JPS61407A - Method for repairing porous hollow yarn membrane module - Google Patents
Method for repairing porous hollow yarn membrane moduleInfo
- Publication number
- JPS61407A JPS61407A JP12160684A JP12160684A JPS61407A JP S61407 A JPS61407 A JP S61407A JP 12160684 A JP12160684 A JP 12160684A JP 12160684 A JP12160684 A JP 12160684A JP S61407 A JPS61407 A JP S61407A
- Authority
- JP
- Japan
- Prior art keywords
- hollow yarn
- opening
- rod
- hollow fiber
- module
- 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
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
Description
【発明の詳細な説明】
〔技術分野〕
本発明は多孔質中空糸膜モジュールの補修方法に関する
。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a method for repairing a porous hollow fiber membrane module.
多孔質中空糸膜は種々の分野における用途が期待されて
いるが、特にポリプロピレン、ポリエチレン等からなる
多孔質中空糸で構成される膜モジュールは、耐水性、耐
薬品性に優れ、医療用途、精密電子工業用途9食品工業
用途、理化学用途等幅広く利用されている。例えば該モ
ジュールを超精密f適用として水をr過し、水中に含ま
れている細菌や真菌を除去する無菌水製造装置、更には
水中のパイロジエンを除去しパイロジエンフリー水を得
るための装置等はその好例である。Porous hollow fiber membranes are expected to be used in various fields, and membrane modules made of porous hollow fibers made of polypropylene, polyethylene, etc. have excellent water resistance and chemical resistance, and are suitable for medical applications, precision Used in a wide range of electronic industry applications, including food industry applications, physical and chemical applications, etc. For example, a sterile water production device that uses this module in ultra-precision applications to r-filter water and remove bacteria and fungi contained in the water, and a device that removes pyrogens from water to obtain pyrogen-free water. is a good example.
該モジュールのこの様な使用実例において最も重要な問
題は中空糸の欠陥による該モジュールの一次側から二次
側へのリーク箇所の検査とその補修法である。すなわち
該リーク箇所の存在は超精密f適用モジュールの信頼性
の面で重大な問題である。The most important problem in such a usage example of the module is the inspection of leak points from the primary side to the secondary side of the module due to defects in the hollow fibers, and how to repair them. That is, the existence of the leakage point is a serious problem in terms of the reliability of the ultra-precision f application module.
一般的にモジュールのリーク箇所存在の原因のうち最も
大きなものとして多孔質中空糸膜自体の欠陥によるもの
がある。Generally, the most important cause of leakage points in modules is defects in the porous hollow fiber membrane itself.
即ち多孔質中空糸は厳密な工程管理のもとに製造されて
いるが、該モジュール作製には通常数百本〜数万本の中
空糸が使用されるために、現実として確率的にピンホー
ルの発生を皆無にすることは困難であること、またモジ
ュール組み立て加工時の取扱いが原因となって糸欠陥を
起すこともあることから多孔質中空糸膜自体の欠陥が大
きな問題になっている。したがって中空糸の欠陥による
該モジュールのリーク箇所1)発見とその補修法は極め
て大きな課題である。In other words, porous hollow fibers are manufactured under strict process control, but since hundreds to tens of thousands of hollow fibers are usually used to manufacture the module, in reality, pinholes occur with probability. Defects in the porous hollow fiber membrane itself have become a major problem, as it is difficult to completely eliminate the occurrence of fiber defects, and fiber defects may also occur due to handling during module assembly. Therefore, finding and repairing leak points in the module due to defects in the hollow fibers (1) is an extremely important issue.
従来、該形式のモジュールのリーク箇所の補修方法とし
ては、例えばリーク箇所に注射器を用いて樹脂接着剤を
圧入して接着補修する方法あるいはリーク箇所に細い金
属針を打ち込んで封鎖によって補修する方法などが良く
用いられている。しかし補修操作が煩雑であったり、補
修に長時間を要したり、また補修効果が不充分である等
の欠点があり、問題となっている。したがってリーク箇
所の補修法改良は該モジュー” A−1)エイ、
□ooo□4.ヮ:z −)v @オの信頼性向上の面
からも非常に重要である。Conventionally, methods for repairing leak points in modules of this type include, for example, repairing the leak by press-fitting a resin adhesive into the leak point using a syringe, or repairing the leak by inserting a thin metal needle into the leak point to seal it. is often used. However, there are problems such as the repair operation is complicated, the repair takes a long time, and the repair effect is insufficient. Therefore, the improvement of the repair method for leak points is based on this module.” A-1)
□ooo□4.ヮ:z −)v @It is also very important from the aspect of improving reliability.
〔発明の目的〕
このような現状から本発明者等は該モジュールの合理的
な補修方法について種々検討した結果、本発明に至った
ものである。[Object of the Invention] Under these circumstances, the inventors of the present invention have conducted various studies on rational repair methods for the module, and as a result, they have arrived at the present invention.
すなわち、本発明は多孔質中空糸群の端部がシール用樹
脂接着剤で固定され、且つ該接着固定された端部の外側
表面に中空糸開口部が露出するように構成される中空糸
膜モジュールにおいて、漏出の検知された中空糸開口部
にワックス状物からなる棒(以下ワックス棒という)の
少くとも先端を挿入し、該ワックス棒の挿入部分を該開
口部内に折残封入せしめることを特徴とする多孔質中空
糸モジュールの補修方法に関するものである。That is, the present invention provides a hollow fiber membrane module in which the ends of a group of porous hollow fibers are fixed with a sealing resin adhesive, and the hollow fiber openings are exposed on the outer surface of the adhesively fixed ends. is characterized in that at least the tip of a rod made of a wax-like material (hereinafter referred to as a wax rod) is inserted into the hollow fiber opening where leakage is detected, and the inserted portion of the wax rod is folded and enclosed within the opening. The present invention relates to a method for repairing a porous hollow fiber module.
次に本発明を図面にしたがって更に詳細に説明する。Next, the present invention will be explained in more detail with reference to the drawings.
第1図は中空糸開口部にワックス棒を挿入し該挿入部分
を折残封入した状態を示す。FIG. 1 shows a state in which a wax rod is inserted into the hollow fiber opening and the inserted portion is folded and sealed.
第2図、第3図は該中空糸膜モジュールの基本的な断面
図の例を示す。FIGS. 2 and 3 show examples of basic cross-sectional views of the hollow fiber membrane module.
第2図は多孔質中空糸束(1)の両端がシール用樹脂接
着剤(2X2’)によって固定されていることを示し、
(3X3’)は中空糸の開口部を示し、(4)は容器を
示す。第3図は多孔質中空糸群(1)がU字状に曲げら
れ、端面部が同じシール用樹脂接着剤(2)によって固
定化されていることを示し、(3)は中空糸の開口部、
(4)は容器を示す。なお第2図、第3図共に(5)は
モジュール内部に液体を注入するための注入口を示すも
のであり、モジュールの最終用途からの要望に応じて注
入口として使える液体の出入口が複数個ある場合は他の
液体入口をコック等で封じて、その一つだけを注入口と
して用いればよい。多孔質中空糸膜としてポリオレフィ
ン等の疎水性高分子を用いる場合は液体として水を用い
ると膜の孔径、孔形状によりその臨界圧力は異るが、通
常3す価2以下の低い水圧下で通常は水を通過せず、該
中空糸群の中に糸の切断や膜にピンホールを有する中空
糸があるとこの程度の圧力でも水の噴出やにじみ出し現
象が認められる。即ち注入口(5)からモジュール内部
へ水を注入し、接着固定端面部の外表面にある中空開口
部、すなわち第2図の(3X3’)又は第3図の(3)
から水の噴出あるいはにじみ出しを検出するのである。Figure 2 shows that both ends of the porous hollow fiber bundle (1) are fixed with a sealing resin adhesive (2X2'),
(3X3') indicates the opening of the hollow fiber, and (4) indicates the container. Figure 3 shows that the porous hollow fiber group (1) is bent into a U-shape, and the end face is fixed with the same sealing resin adhesive (2), and (3) shows the opening of the hollow fiber. ,
(4) indicates a container. Note that (5) in both Figures 2 and 3 shows the inlet for injecting liquid into the module, and there are multiple inlets and outlets for liquid that can be used as inlets depending on the end use of the module. In some cases, the other liquid inlets may be sealed with cocks or the like, and only one of them may be used as an injection port. When a hydrophobic polymer such as polyolefin is used as a porous hollow fiber membrane, if water is used as the liquid, the critical pressure will vary depending on the pore size and shape of the membrane, but it is usually does not pass water, and if there is a hollow fiber in the hollow fiber group that has a cut fiber or a pinhole in the membrane, water will gush out or seep out even at this level of pressure. That is, water is injected into the module from the injection port (5), and the hollow opening on the outer surface of the adhesive fixed end face (3X3' in FIG. 2 or (3) in FIG. 3) is injected into the module.
It detects water gushing or seeping out.
同様にその他の素材の膜を用いる場合でも1〜5 kg
/cm’の適当な圧力まで膜の微細孔を透過しない液と
組合せることにより、欠陥を有する糸を検知することが
出来る。この液の噴出やにじみ出し箇所を発見し、ワッ
クス棒をにじみ出し箇所に挿入し、該棒の挿入部分を該
開口部に折残封入せしめることKより該モジュールの補
修が行われる。Similarly, when using membranes made of other materials, the weight is 1 to 5 kg.
In combination with a liquid that does not permeate the pores of the membrane up to an appropriate pressure of /cm', defective threads can be detected. The module is repaired by finding the location where the liquid is spouting or oozing, inserting a wax rod into the oozing location, and sealing the inserted portion of the rod into the opening.
第1図はこの状態を示したものであり、第1図に示す如
く、多孔質中空糸膜(1)の中空開口部(3)にワック
ス棒(6)を挿入し、該棒の挿入部分を折って開口部(
3)内に折残封入せしめる。Figure 1 shows this state. As shown in Figure 1, a wax rod (6) is inserted into the hollow opening (3) of the porous hollow fiber membrane (1), and the inserted part of the rod is Fold the opening (
3) Enclose the remainder inside.
ワックス棒は中空糸の内径と同じか、又は中空糸の内径
より大きい直径を有する。The wax rod has a diameter that is equal to or greater than the inner diameter of the hollow fibers.
該棒の先端は中空糸開口部への挿入のし易さを考慮して
先端の1〜5mWが中空部に挿入できる様尖っているこ
とが好ましい。ただし、該棒は使用の都度折るので、使
用の都度先端を削って尖らせればよ(・。In consideration of ease of insertion into the hollow fiber opening, the tip of the rod is preferably sharp so that 1 to 5 mW of the tip can be inserted into the hollow portion. However, since the rod will be broken each time you use it, you will need to sharpen the tip each time you use it.
なお該ワックス棒(6)は、ワックス状のものをそのま
ま用いてもよいが、鉛筆の芯の如く、木材等で包埋され
た形状となっているものが実用上より好ましい。すなわ
ち鉛筆の芯の如きワックス棒を鋭利な刃物を用いて、第
3図の(7)に示す様に先端部を細く尖らせ、次に開口
部(3)内に1〜5朋挿入した後、横方向に僅かの応力
を加え、開口部(3)内で折損せしめて封入するのであ
る。Although the wax rod (6) may be used as it is, it is more preferable from a practical point of view that it is shaped like a pencil lead and is embedded in wood or the like. That is, use a sharp knife to sharpen the tip of a wax stick like a pencil lead, as shown in (7) in Figure 3, and then insert it into the opening (3) for 1 to 5 mm. Then, by applying a slight stress in the lateral direction, it is broken within the opening (3) and sealed.
ワックス棒(6)はワックスを主体とする表面の滑らか
な材料からなっているため該棒を開口部に挿入すること
が容易であり、又挿人後僅かな応力を加えることにより
、開口部内に折残封入することが容易である。Since the wax rod (6) is made of a material with a smooth surface mainly made of wax, it is easy to insert the rod into the opening, and by applying a slight stress after insertion, it can be inserted into the opening. It is easy to enclose residuals.
このような簡単な操作で欠陥を有する中空糸(の欠陥部
を介して未透過液と透過液の混合を防止できる。With such a simple operation, mixing of retentate and permeate through the defective portion of the hollow fiber can be prevented.
補修作業終了後、再度容器内に例えば3kgA−rIL
″の流体圧で液体を圧入し、中空開口部からの液体の噴
出やにじみ出しのないことを確認して補修を完了するの
である。After the repair work is completed, put 3 kg of A-rIL into the container again.
The repair is completed by injecting the liquid at a fluid pressure of 100 cm and confirming that there is no spouting or oozing of the liquid from the hollow opening.
このように本発明によれば、非常に簡便な操作でリーク
部分の検出と補修が短時間にしかも必要最少限の箇所に
確実に実施出来る等極めて実用性が高い。As described above, according to the present invention, leakage portions can be detected and repaired in a short period of time and reliably in the minimum necessary number of locations with a very simple operation, which is extremely practical.
次に本発明を実施例によって更に詳細に説明する。Next, the present invention will be explained in more detail with reference to Examples.
実施例
ポリエチレンからなる多孔質中空糸膜(中空開口部の直
径270μ、壁膜層の厚さ60μ)1万5千本を束ねて
U字状に曲げ、先端部付近を中空開口部が有する状態に
保ちながらポリウレタン系樹脂を用いて接着した。次に
該中空糸束をポリカーボネート樹脂からなる円筒形の容
器に同じくポリウレタン樹脂を用いて接着固定して無菌
水製造用モジュール150ケを作製した。すなわち第2
図に示す如きモジュール作製したのである。Example 15,000 porous hollow fiber membranes made of polyethylene (hollow opening diameter 270μ, wall membrane layer thickness 60μ) were bundled and bent into a U-shape, with a hollow opening near the tip. It was glued using polyurethane resin while keeping it in place. Next, the hollow fiber bundle was adhesively fixed to a cylindrical container made of polycarbonate resin using polyurethane resin, thereby producing 150 modules for producing sterile water. That is, the second
A module as shown in the figure was fabricated.
それぞれのモジュール内に3.0 kg/am2の水圧
で水を圧入し、モジュールの中空開口部からの水の噴出
やにじみ出しの有無を検査した。この結果2ケのモジュ
ールにリーク箇所があることが判明した。Water was injected into each module at a water pressure of 3.0 kg/am2, and the presence or absence of water spouting or oozing from the hollow opening of the module was examined. As a result, it was found that two modules had leak points.
すなわち検査結果は第1表の通りであった。That is, the test results were as shown in Table 1.
第 1 表
次にへのモジュールの欠陥を有する中空糸の開口箇所に
印を付けた後、芯が約2m1!のワックス状物からなる
鉛筆状の棒の先端を尖らせたものの先端を約3 mm挿
入し、折残封入せしめて補修した。このモジュールを約
70%のエタノールを用いて親水化後、井戸水を5 A
’/minの条件で約40*/濾過し、f過前後水につ
いて細菌の有無を常法により検査した。After marking the opening of the hollow fiber with the defect in the module to Table 1, the core is about 2 m1! The tip of a pencil-shaped rod made of a wax-like material with a sharpened tip was inserted approximately 3 mm in length, and the remaining portion was sealed to repair the damage. After making this module hydrophilic using approximately 70% ethanol, well water was heated to 5 A
The water was filtered at a rate of about 40*/min at a rate of 40*/min, and the water before and after filtration was examined for the presence of bacteria by a conventional method.
この結果、f過前の試料水からは細菌が検出されたが、
1過後水からは細菌が検出されなかった。As a result, bacteria were detected in the sample water taken before F.
No bacteria were detected in the water after one lapse.
次にBのモジュールを未補修のまま全く同条件で1過実
験を実施した。Next, a one-pass experiment was conducted under exactly the same conditions with module B left unrepaired.
この結果、f過前後水共に細菌が検出された。As a result, bacteria were detected in both the water before and after the f-time.
結果をまとめると次表第2表の通りである。The results are summarized in Table 2 below.
第 2 表
以上の通り本発明によるリーク補修法は優れた方法であ
ることが確認された。As shown in Table 2 above, the leak repair method according to the present invention was confirmed to be an excellent method.
通常膜モジュールは水性液体のf通弊水処理に用いられ
る。この場合カツクス棒は疎水性であるためワックス棒
の溶解や膨潤はなく、単に本発明のようにワックス棒を
開口部に折残封入するという簡単な操作で、例えば5
kg/cm”程度の水圧ではワックス棒を折残封入した
中空糸の開口部からの液洩れは生ぜず、充分使用に耐え
ることが見出された。即ち上記に説明した通り、本発明
によるリーク補修法は操作が簡単で、しかも短時間に確
実に補修が可能であり、工業上極めて有効な補修法であ
る。Membrane modules are typically used for water treatment of aqueous liquids. In this case, since the wax rod is hydrophobic, there is no melting or swelling of the wax rod, and the wax rod can be simply folded and sealed in the opening as in the present invention.
It has been found that under a water pressure of about 100 kg/cm", no liquid leaks from the opening of the hollow fiber in which the wax rod is broken and the remaining part is enclosed, and the liquid can withstand use sufficiently. In other words, as explained above, the present invention prevents leakage. The repair method is easy to operate and can be reliably repaired in a short period of time, making it an extremely effective repair method industrially.
第1図は中空開口部にワックス棒を挿入した状態を示す
断面概略図、第2図、第3図は中空糸膜モジュールの断
面概略図である。
図において、(1)は多孔質中空糸膜、(2)(2’)
はシール用樹脂接着剤、(3X3’)は中空糸開口部、
(4)は容器、(6)は折残されたワックス状物からな
る棒先端部を示す。
#2図
秦3図FIG. 1 is a schematic cross-sectional view showing a wax rod inserted into a hollow opening, and FIGS. 2 and 3 are schematic cross-sectional views of a hollow fiber membrane module. In the figure, (1) is a porous hollow fiber membrane, (2) (2')
is resin adhesive for sealing, (3X3') is hollow fiber opening,
(4) shows the container, and (6) shows the tip of the stick made of the wax-like material left behind. #2 Diagram Qin 3 Diagram
Claims (1)
、且つ該接着固定された端部の外側表面に中空糸開口部
が露出するように構成される中空糸膜モジュールにおい
て、漏出の検知された中空糸開口部に固型ワックス状物
からなる棒の少くとも先端を挿入し、該棒の挿入部分を
該開口部内に折残封入せしめることを特徴とする多孔質
中空糸膜モジュールの補修方法。Detecting leakage in a hollow fiber membrane module configured such that the ends of a group of porous hollow fibers are fixed with a sealing resin adhesive and the hollow fiber openings are exposed on the outer surface of the adhesively fixed ends. Repair of a porous hollow fiber membrane module, characterized by inserting at least the tip of a rod made of a solid wax-like material into the hollow fiber opening, and folding and enclosing the inserted portion of the rod in the opening. Method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12160684A JPS61407A (en) | 1984-06-13 | 1984-06-13 | Method for repairing porous hollow yarn membrane module |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12160684A JPS61407A (en) | 1984-06-13 | 1984-06-13 | Method for repairing porous hollow yarn membrane module |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61407A true JPS61407A (en) | 1986-01-06 |
Family
ID=14815414
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12160684A Pending JPS61407A (en) | 1984-06-13 | 1984-06-13 | Method for repairing porous hollow yarn membrane module |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61407A (en) |
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EP3175911A4 (en) * | 2014-07-30 | 2018-02-21 | Electrophor, Inc. | Hollow fibre membrane device and method for the production thereof |
US10427103B2 (en) | 2015-02-25 | 2019-10-01 | Mitsubishi Chemical Corporation | Separation membrane module and repairing method thereof |
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1984
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Cited By (15)
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