JPS5813490B2 - How to regenerate activated carbon - Google Patents
How to regenerate activated carbonInfo
- Publication number
- JPS5813490B2 JPS5813490B2 JP7761576A JP7761576A JPS5813490B2 JP S5813490 B2 JPS5813490 B2 JP S5813490B2 JP 7761576 A JP7761576 A JP 7761576A JP 7761576 A JP7761576 A JP 7761576A JP S5813490 B2 JPS5813490 B2 JP S5813490B2
- Authority
- JP
- Japan
- Prior art keywords
- activated carbon
- aqueous solution
- acid
- regenerating
- waste activated
- 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
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims description 114
- 239000002699 waste material Substances 0.000 claims description 27
- 238000011069 regeneration method Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 15
- 239000007864 aqueous solution Substances 0.000 claims description 13
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 230000001172 regenerating effect Effects 0.000 claims description 9
- 230000001590 oxidative effect Effects 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 5
- 239000005416 organic matter Substances 0.000 claims description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 4
- XTEGARKTQYYJKE-UHFFFAOYSA-N chloric acid Chemical compound OCl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-N 0.000 claims description 3
- 229940005991 chloric acid Drugs 0.000 claims description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 2
- 229910017604 nitric acid Inorganic materials 0.000 claims description 2
- 230000008929 regeneration Effects 0.000 description 13
- 239000003245 coal Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000002791 soaking Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 2
- 230000007420 reactivation Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229960000907 methylthioninium chloride Drugs 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Description
【発明の詳細な説明】
本発明は、有機物を吸着した使用済みの廃活性炭に電流
を通してジュール熱を発生させて廃活性炭を加熱再生す
る通電式活性炭再生法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an energizing activated carbon regeneration method for heating and regenerating waste activated carbon by passing an electric current through the used waste activated carbon that has adsorbed organic matter to generate Joule heat.
一般に吸着剤としての活性炭は表面吸着が飽和状態に達
すれば再活性化しなければならないが、この再活性化の
方法として従来では使用済みの廃活性炭の再生は、次の
三段階を経て再生されることが知られている。Generally, activated carbon used as an adsorbent must be reactivated once its surface adsorption reaches a saturated state, but the conventional method for this reactivation is to regenerate used waste activated carbon through the following three steps: It is known.
即ち、（１）活性炭に吸着している水分を蒸発する蒸発
工程（温度１００〜１５０℃）。That is, (1) an evaporation step (temperature 100 to 150°C) to evaporate moisture adsorbed on activated carbon.
（２）吸着した有機物を分解、蒸発させ、あるいはコー
クス状に炭化させる脱着工程（温度２００〜６００℃）
。(2) Desorption process in which adsorbed organic matter is decomposed, evaporated, or carbonized into coke (temperature 200-600°C)
.
（３）水蒸気を吹き込んで活性炭細孔内に残存する有機
物がコークス状に炭化したものを水性ガス化反応によっ
て完全に除去する賦活工程（温度８００〜９００℃）。(3) An activation step (temperature: 800 to 900° C.) in which water vapor is blown into the activated carbon to completely remove carbonized coke-like organic matter remaining in the activated carbon pores through a water gasification reaction.
の工程が活性炭の再生する有効な方法として一般的であ
る。This process is a common and effective method for regenerating activated carbon.
また、通電式活性炭再生法においても、廃活性炭は上記
の三工程を経て再生されるが、この場合は熱源として電
気を使用する。Furthermore, in the energizing activated carbon regeneration method, waste activated carbon is regenerated through the three steps described above, but in this case, electricity is used as a heat source.
すなわち、第１図示例の如き再生装置で、電気は電極を
通して電極間に詰めた廃活性炭層を通ることによってジ
ュール熱が発生し、この熱によって活性炭を加熱し、乾
燥、脱着を行ない、水蒸気発生装置で発生させた水蒸気
を再生装置の下部から活性炭層に吹き込んで活性炭を賦
活するものである。That is, in the regeneration device shown in the first illustrated example, electricity passes through the electrodes and passes through a layer of waste activated carbon packed between the electrodes, generating Joule heat, which heats the activated carbon, dries it, desorbs it, and generates water vapor. The steam generated by the device is blown into the activated carbon layer from the bottom of the regenerator to activate the activated carbon.
しかしながらかかる従来の通電式活性炭再生法において
は、上記したように８００〜９００℃の高温を必要とし
、そのための電気エネルギーも大量に必要とし経費が大
きく経済的に非常に不利であり、大規模に用いるために
も問題がまだあった。However, such conventional activated carbon regeneration methods require a high temperature of 800 to 900°C as described above, and require a large amount of electrical energy, are expensive and economically disadvantageous, and cannot be used on a large scale. There were still problems in using it.
本発明ではこれら従来の欠点を除去しようとするもので
通電式活性炭再生法において再生操作も簡単で再生に必
要な温度を大巾に低くし、また電気エネルギーをも容易
に節減することができる経済的な活性炭の再生方法を提
供することを目的とするものである。The present invention aims to eliminate these conventional drawbacks, and is an economical method that uses an energized activated carbon regeneration method.The regeneration operation is simple, the temperature required for regeneration is significantly lowered, and electrical energy can be easily saved. The purpose of this invention is to provide a method for regenerating activated carbon.
本発明は、有機物を吸着した使用済みの廃活性炭に電流
を通じてジュール熱を発生させて廃活性炭を加熱再生す
る方法において、あらかじめ廃活性炭を酸化力の強い酸
素酸の水溶液に浸漬したるのち通電することを特徴とす
るものである。The present invention is a method for heating and regenerating waste activated carbon by passing an electric current through the used waste activated carbon that has adsorbed organic matter to generate Joule heat, in which the waste activated carbon is immersed in an aqueous solution of oxygen acid with strong oxidizing power in advance and then energized. It is characterized by this.
本発明に使用する酸化力の強い酸素酸としては高温で安
定であることが好ましく、例えば硫酸、硝酸、塩素酸、
過塩素酸、リン酸等の一種又は二種以上を併用又は順次
用いられ、これら水溶液の濃度を０．０２モル以上１．
０以下好ましくは０．１〜０．２モルの範囲で処理する
のがよく、廃活性炭の浸漬時間は少くとも１０分以上好
ましくは３０分以上とするのがよい。The oxygen acid with strong oxidizing power used in the present invention is preferably stable at high temperatures, such as sulfuric acid, nitric acid, chloric acid,
One or more types of perchloric acid, phosphoric acid, etc. are used in combination or sequentially, and the concentration of these aqueous solutions is 0.02 mol or more and 1.
It is preferable to treat the activated carbon in an amount of 0 or less, preferably 0.1 to 0.2 mol, and the immersion time of the waste activated carbon is preferably at least 10 minutes, preferably 30 minutes or more.
この場合前記酸素酸水溶液の濃度が０．０２モル以下で
あると効果がなく再生温度を高めなければならなくなっ
て処理上不経済であり、また０．２モル以上でも悪くは
ないが経済上その必要はなく前記範囲内で十分有効に処
理できるものである。In this case, if the concentration of the oxygen acid aqueous solution is less than 0.02 mol, it will not be effective and the regeneration temperature will have to be raised, which is uneconomical in terms of processing. It is not necessary and can be treated effectively within the above range.
また酸素酸水溶液は一応常温で処理してあるが例えば１
０〜１００℃の状態下で処理してもよい。In addition, although the oxygen acid aqueous solution is treated at room temperature, for example, 1
The treatment may be carried out at a temperature of 0 to 100°C.
さらに廃活性炭の浸漬時間は活性炭の表面積の大小によ
って異なるが活性炭に浸透が効果的に行いうる時間であ
ればよく浸漬時に振動作用などの浸透性を効果的にする
手段を加えれば時間の短縮する方向に持っていくことが
できるし、また浸漬後廃活性炭を機械的に脱液するのも
有効である。Furthermore, the soaking time for waste activated carbon varies depending on the size of the surface area of the activated carbon, but it is sufficient as long as it can effectively penetrate the activated carbon, and the time can be shortened by adding a means to increase permeability, such as vibration, during soaking. It is also effective to mechanically deliquify the waste activated carbon after soaking.
第１図の通電式活性炭再生装置の例について説明すると
電源２に連結した黒鉛電極１，１を有する再生槽３の活
性炭収納室底部に砂利層４を設け，この上方に廃活性炭
５が充填されるように前記砂利層４に開口した流路６が
蒸気発生部７に連結してあり加熱源８によって発生する
蒸気が前記廃活性炭５中に給送されるようになっていて
電気は電極を通して電極間に詰めた廃活性炭層を通るこ
とによってジュール熱が発生し、この熱によって活性炭
を加熱し、乾燥、脱着を行ない、水蒸気発生装置で発生
させた水蒸気を再生装置の下部から活性炭層に吹き込ん
で活性炭を賦活する。To explain an example of the energized activated carbon regeneration device shown in FIG. 1, a gravel layer 4 is provided at the bottom of the activated carbon storage chamber of a regeneration tank 3 having graphite electrodes 1, 1 connected to a power source 2, and waste activated carbon 5 is filled above this layer. A channel 6 opened in the gravel layer 4 is connected to a steam generating section 7 so that steam generated by a heating source 8 is fed into the waste activated carbon 5, and electricity is passed through the electrodes. Joule heat is generated by passing through the waste activated carbon layer packed between the electrodes, which heats the activated carbon, dries it, and desorbs it.The steam generated by the steam generator is blown into the activated carbon layer from the bottom of the regenerator. Activate the activated carbon.
図中９は温度検知器で検知信号によって自動制御できる
ようにするのが合理的である。In the figure, 9 is a temperature sensor, and it is reasonable to automatically control the temperature using a detection signal.
１０は酸素酸水溶液浸漬工程、１１は脱液工程で必要に
応じ加えられる。Reference numeral 10 is added in the oxygen-acid aqueous solution dipping step, and reference numeral 11 is added in the dehydration step as needed.
次に本発明の実施例と本発明法で処理しない例について
対比して示す。Next, examples of the present invention and examples not treated by the method of the present invention will be compared.
ポリエチレングリコールを活性炭重量の約２５チ吸着し
た廃活性炭（含水率３３チ）を対象に第１図示例の如き
再生装置を使用し、再生温度３５０℃から８５０℃まで
の各種温度にそれぞれ３０分間保持し、次のような条件
で各種再生を行なつた。Waste activated carbon (moisture content: 33 inches) that has adsorbed about 25 inches of polyethylene glycol by weight on activated carbon is used in a regeneration device as shown in the first example, and held at various regeneration temperatures from 350 degrees Celsius to 850 degrees Celsius for 30 minutes each. Various regenerations were carried out under the following conditions.
Ｎｏ．ｌ：廃活性炭を硫酸０．２モルの水溶液中に浸漬
し、約１時間放置したのち脱水し、これ
を再生。No. l: Waste activated carbon is immersed in an aqueous solution of 0.2 mol of sulfuric acid, left for about 1 hour, dehydrated, and regenerated.
Ｎｏ．２：廃活性炭を硫酸０．０２モルの水溶液中に浸
漬し約１時間放置したのち脱水し、これ
を再生。No. 2: Waste activated carbon was immersed in an aqueous solution of 0.02 mol of sulfuric acid, left for about 1 hour, dehydrated, and regenerated.
Ｎｏ．３：廃活性炭を硫酸水溶液に浸漬せず、そのまま
再生し、水蒸気を吹き込んで再生。No. 3: Regenerate waste activated carbon as it is without immersing it in an aqueous sulfuric acid solution, and then regenerate it by blowing steam into it.
Ｎｏ．４：廃活性炭を硫酸水溶液に浸漬せず、また水蒸
気吹込みを行なわずに再生。No. 4: Regenerate waste activated carbon without immersing it in an aqueous sulfuric acid solution or blowing in steam.
これらＮｏ．■■■■の各再生により再生された活性炭
の１２価（ヨウ素価）及びＭ．Ｂ．Ｎ．（メチレン・ブ
ルー・ナンバー）と加熱温度との関係は第２図及び第３
図に示した通りであり、Ｉ２価、Ｍ．Ｂ．Ｎ．ともにＮ
ｏ．１の再生方法では４００℃程度の低温で新炭の値に
まで回復し、Ｎｏ．２の再生方法では５８０℃程度で新
炭の値まで回復した。These No. 12 valence (iodine value) and M. B. N. The relationship between (methylene blue number) and heating temperature is shown in Figures 2 and 3.
As shown in the figure, I2 valence, M. B. N. Both N
o. In the regeneration method No. 1, the value was recovered to that of fresh coal at a low temperature of about 400°C, and No. In the second regeneration method, the value of the new coal was recovered at about 580°C.
しかるにＮｏ．３の再生方法ではＩ２価、ＭＢＮを新炭
の値まで戻すには加熱温度を７００℃にしなくてはなら
ず、Ｎｏ．４の再生方法では８００℃を要した。However, No. In the regeneration method No. 3, the heating temperature must be raised to 700°C to return the I2 value and MBN to the values of fresh coal. Regeneration method 4 required 800°C.
また、これらの再生に要した電力量を第１表に示したが
、この電力量には１ｋｇの活性炭（水分、被吸着質を除
いた炭として）が再生（乾燥、脱着、賦活）に要するす
べての電力を含んでいる。Table 1 shows the amount of electricity required for these regenerations. Contains all power.
また、第２表は上記再生に使用した廃活性炭と新炭の■
２価及びＭ．Ｂ．Ｎ．を示すものである。In addition, Table 2 shows the waste activated carbon and new coal used for the above recycling.
Bivalent and M. B. N. This shows that.
以上述べたように本発明の方法では、通電式活性炭再生
法において、あらかじめ廃活性炭を酸化力の強い酸素酸
水溶液中に浸漬するのみで、低温で再生することができ
、したがって再生に要する電力も節減でき、さらに水蒸
気吹込みを行なう必要も特になく、極めて効率よく再生
できるものである。As described above, in the method of the present invention, waste activated carbon can be regenerated at a low temperature by simply immersing the waste activated carbon in an oxygen acid aqueous solution with strong oxidizing power in advance, and therefore the electric power required for regeneration can be reduced. It can save money, and there is no particular need to blow in steam, and it can be regenerated extremely efficiently.
再活性化に高度の技術や経費を必要としないで処理でき
、その処理量も大きく能率的に行うことができる有用性
があり、操業条件並びに工程管理面でも簡略化できるも
のである。Reactivation does not require sophisticated technology or expense, and it is useful in that it can be processed in large quantities and efficiently, and can simplify operating conditions and process control.
第１図は通電式活性炭再生装置の一例を示す系統説明図
、第２図は■２価と加熱温度との関係を示す線図、第３
図はＭＢＮと加熱温度との関係を示す線図である。
１……黒鉛電極、２……電源、３……再生槽、４……砂
利層、５……廃活性炭、６……流路、７……蒸気発生部
、８……加熱源、９……温度検知器、１０……酸素酸水
溶液浸漬工程、１１……脱液工程。Figure 1 is a system diagram showing an example of an energized activated carbon regeneration device, Figure 2 is a diagram showing the relationship between divalence and heating temperature, and Figure 3 is a diagram showing the relationship between divalence and heating temperature.
The figure is a diagram showing the relationship between MBN and heating temperature. DESCRIPTION OF SYMBOLS 1...graphite electrode, 2...power supply, 3...regeneration tank, 4...gravel layer, 5...waste activated carbon, 6...channel, 7...steam generation section, 8...heating source, 9... ...Temperature detector, 10... Oxygen acid aqueous solution immersion process, 11... Liquid removal process.
Claims (1)
てジュール熱を発生させて廃活性炭を加熱再生する方法
において、あらかじめ廃活性炭を酸化力の強い酸素酸水
溶液に浸漬したるのち通電して処理することを特徴とす
る活性炭の再生方法。 ２ 前記酸化力の強い酸素酸水溶液濃度を０．０２モル
以上として処理する特許請求の範囲第１項記載の活性炭
の再生方法。 ３ 前記酸素酸水溶液が濃度０．１〜０．２モルの範囲
内で用いられる特許請求の範囲第１項記載の活性炭の再
生方法。 ４ 前記廃活性炭を酸化力の強い酸素酸水溶液に３０分
以上浸漬して処理する特許請求の範囲第１項記載の活性
炭の再生方法。 ５ 前記酸化力の強い酸素酸として硫酸、硝酸塩素酸、
通塩素酸又はリン酸の群から選ばれた少くとも一つを使
用する特許請求の範囲第２項、第３項又は第４項記載の
活性炭の再生方法。[Claims] 1. In a method of heating and regenerating waste activated carbon by passing an electric current through the used waste activated carbon that has adsorbed organic matter to generate Joule heat, the waste activated carbon is immersed in an oxygen acid aqueous solution with strong oxidizing power in advance, and then A method for regenerating activated carbon characterized by treatment by applying electricity. 2. The method for regenerating activated carbon according to claim 1, wherein the concentration of the highly oxidizing oxygen acid aqueous solution is set to 0.02 mol or more. 3. The method for regenerating activated carbon according to claim 1, wherein the oxygen acid aqueous solution is used in a concentration range of 0.1 to 0.2 mol. 4. The activated carbon regeneration method according to claim 1, wherein the waste activated carbon is treated by immersing it in an oxygen acid aqueous solution with strong oxidizing power for 30 minutes or more. 5 As the oxygen acid with strong oxidizing power, sulfuric acid, nitric acid, chloric acid,
The method for regenerating activated carbon according to claim 2, 3, or 4, wherein at least one selected from the group of chloric acid or phosphoric acid is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7761576A JPS5813490B2 (en) | 1976-06-30 | 1976-06-30 | How to regenerate activated carbon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7761576A JPS5813490B2 (en) | 1976-06-30 | 1976-06-30 | How to regenerate activated carbon |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS533991A JPS533991A (en) | 1978-01-14 |
| JPS5813490B2 true JPS5813490B2 (en) | 1983-03-14 |
Family
ID=13638810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7761576A Expired JPS5813490B2 (en) | 1976-06-30 | 1976-06-30 | How to regenerate activated carbon |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5813490B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS553827A (en) * | 1978-06-26 | 1980-01-11 | Soken Kagaku Kk | Method and apparatus for electrolytic treatment of waste water |
| US4624937A (en) * | 1984-05-10 | 1986-11-25 | Monsanto Company | Process for removing surface oxides from activated carbon catalyst |
| US7217378B2 (en) * | 2003-09-10 | 2007-05-15 | Council Of Scientific & Industrial Research | Simple and efficient process for the preparation of pencil lead from spent pot-liners |
| JP2014004511A (en) * | 2012-06-22 | 2014-01-16 | Daiki Ataka Engineering Co Ltd | Method for regenerating activated carbon |
-
1976
- 1976-06-30 JP JP7761576A patent/JPS5813490B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS533991A (en) | 1978-01-14 |
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