JP2007181819A - Oil/water separation filter and oil/water separator - Google Patents
Oil/water separation filter and oil/water separator Download PDFInfo
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本発明は、エマルション状態で含有する油水混合物を油相及び水相に分離する油水分離フィルター及び油水分離装置に関する。 The present invention relates to an oil / water separation filter and an oil / water separation device for separating an oil / water mixture contained in an emulsion state into an oil phase and an aqueous phase.
水相に含有される有用物質を油相に抽出したり、あるいは油相に含有される塩などを水相に抽出したのち、水相と油相を分離して有用物質や塩を取り出すという抽出操作は、廃水処理等の環境事業、医農薬工業、化学工業、食品工業などにおける単位操作として幅広く実施されている。抽出操作は、通常、水相及び油相からなる微小な粒子（エマルション）の状態で油水混合物としたのち、再び油相及び水相に分離する操作であるが、油水混合物に含まれる該粒子は速やかに破壊されず、結果として水相及び油相からなる微小な粒子を含む中間相となり、水相としても油相としても取り扱うことができないという問題がある。
このような解決方法として、ポリ弗化ビニリデン（ポリビニルジフルオライド）などのフッ素樹脂膜を代表とする撥水性樹脂繊維からなる油水分離膜を用いて油水混合物を透過する方法が知られている（例えば、特許文献１）。
Extraction of useful substances contained in the aqueous phase into the oil phase, or extraction of salts contained in the oil phase into the aqueous phase, followed by separation of the aqueous phase from the oil phase and extraction of useful substances and salts The operation is widely implemented as a unit operation in environmental business such as wastewater treatment, medical and agrochemical industry, chemical industry, food industry and the like. The extraction operation is usually an operation of making an oil-water mixture in the form of fine particles (emulsion) consisting of an aqueous phase and an oil phase, and then separating it again into an oil phase and an aqueous phase. The particles contained in the oil-water mixture are There is a problem that it is not destroyed quickly and results in an intermediate phase containing fine particles composed of an aqueous phase and an oil phase, and cannot be handled as an aqueous phase or an oil phase.
As such a solution, a method is known in which an oil-water mixture is permeated using an oil-water separation membrane made of a water-repellent resin fiber typified by a fluororesin membrane such as polyvinylidene fluoride (polyvinyl difluoride) ( For example, Patent Document 1).
しかしながら、本発明者が検討したところ、油水混合物には水も含まれていることから撥水性が強いと油水混合物を透過する際のフィルター間の圧力損失（フィルターの入口における加圧された圧力とフィルターの出口における圧力との差圧）が大きくなり、同じ圧力をフィルターに加圧すれば、小さい圧力損失を与える混合物に比し透過時間がかかり、透過時間を短くするために大きな圧力で加圧すると設備上の負荷がかかるという問題が明らかになった。
本発明の目的は、油水混合物を透過する際にフィルター間の圧力損失の少ない油水分離フィルター、これを用いる油水分離装置及び油水分離方法を提供することである。
However, as a result of investigation by the present inventor, since the oil / water mixture also contains water, if water repellency is strong, the pressure loss between the filters when passing through the oil / water mixture (the pressurized pressure at the inlet of the filter) If the same pressure is applied to the filter, the permeation time will be longer than that of a mixture giving a small pressure loss, and the pressure will be increased at a higher pressure to shorten the permeation time. Then, the problem that the load on equipment was applied became clear.
An object of the present invention is to provide an oil / water separation filter with little pressure loss between filters when passing through an oil / water mixture, an oil / water separation device using the same, and an oil / water separation method.
本発明は、撥水性樹脂繊維及び無機繊維を含有する油水分離フィルター；該フィルターと、油水混合液入口と、該油水分離フィルターを保持する保持具と、油水分離液出口とを具備する油水分離装置；及び、水相及び油相から形成されるエマルションを、撥水性樹脂繊維及び無機繊維を含有する油水分離フィルターに接触させることを含む該エマルションから水相と油相を分離する方法である。 The present invention relates to an oil / water separation filter comprising a water repellent resin fiber and an inorganic fiber; the filter, an oil / water mixture inlet, a holder for holding the oil / water separation filter, and an oil / water separator outlet. And a method of separating the water phase and the oil phase from the emulsion, comprising bringing the emulsion formed from the water phase and the oil phase into contact with an oil-water separation filter containing water-repellent resin fibers and inorganic fibers.
本発明の油水分離フィルターは親水性の無機繊維等を含むことから、撥水性のフッ素樹脂のみからなる膜と比べて、油水混合物を透過する際における油水分離フィルター間の圧力損失が低減され、フィルター間の差圧が一定の圧力であれば透過時間が短縮される。また、得られる油水混合液はほとんど油相と水相に分離されており、中間相はほとんど生じない。 Since the oil / water separation filter of the present invention contains hydrophilic inorganic fibers and the like, the pressure loss between the oil / water separation filters when permeating the oil / water mixture is reduced compared to a membrane made of only a water-repellent fluororesin, and the filter If the differential pressure between them is constant, the transmission time is shortened. In addition, the obtained oil / water mixture is almost separated into an oil phase and an aqueous phase, and an intermediate phase hardly occurs.
以下、本発明について詳細に説明する。
本発明に用いられる撥水性樹脂繊維としては、例えば、ポリエチレン、ポリプロピレン、ポリスチレン、エチレン−プロピレン共重合体などのポリオレフィンの繊維、例えば、ポリテトラフルオロエチレン、ポリトリフルオロエチレン、ポリクロロトリフルオロエチレン、ポリ弗化ビニリデンなどのフッ素樹脂繊維、例えば、ポリ塩化ビニル、ポリ塩化ビニルデンなどが挙げられる。
撥水性樹脂繊維としては、異なる２種以上の樹脂からなる繊維を用いてもよい。
撥水性樹脂繊維は、通常、幅が１ｍｍ以下、好ましくは５〜１００μｍであり、長さは、通常、幅の１０倍以上のものである。撥水性樹脂からなる糸も本発明の撥水性樹脂繊維に属する。
撥水性樹脂繊維としては、中でも、その繊維に油滴が接触したときに油滴同士の合一が起こり易く、油相の形成が容易になる傾向であることから、フッ素樹脂繊維が好ましい
The present invention will be described in detail below.
Examples of the water-repellent resin fiber used in the present invention include polyolefin fibers such as polyethylene, polypropylene, polystyrene, and ethylene-propylene copolymer, such as polytetrafluoroethylene, polytrifluoroethylene, polychlorotrifluoroethylene, Fluororesin fibers such as polyvinylidene fluoride, for example, polyvinyl chloride, polyvinylidene chloride and the like.
As the water-repellent resin fiber, fibers made of two or more different resins may be used.
The water-repellent resin fiber usually has a width of 1 mm or less, preferably 5 to 100 μm, and the length is usually 10 times or more the width. Yarn made of water-repellent resin also belongs to the water-repellent resin fiber of the present invention.
As the water-repellent resin fiber, among them, when the oil droplet comes into contact with the fiber, the oil droplets are likely to coalesce, and the oil phase tends to be easily formed. Therefore, a fluororesin fiber is preferable.
無機繊維としては、例えば、鉄、アルミニウム、ステンレスなどの金属繊維、例えば、ガラス繊維、例えば、アルミナ繊維、アルミナ−シリカ繊維、ジルコニア繊維などのセラミック繊維などが挙げられる。
無機繊維は、通常、幅が１００μｍ以下、好ましくは５〜２０μｍ程度であり、長さは、通常、幅の１０倍以上のものである。
無機繊維としては、異なる２種以上の無機材料からなる繊維を用いてもよい。無機繊維としては、２種以上の無機材料からなる繊維であってもよい。無機繊維としては、その繊維に水滴が接触したときに水滴同士の合一が起こり易く、水相の形成が容易になる傾向であることから、ガラス繊維が好ましい。
Examples of the inorganic fiber include metal fibers such as iron, aluminum, and stainless steel, and glass fibers such as ceramic fibers such as alumina fibers, alumina-silica fibers, and zirconia fibers.
The inorganic fiber usually has a width of 100 μm or less, preferably about 5 to 20 μm, and the length is usually at least 10 times the width.
As the inorganic fibers, fibers made of two or more different inorganic materials may be used. As an inorganic fiber, the fiber which consists of 2 or more types of inorganic materials may be sufficient. As the inorganic fibers, glass fibers are preferable because water droplets tend to coalesce when they contact the fibers, and the aqueous phase tends to be easily formed.
本発明の油水分離フィルターとしては、通常、膜状構造を有している。
本発明において、膜とは通常、厚さが０．１〜５０mm程度、好ましくは、０．５〜１０mm程度の成形体を意味し、この程度の厚さの不織布、織布等が含まれる。形状としては、シート状、円柱状などが挙げられる。
The oil-water separation filter of the present invention usually has a membrane structure.
In the present invention, the film usually means a molded product having a thickness of about 0.1 to 50 mm, preferably about 0.5 to 10 mm, and includes a nonwoven fabric, a woven fabric and the like having such a thickness. Examples of the shape include a sheet shape and a columnar shape.
油水分離膜における撥水性樹脂繊維／無機繊維の含有比率（重量）としては、通常、９０／１０〜１０／９０であり、好ましくは、８０／２０〜４０／６０である。
撥水性樹脂繊維が９０以下であると、フィルター間の圧力損失の低減の効果に優れる傾向があることから好ましく、１０以上であると、油水の分液速度が向上する傾向があることから好ましい。
The content ratio (weight) of the water-repellent resin fiber / inorganic fiber in the oil / water separation membrane is usually 90/10 to 10/90, and preferably 80/20 to 40/60.
When the water-repellent resin fiber is 90 or less, the effect of reducing the pressure loss between the filters tends to be excellent, and when the water-repellent resin fiber is 10 or more, the oil-water separation rate tends to be improved.
ここで、該油水分離フィルターの不織布は、撥水性樹脂繊維および無機繊維の短繊維（ステープル）または長繊維（フィラメント）から形成された薄層状繊維集合体（ウェブ）を機械的操作、接着剤あるいは繊維自身の熱融着力によって繊維を互いに接合させ、加工させて得られる布である。
また、該油水分離フィルターの織布としては、例えば、撥水性樹脂繊維の糸及び無機繊維の糸からなる織布、例えば、撥水性樹脂繊維及び無機繊維を混紡した糸を含む織布などが挙げられる。
Here, the non-woven fabric of the oil / water separation filter is a mechanical operation of a thin layered fiber assembly (web) formed from short fibers (staples) or long fibers (filaments) of water repellent resin fibers and inorganic fibers, an adhesive or It is a cloth obtained by bonding and processing the fibers together by the heat fusion force of the fibers themselves.
Examples of the woven fabric of the oil / water separation filter include a woven fabric made of a water-repellent resin fiber yarn and an inorganic fiber yarn, for example, a woven fabric containing a yarn blended with a water-repellent resin fiber and an inorganic fiber. It is done.
本発明の油水分離フィルターとしては、中でも、撥水性樹脂繊維の糸及び無機繊維の糸からなる織布、並びに、不織布が製造が容易なことから好ましく、とりわけ、特開昭５７−２０５５６６号公報、特開昭６１−１６０４６６号公報などに記載されているように、撥水性樹脂繊維と無機繊維を配合した緊密配合物を層状に重ね、荷重をかけた後、ニードル加工を施して得られる不織布が市販されていることから好ましい。市販されているフィルターの具体例としては、バグフィルター濾布あるいは焼却場の集塵用フィルターとして市販されているテファイヤー（登録商標、販売：東レ株式会社）などが挙げられる。
無機繊維の表面に撥水性樹脂が完全に被覆された繊維からなる膜（例えば鞘芯構造の繊維からなる膜）は、油水混合物が撥水性樹脂繊維及び無機繊維の両方に接触し得ないことから、油滴同士の合一が起きない、またはフィルター間の圧力損失を低減させないため好ましくない。
As the oil-water separation filter of the present invention, among them, a woven fabric made of water-repellent resin fibers and inorganic fiber yarns, and a nonwoven fabric are preferred because they are easy to produce. As described in Japanese Patent Application Laid-Open No. 61-160466, a non-woven fabric obtained by laminating a close mixture of water-repellent resin fibers and inorganic fibers in layers and applying a load, followed by needle processing, It is preferable because it is commercially available. Specific examples of the commercially available filter include bag filter filter cloth or Tefayer (registered trademark, sold by Toray Industries, Inc.) marketed as a dust collection filter for incinerators.
A film made of fibers in which the surface of the inorganic fiber is completely covered with the water-repellent resin (for example, a film made of fibers having a sheath core structure) is because the oil-water mixture cannot contact both the water-repellent resin fibers and the inorganic fibers. This is not preferable because coalescence of oil droplets does not occur or pressure loss between filters is not reduced.
本発明の油水分離装置は、本発明の油水分離フィルターと、油水混合液入口と、該油水分離フィルターを保持する保持具と、油水分離液出口とを具備する。該油水分離装置としては、濾過器が挙げられ、例えば、装置中の該入口と該出口が、保持具で固定されたフィルターでその両側に隔てられている構造の濾過器が挙げられる。具体例として、フンダー濾過器などの、入口と濾布を保持する保持具と出口とを具備する濾過器の濾布部分に本発明の油水分離フィルターが設置された濾過器が挙げられる。この濾過器に油水混合液を入口から油水分離フィルターを経由して出口に通すことによって油と水の２相に分離された液を得ることができる。 The oil / water separation device of the present invention comprises the oil / water separation filter of the present invention, an oil / water mixture inlet, a holder for holding the oil / water separation filter, and an oil / water separator outlet. Examples of the oil / water separator include a filter. For example, a filter having a structure in which the inlet and the outlet in the apparatus are separated from each other by a filter fixed by a holder. As a specific example, a filter in which the oil / water separation filter of the present invention is installed in a filter cloth part of a filter having an inlet, a holder for holding the filter cloth, and an outlet, such as a Hunder filter. By passing the oil / water mixture through this filter from the inlet through the oil / water separation filter to the outlet, a liquid separated into two phases of oil and water can be obtained.
例えば、コアレッサー（例えば例えば特許第２５７２０６８号に記載）における金属網に代えて本発明の油水分離フィルターを適用すれば、前記濾過器の一態様となる。
本発明の油水分離フィルターを濾過器に用いる場合、濾過器の入口に加えられる圧力（透過圧力）は、通常、０．０１[Pa]〜１００×１０５[Pa]程度である。１００×１０５[Pa]以下であると、濾過器の耐圧性を低減せしめたり、油水分離フィルターの破損の可能性が低減する傾向があることから好ましく、また、０．０１[Pa]以上であると油水分離が十分に行われ、分液時間が短縮される傾向があることから好ましい。
その他、例えば、特開２００１−３２１６０５号公報に記載のサイクロンを利用した比重差分離装置におけるブラシに代えて本発明の油水分離フィルターを適用すれば、同様に本発明の油水分離装置となり、同様に油水分離を行うことができる。
For example, when the oil-water separation filter of the present invention is applied instead of the metal net in a coalescer (for example, described in Japanese Patent No. 2572068), one embodiment of the filter is obtained.
When the oil / water separation filter of the present invention is used in a filter, the pressure (permeation pressure) applied to the inlet of the filter is usually about 0.01 [Pa] to 100 × 10 5 [Pa]. It is preferable that the pressure is 100 × 10 5 [Pa] or less because the pressure resistance of the filter tends to be reduced or the possibility of breakage of the oil-water separation filter tends to be reduced. It is preferable because oil-water separation is sufficiently performed and the separation time tends to be shortened.
In addition, for example, if the oil-water separation filter of the present invention is applied in place of the brush in the specific gravity difference separation apparatus using a cyclone described in JP-A-2001-321605, the oil-water separation apparatus of the present invention is similarly applied. Oil-water separation can be performed.
本発明に用いられるエマルションは、液滴がそれを溶かさない他の液体中に分散した系であり、例えば、水相中に油相の粒子が分散した系、油相中に水相の粒子が分散した系などが挙げられる。ここで、水相は水を主成分とした相であり、具体的には、水が９０重量％以上、好ましくは９５重量％以上の相である。また、油相は有機溶媒を主成分とする相であり、具体的には、有機溶媒が９０重量％以上、好ましくは９５重量％以上の相である。
エマルションの中でも、エマルションを静置した際の分液速度が0.05m/hr以上であることが好ましい。
The emulsion used in the present invention is a system in which droplets are dispersed in another liquid that does not dissolve it, for example, a system in which oil phase particles are dispersed in an aqueous phase, and water phase particles in an oil phase. Examples include dispersed systems. Here, the water phase is a phase mainly composed of water, and specifically, a phase in which water is 90% by weight or more, preferably 95% by weight or more. The oil phase is a phase mainly composed of an organic solvent. Specifically, the oil phase is a phase containing 90% by weight or more, preferably 95% by weight or more.
Among emulsions, the liquid separation speed when the emulsion is allowed to stand is preferably 0.05 m / hr or more.
ここで、有機溶媒としては、例えば、ベンゼン、トルエン、キシレンなどの芳香族炭化水素類、ヘプタン、ヘキサン、ヘプタン、オクタン、ノナン、デカン、ドデカン、トリデカンなどの脂肪族炭化水素類、シクロペンタン、シクロヘキサンなどの脂環式炭化水素類、塩化メチレン、クロロホルム、クロロベンゼンなどのハロゲン化炭化水素類、ジメチルエーテル、ジエチルエーテル、エチレングリコールジメチルエーテル、プロピレングリコールジブチルエーテル、テトラヒドロフランなどのエーテル類、メチルイソブチルケトン、酢酸ブチルなどが挙げられる。
有機溶媒としては中でも、芳香族炭化水素類、脂肪族炭化水素類および脂環式炭化水素類が好適に用いられる。
Here, examples of the organic solvent include aromatic hydrocarbons such as benzene, toluene, and xylene, aliphatic hydrocarbons such as heptane, hexane, heptane, octane, nonane, decane, dodecane, and tridecane, cyclopentane, and cyclohexane. Alicyclic hydrocarbons such as, halogenated hydrocarbons such as methylene chloride, chloroform, chlorobenzene, ethers such as dimethyl ether, diethyl ether, ethylene glycol dimethyl ether, propylene glycol dibutyl ether, tetrahydrofuran, methyl isobutyl ketone, butyl acetate, etc. Is mentioned.
Among them, aromatic hydrocarbons, aliphatic hydrocarbons, and alicyclic hydrocarbons are preferably used as the organic solvent.
以下、実施例を挙げて本発明を更に具体的に説明する。尚、実施例中「部」、「％」とあるのは特に断りのない限り重量基準である。 Hereinafter, the present invention will be described more specifically with reference to examples. In the examples, “parts” and “%” are based on weight unless otherwise specified.
（実施例１）
＜エマルションの調製＞
エマルションはマイクロミキサー（IMM社、標準単一混合機）を用いてドデカンを０．３ｍｌ／分、水を２．７ｍｌ／分で供給して製造した。このエマルションの粒度分布をレーザー回折・散乱式粒度分布計(HORIBA、LA-920)を用いて測定した結果を図１に示す。
Example 1
<Preparation of emulsion>
The emulsion was produced by supplying dodecane at 0.3 ml / min and water at 2.7 ml / min using a micromixer (IMM, standard single mixer). The particle size distribution of this emulsion was measured using a laser diffraction / scattering particle size distribution analyzer (HORIBA, LA-920).
＜油水分離＞
油水分離フィルターとして撥水性樹脂繊維の１種であるフッ素樹脂繊維を７５重量％、無機繊維の１種であるガラス繊維を２５重量％含有するテファイヤー（登録商標: テファイヤー、 １．３ｍｍ厚、８ｍｍφ）を図２に示すごとく濾過器に組み込んだ。続いて、図３に示すごとくマイクロシリンジポンプ（６、Kd Scientific、IC3210）、濾過器２及び水圧計（７、VALCOM, VSST1-A4）を設置し、ポンプ６から濾過器２へと前記エマルションを供給した。その結果を表１に示した。濾過器２の出口のエマルションに含まれる油滴（ドデカン）は全て油相と水相に分離され、出口液中の油滴の粒度分布は検出されなかった。
<Oil water separation>
As an oil / water separation filter, a tefir (registered trademark: tefir, 1.3 mm thickness) containing 75% by weight of fluororesin fiber which is one type of water-repellent resin fiber and 25% by weight of glass fiber which is one type of inorganic fiber, 8 mmφ) was incorporated into the filter as shown in FIG. Subsequently, as shown in FIG. 3, a micro syringe pump (6, Kd Scientific, IC3210), a filter 2 and a water pressure gauge (7, VALCOM, VSST1-A4) are installed, and the emulsion is fed from the pump 6 to the filter 2. Supplied. The results are shown in Table 1. All oil droplets (dodecane) contained in the emulsion at the outlet of the filter 2 were separated into an oil phase and an aqueous phase, and the particle size distribution of the oil droplets in the outlet liquid was not detected.
ここでαは、透過圧力（フィルター間の差圧）に対するフィルターの透過性能を表す物性値であり、式（１）で定義される。また、Air permeability[Pa-1]はJIS L 1096 8.27に示される方法で測定されたフィルターの物性値である。
Ｖ＝α×Ａ×Ｐ （１）
Ｖ：フィルター透過流速［cm３・cm-2・sec-1］
α：透過圧力に対するフィルターの透過性能を表す物性値［Pa-1］
Ａ：Air permeability［cm３・cm-2・sec-1］
Ｐ：圧力［Pa］
Here, α is a physical property value representing the permeation performance of the filter with respect to the permeation pressure (differential pressure between the filters), and is defined by Equation (1). Air permeability [Pa -1 ] is a physical property value of the filter measured by the method shown in JIS L 1096 8.27.
V = α × A × P (1)
V: Filter permeation flow rate [cm 3 · cm -2 · sec -1 ]
α: Physical property value representing the permeation performance of the filter with respect to the permeation pressure [Pa −1 ]
A: Air permeability [cm 3・ cm -2・ sec -1 ]
P: Pressure [Pa]
（実施例２及び比較例１）
実施例２では油水分離フィルターとしてフッ素樹脂繊維を５０重量％、ガラス繊維を５０重量％含有するテファイヤー（登録商標: テファイヤーHG Technology、２．１ｍｍ厚）を、比較例１ではフッ素樹脂繊維のみからなる（品番:BF-700SR、１．１５ｍｍ厚）を用いる以外は実施例１と同様に実施した。結果を表１にまとめた。出口ラインのエマルションに含まれる油滴（ドデカン）は全て解乳化され、出口液中の油滴の粒度分布は検出されなかった。
表１に示したように、ガラス繊維比率が増えるに従いαの値は大きくなり、透過圧力に対する膜の透過性能が上がっていることを確認することができる。
In Example 2, a tefir (registered trademark: Tefir HG Technology, 2.1 mm thickness) containing 50% by weight of a fluororesin fiber and 50% by weight of glass fiber as an oil-water separation filter, and in Comparative Example 1, only a fluororesin fiber was used. (Product number: BF-700SR, 1.15 mm thickness) was used, and the same procedure as in Example 1 was performed. The results are summarized in Table 1. All the oil droplets (dodecane) contained in the emulsion of the outlet line were demulsified, and the particle size distribution of the oil droplets in the outlet liquid was not detected.
As shown in Table 1, the value of α increases as the glass fiber ratio increases, and it can be confirmed that the permeation performance of the membrane against the permeation pressure is increased.
本発明の油水分離フィルターは、各種工業で用いられる抽出操作の際に生じるエマルションの油水分離や解乳化、廃水処理などで生じる油相と水相との中間相の処理に用いることができる。 The oil-water separation filter of the present invention can be used for the treatment of an intermediate phase between an oil phase and an aqueous phase produced by oil-water separation, demulsification, waste water treatment, etc. of an emulsion produced during extraction operations used in various industries.
１……油水分離膜
２……濾過器
３……濾過器の出口（外径６ｍｍφ）
４……Ｏ-リング（径２５.６ｍｍφ、線径２.４ｍｍφ）
５……Ｏ-リング（径３４.７ｍｍφ、線径３.５ｍｍφ）
６……マイクロシリンジポンプ
７……水圧計
DESCRIPTION OF
4 ... O-ring (diameter 25.6mmφ, wire diameter 2.4mmφ)
5 ... O-ring (diameter 34.7mmφ, wire diameter 3.5mmφ)
6 ……
Claims (14)
The method according to claim 13, wherein the contact is permeation of the emulsion through an oil-water separation filter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006330389A JP2007181819A (en) | 2005-12-09 | 2006-12-07 | Oil/water separation filter and oil/water separator |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2005355714 | 2005-12-09 | ||
| JP2006330389A JP2007181819A (en) | 2005-12-09 | 2006-12-07 | Oil/water separation filter and oil/water separator |
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| JP2007181819A true JP2007181819A (en) | 2007-07-19 |
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| JP2006330389A Pending JP2007181819A (en) | 2005-12-09 | 2006-12-07 | Oil/water separation filter and oil/water separator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106457071A (en) * | 2014-05-28 | 2017-02-22 | 巴斯夫欧洲公司 | Mesh comprising a surface of hydrated aluminum oxides and their use for oil-water separation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5217257A (en) * | 1975-07-29 | 1977-02-09 | Ici Ltd | Method of removing oil from underwater oil type emulston |
| JPS5936806U (en) * | 1982-08-27 | 1984-03-08 | 住友金属鉱山株式会社 | oil/water separator |
| JPS63156508A (en) * | 1986-07-17 | 1988-06-29 | Asahi Chem Ind Co Ltd | Reinforced oil-water separating filter |
| JPH0286602U (en) * | 1988-12-21 | 1990-07-09 |
-
2006
- 2006-12-07 JP JP2006330389A patent/JP2007181819A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5217257A (en) * | 1975-07-29 | 1977-02-09 | Ici Ltd | Method of removing oil from underwater oil type emulston |
| JPS5936806U (en) * | 1982-08-27 | 1984-03-08 | 住友金属鉱山株式会社 | oil/water separator |
| JPS63156508A (en) * | 1986-07-17 | 1988-06-29 | Asahi Chem Ind Co Ltd | Reinforced oil-water separating filter |
| JPH0286602U (en) * | 1988-12-21 | 1990-07-09 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106457071A (en) * | 2014-05-28 | 2017-02-22 | 巴斯夫欧洲公司 | Mesh comprising a surface of hydrated aluminum oxides and their use for oil-water separation |
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