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JP2007055825A - Method and apparatus for producing activated carbon - Google Patents

Method and apparatus for producing activated carbon Download PDF

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Publication number
JP2007055825A
JP2007055825A JP2005240147A JP2005240147A JP2007055825A JP 2007055825 A JP2007055825 A JP 2007055825A JP 2005240147 A JP2005240147 A JP 2005240147A JP 2005240147 A JP2005240147 A JP 2005240147A JP 2007055825 A JP2007055825 A JP 2007055825A
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activated carbon
water vapor
bamboo
dry
steam
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Shika Ri
志霞 李
Hiroshi Konno
宏 今野
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Konoshima Chemical Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L9/00—Treating solid fuels to improve their combustion
    • C10L9/08—Treating solid fuels to improve their combustion by heat treatments, e.g. calcining
    • C10L9/086—Hydrothermal carbonization

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  • Thermal Sciences (AREA)
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  • Oil, Petroleum & Natural Gas (AREA)
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  • Carbon And Carbon Compounds (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for efficiently producing activated carbon by a simple process; and an apparatus for producing the activated carbon. <P>SOLUTION: The apparatus 100 for producing the activated carbon is equipped with a steam generating means 10 for generating dry steam having a steam density lower than that of saturated steam, a heating means 20 for heating the dry steam, a reaction vessel 30 for carbonizing bamboo provided therein by a hydrothermal reaction, and a steam supplying means 40 for supplying the dry steam into the reaction vessel 30. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、竹を原料とした活性炭の製造方法及びその製造装置に関する。   The present invention relates to a method for producing activated carbon using bamboo as a raw material and a production apparatus therefor.

活性炭を製造するための原料としては、種々の炭素含有物質を用いることが可能である。炭素含有物質としては、森林資源や竹、あるいは、有機廃棄物である厨芥、汚泥、古紙等がある。
例えば、古紙等の紙類を綿状あるいは切断後、無酸素状態で加熱することにより、高性能の吸着剤として使用可能な活性炭を製造できることが知られている（特許文献１）。このような技術は、有機廃棄物を有効に活用できるという点で優れている。また、木材や竹材を高温の燃焼ガスで炭化する方法も知られている（特許文献２）。このような技術は、天然に多く存在する資源を有効に活用できるという点で優れている。 As a raw material for producing activated carbon, various carbon-containing substances can be used. Examples of carbon-containing substances include forest resources and bamboo, or organic waste such as firewood, sludge, and waste paper.
For example, it is known that activated carbon that can be used as a high-performance adsorbent can be produced by heating paper such as waste paper in the form of cotton or cutting it in an oxygen-free state (Patent Document 1). Such a technique is excellent in that organic waste can be effectively used. In addition, a method of carbonizing wood or bamboo with high-temperature combustion gas is also known (Patent Document 2). Such a technique is excellent in that it can effectively utilize resources that exist in nature.

特開平７−２４２４０６号公報JP 7-242406 A 特開２００２−３３８２２３号公報JP 2002-338223 A

しかしながら、特許文献１のような、可燃性廃棄物を無酸素状態で加熱する乾留方法では、得られた活性炭の収率が低い上に、活性炭の比表面積が小さくて吸着性が低いなどの問題がある。一般に活性炭の吸着性能を向上させるために比表面積を上げると、活性炭原料の歩留が低下して、活性炭の収率は低下する。特に、可燃性廃棄物の一種であるプラスチック類は、乾留中に揮発するため乾留処理後に残存する炭素量が少なく、活性炭の収率が低いという問題もある。
また、特許文献２の方法では、高温の燃焼ガスが必要となり、エネルギー原として燃料を多量に必要とするだけでなく、燃焼炉などの大がかりな設備を必要とする。 However, in the dry distillation method of heating flammable waste in an oxygen-free state as in Patent Document 1, there is a problem that the yield of the obtained activated carbon is low and the specific surface area of the activated carbon is small and the adsorptivity is low. There is. In general, when the specific surface area is increased in order to improve the adsorption performance of activated carbon, the yield of the activated carbon raw material is lowered and the yield of activated carbon is lowered. In particular, plastics, which are a kind of combustible waste, have a problem in that since they volatilize during dry distillation, the amount of carbon remaining after the dry distillation treatment is small and the yield of activated carbon is low.
In addition, the method of Patent Document 2 requires high-temperature combustion gas, which not only requires a large amount of fuel as an energy source, but also requires a large facility such as a combustion furnace.

そこで、本発明の目的は、自然環境に多く存在する竹資源を用い、簡便な方法により効率的に活性炭を製造する方法、及びそのための製造装置を提供することにある。   Accordingly, an object of the present invention is to provide a method for efficiently producing activated carbon by a simple method using bamboo resources that are present in a large amount in the natural environment, and a production apparatus therefor.

本発明の活性炭の製造方法は、竹を原料とする活性炭の製造方法であって、飽和水蒸気より低い水蒸気密度を有する乾燥水蒸気を用いて竹を炭化することを特徴とする。
ここで、図１に水の状態図を示した。水は、温度・圧力を３７４℃、２２ＭＰa以上の条件で、液体でも気体でもない均一な非凝集性高密度流体になる。この境界点が臨界点であり、臨界点以上の状態を超臨界水と呼び、温度・圧力が臨界点より若干低い熱水を亜臨界水と呼ぶ。そして、飽和蒸気圧曲線以下のいわゆる不飽和の領域にある蒸気相を本発明では、乾燥水蒸気という。 The method for producing activated carbon of the present invention is a method for producing activated carbon using bamboo as a raw material, characterized in that bamboo is carbonized using dry steam having a water vapor density lower than saturated steam.
Here, FIG. 1 shows a state diagram of water. Water becomes a uniform non-cohesive dense fluid that is neither liquid nor gas under conditions of temperature and pressure of 374 ° C. and 22 MPa or higher. This boundary point is a critical point, a state above the critical point is called supercritical water, and hot water whose temperature and pressure are slightly lower than the critical point is called subcritical water. In the present invention, the vapor phase in the so-called unsaturated region below the saturated vapor pressure curve is referred to as dry water vapor.

本発明によれば、乾燥水蒸気による水熱反応により竹を炭化するため、活性炭を効率的に得ることができる。また、原料として自然環境中に極めて多く存在する竹を用いており、環境に対する負荷も低い。   According to the present invention, since bamboo is carbonized by a hydrothermal reaction with dry steam, activated carbon can be obtained efficiently. In addition, bamboo, which is extremely present in the natural environment, is used as a raw material, and the burden on the environment is low.

本発明では、前記乾燥水蒸気が、水から発生させた水蒸気であることが好ましい。
本発明によれば、水から発生させた乾燥水蒸気を用いて水熱反応を行うため、水熱反応の制御が容易となる。例えば、大気をそのまま不飽和水蒸気として利用した場合では、水蒸気密度を制御しにくく、結果として水熱反応を制御することが困難である。水から水蒸気を発生させることで、水蒸気の密度を制御しやすくなり、水熱反応そのものを制御することも容易となる。
この場合、水の蒸発量を制御して水蒸気密度の異なる乾燥水蒸気を発生させると、竹の種類や形状に応じた水熱反応を起こすことができ、活性炭を効率的に製造することができるので好ましい。また、生成する活性炭の性能を制御することも容易となる。 In the present invention, the dry water vapor is preferably water vapor generated from water.
According to the present invention, since the hydrothermal reaction is performed using dry steam generated from water, the hydrothermal reaction can be easily controlled. For example, when the atmosphere is used as it is as unsaturated steam, it is difficult to control the water vapor density, and as a result, it is difficult to control the hydrothermal reaction. By generating water vapor from water, it becomes easy to control the density of the water vapor, and it becomes easy to control the hydrothermal reaction itself.
In this case, if dry water vapor with different water vapor densities is generated by controlling the amount of water evaporation, a hydrothermal reaction can be caused according to the type and shape of the bamboo, and activated carbon can be produced efficiently. preferable. Moreover, it becomes easy to control the performance of the generated activated carbon.

本発明では、不活性ガスにより前記乾燥水蒸気の密度を制御することが好ましい。
本発明によれば、不活性ガス（例えば窒素ガス）により乾燥水蒸気の密度を制御するので、竹の水熱反応を行う際に、好ましくない反応（分解、酸化等）を抑制することができる。 In the present invention, it is preferable to control the density of the dry water vapor with an inert gas.
According to the present invention, since the density of dry water vapor is controlled by an inert gas (for example, nitrogen gas), undesirable reactions (decomposition, oxidation, etc.) can be suppressed when performing a hydrothermal reaction of bamboo.

本発明では、前記乾燥水蒸気の温度が１１０〜４００℃、前記乾燥水蒸気の密度が分圧で０．１３〜２０MPaであることが好ましい。より好ましくは、乾燥水蒸気の温度が１５０〜３５０℃、乾燥水蒸気の密度が分圧で０．４〜１２MPaである。
本発明によれば、乾燥水蒸気の温度と密度が所定の範囲であるので、竹の炭化反応が好適に進行する。乾燥水蒸気の温度が１１０℃未満であると、炭化反応が起こりにくく好ましくない。また、乾燥水蒸気の温度が４００℃を超えると活性炭の細孔構造をうまく形成することができない。また、乾燥水蒸気の密度が分圧で０．１３ＭＰａ未満であると、炭化反応が起こりにくく好ましくない。また、水蒸気の密度が分圧で２０ＭＰａを超えると必要以上に設備費が膨大となり経済的に不利である。 In this invention, it is preferable that the temperature of the said dry steam is 110-400 degreeC, and the density of the said dry steam is 0.13-20 MPa by partial pressure. More preferably, the temperature of dry steam is 150 to 350 ° C., and the density of dry steam is 0.4 to 12 MPa in terms of partial pressure.
According to the present invention, since the temperature and density of the dry steam are within a predetermined range, the carbonization reaction of bamboo proceeds suitably. When the temperature of the dry steam is less than 110 ° C., it is not preferable because the carbonization reaction hardly occurs. Moreover, when the temperature of the dry steam exceeds 400 ° C., the pore structure of the activated carbon cannot be formed well. Moreover, it is difficult for the carbonization reaction to occur when the density of the dry steam is less than 0.13 MPa in terms of partial pressure. Moreover, when the density of water vapor exceeds 20 MPa in partial pressure, the equipment cost becomes excessively large, which is economically disadvantageous.

本発明では、原料である竹を水熱反応を行う反応器内に載置した後、前記乾燥水蒸気を前記圧力容器内に送気することが好ましい。
本発明によれば、竹を反応器内に載置した後、乾燥水蒸気を反応器内に送気するので、反応器内で確実に竹の炭化反応を行うことができる。 In the present invention, it is preferable to feed the dry steam into the pressure vessel after placing bamboo as a raw material in a reactor that performs a hydrothermal reaction.
According to the present invention, after placing bamboo in the reactor, dry steam is fed into the reactor, so that the carbonization reaction of bamboo can be reliably performed in the reactor.

本発明では、原料である竹が鱗片状砕片であることが好ましい。
本発明によれば、原料である竹が鱗片状砕片であるので、炭化後の処理が簡便である。例えば、竹を粉末状に粉砕してしまうと、炭化後に集塵機を必要とするなど、設備的な対応も必要となる。 In this invention, it is preferable that the bamboo which is a raw material is a scaly fragment.
According to the present invention, since the raw material bamboo is scaly fragments, the treatment after carbonization is simple. For example, if bamboo is pulverized into a powder form, a facility response such as a dust collector is required after carbonization.

本発明の活性炭の製造装置は、竹を原料とする活性炭の製造装置であって、水から、飽和水蒸気より低い水蒸気密度を有する乾燥水蒸気を発生させる水蒸気発生手段と、前記乾燥水蒸気を加熱する加熱手段と、内部に載置した竹を水熱反応により炭化するための反応器と、前記反応器内に前記乾燥水蒸気を送気する送気手段と、を備えることを特徴とする。
本発明によれば、竹を炭化して活性炭を製造するにあたり、乾燥水蒸気を用いて反応器内で水熱反応を起こすことができるため、竹から効率的に活性炭を製造することができる。 The activated carbon production apparatus of the present invention is an activated carbon production apparatus using bamboo as a raw material, steam generating means for generating dry steam having a water vapor density lower than saturated steam from water, and heating for heating the dry steam Means, a reactor for carbonizing bamboo placed inside by a hydrothermal reaction, and an air supply means for supplying the dry water vapor into the reactor.
According to the present invention, when carbon is produced by carbonizing bamboo, a hydrothermal reaction can be caused in the reactor using dry steam, so that activated carbon can be produced efficiently from bamboo.

以下に、本発明である活性炭の製造方法を実施するための最良の形態を図面に基づいて詳述する。
〔製造装置の概要〕
図２には、本発明の活性炭の製造方法を実施するために用いられる活性炭の製造装置１００の概略構成を示した。
活性炭の製造装置１００は、乾燥水蒸気発生手段としてのボイラー１０と、ボイラー１０からの乾燥水蒸気を所定の温度に加熱する加熱手段としてのヒータ２０と、内部に設置された竹Ｔを乾燥水蒸気により加熱して炭化するための反応器３０と、反応器３０内に乾燥水蒸気を送気する送気手段としての導管４０とを備えて構成される。 Below, the best form for implementing the manufacturing method of the activated carbon which is this invention is explained in full detail based on drawing.
[Outline of manufacturing equipment]
In FIG. 2, schematic structure of the activated carbon manufacturing apparatus 100 used in order to implement the manufacturing method of the activated carbon of this invention was shown.
The activated carbon manufacturing apparatus 100 heats the boiler 10 as dry water vapor generating means, the heater 20 as heating means for heating the dry water vapor from the boiler 10 to a predetermined temperature, and the bamboo T installed therein with dry water vapor. Thus, the reactor 30 is configured to be carbonized and a conduit 40 serving as an air feeding means for feeding dry steam into the reactor 30.

ボイラー１０の本体は、市販のものをそのまま使用できるが、注気口１１より不活性ガス（例えば窒素ガス）を導入することで水蒸気密度の調節された乾燥水蒸気を製造することができる。
ヒータ２０は、ボイラー１０からの乾燥水蒸気を所定の温度に加熱する。このヒータ２０の加熱方式としては、電熱あるいは、液状熱媒体を通した配管による加熱など市販の加熱装置を採用することができる。あるいは、導管４０にバンドヒータを巻き付けてもよい。 As the main body of the boiler 10, a commercially available one can be used as it is, but by introducing an inert gas (for example, nitrogen gas) from the air inlet 11, dry water vapor whose water vapor density is adjusted can be produced.
The heater 20 heats the dry water vapor from the boiler 10 to a predetermined temperature. As a heating method of the heater 20, a commercially available heating device such as electric heating or heating by piping through a liquid heat medium can be employed. Alternatively, a band heater may be wound around the conduit 40.

反応器３０は、内部で水熱反応を起こすためのものであり、活性炭の製造装置１００の本体とも言える。反応器３０には、センサ３１が接続され、内部の環境（温度、圧力及び水蒸気密度）を測定できるようになっている。これらの測定データをもとに、ボイラー１０での水蒸気発生量や不活性ガスの流量、ヒータ２０の設定温度、あるいはバルブ１１０の開度を変えることで反応器３０内の環境を制御できる。反応器３０の下部には水蒸気が凝縮した場合の排水用としてドレンバルブ１２０が設けられている。   The reactor 30 is for causing a hydrothermal reaction inside, and can be said to be the main body of the activated carbon production apparatus 100. A sensor 31 is connected to the reactor 30 so that the internal environment (temperature, pressure and water vapor density) can be measured. Based on these measurement data, the environment in the reactor 30 can be controlled by changing the amount of water vapor generated in the boiler 10, the flow rate of the inert gas, the set temperature of the heater 20, or the opening of the valve 110. A drain valve 120 is provided at the bottom of the reactor 30 for draining water when water vapor is condensed.

原料である竹Ｔは、金網製籠３２に入れて、反応器３０内に載置される。竹Ｔは、鱗片状に粉砕されていると炭化後の処理が簡便であるので好ましい。例えば、竹を粉末状に粉砕してしまうと、炭化後に集塵機を必要とするなど、設備的な対応も必要となる。
ここで、竹Ｔを炭化する際に、反応器３０内の加熱温度は１１０〜４００℃が好ましく、１５０〜３５０℃がより好ましい。加熱温度が１１０℃未満では、炭化反応（水熱反応）がうまく進行しない。また、４００℃を超えると、反応が激しすぎて、活性炭の細孔構造をうまく形成することができない。
水蒸気密度は、分圧で０．１３〜２０MPaであることが好ましい。より好ましくは、０．４〜１２MPaである。乾燥水蒸気の密度が分圧で０．１３ＭＰａ未満であると、炭化反応が起こりにくく好ましくない。また、水蒸気の密度が分圧で２０ＭＰａを超えると必要以上に設備費が膨大となり経済的に不利である。 Bamboo T, which is a raw material, is placed in a wire mesh cage 32 and placed in the reactor 30. Bamboo T is preferably crushed into scales because the treatment after carbonization is simple. For example, if bamboo is pulverized into a powder form, a facility response such as a dust collector is required after carbonization.
Here, when carbonizing bamboo T, the heating temperature in the reactor 30 is preferably 110 to 400 ° C, and more preferably 150 to 350 ° C. When the heating temperature is less than 110 ° C., the carbonization reaction (hydrothermal reaction) does not proceed well. On the other hand, when the temperature exceeds 400 ° C., the reaction is so intense that the pore structure of the activated carbon cannot be well formed.
The water vapor density is preferably 0.13 to 20 MPa in terms of partial pressure. More preferably, it is 0.4-12 MPa. If the density of the dry steam is less than 0.13 MPa in partial pressure, it is not preferable because the carbonization reaction hardly occurs. Moreover, when the density of water vapor exceeds 20 MPa in partial pressure, the equipment cost becomes excessively large, which is economically disadvantageous.

上述の実施形態によれば、以下の様な効果を奏することができる。
（１）乾燥水蒸気による強力な水熱反応により、反応器３０内で竹Ｔを効率的に炭化して活性炭を得ることができる。
（２）乾燥水蒸気を用いているため、環境に対する負荷がほとんどない。
（３）ボイラー１０を用いているため、簡便に水蒸気を発生させることができ、反応器３０内での炭化反応を安定して行うことができる。 According to the above-described embodiment, the following effects can be obtained.
(1) By a strong hydrothermal reaction with dry steam, the bamboo T can be efficiently carbonized in the reactor 30 to obtain activated carbon.
(2) Since dry steam is used, there is almost no burden on the environment.
(3) Since the boiler 10 is used, water vapor can be easily generated, and the carbonization reaction in the reactor 30 can be stably performed.

（４）水蒸気が飽和水蒸気ではなく、乾燥水蒸気（不飽和の水蒸気）であり、その水蒸気密度（不飽和度）を変えることで反応条件を容易に変更できる。例えば、原料である竹の種類や形状に応じた条件の設定が可能となる。
（５）水蒸気密度の調節用に不活性ガス（例えば窒素ガス）を用いているので、その流量を変えることで水蒸気密度を容易に変更できるだけでなく、得られる活性炭の物性に対しても悪影響を与えない。 (4) The water vapor is not saturated water vapor but dry water vapor (unsaturated water vapor), and the reaction conditions can be easily changed by changing the water vapor density (unsaturation degree). For example, it is possible to set conditions according to the type and shape of bamboo as a raw material.
(5) Since an inert gas (for example, nitrogen gas) is used to adjust the water vapor density, not only can the water vapor density be changed easily by changing the flow rate, but also the physical properties of the resulting activated carbon will be adversely affected. Don't give.

本発明を実施するための最良の構成などは、以上の記載で開示されているが、本発明は、これに限定されるものではない。すなわち、本発明は、主に特定の実施形態に関して説明されているが、本発明の技術的思想および目的の範囲から逸脱することなく、以上述べた実施形態に対し、構造、材質、その他の詳細な構成において、当業者が様々な変形を加えることができるものである。
したがって、上記に開示した構造、材質などを限定した記載は、本発明の理解を容易にするために例示的に記載したものであり、本発明を限定するものではないから、それらの構造などの限定の一部若しくは全部の限定を外した名称での記載は、本発明に含まれるものである Although the best configuration for carrying out the present invention has been disclosed in the above description, the present invention is not limited to this. That is, the present invention has been described primarily with reference to specific embodiments, but the structure, materials, and other details of the embodiments described above are within the scope of the technical idea and purpose of the present invention. In this configuration, those skilled in the art can make various modifications.
Accordingly, the description of the structure, material, and the like disclosed above is exemplary for ease of understanding of the present invention, and does not limit the present invention. Descriptions with names excluding some or all of the limitations are included in the present invention.

例えば、本実施形態では、反応室が一つだけのいわゆるタンク式の反応器を用いているが、タワー型の反応器を用い、試料を置く棚を多段式にしてもよい。試料を大量に処理できる点で有利である。
また、水蒸気発生手段として、本実施形態では、市販のボイラーをそのまま使用したが、
熱伝導性のよい金属（例えば真鍮）を粒状にしたものを多数充填したタワー型水蒸気発生器を用いてもよい。このような金属は加熱した状態で水に触れると大量の水蒸気を容易に発生するため、水蒸気発生手段として好適に利用できる。 For example, in this embodiment, a so-called tank type reactor having only one reaction chamber is used, but a tower type reactor may be used and a shelf on which a sample is placed may be a multistage type. This is advantageous in that a large amount of sample can be processed.
Further, as the water vapor generating means, in the present embodiment, a commercially available boiler is used as it is.
A tower-type steam generator filled with many particles of a metal having good thermal conductivity (for example, brass) may be used. Since such a metal easily generates a large amount of water vapor when heated in contact with water, it can be suitably used as a water vapor generating means.

次に、実施例により本発明をさらに詳細に説明する。ただし、本発明はこれらの例によって何等限定されるものではない。なお、装置等として共通する箇所は、実施形態における図の符号と同じ符号を使用した。
鱗片状に粉砕した竹１００ｇを金網製籠３２に入れ、その金網製籠３２を反応器３０の内部に載置した。
ボイラー１０により１８０℃の飽和水蒸気を発生させ、ヒータ２０により３００℃にまで昇温した後、導管４０を通して反応器３０に乾燥水蒸気を通気させた。反応器３０内の水蒸気分圧は０．４９MPaに保持して、３時間炭化処理を行った。 Next, the present invention will be described in more detail with reference to examples. However, the present invention is not limited to these examples. In addition, the same code | symbol as the code | symbol of the figure in embodiment was used for the location which is common as an apparatus.
100 g of bamboo crushed into scales was placed in a wire mesh cage 32, and the wire mesh cage 32 was placed inside the reactor 30.
Saturated steam at 180 ° C. was generated by the boiler 10, the temperature was raised to 300 ° C. by the heater 20, and then dry steam was passed through the reactor 30 through the conduit 40. The steam partial pressure in the reactor 30 was kept at 0.49 MPa, and carbonization was performed for 3 hours.

得られた炭化物について、活性炭としての性能をよう素吸着量により評価した。比較の対象として、市販されている活性炭の中で性能の高いヤシガラ活性炭と市販の竹炭を用いた。結果は以下の通りである。
本発明品 ：８２０ｍｇ／ｇ
ヤシガラ活性炭：４００ｍｇ／ｇ
竹炭 ：３０ｍｇ／ｇ
本発明の方法により得られた活性炭は、竹炭よりはるかに優れたヨウ素吸着量を示し、市販のヤシガラ活性炭より優れた性能を示した。市販の竹炭は乾燥状態での加熱により炭化されたものであるが、適度の水蒸気が存在しないため、水熱反応が起こらず細孔がうまく形成されされなかったものと思われる。 About the obtained carbide | carbonized_material, the performance as activated carbon was evaluated by the iodine adsorption amount. As comparison targets, among the activated carbons on the market, coconut husk activated carbon with high performance and commercially available bamboo charcoal were used. The results are as follows.
Product of the present invention: 820 mg / g
Coconut charcoal activated carbon: 400mg / g
Bamboo charcoal: 30mg / g
The activated carbon obtained by the method of the present invention showed much better iodine adsorption than bamboo charcoal, and better performance than commercially available coconut shell activated carbon. Commercially available bamboo charcoal is carbonized by heating in a dry state, but since there is no appropriate water vapor, hydrothermal reaction does not occur and pores are not formed well.

本発明は、竹から効率的に活性炭を製造する方法、及びその製造装置として利用できる。
る。 INDUSTRIAL APPLICABILITY The present invention can be used as a method for efficiently producing activated carbon from bamboo and a production apparatus therefor.
The

水の状態図。Water state diagram. 本実施形態に係る活性炭の製造装置の概略図。Schematic of the activated carbon manufacturing apparatus which concerns on this embodiment.

符号の説明Explanation of symbols

１０ ボイラー（水蒸気発生手段）
２０ ヒータ
３０ 反応器
４０ 導管
１００ 活性炭の製造装置 10 Boiler (water vapor generating means)
20 heater 30 reactor 40 conduit 100 activated carbon production equipment

Claims (7)

竹を原料とする活性炭の製造方法であって、
飽和水蒸気より低い水蒸気密度を有する乾燥水蒸気を用いて竹を炭化することを特徴とする活性炭の製造方法。 A method for producing activated carbon using bamboo as a raw material,
A method for producing activated carbon, characterized in that bamboo is carbonized using dry water vapor having a water vapor density lower than that of saturated water vapor. 請求項１に記載の活性炭の製造方法において、
前記乾燥水蒸気が、水から発生させた水蒸気であることを特徴とする活性炭の製造方法。 In the manufacturing method of the activated carbon of Claim 1,
The method for producing activated carbon, wherein the dry steam is steam generated from water. 請求項１又は請求項２に記載の活性炭の製造方法において、
不活性ガスにより前記乾燥水蒸気の密度を制御することを特徴とする活性炭の製造方法。 In the manufacturing method of the activated carbon of Claim 1 or Claim 2,
A method for producing activated carbon, wherein the density of the dry water vapor is controlled by an inert gas. 請求項１〜請求項３のいずれかに記載の活性炭の製造方法において、
前記乾燥水蒸気の温度が１１０〜４００℃、前記乾燥水蒸気の密度が分圧で０．１３〜２０MPaであることを特徴とする活性炭の製造方法。 In the manufacturing method of the activated carbon in any one of Claims 1-3,
A method for producing activated carbon, wherein the temperature of the dry steam is 110 to 400 ° C., and the density of the dry steam is 0.13 to 20 MPa in terms of partial pressure. 請求項１〜請求項４のいずれかに記載の活性炭の製造方法において、
原料である竹を水熱反応を行う反応器内に載置した後、前記乾燥水蒸気を前記反応器内に送気することを特徴とする活性炭の製造方法。 In the manufacturing method of the activated carbon in any one of Claims 1-4,
A method for producing activated carbon, comprising placing bamboo, which is a raw material, in a reactor that performs a hydrothermal reaction, and then feeding the dry steam into the reactor. 請求項１〜請求項５のいずれかに記載の活性炭の製造方法において、
原料である竹が鱗片状砕片であることを特徴とする活性炭の製造方法。 In the manufacturing method of the activated carbon in any one of Claims 1-5,
A method for producing activated carbon, wherein the raw material bamboo is scaly fragments. 竹を原料とする活性炭の製造装置であって、
水から、飽和水蒸気より低い水蒸気密度を有する乾燥水蒸気を発生させる水蒸気発生手段と、
前記乾燥水蒸気を加熱する加熱手段と、
内部に載置した竹を水熱反応により炭化するための反応器と、
前記反応器内に前記乾燥水蒸気を送気する送気手段と、
を備えることを特徴とする活性炭の製造装置。 An apparatus for producing activated carbon using bamboo as a raw material,
Water vapor generating means for generating dry water vapor having a water vapor density lower than saturated water vapor from water;
Heating means for heating the dry steam;
A reactor for carbonizing bamboo placed inside by hydrothermal reaction;
An air supply means for supplying the dry water vapor into the reactor;
An apparatus for producing activated carbon, comprising:
JP2005240147A 2005-08-22 2005-08-22 Method and apparatus for producing activated carbon Pending JP2007055825A (en)

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WO2008138637A2 (en) * 2007-05-11 2008-11-20 Suncoal Industries Gmbh Method and device for hydrothermal carbonization (htc) of biomass using an htc system
WO2009095015A1 (en) * 2008-01-30 2009-08-06 Simon Albert Breitbach Method for carbonating organic substances
KR101184635B1 (en) 2010-03-24 2012-09-20 하이트진로 주식회사 Method for preparing deodorized alcohols using three steam-activated carbons
JP2013040054A (en) * 2011-08-11 2013-02-28 Lignyte Co Ltd Carbide and method for producing the carbide
US8481642B2 (en) * 2008-06-23 2013-07-09 Csl Carbon Solutions Ltd. Process for the preparation of hydrothermal hybrid material from biomass, and hydrothermal hybrid material obtainable by the process
CN105602589A (en) * 2015-11-16 2016-05-25 湖南莎丽袜业股份有限公司 Preparation method of high-activity machine-made bamboo charcoal
CN106311145A (en) * 2016-09-20 2017-01-11 湖南南方搏云新材料股份有限公司 Method for preparing heavy metal adsorption type activated carbon fibers from uncured carbon felt leftover materials
CN113880069A (en) * 2021-10-12 2022-01-04 国际竹藤中心 Preparation method for efficiently synthesizing micron-sized bamboo cellulose-based carbon microspheres

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JP2004277229A (en) * 2003-03-17 2004-10-07 Tsunehisa Matsuoka Method for manufacturing carbide and activated carbon, and apparatus therefor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001192670A (en) * 1999-10-29 2001-07-17 Ryoichi Okamoto Method of manufacturing carbonized material and pyrolizer for organic waste
JP2004277229A (en) * 2003-03-17 2004-10-07 Tsunehisa Matsuoka Method for manufacturing carbide and activated carbon, and apparatus therefor

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008138637A2 (en) * 2007-05-11 2008-11-20 Suncoal Industries Gmbh Method and device for hydrothermal carbonization (htc) of biomass using an htc system
WO2008138637A3 (en) * 2007-05-11 2009-01-29 Suncoal Ind Gmbh Method and device for hydrothermal carbonization (htc) of biomass using an htc system
WO2009095015A1 (en) * 2008-01-30 2009-08-06 Simon Albert Breitbach Method for carbonating organic substances
US8481642B2 (en) * 2008-06-23 2013-07-09 Csl Carbon Solutions Ltd. Process for the preparation of hydrothermal hybrid material from biomass, and hydrothermal hybrid material obtainable by the process
KR101184635B1 (en) 2010-03-24 2012-09-20 하이트진로 주식회사 Method for preparing deodorized alcohols using three steam-activated carbons
JP2013040054A (en) * 2011-08-11 2013-02-28 Lignyte Co Ltd Carbide and method for producing the carbide
CN105602589A (en) * 2015-11-16 2016-05-25 湖南莎丽袜业股份有限公司 Preparation method of high-activity machine-made bamboo charcoal
CN106311145A (en) * 2016-09-20 2017-01-11 湖南南方搏云新材料股份有限公司 Method for preparing heavy metal adsorption type activated carbon fibers from uncured carbon felt leftover materials
CN113880069A (en) * 2021-10-12 2022-01-04 国际竹藤中心 Preparation method for efficiently synthesizing micron-sized bamboo cellulose-based carbon microspheres

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