JPS62180710A - Method for regenerating oil adsorbent - Google Patents
Method for regenerating oil adsorbentInfo
- Publication number
- JPS62180710A JPS62180710A JP2034386A JP2034386A JPS62180710A JP S62180710 A JPS62180710 A JP S62180710A JP 2034386 A JP2034386 A JP 2034386A JP 2034386 A JP2034386 A JP 2034386A JP S62180710 A JPS62180710 A JP S62180710A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- oil adsorbent
- layer
- water
- solvent
- 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.)
- Pending
Links
- 239000003463 adsorbent Substances 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims description 8
- 230000001172 regenerating effect Effects 0.000 title claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000002904 solvent Substances 0.000 claims abstract description 19
- 238000001179 sorption measurement Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims 1
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 abstract description 39
- 229920000098 polyolefin Polymers 0.000 abstract description 3
- 239000008187 granular material Substances 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 67
- 238000011069 regeneration method Methods 0.000 description 15
- 230000008929 regeneration Effects 0.000 description 12
- 238000004140 cleaning Methods 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 6
- 239000002594 sorbent Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000010721 machine oil Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010913 used oil Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
Description
【発明の詳細な説明】 、 の］ 。[Detailed description of the invention] , of] .
本発明は、油水分離装置内□に使用され、油分を吸着し
て油分除去性能が低下：した油吸着剤を再生する方法に
関する。The present invention relates to a method for regenerating an oil adsorbent used in an oil/water separator that adsorbs oil and has degraded oil removal performance.
従来垂肢土
水力発電所の発電機器や配置管系統等からは機械油が少
量リークするが、この：油分を含む排水（ヘキサン抽出
量１０■／ｌ程度）を処理するのに、従来、通常、吸着
法が用いられてきた。油吸着剤は、油分を吸着し続けて
破過した時点で全量を新品と交換し、使用済みの油吸着
剤は廃棄処分されていた。油吸着剤の種類にもよるが、
油吸着剤は使い始めて約１年で破過することが多く、ラ
ンニングコストが高くつくという欠点を有していた。Conventionally, a small amount of machine oil leaks from the power generation equipment and piping system of the Ashido hydroelectric power plant, but in the past, conventional methods were used to treat this oil-containing wastewater (hexane extraction amount of about 10 μ/l). , adsorption methods have been used. The oil adsorbent continues to adsorb oil, and when it reaches a breakthrough, the entire amount is replaced with a new one, and the used oil adsorbent is disposed of. It depends on the type of oil adsorbent, but
Oil adsorbents often break through after about a year of use, and have the disadvantage of high running costs.
従って、破過した油吸着剤を再生する研究がなされ、遠
心分離による方法（特開昭４９−２９２８２号公報参照
）や吸引パイプによる方法（特開昭５３−５３０６６号
公報参照）が提案されている。Therefore, research has been conducted to regenerate the breakthrough oil adsorbent, and a method using centrifugation (see JP-A-49-29282) and a method using a suction pipe (see JP-A-53-53066) have been proposed. There is.
八 （°シよ゛と る口 占
しかしながら、いずれの再生方法も、再生効果が小さく
、よりよい再生方法を確立することが望まれている。However, each regeneration method has a small regeneration effect, and it is desired to establish a better regeneration method.
従って、本発明は、油分除去性能の低下した油吸着剤を
効率よく、かつ安価に再生する方法を提供することを目
的とする。Therefore, an object of the present invention is to provide a method for efficiently and inexpensively regenerating an oil adsorbent whose oil removal performance has decreased.
、占オ ・′ の
本発明は、油吸着剤層の水を排除し、油吸着剤層を通風
乾燥した後、溶剤で油分を抽出することによって前記の
問題点を解決したものである。The present invention of Zhano ・' solves the above-mentioned problems by removing water from the oil adsorbent layer, drying the oil adsorbent layer through ventilation, and then extracting the oil with a solvent.
叩ち、本発明による油吸着剤の再生方法は、油吸着剤層
の水を排除した後、まず、空気を通して油吸着剤を乾燥
させ、次いで、溶剤を用いて油吸着剤を再生することを
特徴とする。The oil sorbent regeneration method according to the present invention involves first drying the oil sorbent by passing air through it, after eliminating the water in the oil sorbent layer, and then using a solvent to regenerate the oil sorbent. Features.
油吸着剤としては、親油性のポリオレフィン系高分子化
合物を主成分とする粒伏物が繁用されているが、これに
限定されるものではな（、油吸着能の大きいフェルト状
或いは繊維状のものも使用され、本発明はこれらに対し
ても有効である。Granules containing lipophilic polyolefin polymer compounds as the main component are often used as oil adsorbents, but they are not limited to these (felt-like or fibrous materials with high oil-absorbing ability) are often used. These are also used, and the present invention is also effective for these.
また、溶剤としては、油を熔解しうる任意の有機溶剤を
使用することができ、例えばヘキサン、べ、、、ンジン
、ガソリン、石油エーテル等が挙げられる。Further, as the solvent, any organic solvent capable of dissolving oil can be used, such as hexane, gasoline, petroleum ether, etc.
爽嵐胤
次に、実施例に基づいて本発明を詳述するが、本発明は
これに限定されるものではない。Next, the present invention will be described in detail based on Examples, but the present invention is not limited thereto.
実施例１
粒径２〜３鶴の市販のポリオレフィン系油吸着剤を内径
５０龍、高さ１５００−鳳の透明塩ビ製カラムに充填層
高が８００ ｉｎになるように充議し、機械油を清水に
添加して油分濃度を１０■／ｅに調整した油分含を模擬
液を用いて、油分除去連続通水実験を、処理線速度５
ｍ ／ ｈで行った。Example 1 A commercially available polyolefin oil adsorbent with a particle size of 2 to 3 mm was packed into a transparent PVC column with an inner diameter of 50 mm and a height of 1500 mm so that the packed bed height was 800 inches, and machine oil was added. An oil removal continuous water flow experiment was conducted using a simulating oil containing liquid added to clean water to adjust the oil concentration to 10 μ/e at a processing linear speed of 5
I went at m/h.
その結果、第１図に示すように、通水後１９０日経過し
たときに、処理水の油分濃度が上昇し始めたので、通水
後２００日経過したときに、第２図に示したフローシー
トにより油吸着剤の再生実験を行った。As a result, as shown in Figure 1, the oil concentration of the treated water began to rise 190 days after water flow, so 200 days after water flow, the flow rate shown in Figure 2 An oil adsorbent regeneration experiment was conducted using a sheet.
即ち、まず、ドレーンバルブ１２を開いて油吸着剤層２
から水を抜き、ドレーンバルブＩ２を閉じる。次に、バ
ルブ８を開いて、空気配管７がら空気を油吸着剤層２に
供給して油吸着剤層を乾燥させる。バルブ８を閉じた後
、ヘキサンを貯蔵した溶剤槽３から溶剤４としてのヘキ
サンを油吸着剤層に供給するために、洗浄ポンプ５を作
動して油吸着剤層の膨張率が３０％になる洗浄流４６０
ｍ ／ ｈの上向流で６０分間、ヘキサンを油吸着剤層
と溶剤槽との間で循環させた。９は溶剤戻り配管である
。That is, first, open the drain valve 12 and drain the oil adsorbent layer 2.
Drain the water from the tank and close drain valve I2. Next, the valve 8 is opened and air is supplied to the oil adsorbent layer 2 through the air pipe 7 to dry the oil adsorbent layer. After closing the valve 8, the cleaning pump 5 is operated to supply hexane as the solvent 4 from the solvent tank 3 storing hexane to the oil adsorbent layer, so that the expansion rate of the oil adsorbent layer becomes 30%. Washing flow 460
Hexane was circulated between the oil sorbent layer and the solvent bath for 60 min with an upward flow of m/h. 9 is a solvent return pipe.
その後、ドレーンバルブ１２を開いて、ヘキサンをカラ
ム１から排除し、再び油分含有模擬液を原水配管１０よ
りカラム１に下向流で通水したところ、第１図に示した
ように、油分除去性能は通水当初の状態まで戻り、更に
通水を続けても良好な油分除去性能を維持した。１１は
処理水配管である。After that, the drain valve 12 was opened to remove hexane from the column 1, and the oil-containing simulated liquid was again passed through the column 1 from the raw water pipe 10 in a downward flow. As shown in Fig. 1, the oil was removed. The performance returned to the state at the time of water flow, and even after water flow continued, good oil removal performance was maintained. 11 is a treated water pipe.
比絞例１ 。Ratio example 1.
実峰例１と同じ通水実験を行い、更に、油吸着剤層の通
風乾燥を行わない以外は、実施例１と同様にして油吸着
剤の再生実験を行った。The same water flow experiment as in Example 1 was conducted, and an oil adsorbent regeneration experiment was conducted in the same manner as in Example 1, except that the oil adsorbent layer was not ventilated and dried.
その後、再び油分含有模擬液を下向流で通水したところ
、第１図に示すように油分除去性能は、通水当初の状態
まで戻らず、実施例１よりもがなり悪かった。 。Thereafter, when the oil-containing simulated liquid was again passed in a downward flow, the oil removal performance did not return to the state at the time of water passage, as shown in FIG. 1, and was worse than in Example 1. .
実施例２ ・ ：
実施例１で用いたのと同じ油膜１若剤を用いて、同じ通
水条件で油分除去連続通水実験を行ったところ、・・・
通水後１００日経過したどきに、処理水油分濃度が上昇
した。そこで第４図に示したフローシートにより油吸着
剤の再、生実験を行った。Example 2 ・: Using the same oil film 1 youth agent used in Example 1, an oil removal continuous water flow experiment was conducted under the same water flow conditions.
After 100 days had passed since the water flow, the oil concentration in the treated water increased. Therefore, an oil adsorbent regeneration experiment was conducted using the flow sheet shown in FIG.
即ち、バルブ１９を閉じて原水配管１０．からの原水の
流入を止めた後、バルブ１３及びバルブ１２を開いて油
吸着剤層２の水を排除する。その後、バルブ１２と１８
を閉じ、バルブ８を開けて３ｋｇ／ｃｔＡの圧力の空気
を油吸着剤層２に３０分間送り、油吸着剤層２を乾燥さ
せる。次に、バルブ１５を開け、洗浄ポンプ５１を作動
して油吸着剤層２の膨張率が３０％になる洗浄流速６０
ｍ／ｈで上向流で６０分間、溶剤４としてのへキサ・ン
を、循環配管１７を介して油吸着剤層２と溶剤・槽３と
の間で循環させた。この後、洗浄ポンプ５を止め、サイ
フオンの作用を利用して油吸着剤層２のへキサンを溶剤
槽３に戻し、バルブ１３を閉じる。That is, the valve 19 is closed and the raw water pipe 10. After stopping the inflow of raw water, the valves 13 and 12 are opened to remove water from the oil adsorbent layer 2. Then valves 12 and 18
is closed, the valve 8 is opened, and air at a pressure of 3 kg/ctA is sent to the oil adsorbent layer 2 for 30 minutes to dry the oil adsorbent layer 2. Next, the valve 15 is opened, the cleaning pump 51 is activated, and the cleaning flow rate is set to a cleaning flow rate 60 such that the expansion rate of the oil adsorbent layer 2 is 30%.
Hexane as the solvent 4 was circulated between the oil adsorbent layer 2 and the solvent tank 3 via the circulation pipe 17 for 60 minutes in an upward flow at m/h. Thereafter, the cleaning pump 5 is stopped, the hexane in the oil adsorbent layer 2 is returned to the solvent tank 3 using the action of the siphon, and the valve 13 is closed.
次に、バルブ１４と１２を開けて油吸着剤層２ａの水を
排除し、バルブ１２を閉じる。：次に、バルブ８を開け
て３ ｋｇ ／ ｃａｌ、の圧力の空気を油吸着剤層２
ａに３０分間送り、油吸着剤層３を・乾燥させる。次に
、バルブ１５を閉じ、バルブ１６を開けてから洗浄ポン
プ５を作動させて油吸着剤層２ａの膨張率が３０％にな
る洗浄流速６０ｍ／ｈで上向流で６０分間へキサンを、
循環配管２０を介して油吸着剤層２ａと溶剤槽３との間
で循環させた。Next, valves 14 and 12 are opened to remove water from the oil adsorbent layer 2a, and valve 12 is closed. :Next, open the valve 8 and inject air at a pressure of 3 kg/cal into the oil adsorbent layer 2.
a for 30 minutes to dry the oil adsorbent layer 3. Next, close the valve 15, open the valve 16, and operate the cleaning pump 5 to apply hexane in an upward flow for 60 minutes at a cleaning flow rate of 60 m/h so that the expansion rate of the oil adsorbent layer 2a is 30%.
It was circulated between the oil adsorbent layer 2a and the solvent tank 3 via the circulation pipe 20.
この後、バルブ１２を開けて油吸着剤層２ａのヘキサン
をカラム１から排除し、バルブ１６．６及び１２を閉じ
てから、バルブ１３．１８及び１９を開けて、再び油分
含有模擬液を下向流で通水したところ、第３図に示すよ
うに、油分除去性能は通水当初の状態まで戻り、実施例
１と同じ再生効果が得られた。After that, open the valve 12 to remove the hexane in the oil adsorbent layer 2a from the column 1, close the valves 16.6 and 12, open the valves 13.18 and 19, and lower the oil-containing simulated liquid again. When water was passed in a countercurrent flow, as shown in FIG. 3, the oil removal performance returned to the state at the time of water flow, and the same regeneration effect as in Example 1 was obtained.
この実施例のように油吸着剤層を２分割することにより
、再生効果を減することなく、使用溶剤量を少なくする
ことができ、溶剤槽をコンパクトにでき、かつ洗浄ポン
プ容量を小さくすることが可能となる。By dividing the oil adsorbent layer into two as in this example, the amount of solvent used can be reduced without reducing the regeneration effect, the solvent tank can be made compact, and the capacity of the cleaning pump can be reduced. becomes possible.
血所坐苅来
本発明によれば、油吸着剤が容易に、効率よく再生され
る。また、再生後の油分除去性能は通水当初時の水準ま
で回復するので、長期間安定した油分除去を達成するこ
とができる。このように、本発明によれば極めて優れた
再生効果を達成しうるので、油吸着剤を交換しなくてす
み、交換費用が不要となり、ランニングコストを低減で
きる。According to the present invention, the oil adsorbent can be easily and efficiently regenerated. Moreover, since the oil removal performance after regeneration is restored to the level at the time of water flow, stable oil removal can be achieved for a long period of time. As described above, according to the present invention, an extremely excellent regeneration effect can be achieved, so there is no need to replace the oil adsorbent, eliminating replacement costs and reducing running costs.
第１図は本発明の実施例１における再生前後及び比較例
１における再生後の油分除去性能を示す図、第２図は実
施例１に使用した油水分離装置のフローシート、第３図
は本発明の実施例２における再生前後の油分除去性能を
示す図、第４図は実施例２に使用した油水分離装置のフ
ローシートである。
１・・・カラム、２．２ａ・・・油吸着剤層、３・・・
溶剤槽、５・・・洗浄ポンプ、７・・・空気配管、１１
・・・処理水配管、１０・・・原水配管Fig. 1 is a diagram showing oil removal performance before and after regeneration in Example 1 of the present invention and after regeneration in Comparative Example 1, Fig. 2 is a flow sheet of the oil-water separator used in Example 1, and Fig. 3 is a diagram showing the oil removal performance of the present invention before and after regeneration in Comparative Example 1. FIG. 4 is a diagram showing the oil removal performance before and after regeneration in Example 2 of the invention, and is a flow sheet of the oil-water separator used in Example 2. 1... Column, 2.2a... Oil adsorbent layer, 3...
Solvent tank, 5... Washing pump, 7... Air piping, 11
... Treated water piping, 10... Raw water piping
Claims (1)
除去性能が低下した油吸着剤を再生するため、油吸着剤
層の水を排除した後、まず、空気を通して油吸着剤を乾
燥させ、次いで、溶剤を用いて油吸着剤を再生すること
を特徴とする油吸着剤の再生方法。In order to regenerate an oil adsorbent whose oil removal performance has deteriorated due to adsorption of oil in an oil-water separation device using an oil adsorbent, after removing the water from the oil adsorbent layer, the oil adsorbent is first dried by passing air through it. A method for regenerating an oil adsorbent, the method comprising: regenerating the oil adsorbent using a solvent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2034386A JPS62180710A (en) | 1986-02-03 | 1986-02-03 | Method for regenerating oil adsorbent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2034386A JPS62180710A (en) | 1986-02-03 | 1986-02-03 | Method for regenerating oil adsorbent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62180710A true JPS62180710A (en) | 1987-08-08 |
Family
ID=12024492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2034386A Pending JPS62180710A (en) | 1986-02-03 | 1986-02-03 | Method for regenerating oil adsorbent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62180710A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0324093A2 (en) * | 1988-01-12 | 1989-07-19 | Societe Des Produits Nestle S.A. | Oil and fat release method |
| JP2011050813A (en) * | 2009-08-31 | 2011-03-17 | Toshiba Corp | Method for producing oil adsorbing particle and water treatment method using the particle |
| JP2014200720A (en) * | 2013-04-02 | 2014-10-27 | 株式会社 アクセスジャパン | Oil-water separation device for separating oil from oil-water mixture, oil-water separation system including this device and separating oil from oil-water mixture, and method for separating oil from oil-water mixture |
| WO2018055566A1 (en) * | 2016-09-23 | 2018-03-29 | University Of South Africa | Recovery of crude oil from a crude oil adsorbent and simultaneous regeneraton of the adsorbent |
-
1986
- 1986-02-03 JP JP2034386A patent/JPS62180710A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0324093A2 (en) * | 1988-01-12 | 1989-07-19 | Societe Des Produits Nestle S.A. | Oil and fat release method |
| JP2011050813A (en) * | 2009-08-31 | 2011-03-17 | Toshiba Corp | Method for producing oil adsorbing particle and water treatment method using the particle |
| JP2014200720A (en) * | 2013-04-02 | 2014-10-27 | 株式会社 アクセスジャパン | Oil-water separation device for separating oil from oil-water mixture, oil-water separation system including this device and separating oil from oil-water mixture, and method for separating oil from oil-water mixture |
| WO2018055566A1 (en) * | 2016-09-23 | 2018-03-29 | University Of South Africa | Recovery of crude oil from a crude oil adsorbent and simultaneous regeneraton of the adsorbent |
| CN109952139A (en) * | 2016-09-23 | 2019-06-28 | 南非大学 | Crude oil and simultaneously reproducing adsorbent are recycled from crude oil adsorbent |
| US11065602B2 (en) | 2016-09-23 | 2021-07-20 | University Of South Africa | Recovery of crude oil from a crude oil adsorbent and simultaneous regeneration of the adsorbent |
| CN109952139B (en) * | 2016-09-23 | 2021-10-08 | 南非大学 | Recovery of crude oil from crude oil adsorbent and simultaneous regeneration of adsorbent |
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