼成処理を施す前に改めて酸化性雰囲気に
よる不融化処理を施す。この時、材料は回転させる必要
はなく静置のままでよい。不融化処理を施した後、非酸
化性雰囲気による焼成処理を施すが、最高温度は概ね数
百℃程度で十分である。また、必要に応じて賦活処理を
施してもよい。熱処理後、余剰の活性炭粉末をふるいな
どで除去して、中空状活性炭成形物を得る。中空状活性
炭成形物の粒径は数μｍといった小さなものでも自由に
得ることができるが、あまりに小さいと粉末活性炭と差
がなくなり、また、中空部分の利用も困難になるため少
なくとも０．１ｍｍ以上が好ましい。逆に、あまりに大
きいと単位重量当たりの有効面積を小さくしかねない。
特に、本発明の要旨における各値を満足させる上では、
５ｍｍ程度までに抑えるのが好ましい。If the particulate thermoplastic resin is sufficiently infusibilized by contact with air in the melting temperature range, then
Although firing treatment in a non-oxidizing atmosphere can be performed,
If the contact with air in the rotary furnace is insufficient and the infusibilization treatment is incomplete, the infusibilization treatment in an oxidizing atmosphere is performed again before the baking treatment. At this time, the material does not need to be rotated and may be allowed to stand still. After the infusibilization treatment, a baking treatment in a non-oxidizing atmosphere is performed, but the maximum temperature is approximately several hundred degrees Celsius. Further, an activation treatment may be performed as necessary. After the heat treatment, excess activated carbon powder is removed by a sieve or the like to obtain a hollow activated carbon molded product. The particle size of the hollow activated carbon molded product can be freely obtained even if it is as small as several μm, but if it is too small, there is no difference from powdered activated carbon, and it becomes difficult to use the hollow part, so at least 0.1 mm or more is required. preferable. Conversely, if it is too large, the effective area per unit weight may be reduced.
In particular, in satisfying each value in the gist of the present invention,
It is preferable to keep it to about 5 mm.
【００１２】中空状活性炭成形物の中空部分に他物質を
充填したり微生物等を固定したりすることで性能の向上
あるいは他機能の付加を図ることもできる。例えば、農
薬や殺虫剤などを充填すれば、それらは外側の活性炭に
一度吸着されてから徐々に放出されるため、長期間効果
を持続できる徐放性農薬や徐放性殺虫剤となり得る。芳
香剤などの揮散性物質を充填すればそれらの揮散性を長
期間持続させることができる。また例えば、溶融粒子状
熱可塑性樹脂の炭化物と活性炭粉末とよりなる外殻部分
に微生物を中空部分に容易に侵入させ得る数μｍ程度の
孔を存在させることにより、中空部分を微生物の増殖空
間として利用する、即ち、微生物培養基材として利用す
ることも可能である。しかも、活性炭との組み合わせを
考慮して固定する微生物を選択すれば、微生物坦持活性
炭として、廃水等に対し物理化学的処理と生物学的処理
の両機能を兼ね備えるものともできる。尚、中空部分へ
の他物質の充填や微生物固定などは、充填物質を含む溶
液や微生物を含む培養液などの中に中空状活性炭成形物
を浸漬するなどすればよい。By filling the hollow portion of the hollow activated carbon molded product with another substance or fixing microorganisms or the like, the performance can be improved or other functions can be added. For example, when filled with pesticides, pesticides, etc., since they are once adsorbed on the outer activated carbon and then gradually released, they can be sustained-release pesticides or pesticides that can maintain their effects for a long period of time. If a volatile substance such as an aromatic is filled, the volatility can be maintained for a long time. Also, for example, by providing a hole of about several μm that allows microorganisms to easily penetrate into the hollow portion in the outer shell portion made of carbide of the molten particulate thermoplastic resin and activated carbon powder, the hollow portion serves as a growth space for microorganisms. It can also be used, that is, used as a microorganism culture substrate. Moreover, if the microorganisms to be fixed are selected in consideration of the combination with the activated carbon, the microorganisms can be used as the activated carbon having both functions of physicochemical treatment and biological treatment for wastewater and the like. The hollow portion may be filled with another substance or fixed with microorganisms by immersing the hollow activated carbon molded article in a solution containing the filling substance, a culture solution containing microorganisms, or the like.
【００１３】[0013]
【実施例】〈実施例１〉 フロ−ビ−ズＣＬ−１２００７（住友精化（株）製の真
球状ポリエチレン：粒度範囲６００〜１２００μｍ、融
点１０７℃）を３倍量のダイアソ−ブＦ１００（三菱化
成工業（株）製の粉末活性炭：粒径１００メッシュ以
下、比表面積８００〜１２００ｍ 2 ／ｇ）中に配置し、
それを処理温度３００℃、回転数２回転／分の条件のロ
−タリ−キルン内に入れ１０分間の処理を施した。次
に、ロ−タリ−キルンから取り出した材料を容器に移
し、空気中で室温から２５０℃まで２℃／分程度の速度
で昇温させて２５０℃で１時間保持する不融化処理を施
した。その後、窒素雰囲気中で６００℃、１時間の処理
を施し、熱処理終了後、余剰の活性炭粉末をふるいで除
去して、外径１．２〜２ｍｍの真球状の中空状活性炭成
形物を得た。EXAMPLES Example 1 Flow beads CL-12007 (Spherical polyethylene manufactured by Sumitomo Seika Co., Ltd .: particle size range: 600 to 1200 μm, melting point: 107 ° C.) was added to a three-fold amount of Diasorb F100 ( Activated carbon powder manufactured by Mitsubishi Chemical Industry Co., Ltd .: placed in a particle size of 100 mesh or less, specific surface area of 800 to 1200 m 2 / g ),
It was placed in a rotary kiln at a processing temperature of 300 ° C. and a rotation speed of 2 revolutions / minute and subjected to a treatment for 10 minutes. Next, the material taken out of the rotary kiln was transferred to a container and subjected to an infusibilization treatment in which the temperature was raised from room temperature to 250 ° C. at a rate of about 2 ° C./min in air and maintained at 250 ° C. for 1 hour. . Thereafter, a treatment was performed at 600 ° C. for 1 hour in a nitrogen atmosphere, and after the heat treatment, excess activated carbon powder was removed by sieving to obtain a true spherical hollow activated carbon molded product having an outer diameter of 1.2 to 2 mm. .
【００１４】〈実施例２〉実施例１において、フロ−ビ
−ズＣＬ−１２００７をフロ−ビ−ズＣＬ−５００７
（住友精化（株）製の真球状ポリエチレン：粒度範囲２
００〜５００μｍ、融点１０７℃）に代えた以外、すべ
て実施例１と同様にして、外径０．４〜０．９ｍｍの真
球状の中空状活性炭成形物を得た。<Embodiment 2> In Embodiment 1, Flow beads CL-12007 is replaced with Flow beads CL-5007.
(Spherical polyethylene manufactured by Sumitomo Seika Co., Ltd .: Particle size range 2
Except that the temperature was changed to 100 to 500 μm and the melting point was 107 ° C.), a completely spherical hollow activated carbon molded product having an outer diameter of 0.4 to 0.9 mm was obtained in the same manner as in Example 1.
【００１５】〈実施例３〉実施例１において、フロ−ビ
−ズＣＬ−１２００７を東レＡＱ−ナイロンＰ−７０
（東レ（株）製の直方体状水溶性ナイロンペレット：縦
横各約３ｍｍ、高さ約２ｍｍ、融点１１８℃）に代え、
また、ロ−タリ−キルンの処理温度を２５０℃に、回転
数を３回転／分に、処理時間を２０分に変えた以外、す
べて実施例１と同様にして縦横各約４ｍｍ、高さ約２．
５ｍｍのほぼ直方体状の中空状活性炭成形物を得た。<Embodiment 3> In Embodiment 1, flow beads CL-12007 were replaced by Toray AQ-nylon P-70.
(Toray Co., Ltd., rectangular parallelepiped water-soluble nylon pellets: about 3 mm in length and width, about 2 mm in height, melting point 118 ° C.)
Further, except that the processing temperature of the rotary kiln was changed to 250 ° C., the number of rotations was changed to 3 rotations / minute, and the processing time was changed to 20 minutes, the length and width were each about 4 mm and the height was about the same as in Example 1. 2.
An approximately rectangular parallelepiped hollow activated carbon molded product of 5 mm was obtained.
【００１６】〈実施例４〉実施例１において、フロ−ビ
−ズＣＬ−１２００７をＵＢＥ：Ｌ５１９（宇部興産
（株）製の円柱体状ポリエチレンペレット：直径約３．
５ｍｍ、高さ約２ｍｍ、融点１０４℃）に代え、また、
ロ−タリ−キルンの回転数を３回転／分に、処理時間を
２０分に変えた以外、すべて実施例１と同様にして直径
約５ｍｍ、高さ約３ｍｍのほぼ円柱体状の中空状活性炭
成形物を得た。<Example 4> In Example 1, flow beads CL-12007 were prepared by using UBE: L519 (a cylindrical polyethylene pellet manufactured by Ube Industries, Ltd.) having a diameter of about 3.
5mm, height about 2mm, melting point 104 ° C)
A substantially cylindrical hollow activated carbon having a diameter of about 5 mm and a height of about 3 mm in the same manner as in Example 1 except that the rotation speed of the rotary kiln was changed to 3 rotations / minute and the processing time was changed to 20 minutes. A molded product was obtained.
【００１７】〈実施例５〉 実施例１において、ダイアソ−ブＦ１００をクラレコ−
ルＰＫ３０（クラレケミカル（株）製の粉末活性炭：粒
径３０メッシュ以下、比表面積８００〜１２００ｍ 2 ／
ｇ）に代えた以外、すべて実施例１と同様にして、外径
１．２〜２．２ｍｍの真球状の中空状活性炭成形物を得
た。<Embodiment 5> In Embodiment 1, the Diasorb F100 was replaced by Kuraray Co., Ltd.
PK30 (powder activated carbon manufactured by Kuraray Chemical Co., Ltd .: particle size of 30 mesh or less, specific surface area of 800 to 1200 m 2 /
Except for changing to g ), a spherical hollow activated carbon molded article having an outer diameter of 1.2 to 2.2 mm was obtained in the same manner as in Example 1.
【００１８】〈比較例１〉実施例１において、フロ−ビ
−ズＣＬ−１２００７を配置したダイアソ−ブＦ１００
を、回転させずに空気中で室温から３００℃まで２℃／
分程度の速度で昇温させて３００℃で１時間保持する不
融化処理を施した以外、すべて実施例１と同様にして、
外径０．９〜１．４ｍｍの真球状の中空状活性炭成形物
を得た。<Comparative Example 1> In Example 1, Diasorb F100 in which flow beads CL-12007 was arranged was used.
In air without rotation from room temperature to 300 ° C. at 2 ° C. /
Except for performing the infusibilization treatment of raising the temperature at a speed of about one minute and maintaining the temperature at 300 ° C. for one hour,
A true spherical hollow activated carbon molded product having an outer diameter of 0.9 to 1.4 mm was obtained.
【００１９】〈比較例２〉比較例１において、フロ−ビ
−ズＣＬ−１２００７をＵＢＥ：Ｌ５１９に代えた以
外、すべて比較例１と同様にして、直径約４ｍｍ、高さ
約２．５ｍｍのほぼ円柱体状の中空状活性炭成形物を得
た。<Comparative Example 2> In Comparative Example 1, except that the flow beads CL-12007 was replaced with UBE: L519, the same procedure as in Comparative Example 1 was carried out except that the diameter was about 4 mm and the height was about 2.5 mm. A substantially cylindrical hollow activated carbon molded product was obtained.
【００２０】以上、各例で得たものについての評価結果
を表１に示す。（Ｙ／Ｘ）は、成形物の外径（Ｘ）に対
する内径（Ｙ）の比率を示す。それぞれ１０粒づつの測
定値の平均値を示したものである。また、嵩密度はメス
シリンダ−法（単位：ｇ／ｃｍ 3 ）、比表面積はＢＥＴ
法（単位：ｍ 2 ／ｇ）によりそれぞれ測定し、強度は手
指で潰した時の潰れ数を評価した。◎：潰れ率１０％未
満、○：潰れ率１０％以上〜３０％未満、△：潰れ率３
０％以上〜５０％未満、×：潰れ率５０％以上である。Table 1 shows the results of the evaluation of the results obtained in each example. (Y / X) indicates the ratio of the inner diameter (Y) to the outer diameter (X) of the molded product. It shows the average value of the measured values of 10 grains each. The bulk density is measured by the graduated cylinder method (unit: g / cm 3 ), and the specific surface area is BET.
Each was measured by a method (unit: m 2 / g ), and the strength was evaluated by the number of crushing when crushing with a finger. ◎: Crush rate of less than 10%, ：: Crush rate of 10% or more to less than 30%, Δ: Crush rate of 3
0% or more and less than 50%, x: The crushing rate is 50% or more.
【００２１】[0021]
【表１】 [Table 1]
【００２２】[0022]
【発明の効果】本発明の中空活性炭成形物の製造方法
は、溶融した粒子状熱可塑性樹脂と活性炭粉末粒子との
接触機会が増し、より多く均一に活性炭粉末粒子が溶融
した粒子状熱可塑性樹脂の表面に貼着されるようになる
ためであろうが、十分量の活性炭を有しながら外部から
中空部へのガス導入・拡散が迅速で内部の活性炭も十分
に機能するなど活性炭機能に優れ、また、十分な強度も
有し、更に、他物質を充填したり微生物を固定したりす
るのに十分有効な利用空間を内部に有する中空状活性炭
成形物も容易に得ることができる。 The method for producing the hollow activated carbon molded product of the present invention.
Of the molten particulate thermoplastic resin and the activated carbon powder particles
More chances of contact and more uniform melting of activated carbon powder particles
To be adhered to the surface of the granular thermoplastic resin
This is because while having a sufficient amount of activated carbon,
Quick gas introduction / diffusion into hollow area and sufficient activated carbon inside
Excellent activated carbon function, such as functioning, and also has sufficient strength
To fill other substances or fix microorganisms
Activated carbon with a space inside that is effective enough to
Molded products can also be easily obtained.
Claims (1)
用し、前記粒子状熱可塑性樹脂を活性炭粉末中に配置さ
せた後、粒子状熱可塑性樹脂を溶融・炭化させることに
より、粒子状熱可塑性樹脂の炭化物と活性炭粉末との混
合結合化物よりなり中空部から外界への連通気孔を有
し、成形物の外径に対する内径の比率が０．５〜０．
８、嵩密度が０．１〜０．３ｇ／ｃｍ 3 、比表面積が６
００ｍ 2 ／ｇ以上である中空状活性炭成形物を製造する
にあたり、前記熱処理のうち、粒子状熱可塑性樹脂の溶
融温度領域にあっては前記粒子状熱可塑性樹脂と活性炭
粉末とを回転させながら行うことを特徴とする中空状活
性炭成形物の製造方法。[Claim 1] using a particulate thermoplastic resin and activated carbon powder after the particulate thermoplastic resin is disposed in the activated carbon powder, by melting and carbonization of particulate thermoplastic resin, particulate heat Mixing of charcoal of thermoplastic resin with activated carbon powder
Combined and has a continuous vent from the hollow to the outside
The ratio of the inner diameter to the outer diameter of the molded product is 0.5 to 0.1.
8. Bulk density of 0.1 to 0.3 g / cm 3 , specific surface area of 6
In the production of the hollow activated carbon molded product of not less than 00 m 2 / g , the heat treatment is performed while rotating the particulate thermoplastic resin and the activated carbon powder in the melting temperature range of the particulate thermoplastic resin. A method for producing a hollow activated carbon molded product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34872793A JP3326942B2 (en) | 1993-12-27 | 1993-12-27 | Method for producing hollow activated carbon molded product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34872793A JP3326942B2 (en) | 1993-12-27 | 1993-12-27 | Method for producing hollow activated carbon molded product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07187849A JPH07187849A (en) | 1995-07-25 |
| JP3326942B2 true JP3326942B2 (en) | 2002-09-24 |
Family
ID=18398961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34872793A Expired - Fee Related JP3326942B2 (en) | 1993-12-27 | 1993-12-27 | Method for producing hollow activated carbon molded product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3326942B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5062593B2 (en) | 2007-12-03 | 2012-10-31 | 独立行政法人産業技術総合研究所 | Carbon fine particles using lignin as raw material and method for producing the same |
| JP5288408B2 (en) | 2009-01-22 | 2013-09-11 | 独立行政法人産業技術総合研究所 | Hollow carbon fine particles and method for producing the same |
| JP5405438B2 (en) * | 2010-11-05 | 2014-02-05 | 株式会社ノリタケカンパニーリミテド | Method for producing porous carbon particles and porous carbon material comprising the particles |
| JP2019107284A (en) * | 2017-12-19 | 2019-07-04 | 株式会社大木工藝 | Accessory |
| US20220055907A1 (en) | 2018-09-14 | 2022-02-24 | Nippon Shokubai Co., Ltd. | Carbon matter-containing material production method, carbon matter-containing material, and soluble organic-inorganic composite |
| JP7454352B2 (en) * | 2019-10-16 | 2024-03-22 | 株式会社日本触媒 | Method for manufacturing carbon material-containing material |
-
1993
- 1993-12-27 JP JP34872793A patent/JP3326942B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07187849A (en) | 1995-07-25 |
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