JPH05262511A - Granulated activated carbon - Google Patents
Granulated activated carbonInfo
- Publication number
- JPH05262511A JPH05262511A JP4090082A JP9008292A JPH05262511A JP H05262511 A JPH05262511 A JP H05262511A JP 4090082 A JP4090082 A JP 4090082A JP 9008292 A JP9008292 A JP 9008292A JP H05262511 A JPH05262511 A JP H05262511A
- Authority
- JP
- Japan
- Prior art keywords
- activated carbon
- solid powder
- binder
- granulated
- carbon
- 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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 129
- 239000002245 particle Substances 0.000 claims abstract description 43
- 239000000843 powder Substances 0.000 claims abstract description 28
- 239000007787 solid Substances 0.000 claims abstract description 25
- 239000011230 binding agent Substances 0.000 claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 239000003245 coal Substances 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 15
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 abstract description 2
- 239000000919 ceramic Substances 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 229910044991 metal oxide Inorganic materials 0.000 abstract 1
- 150000004706 metal oxides Chemical class 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 description 19
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 18
- 239000000047 product Substances 0.000 description 14
- 239000000654 additive Substances 0.000 description 9
- 230000000996 additive effect Effects 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- 230000005484 gravity Effects 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 4
- 238000005469 granulation Methods 0.000 description 4
- 230000003179 granulation Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 235000013162 Cocos nucifera Nutrition 0.000 description 3
- 244000060011 Cocos nucifera Species 0.000 description 3
- 239000003463 adsorbent Substances 0.000 description 3
- 238000011001 backwashing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- -1 sulfone compound Chemical class 0.000 description 3
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 239000010431 corundum Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000010903 husk Substances 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- NVVZQXQBYZPMLJ-UHFFFAOYSA-N formaldehyde;naphthalene-1-sulfonic acid Chemical compound O=C.C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 NVVZQXQBYZPMLJ-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 235000013980 iron oxide Nutrition 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-M naphthalene-1-sulfonate Chemical compound C1=CC=C2C(S(=O)(=O)[O-])=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-M 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- HIEHAIZHJZLEPQ-UHFFFAOYSA-M sodium;naphthalene-1-sulfonate Chemical compound [Na+].C1=CC=C2C(S(=O)(=O)[O-])=CC=CC2=C1 HIEHAIZHJZLEPQ-UHFFFAOYSA-M 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は活性炭に係り、特に吸着
材又は担体としての使用に適した造粒活性炭に関する。FIELD OF THE INVENTION The present invention relates to activated carbon, and more particularly to granulated activated carbon suitable for use as an adsorbent or carrier.
【０００２】[0002]
【従来の技術】活性炭はその優れた吸着性能により、ガ
ス処理、液体処理において吸着剤又は担体として広く利
用されている。特に、処理性能、再生利用性、廃棄物対
策の容易性ならびにハンドリングの容易性等から粉末活
性炭を造粒して用いる造粒活性炭の需要が高まってい
る。従来、造粒活性炭は、粉末活性炭に有機系結合剤及
び／又は無機系結合剤を添加し、成形、賦活化等の処理
により製造されている。例えば、特開昭６２−５２１１
６号公報には、結合剤としてナフタレンスルホン酸ソー
ダのホルマリン縮合物などの有機スルホン化合物の水溶
液を混合して成形後、加熱する造粒活性炭の製造方法が
開示されている。これらの有機物は加熱炭化時の残量が
多く、高い強度を保持できると共に、活性炭の細孔に吸
着しにくく適当な分散性を有している。2. Description of the Related Art Activated carbon is widely used as an adsorbent or carrier in gas treatment and liquid treatment due to its excellent adsorption performance. In particular, there is an increasing demand for granulated activated carbon that is used by granulating powdered activated carbon due to its processing performance, recyclability, ease of waste management, and ease of handling. Conventionally, granulated activated carbon has been manufactured by adding an organic binder and / or an inorganic binder to powdered activated carbon and performing a treatment such as molding and activation. For example, JP-A-62-5211
No. 6 discloses a method for producing granulated activated carbon in which an aqueous solution of an organic sulfone compound such as a formalin condensate of sodium naphthalenesulfonate is mixed as a binder, the mixture is molded and then heated. These organic substances have a large residual amount during heating and carbonization, can retain high strength, and are not easily adsorbed in the pores of activated carbon, and have appropriate dispersibility.
【０００３】しかしながら、前記の方法では、造粒活性
炭の機械的強度や粒子密度及び吸着性能を調節すること
は困難であった。機械的強度を増加させるためには、結
合剤を多く添加する必要があり、吸着性能が低下する。
粒子密度は、活性炭の原料および結合剤の添加量により
ほぼ決定する。粒子密度を増加させるために結合剤の添
加量を増加させると、吸着性能が低下する。活性炭の機
械的強度が低いと充填操作や逆洗操作の時に活性炭の粉
化が生じ、活性炭の粒子密度が小さいと逆洗操作の時に
活性炭が流失しやすくなる。However, it has been difficult to control the mechanical strength, particle density and adsorption performance of the granulated activated carbon by the above method. In order to increase the mechanical strength, it is necessary to add a large amount of binder, and the adsorption performance will be reduced.
The particle density is almost determined by the amount of raw material of activated carbon and the amount of binder added. Increasing the amount of binder added to increase the particle density decreases the adsorption performance. If the mechanical strength of the activated carbon is low, the activated carbon is pulverized during the filling operation or the backwashing operation, and if the particle density of the activated carbon is low, the activated carbon is easily washed out during the backwashing operation.
【０００４】このような欠点を補うため、結合剤以外に
添加物を加え見かけの粒子密度を調整するという方法が
ある。例えば特公平３−５３０１５号公報には、粉末活
性炭に結合剤を添加し混合物をペレット化するに先立
ち、コランダム形態（菱面、三方結晶）の高密度アルミ
ナから成る不活性無機材料を一定容積比量添加して、昇
温下でスチームにより賦活化する製造方法が開示されて
いる。しかしながら該発明はＰＳＡプロセスにおける吸
着剤としての能力改善を目的としているが、粉末活性炭
とコランダム態アルミナの粒径が等大であることに起因
する機械的強度上の問題には配慮がされていない。In order to compensate for such drawbacks, there is a method in which an apparent particle density is adjusted by adding an additive in addition to the binder. For example, in Japanese Examined Patent Publication No. 3-53015, an inert inorganic material composed of high-density alumina in a corundum form (rhombus, trigonal crystal) is added at a constant volume ratio before adding a binder to powdered activated carbon and pelletizing the mixture. A manufacturing method is disclosed in which a certain amount is added and activated by steam at an elevated temperature. However, although the invention aims to improve the ability as an adsorbent in the PSA process, no consideration is given to the problem of mechanical strength due to the fact that the particle sizes of powdered activated carbon and corundum alumina are equal. ..
【０００５】[0005]
【発明が解決しようとする課題】本発明は、上記のよう
な従来技術の問題点を解決し、活性炭の吸着性能を大き
く低下させることなく、機械的強度及び粒子密度を適切
に調節することのできる造粒活性炭を提供することを課
題とする。DISCLOSURE OF THE INVENTION The present invention solves the problems of the prior art as described above, and aims to appropriately adjust the mechanical strength and particle density without significantly deteriorating the adsorption performance of activated carbon. An object is to provide a granulated activated carbon that can be produced.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するため
に、本発明では、粉末炭と固体粉末と結合剤とからな
り、加熱により賦活化された造粒活性炭において、該粉
末炭の粒径が１５０μｍ以下であり、また、該固体粉末
は熱及び化学的に安定な物質でその平均粒径が該粉末炭
の平均粒径の１／５〜１／２０であり、しかも１０μｍ
以下であることとしたものである。こうすることで、活
性炭の吸着性能低下を最小限とし、製品の機械的強度及
び粒子密度を任意に調整できる。In order to solve the above problems, the present invention provides a granulated activated carbon which is activated by heating and which comprises powdered coal, solid powder and a binder. Is 150 μm or less, and the solid powder is a thermally and chemically stable substance, the average particle size of which is 1/5 to 1/20 of the average particle size of the powdered coal, and 10 μm.
It is supposed to be the following. By doing so, the deterioration of the adsorption performance of activated carbon can be minimized, and the mechanical strength and particle density of the product can be arbitrarily adjusted.
【０００７】次に本発明を詳細に説明する。原料の粉末
炭としては、木質系、殻類系、ヤシガラ系、石炭系等通
常の活性炭原料が使用できる。また、既に活性炭として
調整されたものでも使用できる。その粒径は、１５０μ
ｍ以下（１５０μｍふるい通過率９０％以上）のものが
望ましい。原料粉末炭粒径が大きい場合、製品の可塑性
が低下し、成形が困難となる。また、粒径が極度に小さ
いと活性炭の吸着機能の基となる細孔構造が発達せず吸
着能力が得られないので好ましくない。その下限は原材
料等の性状による。Next, the present invention will be described in detail. As the raw material powdered coal, usual activated carbon raw materials such as wood-based, shell-based, coconut husk, and coal-based can be used. Further, it is also possible to use the one already adjusted as activated carbon. The particle size is 150μ
Those having a diameter of m or less (passage ratio of 150 μm sieve 90% or more) are desirable. When the raw material powder coal particle size is large, the plasticity of the product is lowered and molding becomes difficult. Further, if the particle size is extremely small, the pore structure that is the basis of the adsorption function of the activated carbon does not develop and the adsorption ability cannot be obtained, which is not preferable. The lower limit depends on the properties of raw materials.
【０００８】次に、添加する固体粉末としては、焼成、
賦活に耐える熱安定性を有し、かつ使用に耐える強度を
持つと共に化学的安定性が強い固体であればよい。例え
ばＡｌ，Ｆｅ，Ｐｔ等の金属、アルミナ、各種酸化鉄等
が適用でき、その他ＺｎＯ，ＣｏＯ，ＣｕＯ，Ｃｕ
2 Ｏ，ＮｉＯ2 ，ＴｉＯ2 ，ＭｇＯ等の金属化合物やＳ
ｉＯ2 ，ＴｈＯ2 ，Ｓｉ3 Ｎ4 ，ＴｉＮ，ＴｉＣ，Ｂ4
Ｃ，ＷＣ，ＳｉＣ，ＺｒＯ2 等のセラミックスや同素
材、ムライト，ドロマイト，カオリン，マイカ，シラス
土の鉱物性材料、更に高炉スラグ汚泥溶融物、焼却灰溶
融物、ガラス磨砕物等の粗成材料や磁性を持つ各種フェ
ライト類等も条件により適宜選定することができる。こ
れらは多少の差はあるもののほぼ同様な効果が得られ
る。これら粉末固体は、単一でも複数種混合して添加す
ることもできる。また、固体粉末は、その真比重が活性
炭の１．８倍以下であることが好ましく、その表面に細
孔を有しないものが好ましい。この様な固体粉末は、必
要に応じて製品である造粒活性炭の２〜５０容積％、好
ましくは５〜３０容積％となるように添加する。Next, the solid powder to be added is fired,
It is sufficient that it is a solid that has thermal stability to withstand activation, strength to withstand use, and strong chemical stability. For example, metals such as Al, Fe, Pt, alumina, various iron oxides, etc. can be applied, and other ZnO, CoO, CuO, Cu
Metal compounds such as 2 O, NiO 2 , TiO 2 , and MgO, and S
iO 2 , ThO 2 , Si 3 N 4 , TiN, TiC, B 4
Ceramics such as C, WC, SiC, ZrO 2 and similar materials, mineral materials such as mullite, dolomite, kaolin, mica and silas soil, and crude materials such as blast furnace slag sludge melt, incineration ash melt and glass crushed material Various magnetic ferrites and the like can be appropriately selected according to the conditions. Although these have some differences, almost the same effects can be obtained. These powder solids may be added alone or in combination of two or more. Further, the solid powder preferably has a true specific gravity of 1.8 times or less that of activated carbon, and preferably has no pores on its surface. Such solid powder is added as needed so as to be 2 to 50% by volume, preferably 5 to 30% by volume of the granulated activated carbon as a product.
【０００９】結合剤としては、ベントナイト、水ガラス
などの無機化合物やポリビニルアルコール、カルボキシ
メチルセルロースなどの有機物が使用でき、特にピッ
チ、ナフタレン高縮合物等の分子量が大きく炭化収率の
高い有機物の使用が望ましい。この様な結合剤は、添加
する固体粉末及び製品が必要とする硬度に応じて製品の
２〜３０重量％、好ましくは５〜２０重量％となるよう
に添加する。上記３種類の原料に適当量の水又は溶剤を
添加し混合する。次に押し出し型造粒機等の成形手段に
より造粒後、十分に乾燥又は溶剤を揮散除去する。この
後、結合剤が十分炭化するまで無酸素雰囲気下で焼成す
るが、焼成温度は５００〜１０００℃、好ましくは６５
０〜８５０℃が良い。As the binder, inorganic compounds such as bentonite and water glass, organic substances such as polyvinyl alcohol and carboxymethyl cellulose can be used, and particularly organic substances such as pitch and naphthalene highly condensed products having a large molecular weight and a high carbonization yield can be used. desirable. Such a binder is added in an amount of 2 to 30% by weight, preferably 5 to 20% by weight of the product, depending on the solid powder to be added and the hardness required by the product. An appropriate amount of water or solvent is added to the above three kinds of raw materials and mixed. Next, after granulation by a molding means such as an extrusion-type granulator, it is sufficiently dried or the solvent is volatilized and removed. After that, firing is performed in an oxygen-free atmosphere until the binder is sufficiently carbonized, and the firing temperature is 500 to 1000 ° C., preferably 65.
0-850 degreeC is good.
【００１０】[0010]
【作用】本発明の要点は原料である粉末炭と添加する固
体粉末の平均粒径を峻別した点にある。この様に両者の
大きさが明確に異なることにより、造粒時の接点が増加
し十分な機械的強度を有する強固な造粒活性炭が得られ
る。その機構は図−１に示すように、粉末活性炭粒子間
に微細な固体粉末粒子が入りこみ、粒子間の接点Ａ、Ｂ
ならびに接触面積が増加するものである。このためより
微細な空隙を多数保持しつつ強固な造粒構造を形造るこ
とができる。従って、活性炭の吸着機能の減衰もわずか
である。これに対し、前記特公平３−５３０１５号公報
に開示された粉末活性炭とほぼ同大の添加物を用いる方
法では、図２に示すように粒子間の接触面積が小さく機
械的強度は本発明より弱いものとなり使用上に制約を受
ける。The essential point of the present invention is that the average particle size of the powdered coal as the raw material and the solid powder to be added is sharply distinguished. Since the two sizes are clearly different as described above, the number of contacts during granulation is increased, and a strong granulated activated carbon having sufficient mechanical strength can be obtained. The mechanism is, as shown in FIG. 1, that fine solid powder particles enter between the powdered activated carbon particles, and contact points A and B between the particles.
In addition, the contact area increases. Therefore, it is possible to form a strong granulation structure while holding many finer voids. Therefore, the attenuation of the adsorption function of activated carbon is slight. On the other hand, according to the method disclosed in Japanese Patent Publication No. 3-53015, which uses an additive having substantially the same size as that of the powdered activated carbon, the contact area between particles is small as shown in FIG. It becomes weak and is restricted in use.
【００１１】本発明は機械的強度増強の為に必要な添加
物量が少なくて済むため、添加物代金も安いので廉価に
製品を提供できる。また添加物が粉末活性炭間隙に入り
こむので、製品の造粒活性炭の嵩も小さくなるため、よ
り自在に形成でき、粒子密度をより微妙に設定できる。
しかしながら逆に、該固体粉末の粒径が小さ過ぎると活
性炭のマクロポアの閉塞や二次凝集による分散性の低下
が生じる。その限界は粉末の種類による。そこで、本発
明では適正な粒径比を求め、両者の粒子径に適切な差を
持たせたことで極めて巧妙に所期の課題を達成したもの
である。In the present invention, since the amount of additive required for increasing the mechanical strength is small, the price of the additive is low, so that the product can be provided at a low price. In addition, since the additive enters the voids of the powdered activated carbon, the volume of the granulated activated carbon of the product is reduced, so that it can be formed more freely and the particle density can be set more delicately.
However, conversely, when the particle size of the solid powder is too small, the macropores of the activated carbon are clogged and the dispersibility is reduced due to secondary aggregation. The limit depends on the type of powder. Therefore, in the present invention, an appropriate particle size ratio is obtained, and an appropriate difference is provided between the particle sizes of the two, so that the intended problem can be achieved extremely skillfully.
【００１２】また、前記した次の諸要点に留意すること
で本発明はより良く達成される。即ち添加する固体粉末
において、その真比重が大き過ぎると粉末活性炭と均等
に混合し難い。このため、通常はその真比重は活性炭の
真比重の１．８倍以下とすることが好ましい。また該固
体粉末の表面に細孔を有すると、細孔が結合剤を吸収
し、結合剤使用量が増加するので、表面に細孔を持たな
い固体粉末が好ましい。この様な固体粉末は添加量が少
ないと本発明の効果が顕著に発現せず、また多過ぎると
肝腎の吸着性能の低下を来たす。従って２〜５０容積
％、好ましくは５〜３０容量％の添加が望ましい。結合
剤についても同様で、添加する量が少なければ強度が弱
くなり、多ければ造粒活性炭の吸着性能が低下する。こ
のように本発明により、首記課題を解決し、ガス処理、
水処理分野において、最適な性質を持つ活性炭を自在に
製造できる。The present invention can be better achieved by paying attention to the following points. That is, if the true specific gravity of the solid powder to be added is too large, it will be difficult to uniformly mix it with the powdered activated carbon. For this reason, it is usually preferable that the true specific gravity of the activated carbon be 1.8 times or less. Further, when the surface of the solid powder has pores, the pores absorb the binder, and the amount of the binder used increases, so solid powder having no pores on the surface is preferable. If such a solid powder is added in a small amount, the effect of the present invention is not remarkably exhibited, and if it is too large, the adsorption performance of hepatorenal is deteriorated. Therefore, the addition of 2 to 50% by volume, preferably 5 to 30% by volume is desirable. The same applies to the binder. The smaller the amount added, the weaker the strength, and the larger the amount, the lower the adsorption performance of the granulated activated carbon. As described above, according to the present invention, the above problem is solved, gas treatment,
In the water treatment field, activated carbon with optimum properties can be freely manufactured.
【００１３】[0013]
【実施例】以下、本発明を実施例により具体的に説明す
るが、本発明はこれらの実施例に限定されない。 実施例１ 粉末活性炭として２００メッシュと３２４メッシュのふ
るいにより整粒したヤシガラ活性炭（平均粒子径４５μ
ｍ、真比重２．２）、添加物たる固体粉末としてγアル
ミナ（等軸結晶、真比重３．９）の平均粒子径６．５μ
ｍ、結合剤としてナフタレンスルホン酸ホルマリン高縮
合物を使用した。アルミナ添加率１０容積％、結合剤添
加率１５重量％で配合し、上記混合物１００ｇ当たり４
０ｍｌの水を加え混合、押し出し造粒機により、約４．
５ｍｍφ×７．０ｍｍに造粒した。次いで１００℃で２
時間乾燥の後、無酸素雰囲気下で８００℃、２時間焼成
し、本発明の造粒活性炭を得た。EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples. Example 1 As pulverized activated carbon, coconut husk activated carbon (average particle diameter 45 μm) sized by a sieve of 200 mesh and 324 mesh
m, true specific gravity 2.2), and γ-alumina (equiax crystal, true specific gravity 3.9) as an additive solid powder having an average particle diameter of 6.5 μm.
m, a high condensation product of naphthalenesulfonic acid formalin was used as a binder. Alumina was added at 10% by volume and binder was added at 15% by weight, and the amount was 4 per 100 g of the above mixture.
3. Add 0 ml of water, mix, and extrude with a granulator for about 4.
It was granulated into 5 mmφ × 7.0 mm. Then 2 at 100 ° C
After drying for an hour, it was calcined in an oxygen-free atmosphere at 800 ° C. for 2 hours to obtain a granulated activated carbon of the present invention.
【００１４】また、比較のために、固体粉末であるγア
ルミナを平均粒子径５５μｍのものを用いて同様に処理
して得た造粒活性炭、及びアルミナを添加しないで同様
に処理して得た造粒活性炭についても圧壊強度を測定し
た。その結果、圧壊強度は無添加品１２．５ｋｇ／粒、
φ５５μｍアルミナ添加品１０．６ｋｇ／粒、φ６．５
μｍアルミナ添加品２３．１ｋｇ／粒であり、φ５５μ
ｍでは機械的強度の改善効果は全くないのに対しφ６．
５μｍアルミナでは顕著な強度増加が認められた。従っ
て、本発明による造粒活性炭の効果は明確である。ま
た、３者の間でのベンゼン吸着力に差は認められなかっ
た。For comparison, granulated activated carbon obtained by similarly treating γ-alumina, which is a solid powder, with an average particle size of 55 μm, and the same treatment without adding alumina were also obtained. The crushing strength of the granulated activated carbon was also measured. As a result, the crush strength is 12.5 kg / grain, which is an additive-free product.
φ55 μm Alumina-added product 10.6 kg / grain, φ6.5
μm Alumina-added product 23.1 kg / grain, φ55μ
m has no effect of improving the mechanical strength, while φ6.
A remarkable increase in strength was observed with 5 μm alumina. Therefore, the effect of the granulated activated carbon according to the present invention is clear. In addition, no difference was observed in the benzene adsorption power among the three.
【００１５】実施例２ 粉末活性炭、固体粉末、結合剤とも実施例１と同様と
し、固体粉末の平均粒子径を変化させて、粒子径比と造
粒活性炭の機能について検討した。製品の造粒賦活方法
等は実施例１のとおりである。その結果を表１に示す。Example 2 The same procedure as in Example 1 was applied to the powdered activated carbon, the solid powder and the binder, and the average particle size of the solid powder was changed to examine the particle size ratio and the function of the granulated activated carbon. The method of granulating and activating the product is as in Example 1. The results are shown in Table 1.
【００１６】[0016]
【表１】 なお、粒子径１．０μｍのアルミナ粒子でも造粒を試み
たが、２次凝集を生じアルミナが均一に分散せず、造粒
製品の品質が不安定となり、圧壊強度では１０〜３０ｋ
ｇ／粒とバラツキが大きくなった。充填密度、ベンゼン
吸着力は測定していない。[Table 1] Granulation was attempted even with alumina particles having a particle size of 1.0 μm, but secondary aggregation occurred and alumina was not uniformly dispersed, the quality of the granulated product became unstable, and the crush strength was 10 to 30 k.
The variation was large with g / grain. Packing density and benzene adsorption power were not measured.
【００１７】実施例３ 粉末活性炭として、真比重２．２、平均粒径６０μｍの
ヤシガラ活性炭、この活性炭に混合する粉体として、平
均粒子径６．５μｍ、真比重３．９ｇ／ｍｌのアルミ
ナ、結合剤としてナフタレンスルホン酸ホルマリン高縮
合物を使用した。各原料を、割合を変えて配合し、４０
ｍｌの水を加え混合、押し出し造粒機により、約４．５
×７．０ｍｍに造粒した。ついで、１００℃・２ｈ乾燥
し、無酸素雰囲気が得られる炉で、８００℃・２ｈ焼成
した。得られた造粒活性炭を機械的強度の指標として圧
壊強度、粒子密度の指標として充填密度、吸着性能の指
標としてベンゼン吸着性能を測定した。Example 3 As powdered activated carbon, coconut shell activated carbon having a true specific gravity of 2.2 and an average particle size of 60 μm, and as powder to be mixed with this activated carbon, alumina having an average particle size of 6.5 μm and a true specific gravity of 3.9 g / ml, A high-condensate formalin naphthalenesulfonate was used as a binder. Mix each raw material in different proportions, 40
Add about 4.5 ml of water, mix, and extrude using a granulator.
Granulated to x 7.0 mm. Then, it was dried at 100 ° C. for 2 hours and fired at 800 ° C. for 2 hours in a furnace capable of obtaining an oxygen-free atmosphere. The obtained granulated activated carbon was measured for crushing strength as an index of mechanical strength, packing density as an index of particle density, and benzene adsorption performance as an index of adsorption performance.
【００１８】その結果をアルミナ添加率を変えて配合し
た造粒活性炭については表２に、結合剤添加率を変えた
ものについては表３に示す。またアルミナ添加率とベン
ゼン吸着力との関係を表すグラフを図３に示す。The results are shown in Table 2 for the granulated activated carbon blended at different alumina addition ratios, and in Table 3 for the different binder addition ratios. A graph showing the relationship between the alumina addition rate and the benzene adsorption force is shown in FIG.
【００１９】[0019]
【表２】 [Table 2]
【００２０】[0020]
【表３】 その結果本発明により製造された造粒活性炭は、結合剤
の添加量が少なくても、機械的強度、粒子密度、ベンゼ
ン吸着力が優れた製品が得られた。[Table 3] As a result, with the granulated activated carbon produced according to the present invention, a product excellent in mechanical strength, particle density and benzene adsorption power was obtained even if the amount of the binder added was small.
【００２１】[0021]
【発明の効果】本発明はその構成ゆえ、次の効果を奏す
る。 （１）本発明は適正に固体粉末を添加してあるので自在
にその機械的強度や粒子密度を調節することができる。 （２）本発明は粉末活性炭と添加物である固体粉末の粒
径が異なり各々適正に設定されているので、強固で嵩ば
らず、混合による吸着機能低下もわずかである。また粒
子密度も両者の粒径が同じものに比してより微妙に調整
できる上、添加物量も少なくて良いので安価に製造でき
る。The present invention has the following effects due to its configuration. (1) Since the present invention properly adds solid powder, its mechanical strength and particle density can be freely adjusted. (2) In the present invention, the particle diameters of the activated carbon powder and the solid powder as an additive are different and are set appropriately, so that they are strong and not bulky, and the adsorbing function is slightly reduced by mixing. Further, the particle density can be adjusted more delicately compared to the case where the particle diameters of the both are the same, and the amount of additives can be small, so that the manufacturing cost can be low.
【００２２】上記の特性により、ガス処理、水処理等の
分野への適用にあたり次の効果を奏する。 （３）機械的強度が増加することにより、充填操作や逆
洗操作の時に活性炭の粉化が生じ難くなる。 （４）粒子密度が増加することにより、逆洗操作の時に
活性炭が流失しにくくなり、加えて、単位体積あたりの
吸着性能が向上する。 （５）安価な活性炭を使用でき、処理の経費が軽減され
る。Due to the above characteristics, the following effects can be obtained when applied to the fields of gas treatment, water treatment and the like. (3) The increase in mechanical strength makes it difficult for the activated carbon to be pulverized during the filling operation or the backwashing operation. (4) As the particle density increases, activated carbon is less likely to be washed out during the backwash operation, and in addition, the adsorption performance per unit volume is improved. (5) Inexpensive activated carbon can be used, and the processing cost can be reduced.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の造粒活性炭の構造を示す概略説明図。FIG. 1 is a schematic explanatory view showing the structure of granulated activated carbon of the present invention.
【図２】従来の造粒活性炭の構造を示す概略説明図。FIG. 2 is a schematic explanatory view showing the structure of a conventional granulated activated carbon.
【図３】アルミナ添加率とベンゼン吸着力の関係を示す
グラフ。FIG. 3 is a graph showing the relationship between the alumina addition rate and the benzene adsorption force.
１：活性炭、２：添加物、Ａ・Ｂ：接点 1: Activated carbon, 2: Additive, A / B: Contact
Claims (1)
加熱により賦活化された造粒活性炭において、該粉末炭
の粒径が１５０μｍ以下であり、また、該固体粉末は熱
及び化学的に安定な物質でその平均粒径が該粉末炭の平
均粒径の１／５〜１／２０であり、しかも１０μｍ以下
であることを特徴とする造粒活性炭。1. A powder coal, a solid powder and a binder,
In the granulated activated carbon activated by heating, the particle size of the powdered coal is 150 μm or less, and the solid powder is a thermally and chemically stable substance, the average particle size of which is the average particle size of the powdered coal. Granulated activated carbon characterized in that it is 1/5 to 1/20, and is 10 μm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4090082A JP2548658B2 (en) | 1992-03-17 | 1992-03-17 | Granulated activated carbon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4090082A JP2548658B2 (en) | 1992-03-17 | 1992-03-17 | Granulated activated carbon |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05262511A true JPH05262511A (en) | 1993-10-12 |
| JP2548658B2 JP2548658B2 (en) | 1996-10-30 |
Family
ID=13988604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4090082A Expired - Fee Related JP2548658B2 (en) | 1992-03-17 | 1992-03-17 | Granulated activated carbon |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2548658B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010002570A (en) * | 1999-06-16 | 2001-01-15 | 이한종 | Method of producing a metal catalytic activated carbon for removing an organic compound |
| WO2000078138A3 (en) * | 1999-06-18 | 2001-12-13 | Fraunhofer Ges Forschung | Method for producing shaped, activated charcoal |
| JP2008307191A (en) * | 2007-06-13 | 2008-12-25 | Takehiko Oki | Pillow cover |
| CH700397A1 (en) * | 2009-02-09 | 2010-08-13 | Empa | Feuchtespeicherndes mixture and its production process, use of the material mixture in moisture storage disks, and manufacturing method for moisture storage plates. |
| CN106115696A (en) * | 2016-06-27 | 2016-11-16 | 含山县科宇环境工程有限公司 | A kind of active fruit shell carbon and preparation method thereof |
| CN108751193A (en) * | 2018-08-29 | 2018-11-06 | 陕西师范大学 | A kind of preparation method of semi-coke end pilum shaped activated carbon |
| CN112010303A (en) * | 2020-08-28 | 2020-12-01 | 淮北市森化碳吸附剂有限责任公司 | Method for preparing activated carbon by using novel adhesive |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56160312A (en) * | 1980-05-15 | 1981-12-10 | Sumitomo Bakelite Co Ltd | Manufacture of granular activated carbon |
-
1992
- 1992-03-17 JP JP4090082A patent/JP2548658B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56160312A (en) * | 1980-05-15 | 1981-12-10 | Sumitomo Bakelite Co Ltd | Manufacture of granular activated carbon |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010002570A (en) * | 1999-06-16 | 2001-01-15 | 이한종 | Method of producing a metal catalytic activated carbon for removing an organic compound |
| WO2000078138A3 (en) * | 1999-06-18 | 2001-12-13 | Fraunhofer Ges Forschung | Method for producing shaped, activated charcoal |
| US6902589B1 (en) | 1999-06-18 | 2005-06-07 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for producing shaped, activated charcoal |
| JP2008307191A (en) * | 2007-06-13 | 2008-12-25 | Takehiko Oki | Pillow cover |
| CH700397A1 (en) * | 2009-02-09 | 2010-08-13 | Empa | Feuchtespeicherndes mixture and its production process, use of the material mixture in moisture storage disks, and manufacturing method for moisture storage plates. |
| WO2010089136A3 (en) * | 2009-02-09 | 2011-02-17 | Empa | Moisture-storing mixture of substances and method for producing the same, use of the mixture of substances in moisture-storing panels and method of production for moisture-storing panels |
| CN106115696A (en) * | 2016-06-27 | 2016-11-16 | 含山县科宇环境工程有限公司 | A kind of active fruit shell carbon and preparation method thereof |
| CN108751193A (en) * | 2018-08-29 | 2018-11-06 | 陕西师范大学 | A kind of preparation method of semi-coke end pilum shaped activated carbon |
| CN112010303A (en) * | 2020-08-28 | 2020-12-01 | 淮北市森化碳吸附剂有限责任公司 | Method for preparing activated carbon by using novel adhesive |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2548658B2 (en) | 1996-10-30 |
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