JP2018008245A - Regeneration device of absorbent - Google Patents
Regeneration device of absorbent Download PDFInfo
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- JP2018008245A JP2018008245A JP2016140469A JP2016140469A JP2018008245A JP 2018008245 A JP2018008245 A JP 2018008245A JP 2016140469 A JP2016140469 A JP 2016140469A JP 2016140469 A JP2016140469 A JP 2016140469A JP 2018008245 A JP2018008245 A JP 2018008245A
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Abstract
Description
この発明は、工場排水やプール水その他の各種の水を浄化する吸着剤の再生装置に関するものである。 The present invention relates to an adsorbent regenerator that purifies factory wastewater, pool water, and other various types of water.
従来、下水、下水処理水、各種産業排水、湖沼水、河川水など、種々のＣＯＤ含有排水が含有するＣＯＤ成分を高度に除去する新規処理方法に関する提案があった（特許文献１）。
すなわち、ＣＯＤを除去するための従来の最も代表的な除去技術は、凝集沈殿法である。この技術は、原水に硫酸アルミニウム、ＰＡＣ、塩化第２鉄、硫酸第２鉄、ポリ硫酸第２鉄などの無機凝集剤を添加して攪拌し、ＣＯＤを取り込んだフロックを形成させたのちフロックを沈殿させ、浄化処理水を得る技術である。無機凝集剤を添加して凝集フロックを形成させた後、フロックを分離する凝集沈殿などの凝集分離法は、簡単な装置、操作でＣＯＤが効果的に除去できることが特徴である。 しかし、大量の難脱水性凝集分離汚泥が発生し、その処理処分が非常に面倒であるという重大な欠点がある。一方、ＣＯＤを高度に除去する場合は、凝集沈殿処理水に対し、活性炭吸着処理が行われるが、活性炭の再生が高額かつ煩雑であり、下水処理への実規模での実施例はない。
このように、活性炭の再生は利便性の面から満足がいくものではないという問題があった。
Conventionally, there has been a proposal relating to a novel treatment method for highly removing COD components contained in various COD-containing wastewaters such as sewage, sewage treated water, various industrial wastewaters, lake water, and river water (Patent Document 1).
That is, the most typical conventional removal technique for removing COD is a coagulation precipitation method. In this technology, an inorganic flocculant such as aluminum sulfate, PAC, ferric chloride, ferric sulfate, or polyferric ferric sulfate is added to the raw water and stirred to form a floc that incorporates COD. It is a technology for obtaining purified treated water by precipitation. An aggregation separation method such as aggregation precipitation that separates flocs after adding an inorganic flocculant to form aggregated flocs is characterized in that COD can be effectively removed with a simple apparatus and operation. However, there is a serious drawback that a large amount of hardly dewatering flocculated and separated sludge is generated and its disposal is very troublesome. On the other hand, when COD is highly removed, activated carbon adsorption treatment is performed on the coagulated sediment treated water. However, regeneration of activated carbon is expensive and complicated, and there is no actual scale example for sewage treatment.
Thus, there has been a problem that the regeneration of activated carbon is not satisfactory in terms of convenience.
そこでこの発明は、従来よりも再生が利便性の面から満足のいくものである吸着剤の再生装置を提供しようとするものである。 Therefore, the present invention is intended to provide an adsorbent regenerating apparatus in which regeneration is more satisfactory than conventional methods.
前記課題を解決するためこの発明では次のような技術的手段を講じている。（１）この発明の吸着剤の再生装置は、吸着剤を再生するため賦活槽を有し、前記賦活槽に送る熱風を循環するようにし、前記賦活槽を回転して吸着剤を後方へと移送すると共に、支持体と賦活槽との回転係合域の径を前記賦活槽の外周径に対して絞ったことを特徴とする。 In order to solve the above problems, the present invention takes the following technical means. (1) The adsorbent regeneration apparatus of the present invention has an activation tank for regenerating the adsorbent, circulates hot air sent to the activation tank, rotates the activation tank, and moves the adsorbent backward. While being transferred, the diameter of the rotation engagement area between the support and the activation tank is narrowed with respect to the outer diameter of the activation tank.
前記吸着剤として、例えば活性炭を使用することが出来る。前記熱風は、例えばガスを燃焼させるバーナーで生成することが出来る。前記賦活槽内の温度は、例えば850〜1,100℃程度に設定することが出来る。
この吸着剤の再生装置は、吸着剤を再生するため賦活槽を有し、前記賦活槽に送る熱風を循環するようにしたので、エネルギー効率が向上することとなる。
また、前記賦活槽を回転して吸着剤を後方へと移送すると共に、支持体と賦活槽との回転係合域の径を前記賦活槽の外周径に対して絞ったので、支持体と賦活槽との回転係合域から外部に漏洩する熱風の量を軽減して吸着剤の再生のエネルギー効率を向上させることが出来る。
前記回転係合域の係合の態様として、嵌合や摺動を例示することが出来る。
As the adsorbent, for example, activated carbon can be used. The hot air can be generated by, for example, a burner that burns gas. The temperature in the activation tank can be set to about 850 to 1,100 ° C., for example.
Since this adsorbent regeneration apparatus has an activation tank for regenerating the adsorbent and circulates hot air sent to the activation tank, the energy efficiency is improved.
In addition, the adsorbent is rotated backward by rotating the activation tank, and the diameter of the rotation engagement area between the support and the activation tank is narrowed with respect to the outer diameter of the activation tank. It is possible to reduce the amount of hot air leaking to the outside from the rotational engagement area with the tank and improve the energy efficiency of the regeneration of the adsorbent.
Examples of the mode of engagement of the rotation engagement area include fitting and sliding.
前記賦活槽を回転して吸着剤を後方へと移送する態様として、内壁に案内条が突設された筒状の賦活槽の回転駆動により順次 移送していくことが出来る。
この吸着剤の再生装置では、吸着平衡となったら吸着剤を高温に昇温して再生することが出来ると共に、吸着剤に付着した汚れ成分を熱分解させることが出来る。
吸着剤に付着した汚れ成分として、有機物を主体としたCOD成分、アンモニア性窒素、硝酸態窒素、亜硝酸態窒素などを例示することが出来る。
As an aspect of rotating the activation tank and transferring the adsorbent backward, the adsorbent can be sequentially transferred by rotational driving of a cylindrical activation tank with a guide strip protruding on the inner wall.
In this adsorbent regeneration apparatus, when the adsorption equilibrium is reached, the adsorbent can be regenerated by raising the temperature to a high temperature, and the soil components adhering to the adsorbent can be thermally decomposed.
Examples of the soil component adhering to the adsorbent include COD components mainly composed of organic substances, ammonia nitrogen, nitrate nitrogen, nitrite nitrogen, and the like.
（２）また、前記賦活槽内を加圧傾向にするようにしてもよい。
このように構成すると、回転係合域から外部の酸素が賦活槽内に流入することにより吸着剤が酸化して消耗することを抑制することが出来る。
（３）更に、前記吸着剤の含水分から蒸発した蒸気により賦活するようにしてもよい。
このように構成すると、吸着剤の含水分を賦活に有効利用することが出来る。含水分の含水率として、湿潤した吸着剤（吸着剤+水分）に対して40〜60重量％が好ましい。
(2) Moreover, you may make it make the inside of the said activation tank into a pressurization tendency.
If comprised in this way, it can suppress that adsorbent oxidizes and is consumed when external oxygen flows in into an activation tank from a rotation engagement area.
(3) Further, activation may be performed by steam evaporated from the moisture content of the adsorbent.
If comprised in this way, the moisture content of adsorption agent can be used effectively for activation. The water content of the water content is preferably 40 to 60% by weight with respect to the wet adsorbent (adsorbent + water).
この発明は上述のような構成であり、次の効果を有する。
吸着剤の再生のエネルギー効率を向上させることが出来るので、従来よりも再生が利便性の面から満足のいくものである吸着剤の再生装置を提供することが出来る。
The present invention is configured as described above and has the following effects.
Since the energy efficiency of regeneration of the adsorbent can be improved, it is possible to provide an adsorbent regeneration apparatus that is more satisfactory in terms of convenience than conventional regeneration.
以下、この発明の実施の形態を図面を参照して説明する。
図１に示すように、この実施形態の吸着剤の再生装置は、吸着剤（図示せず）を再生するため賦活槽1を有し、前記賦活槽1に送る熱風を循環するようにした。Hは、搬送用のフックである。
吸着剤は図示左側の投入口2から供給し、図示右側の排出口3から取り出して再利用するようにしている。前記吸着剤として活性炭を使用した。
Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, the adsorbent regeneration apparatus of this embodiment has an activation tank 1 for regenerating an adsorbent (not shown), and circulates hot air sent to the activation tank 1. H is a hook for conveyance.
The adsorbent is supplied from the inlet 2 on the left side of the figure, and is taken out from the outlet 3 on the right side of the figure and reused. Activated carbon was used as the adsorbent.
前記熱風は、都市ガスを燃焼させるバーナー（図示せず）で生成するようにした。前記熱風は、図示左側の供給口4から装置内に吹き込むようにしている。装置内の温度は、900℃程度に昇温するように設定した。装置の後方に、熱電対Sを設置している。
熱風は図示右側の排気口5から導出して、熱風の供給口4に吹き込むようにして循環している（熱風の帰還経路は図示省略）。帰還経路中に、耐熱ファンを設置してもよい。
The hot air was generated by a burner (not shown) that burns city gas. The hot air is blown into the apparatus from the supply port 4 on the left side of the figure. The temperature in the apparatus was set to increase to about 900 ° C. A thermocouple S is installed behind the device.
The hot air is circulated so as to be led out from the exhaust port 5 on the right side of the drawing and blown into the hot air supply port 4 (the hot air return path is not shown). A heat-resistant fan may be installed in the return path.
また、前記賦活槽1をモータ(M)により回転駆動して吸着剤を後方へと移送すると共に、支持体6と賦活槽1との回転係合域7の径を前記賦活槽1の外周の径に対して絞った。
前記回転係合域7の係合の態様として、この実施例では摺動ではなく非接触の嵌合を採用した。賦活槽1前後の回転係合（嵌合）域7には、互い違いな非接触の隙間により構成したHEPAフィルターを介在させている。
前記賦活槽1を回転して吸着剤を後方へと移送する態様として、内壁に案内条（図示せず）が突設された筒状の賦活槽1の回転駆動により順次 移送していくようにした。
The activation tank 1 is rotated by a motor (M) to move the adsorbent backward, and the diameter of the rotation engagement area 7 between the support 6 and the activation tank 1 is set to the outer circumference of the activation tank 1. Squeezed against the diameter.
As a mode of engagement of the rotation engagement area 7, in this embodiment, non-sliding fitting was adopted instead of sliding. A rotation engagement (fitting) region 7 around the activation tank 1 is provided with a HEPA filter constituted by staggered non-contact gaps.
As a mode in which the activation tank 1 is rotated and the adsorbent is transferred rearward, the adsorbent is sequentially transferred by rotating the cylindrical activation tank 1 having a guide strip (not shown) protruding on the inner wall. did.
また、前記賦活槽1内を加圧傾向にしている。更に、前記吸着剤の含水分から蒸発した蒸気により賦活するようにしている。含水分の含水率として、湿潤した吸着剤（吸着剤+水分）に対して約50重量％としている。
なお、吸着剤の燃焼による目減りを抑制するため窒素ガス、炭酸ガス、アルゴンガスなどの不活性ガスを吹き込んで、吸着剤の活性炭の酸化分解（C+O2→CO2）を抑制するようにしてもよい。
Further, the inside of the activation tank 1 tends to be pressurized. Further, activation is performed by vapor evaporated from the moisture content of the adsorbent. The water content is about 50% by weight with respect to the wet adsorbent (adsorbent + water).
In order to suppress the loss due to combustion of the adsorbent, an inert gas such as nitrogen gas, carbon dioxide gas or argon gas is blown to suppress the oxidative decomposition (C + O 2 → CO 2 ) of the activated carbon of the adsorbent. May be.
次に、この実施形態の吸着剤の再生装置の使用状態を説明する。
この吸着剤の再生装置は、吸着剤を再生するため賦活槽1を有し、前記賦活槽1に送る熱風を循環するようにしたので、エネルギー効率が向上することとなる。
また、前記賦活槽1を回転して吸着剤を後方へと移送すると共に、支持体6と賦活槽1との回転係合域の径を前記賦活槽1の外周径に対して絞ったので、支持体6と賦活槽1との回転係合域7から外部に漏洩する熱風の量を軽減して吸着剤の再生のエネルギー効率を向上させることができ、従来よりも再生が利便性の面から満足のいくものであるという利点を有する。
更に、前記賦活槽1内を加圧傾向にしており、回転係合域7から外部の酸素が賦活槽1内に流入することにより吸着剤が酸化して消耗することを抑制することが出来るという利点を有する。
Next, the usage state of the adsorbent regeneration apparatus of this embodiment will be described.
Since this adsorbent regeneration apparatus has the activation tank 1 for regenerating the adsorbent and circulates the hot air sent to the activation tank 1, the energy efficiency is improved.
In addition, while rotating the activation tank 1 to transfer the adsorbent to the rear, the diameter of the rotation engagement area between the support 6 and the activation tank 1 is narrowed with respect to the outer diameter of the activation tank 1, The amount of hot air leaking outside from the rotational engagement area 7 between the support 6 and the activation tank 1 can be reduced to improve the energy efficiency of adsorbent regeneration, and regeneration is more convenient than before. It has the advantage of being satisfactory.
Furthermore, the inside of the activation tank 1 has a tendency to pressurize, and it can be suppressed that the adsorbent is oxidized and consumed by external oxygen flowing into the activation tank 1 from the rotation engagement region 7. Have advantages.
そのうえ、前記吸着剤の含水分から蒸発した蒸気により賦活するようにしており、吸着剤の含水分を賦活に有効利用することが出来るという利点を有する。
この吸着剤の再生装置では、吸着平衡となったら吸着剤を高温に昇温して再生することが出来ると共に、吸着剤に付着した汚れ成分を熱分解させることが出来た。吸着剤に付着した汚れ成分として、有機物を主体としたCOD成分、アンモニア性窒素、硝酸態窒素、亜硝酸態窒素などを熱分解した。
In addition, it is activated by the vapor evaporated from the moisture content of the adsorbent, and has the advantage that the moisture content of the adsorbent can be effectively used for activation.
In this adsorbent regeneration apparatus, when the adsorption equilibrium is reached, the adsorbent can be regenerated by raising the temperature to a high temperature, and the soil components adhering to the adsorbent can be thermally decomposed. COD components mainly composed of organic substances, ammonia nitrogen, nitrate nitrogen, nitrite nitrogen, etc. were pyrolyzed as dirt components attached to the adsorbent.
従来よりも再生が利便性の面から満足のいくものであることによって、種々の吸着剤の再生装置の用途に適用することができる。 Since regeneration is more satisfactory than conventional methods, it can be applied to various adsorbent regeneration apparatus applications.
１ 賦活槽
６ 支持体
７ 回転係合域
DESCRIPTION OF SYMBOLS 1 Activation tank 6 Support body 7 Rotation engagement area
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| WO2013042280A1 (en) * | 2011-09-21 | 2013-03-28 | 三菱重工環境・化学エンジニアリング株式会社 | Heating processing device |
| JP2015009228A (en) * | 2013-07-02 | 2015-01-19 | 株式会社オメガ | Waste water treatment mechanism |
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|---|---|---|---|---|
| JPS51117974A (en) * | 1975-04-10 | 1976-10-16 | Nippon Chem Plant Consultant:Kk | A method for desorbing the solute adsorbed by an adsorbent |
| JPS5263160U (en) * | 1975-11-05 | 1977-05-10 | ||
| JPS54142194A (en) * | 1978-04-21 | 1979-11-06 | Clairaire Ltd | Manufacture of active carbon |
| JPS56102989A (en) * | 1979-09-12 | 1981-08-17 | Ceag Verfahrenstechnik Gmbh | Method of separating impurity from water |
| JPS58213614A (en) * | 1982-06-08 | 1983-12-12 | Mitsui Mining Co Ltd | Method for producing molded activated coke for desulfurization and denitrification |
| JPH11188259A (en) * | 1997-12-26 | 1999-07-13 | Union Service:Kk | Waste activated carbon regenerator |
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