JP2003081896A - Method for recovering water soluble organic substance from water to be treated - Google Patents
Method for recovering water soluble organic substance from water to be treatedInfo
- Publication number
- JP2003081896A JP2003081896A JP2001269496A JP2001269496A JP2003081896A JP 2003081896 A JP2003081896 A JP 2003081896A JP 2001269496 A JP2001269496 A JP 2001269496A JP 2001269496 A JP2001269496 A JP 2001269496A JP 2003081896 A JP2003081896 A JP 2003081896A
- Authority
- JP
- Japan
- Prior art keywords
- water
- soluble organic
- treated
- recovering
- organic substance
- 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.)
- Withdrawn
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
Landscapes
- Physical Water Treatments (AREA)
- Extraction Or Liquid Replacement (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、水中に溶解してい
る水可溶性有機物を分離回収する方法、特に、石油精製
施設、石炭・タール処理施設、バイオマス処理施設、製
紙工場、染料工場、石油化学工場などの工業用廃水から
水可溶性有機物を緩和な条件で分離回収する方法に関す
る。TECHNICAL FIELD The present invention relates to a method for separating and recovering water-soluble organic matter dissolved in water, and in particular, a petroleum refining facility, a coal / tar processing facility, a biomass processing facility, a paper manufacturing factory, a dye factory, a petrochemical. The present invention relates to a method for separating and recovering water-soluble organic matter from industrial wastewater such as factories under mild conditions.
【０００２】[0002]
【従来の技術】水中に含まれる水可溶性有機物の回収は
水の蒸留、または、ヘプタンのような脂肪族炭化水素ま
たはトルエンのような芳香族炭化水素などの溶剤による
抽出で行われてきた。しかし、これらの方法では、抽出
物を単離する際に溶剤の蒸留が必須であり、また、加熱
及び蒸気の冷却による冷却に多大のエネルギーを必要と
するという難点があった。2. Description of the Related Art Recovery of water-soluble organic substances contained in water has been carried out by distillation of water or extraction with a solvent such as an aliphatic hydrocarbon such as heptane or an aromatic hydrocarbon such as toluene. However, these methods have a drawback that distillation of the solvent is essential when the extract is isolated, and a large amount of energy is required for heating and cooling by cooling the steam.
【０００３】[0003]
【発明が解決しようとする課題】その回収に多量のエネ
ルギーを消費する蒸留工程を省けエネルギー消費量を大
幅に軽減し得る緩和な条件で、被処理水からそれに含ま
れる水可溶性有機物を工業的に有利に回収する方法を提
供することを目的とする。The water-soluble organic substance contained in the water to be treated is industrially produced under the mild condition that the distillation step which consumes a large amount of energy for the recovery can be omitted and the energy consumption can be greatly reduced. It is an object to provide a method for recovering with advantage.
【０００４】[0004]
【課題を解決するための手段】本発明者らは、抽出剤と
して特定な抽出剤を用いると上記課題が解決できること
を見いだし本発明を完成するに至った。すなわち、本発
明によれば、以下の発明が提供される。
（１） 常温常圧での水への溶解度が20%以下の水可溶
性有機物を含む被処理水に液化ジメチルエーテルを接触
させ、被処理水に含まれる水可溶性有機物を液化ジメチ
ルエーテル相に抽出することを特徴とする被処理水から
の水可溶性有機物の回収方法。
（２） 常温常圧での水への溶解度が20%以下の水可溶
性有機物を含む被処理水が、工業用排水であることを特
徴とする上記（１）記載の被処理水からの水可溶性有機
物の回収方法。
（３） 工業用排水が、石油精製施設、石炭・タール処
理施設、バイオマス処理施設、製紙工場、染料工場、石
油化学工場から選ばれた少なくとも一種であることを特
徴とする前記（１）又は（２）記載の被処理水からの水
可溶性有機物の回収方法。
（４） 工業用排水が、含酸素化合物及び／又は含窒素
化合物であることを特徴とする前記（２）又は（３）記
載の被処理水からの水可溶性有機物の回収方法。
（５） 含酸素化合物が、フェノール類、フラン類及び
炭素数４以上のアルコール類から選ばれた少なくとも一
種であり、含窒素化合物が、アニリン類、ピロール類、
キノリン類及びインドール類から選ばれた少なくとも一
種であることを特徴とする前記（４）記載の被処理水か
らの水可溶性有機物の回収方法。The present inventors have found that the above problems can be solved by using a specific extractant as the extractant, and have completed the present invention. That is, according to the present invention, the following inventions are provided. (1) Extracting the water-soluble organic matter contained in the water to be treated into a liquefied dimethyl ether phase by bringing the liquefied dimethyl ether into contact with the water to be treated containing the water-soluble organic matter having a water solubility of 20% or less at room temperature and normal pressure. A method for recovering a water-soluble organic substance from water to be treated, which is characterized. (2) Water-soluble from the water to be treated according to the above (1), wherein the water to be treated containing the water-soluble organic matter having a solubility in water at room temperature and atmospheric pressure of 20% or less is industrial wastewater. Organic matter recovery method. (3) The industrial wastewater is at least one selected from a petroleum refining facility, a coal / tar processing facility, a biomass processing facility, a paper factory, a dye factory, and a petrochemical factory, (1) or ( 2) A method for recovering a water-soluble organic substance from the water to be treated described above. (4) The method for recovering a water-soluble organic substance from water to be treated according to (2) or (3), wherein the industrial wastewater is an oxygen-containing compound and / or a nitrogen-containing compound. (5) The oxygen-containing compound is at least one selected from phenols, furans, and alcohols having 4 or more carbon atoms, and the nitrogen-containing compound is aniline, pyrrole,
The method for recovering a water-soluble organic substance from water to be treated according to (4) above, which is at least one selected from quinolines and indoles.
【０００５】本発明方法は、水可溶性有機物を含む被処
理水を液化ジメチルエーテルに接触させ、それに含まれ
る水可溶性有機物を抽出することを特徴とする。本発明
においては、抽出後、例えば抽出液を常圧に戻し常温常
圧付近で液体状態の水可溶性有機物を回収し、ジメチル
エーテルをガスとして回収した後、回収ガスを加圧して
液体とし、再利用することができ、この圧力スイングに
より、従来必須とされていた、溶剤の回収に多量のエネ
ルギーを消費する蒸留工程を省略でき、そのエネルギー
消費量を大幅に軽減することが可能となる。The method of the present invention is characterized in that treated water containing a water-soluble organic substance is contacted with liquefied dimethyl ether to extract the water-soluble organic substance contained therein. In the present invention, after extraction, for example, the extract is returned to normal pressure to recover the water-soluble organic matter in a liquid state at around room temperature and atmospheric pressure, and after recovering dimethyl ether as a gas, pressurizing the recovered gas to make it a liquid and reusing it. This pressure swing makes it possible to omit the distillation step, which has been indispensable in the past, which consumes a large amount of energy for recovering the solvent, and it is possible to greatly reduce the energy consumption.
【０００６】本発明の対象となる被処理水は、常温常圧
での水への溶解度が20%以下の水可溶性有機物を含むも
のである。このような被処理水の代表例としては、工業
用廃水例えば、石油精製、コールタール製造、バイオマ
ス処理、製紙、染料製造、石炭、石油からの化学薬品製
造に由来するものなどが挙げられる。具体的には、フェ
ノール、アルキルフェノール類、フラン類、アルコール
類、ピロール類、アルキルピリジン類、インドール類、
キノリン類のような、含酸素化合物や含窒素化合物等を
含む被処理水が例示される。この場合、含酸素化合物と
しては、フェノール、クレゾール、キシレノール、レゾ
ルシノールなどのフェノール類、フラン、ベンゾフラン
などのフラン類及びブタノール、ペンタノール、シクロ
ヘキサノールなどの炭素数４以上のアルコール類などが
含まれる。また、含窒素化合物としては、アニリン類、
ピロール類、キノリン類、インドール類などが含まれ
る。The water to be treated which is the object of the present invention contains a water-soluble organic substance having a water solubility of 20% or less at room temperature and atmospheric pressure. Typical examples of such water to be treated include industrial wastewaters such as those derived from petroleum refining, coal tar production, biomass treatment, papermaking, dye production, coal, and chemical production from petroleum. Specifically, phenol, alkylphenols, furans, alcohols, pyrroles, alkylpyridines, indoles,
Examples of the water to be treated include oxygen-containing compounds and nitrogen-containing compounds such as quinolines. In this case, the oxygen-containing compound includes phenols such as phenol, cresol, xylenol, and resorcinol, furans such as furan and benzofuran, and alcohols having 4 or more carbon atoms such as butanol, pentanol, and cyclohexanol. As the nitrogen-containing compound, anilines,
Pyrroles, quinolines, indoles, etc. are included.
【０００７】本発明においては、上記被処理水を抽出剤
である液化ジメチルエーテルと接触させ、水相に含まれ
る水可溶性有機物をジメチエーテル相に移行させる。ジ
メチルエーテルは０．２〜１MPa程度の加圧により簡単
に液化するので、好ましくはこのような加圧条件下でジ
メチルエーテルと被処理水を混合することにより抽出操
作を行う。In the present invention, the water to be treated is brought into contact with liquefied dimethyl ether, which is an extractant, to transfer the water-soluble organic matter contained in the water phase to the dimethyl ether phase. Since dimethyl ether is easily liquefied by applying a pressure of about 0.2 to 1 MPa, it is preferable to carry out the extraction operation by mixing dimethyl ether and water to be treated under such a pressure condition.
【０００８】抽出温度は特に制限はないが、０〜８０℃
好ましくは１０〜５０℃である。抽出時間は被処理水の
種類、水可溶性有機物の含有量などを考慮することによ
り適宜定められる。また、ジメチルエーテルの使用量
は、被処理水の種類、水可溶性有機物の含有量などによ
り異なるが、通常、被処理水１リットルに対して、1〜
５リットル、好ましくは1〜３リットルである。The extraction temperature is not particularly limited, but it is 0 to 80 ° C.
It is preferably 10 to 50 ° C. The extraction time is appropriately determined by considering the type of water to be treated, the content of water-soluble organic matter, and the like. The amount of dimethyl ether used varies depending on the type of water to be treated, the content of water-soluble organic matter, etc., but normally 1 to 1 liter of water to be treated is used.
It is 5 liters, preferably 1 to 3 liters.
【０００９】水可溶性有機物を含むジメチルエーテル抽
出相からそれに含まれる水不溶性有機物を回収するに
は、この抽出相を例えば常圧に戻し水不溶性有機物から
なる液相とジメチルエーテルからなるガス相に分離し、
液相から水不溶性有機物を適宜精製手段で回収すればよ
い。In order to recover the water-insoluble organic matter contained in the dimethyl ether extraction phase containing the water-soluble organic matter, the extraction phase is returned to, for example, normal pressure and separated into a liquid phase consisting of the water-insoluble organic matter and a gas phase consisting of dimethyl ether,
The water-insoluble organic matter may be recovered from the liquid phase by an appropriate purification means.
【００１０】[0010]
【実施例】以下、実施例により本発明を更に詳細に説明
する。
実施例１
被処理水として、フェノール、m-クレゾールをそれぞれ
3.2および1.0wt%含むモデル水溶液を用いた。このモデ
ル水溶液４mlをバッチ式耐圧ガラス容器に入れ、ついで
液化ジメチルエーテル4mlを加え、激しく振盪した。そ
のときの混合系の圧力は0.5MPaであった。この混合系を
30℃に30分維持し抽出を行った。その結果を表１に示
す。EXAMPLES The present invention will be described in more detail below with reference to examples. Example 1 Phenol and m-cresol were respectively used as water to be treated.
A model aqueous solution containing 3.2 and 1.0 wt% was used. 4 ml of this model aqueous solution was placed in a batch type pressure resistant glass container, then 4 ml of liquefied dimethyl ether was added and shaken vigorously. The pressure of the mixed system at that time was 0.5 MPa. This mixed system
Extraction was carried out at 30 ° C. for 30 minutes. The results are shown in Table 1.
【００１１】実施例２
ジメチルエーテルの使用量を6mlに代えた以外は実施例
１と同様な抽出操作を行った。その結果を表１に示す。Example 2 The same extraction operation as in Example 1 was carried out except that the amount of dimethyl ether used was changed to 6 ml. The results are shown in Table 1.
【００１２】表１から原料中のフェノールは容量比１：
１でも70%以上がジメチルエーテル相に抽出されるこ
と、クレゾールは80%以上が抽出されたことが判る。From Table 1, the phenol in the raw material has a volume ratio of 1:
It can be seen that even in No. 1, 70% or more was extracted into the dimethyl ether phase, and 80% or more of cresol was extracted.
【００１３】[0013]
【表１】 [Table 1]
【００１４】[0014]
【発明の効果】本発明方法は、被処理水からそれに含ま
れる水可溶性有機物を、多量のエネルギーを消費する蒸
留工程を用いることなく、簡便な抽出操作で回収するこ
とができるので、消費エネルギーの少ない緩和な工業的
に有利な方法ということができる。INDUSTRIAL APPLICABILITY According to the method of the present invention, the water-soluble organic matter contained in water to be treated can be recovered by a simple extraction operation without using a distillation step which consumes a large amount of energy. It can be said that the method is mild and industrially advantageous.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０７Ｃ 39/07 Ｃ０７Ｃ 39/07 Ｆターム(参考） 4D037 AA11 AB11 AB12 AB16 BA11 4D056 AB18 AB19 AC07 4H006 AA02 AD16 FC52 FE13 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) C07C 39/07 C07C 39/07 F term (reference) 4D037 AA11 AB11 AB12 AB16 BA11 4D056 AB18 AB19 AC07 4H006 AA02 AD16 FC52 FE13
Claims (5)
水可溶性有機物を含む被処理水に液化ジメチルエーテル
を接触させ、被処理水に含まれる水溶性有機物を液化ジ
メチルエーテル相に抽出することを特徴とする被処理水
からの水溶性有機物の回収方法。1. A liquefied dimethyl ether is contacted with water to be treated containing a water-soluble organic matter having a water solubility of 20% or less at room temperature and atmospheric pressure, and the water-soluble organic matter contained in the water to be treated is extracted into a liquefied dimethyl ether phase. A method for recovering a water-soluble organic substance from water to be treated, which is characterized by the above.
水可溶性有機物を含む被処理水が、工業用排水であるこ
とを特徴とする請求項１記載の被処理水からの水可溶性
有機物の回収方法。2. The water from the treated water according to claim 1, wherein the treated water containing a water-soluble organic substance having a solubility in water at room temperature and atmospheric pressure of 20% or less is industrial wastewater. Method for recovering soluble organic matter.
ール処理施設、バイオマス処理施設、製紙工場、染料工
場、石油化学工場から選ばれた少なくとも一種であるこ
とを特徴とする請求項１又は２記載の被処理水からの水
可溶性有機物の回収方法。3. The industrial wastewater is at least one selected from a petroleum refining facility, a coal / tar processing facility, a biomass processing facility, a paper manufacturing factory, a dye factory, and a petrochemical factory. 2. The method for recovering a water-soluble organic substance from water to be treated according to 2.
含窒素化合物を含むことを特徴とする請求項２又は３記
載の被処理水からの水可溶性有機物の回収方法。4. The method for recovering a water-soluble organic substance from treated water according to claim 2, wherein the industrial wastewater contains an oxygen-containing compound and / or a nitrogen-containing compound.
類及び炭素数４以上のアルコール類から選ばれた少なく
とも一種であり、含窒素化合物が、アニリン類、ピロー
ル類、キノリン類及びインドール類から選ばれた少なく
とも一種であることを特徴とする請求項４記載の被処理
水からの水可溶性有機物の回収方法。5. The oxygen-containing compound is at least one selected from phenols, furans and alcohols having 4 or more carbon atoms, and the nitrogen-containing compound is selected from anilines, pyrroles, quinolines and indoles. 5. The method for recovering water-soluble organic matter from water to be treated according to claim 4, wherein the water-soluble organic matter is at least one of the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001269496A JP2003081896A (en) | 2001-09-05 | 2001-09-05 | Method for recovering water soluble organic substance from water to be treated |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001269496A JP2003081896A (en) | 2001-09-05 | 2001-09-05 | Method for recovering water soluble organic substance from water to be treated |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003081896A true JP2003081896A (en) | 2003-03-19 |
Family
ID=19095307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001269496A Withdrawn JP2003081896A (en) | 2001-09-05 | 2001-09-05 | Method for recovering water soluble organic substance from water to be treated |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003081896A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100375719C (en) * | 2006-03-21 | 2008-03-19 | 浙江工业大学 | Method of treating phencyclic compound waste water using liquid-liquid extraction |
| JP2010222297A (en) * | 2009-03-24 | 2010-10-07 | Sanwa Yuka Kogyo Kk | Method for recovering pyrrole from pyrrole-containing waste water |
| JP2012035180A (en) * | 2010-08-05 | 2012-02-23 | Sumitomo Metal Mining Co Ltd | Treatment method for valuable metal recovery treatment liquid |
| JP2020006357A (en) * | 2018-06-29 | 2020-01-16 | 株式会社リコー | Liquid manufacturing method and liquid manufacturing device |
-
2001
- 2001-09-05 JP JP2001269496A patent/JP2003081896A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100375719C (en) * | 2006-03-21 | 2008-03-19 | 浙江工业大学 | Method of treating phencyclic compound waste water using liquid-liquid extraction |
| JP2010222297A (en) * | 2009-03-24 | 2010-10-07 | Sanwa Yuka Kogyo Kk | Method for recovering pyrrole from pyrrole-containing waste water |
| JP2012035180A (en) * | 2010-08-05 | 2012-02-23 | Sumitomo Metal Mining Co Ltd | Treatment method for valuable metal recovery treatment liquid |
| JP2020006357A (en) * | 2018-06-29 | 2020-01-16 | 株式会社リコー | Liquid manufacturing method and liquid manufacturing device |
| JP7213040B2 (en) | 2018-06-29 | 2023-01-26 | 株式会社アルビオン | Liquid manufacturing method and liquid manufacturing apparatus |
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