JPH022832A - Hollow yarn membrane module - Google Patents
Hollow yarn membrane moduleInfo
- Publication number
- JPH022832A JPH022832A JP14650688A JP14650688A JPH022832A JP H022832 A JPH022832 A JP H022832A JP 14650688 A JP14650688 A JP 14650688A JP 14650688 A JP14650688 A JP 14650688A JP H022832 A JPH022832 A JP H022832A
- Authority
- JP
- Japan
- Prior art keywords
- hollow yarn
- hollow fiber
- protector
- water
- hollow
- 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
- 239000012528 membrane Substances 0.000 title claims abstract description 66
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 230000001012 protector Effects 0.000 claims abstract description 25
- 239000012466 permeate Substances 0.000 claims abstract description 8
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 4
- 239000000057 synthetic resin Substances 0.000 claims abstract description 4
- 239000012510 hollow fiber Substances 0.000 claims description 73
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000001914 filtration Methods 0.000 description 9
- 239000011550 stock solution Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000012498 ultrapure water Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229910021642 ultra pure water Inorganic materials 0.000 description 3
- 238000000108 ultra-filtration Methods 0.000 description 3
- 239000004695 Polyether sulfone Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229920006393 polyether sulfone Polymers 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000642 polymer Chemical class 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は中空糸膜モジュールに関し、更に詳しくは、医
薬品業界における精製水、半導体業界における超純水等
の高純度の水質の透過水が得られる液体用分離膜モジュ
ールに関するものである。Detailed Description of the Invention (a) Industrial Application Field The present invention relates to a hollow fiber membrane module, and more specifically, it is used for permeating high-purity water such as purified water in the pharmaceutical industry and ultrapure water in the semiconductor industry. The present invention relates to the resulting liquid separation membrane module.
（ロ）従来の技術
一般に、中空糸膜は、これを逆浸透、限外濾過膜、精密
濾過膜などの分離用濾過装置としての膜モジュールに使
用した時、単位体積当たりの膜面積を大にすることがで
きるため膜モジュールのコンパクト化に有利であること
が知られている。(b) Conventional technology In general, when hollow fiber membranes are used in membrane modules as separation filtration devices such as reverse osmosis, ultrafiltration membranes, and precision filtration membranes, they increase the membrane area per unit volume. It is known that this is advantageous in making the membrane module more compact.
従来のこの種のモジュールにおいて、例えば、中空糸が
多く利用されている限外濾過膜の場合では、内圧式循環
濾過法で濾過する方法が知られている。In conventional modules of this type, for example, in the case of ultrafiltration membranes in which hollow fibers are often used, a method of filtration using an internal pressure circulation filtration method is known.
この内圧式循環濾過法は、中空糸膜内部に原液を導入し
、原液を循環させながら濾過する方法である。この方法
を用いるのは原液中に固形分が多く含まれるために、原
水を循環させないと目詰まりが早く、透過速度がすぐに
低下してしまうためである。従って、原液を膜面に平行
に流し、膜表面への固形分の堆積が起きないようにする
必要がある。This internal pressure circulation filtration method is a method in which a stock solution is introduced into a hollow fiber membrane, and the stock solution is filtered while being circulated. This method is used because the raw solution contains a large amount of solids, so if the raw water is not circulated, clogging will occur quickly and the permeation rate will drop immediately. Therefore, it is necessary to flow the stock solution parallel to the membrane surface to prevent solid content from accumulating on the membrane surface.
一方、原液中の固形分が少ない場合には、たとえ限外濾
過膜程度の分画性能を有する膜を利用しても、外圧式全
濾過方式を採用した方が有効な場合もある。例えば、逆
浸透膜の透過水をさらに処理する場合などにおいては、
外圧式の方が原液に触れる膜面積が大きくなるため、膜
への負荷がその分小さくなり内圧式よりも有利であると
言える。On the other hand, when the solid content in the stock solution is low, it may be more effective to employ an external pressure total filtration method even if a membrane having fractionation performance comparable to that of an ultrafiltration membrane is used. For example, when further processing permeated water from a reverse osmosis membrane,
Since the external pressure type has a larger membrane area that comes into contact with the stock solution, the load on the membrane is correspondingly smaller and can be said to be more advantageous than the internal pressure type.
（ハ）発明が解決しようとする課題
しかるに、このような外圧全濾過法を採用した場合には
、加圧された原液が中空糸を揺すり、中空糸に損傷を与
えることがある。特に、膜の透過速度が大である場合は
膜面への力が大きくかかり、損傷が著しい。(c) Problems to be Solved by the Invention However, when such an external pressure total filtration method is adopted, the pressurized stock solution may shake the hollow fibers and cause damage to the hollow fibers. In particular, when the permeation rate of the membrane is high, a large force is applied to the membrane surface, causing significant damage.
しかも、中空糸束をネット状の簡に入れて中空糸を保護
することは一般に行われているものの、その保護の目的
は、製造中での中空糸束が損傷されるのを防止するもの
であり、中空糸膜モジュールの使用中での損傷の防御や
膜モジュールの性能に及ぼす影響についてはほとんど考
慮されていなかった。Furthermore, although it is common practice to protect the hollow fiber bundles by encasing them in a net-like bag, the purpose of this protection is not to prevent the hollow fiber bundles from being damaged during manufacture. However, little consideration was given to preventing damage to the hollow fiber membrane module during use and the effects on the performance of the membrane module.
また、中空糸をモジュールケースにぎっしり詰め込み、
揺れが起きない様にすることも考えられるが、この場合
には微少な液だまりや気泡のたまりが中空糸束内に生じ
、膜自体の持つ性能が十分に発揮できないと言う欠点が
あった。In addition, hollow fibers are tightly packed into a module case,
It is possible to prevent the shaking from occurring, but in this case, a small pool of liquid or air bubbles is generated within the hollow fiber bundle, which has the disadvantage that the performance of the membrane itself cannot be fully demonstrated.
この発明は、中空糸を束として使用する際に、中空糸が
損傷したり液だまりや気泡のたまりが発生したりするの
を防止できる中空糸膜モジュールを提供することを目的
の一つとするものである。One of the objects of the present invention is to provide a hollow fiber membrane module that can prevent damage to the hollow fibers and the formation of liquid pools and bubbles when the hollow fibers are used as a bundle. It is.
（ニ）課題を解決するための手段
本発明は、有底円筒状で、その周側面に原水入口を形成
した合成樹脂製のケース本体と、複数本の中空糸を通水
性の円筒形保護体によって束ねて構成され、上記ケース
本体内に装着された中空糸膜体と、上記ケース本体の開
口に着脱可能に装着され、透過水出口を有するキャップ
とを備え、上記原水人口から流入する原水を圧力下で上
記保護体および中空糸膜体を介して透過させ、透過水を
上記透過水出口から流出しうる中空糸膜モジュールにお
いて、
上記円筒形保護体の内径（Ｒ）が、上記中空糸の外径（
ｒ）と本数（ｎ）との間に、
Ｒ＝Ｎ−ｒ−Ｉ
が成立し、
かつ１．３０≦Ｎ≦１．４５であることを特徴とする中
空糸膜モジュール、である。(d) Means for Solving the Problems The present invention comprises a case body made of synthetic resin, which has a cylindrical shape with a bottom and has a raw water inlet formed on its circumferential side, and a water-permeable cylindrical protector having a plurality of hollow fibers. A hollow fiber membrane body which is bundled together and installed in the case body, and a cap which is removably attached to the opening of the case body and has a permeated water outlet, and which collects raw water flowing in from the raw water population. In a hollow fiber membrane module capable of permeating water through the protector and the hollow fiber membrane body under pressure and allowing permeate to flow out from the permeate outlet, the inner diameter (R) of the cylindrical protector is such that the inner diameter (R) of the hollow fiber is Outer diameter (
The hollow fiber membrane module is characterized in that R=N-r-I holds between r) and the number (n), and 1.30≦N≦1.45.
すなわち、本発明は、分離精製用の中空糸膜モジュール
を作成するに当たり、中空糸の束（中空糸膜体）を通水
性のある円筒形保護体の中に入れ、当該保護体の内径（
Ｒ）が、中に挿入される中空糸の外径（ｒ）と本数（ｎ
）の間に、
Ｒ＝Ｎ−ｒ−／”ｎ
の関係があり、Ｎｈ＜１．３０〜１．４５の範囲に入る
数であることを特徴とする中空糸膜モジュールである。That is, in producing a hollow fiber membrane module for separation and purification, the present invention places a bundle of hollow fibers (hollow fiber membrane body) in a water-permeable cylindrical protector, and adjusts the inner diameter of the protector (
R) is the outer diameter (r) and number (n
), there is a relationship of R=N-r-/''n, and the hollow fiber membrane module is characterized in that the number falls within the range of Nh<1.30 to 1.45.
上述したように膜モジュールの性能が保護体とその中に
挿入される中空糸との間の相関関係に依存することは以
前は知られていなかった。しかし、水の純度が高く、比
抵抗が純水の理論値とほぼ等しい水、いわゆる超純水を
、膜により製造するようになると、使用中における膜モ
ジュールの性能変化や性能の発現性は端的に現れてくる
。特に、ファイナルフィルターとして外圧全ｆｆ１ｌ過
法により中空糸膜モジュールを使用した場合には、性能
の変化は顕著に現れる。As mentioned above, it was not previously known that the performance of membrane modules depends on the correlation between the protector and the hollow fibers inserted therein. However, when membranes are used to produce ultrapure water, which has a high purity and a resistivity that is almost equal to the theoretical value of pure water, changes in the performance of membrane modules during use and the development of performance are obvious. It appears. In particular, when a hollow fiber membrane module using the external pressure total ff1l filtration method is used as the final filter, the change in performance becomes remarkable.
しかしながら、これらは、モジュールの設計段階におい
て、創意工夫をすることで解決することがわかった。す
なわち、本発明者は、使用中における中空糸束全体の揺
れを少なくするために中空糸束を通水性のある保護体の
中に入れるとともに、この保護体を円筒状にして、しか
も円筒の内径（Ｒ）と内に挿入される中空糸の外径（ｒ
）と本数（ｎ）との間に
Ｒ＝Ｎ−ｒ−Ｊ’ｎ、 １．３１１≦Ｎ≦１．４５・・
・・・（Ａ）の関係が成り立たなければならないことを
見出した。However, it has been found that these problems can be resolved by using some ingenuity at the module design stage. That is, in order to reduce the shaking of the entire hollow fiber bundle during use, the inventor placed the hollow fiber bundle in a water-permeable protective body, made this protective body cylindrical, and furthermore, the inner diameter of the cylinder was (R) and the outer diameter (r
) and the number (n), R=N-r-J'n, 1.311≦N≦1.45...
...We found that the relationship (A) must hold.
上記関係式（Ａ）において、Ｎ７＜１．３未満であると
、中空糸束内に微少な液だまりが発生し、この液だまり
内の液は流れないので、膜の洗浄性が悪く、膜自体の持
つ性能を発揮しなかったり、膜モジユール洗浄後のモジ
ュール性能の回復に著しく時間がかかることになる。In the above relational expression (A), if N7<1.3, a small pool of liquid will occur in the hollow fiber bundle and the liquid in this pool will not flow, resulting in poor cleaning performance of the membrane and The membrane module itself may not exhibit its own performance, or it will take a significant amount of time to recover the module performance after cleaning the membrane module.
一方、Ｎが１．４５より大きいときは、保護体内での糸
揺れが大きく中空糸を損傷し易く、膜性能に著しいダメ
ージを受ける。また、単位体積当たりの膜面積も小さい
ものとなるため、中空糸モジュールの単位体積当たりの
膜面積の大きさという効果的な特徴を失ってしまう。On the other hand, when N is larger than 1.45, the yarn swings within the protector and the hollow fibers are likely to be damaged, resulting in significant damage to membrane performance. Furthermore, since the membrane area per unit volume is also small, the effective feature of the hollow fiber module, which is the large membrane area per unit volume, is lost.
さらに、Ｎは１．３２≦Ｎ≦１．４３５が好ましく、１
．３４≦Ｎ≦１，４２がより好ましい。Furthermore, N is preferably 1.32≦N≦1.435, and 1
．． More preferably, 34≦N≦1,42.
本発明で用いられる通水性のある円筒形保護体の通水部
の形状はどんな形でも良い。材質についても特に制限は
なく、透過液や原水に溶解、分散、浸蝕されないもので
、かつ中空糸を保護する強度があるものであれば何でも
良い。例えば金属類、高分子化合物類、ゴム、セラミッ
ク、およびこれらの複合体などを挙げることができる。The water-permeable portion of the water-permeable cylindrical protector used in the present invention may have any shape. There are no particular restrictions on the material, and any material may be used as long as it is not dissolved, dispersed, or corroded by the permeate or raw water, and has the strength to protect the hollow fibers. Examples include metals, polymer compounds, rubber, ceramics, and composites thereof.
中空糸束はこれらの保護体によって全体が覆れていなけ
ればならず、第１図に模式的に図示された様なモジュー
ルを本発明の例として挙げることができる。The hollow fiber bundle must be completely covered by these protectors, and a module as schematically illustrated in FIG. 1 can be cited as an example of the present invention.
この発明の中空糸としては従来公知の選択透過性の膜圧
を有する中空糸を用いることができる。As the hollow fiber of the present invention, a conventionally known hollow fiber having a permselective membrane pressure can be used.
例えば、ポリエステル系中空糸・セルロースアセテート
中空糸・アクリル系中空糸・ポリアクリロニトリル系中
空糸・ポリスルホン系中空糸・ポリエーテルスルホン系
中空糸・ポリイミド系中空糸等を挙げることができる。Examples include polyester hollow fibers, cellulose acetate hollow fibers, acrylic hollow fibers, polyacrylonitrile hollow fibers, polysulfone hollow fibers, polyethersulfone hollow fibers, and polyimide hollow fibers.
そして中空糸束の両端部分は公知の鋳造成型可能な物質
で接着される。例えば、天然ゴム、合成ゴム、シリコー
ン、ポリウレタンおよびエポキシ樹脂等が好ましいもの
として挙げられる。Both end portions of the hollow fiber bundle are bonded using a known casting material. For example, preferred examples include natural rubber, synthetic rubber, silicone, polyurethane, and epoxy resin.
（ホ）作用
上記構成により、中空糸束（中空糸膜体）を通水性を有
する円筒状の保護体内に収納するとともに、この保護体
の内径（Ｒ）が、中に挿入される中空糸の外径（ｒ）と
本数（ｎ）の間に、Ｒ＝Ｎ−ｒｚ／Ｒ
が成立し、かつＮを１．３０〜１．４５の範囲に入る数
に設定したことから、加圧された原液が中空糸を揺する
のを防止でき、また、中空糸膜体内に液だまりや気泡の
たまりが生じるのを防止できる。(E) Effect With the above structure, the hollow fiber bundle (hollow fiber membrane body) is housed in a cylindrical protector having water permeability, and the inner diameter (R) of this protector is equal to the diameter of the hollow fibers inserted therein. Since R=N-rz/R was established between the outer diameter (r) and the number (n), and N was set to a number within the range of 1.30 to 1.45, the pressurized It is possible to prevent the stock solution from shaking the hollow fibers, and also to prevent the formation of liquid pools and bubbles inside the hollow fiber membrane.
（へ）実施例
以下図に示す実施例に基づいてこの発明を詳述する。な
お、これによってこの発明は限定を受けるものではない
。(F) EXAMPLES The present invention will be described in detail below based on examples shown in the figures. Note that this invention is not limited by this.
第１図において、外圧全量濾過法に使用した中空糸膜モ
ジュールは、有底円筒状で、その周側面に原水人口ｌを
形成した合成樹脂製のケース本体２と、複数本の中空糸
３を通水性の円筒形保護体４によって束ねて構成され、
ケース本体２内に装着された中空糸膜体５と、ケース本
体２の開口２ａに着脱可能に装着され、透過水出口６を
有するキャップ７とを主として備え、原水人口ｌから流
入する原水を圧力下で保護体４および中空糸膜体５を介
して透過させ、透過水を透過水出口６から流出しうるち
のである。In Fig. 1, the hollow fiber membrane module used in the external pressure total filtration method has a cylindrical shape with a bottom, and includes a case body 2 made of synthetic resin with a raw water population 1 formed on the circumferential side, and a plurality of hollow fibers 3. It is configured by being bundled by a water-permeable cylindrical protector 4,
It mainly includes a hollow fiber membrane 5 installed in the case body 2 and a cap 7 that is removably attached to the opening 2a of the case body 2 and has a permeated water outlet 6, and pressurizes the raw water flowing in from the raw water population 1. The permeated water is allowed to permeate through the protector 4 and the hollow fiber membrane 5 at the bottom, and the permeated water flows out from the permeated water outlet 6.
さらに、中空糸膜５の両端部分はそれぞれ接着剤８ａお
よび８ｂによりケース本体２に固定される。Further, both end portions of the hollow fiber membrane 5 are fixed to the case body 2 with adhesives 8a and 8b, respectively.
そして、本実施例では、内径が４００μｍ、外径ｒが６
８０μｍのポリエーテルスルホン製中空糸膜を５０００
（＝ ｎ）本集めて中空糸束（中空糸膜体）５とした
。これを内径Ｒが６５ｘｘφのポリプロピレン製のネッ
ト状保護体４内に収納した。In this example, the inner diameter is 400 μm and the outer diameter r is 6
5000 80 μm polyether sulfone hollow fiber membranes
(=n) were collected to form a hollow fiber bundle (hollow fiber membrane body) 5. This was housed in a net-like protector 4 made of polypropylene and having an inner diameter R of 65xxφ.
この実施例のものは上記構成を有するから、膜モジュー
ルの純水透過速度は単糸の透過速度と実質上差のないも
のであった。Since this example had the above configuration, the pure water permeation rate of the membrane module was substantially the same as the permeation rate of a single fiber.
また、表１に示すように、膜モジユール内に５％過酸化
水素水を入れ、２時間後に超純水を透過水出口６より通
水し、原水人口１より得られる透過水の比抵抗の立ち上
がりを測定したところ、第２図に示す結果が得られた。In addition, as shown in Table 1, 5% hydrogen peroxide solution was put into the membrane module, and after 2 hours, ultrapure water was passed through the permeate outlet 6, and the specific resistance of the permeate obtained from the raw water population 1 was When the rise was measured, the results shown in FIG. 2 were obtained.
第２図において、透過水の比抵抗の回復が早く、中空糸
束的全体に水が流れていることがわかる。In FIG. 2, it can be seen that the specific resistance of permeated water recovers quickly and water flows throughout the hollow fiber bundle.
また、表２は他の実施例の測定結果を示す。Moreover, Table 2 shows the measurement results of other examples.
すなわち、本実施例では、上記実施例と同じ中空糸膜を
４６００本用いて、上記実施例で用いた保護体へ挿入し
、上記実施例と同じ大きさの膜モジュールを作成した。That is, in this example, 4,600 hollow fiber membranes similar to those in the above example were used and inserted into the protector used in the above example to create a membrane module of the same size as in the above example.
そして、上記実施例と同様な評価法により、膜モジュー
ルにおける比抵抗の回復立ち上がり性能を測定したとこ
ろ表２の結果が得られた。この時Ｎの値は１，４１であ
った。Then, the specific resistance recovery performance of the membrane module was measured using the same evaluation method as in the above example, and the results shown in Table 2 were obtained. At this time, the value of N was 1.41.
表２
（ト）発明の効果
この発明によれば、中空糸膜体（中空糸束）を通水性を
有する円筒状の保護体内に収納するとともに、この保護
体の内径（Ｒ）が、中に挿入される中空糸の外径（ｒ）
と本数（ｎ）の間に、第１図
Ｒ＝Ｎ −ｒ −−ｒｎ
が成立し、かつＮを１．３０〜１．４５の範囲に入る数
に設定したことから、加圧された原液が中空糸を揺する
のを防止でき、中空糸膜体へ大きな力がかかるのを回避
できて中空糸に損傷を与えるおそれがなくなるとともに
、中空糸膜体内に液だまりや気泡のたまりが生じるのを
防止でき、中空糸膜体の性能を向上できる効果がある。Table 2 (g) Effects of the invention According to this invention, the hollow fiber membrane body (hollow fiber bundle) is housed in a cylindrical protector having water permeability, and the inner diameter (R) of the protector is Outer diameter of inserted hollow fiber (r)
Since R=N −r −−rn in Figure 1 is established between and the number (n), and N is set to a number within the range of 1.30 to 1.45, This prevents the hollow fibers from shaking, and avoids applying a large force to the hollow fiber membrane body, eliminating the risk of damaging the hollow fibers. This has the effect of improving the performance of the hollow fiber membrane.
第１図はこの発明の一実施例を示す全体構成説明図、第
２図は上記実施例における透過水の比抵抗の立ち上がり
を示す特性図である。
■・・・・・・原水入口、 ２・・・・・・ケース本
体、２ａ・・・・・・開口、 ３−・・・・・中空糸
、４・・・・・・保護体、 ５・・・・・・中空糸膜
体、６・・・・・透過水出口、７・・・・・・キャップ
。
第２図
時間 （す）FIG. 1 is an explanatory view of the overall configuration showing one embodiment of the present invention, and FIG. 2 is a characteristic diagram showing the rise in specific resistance of permeated water in the above embodiment. ■... Raw water inlet, 2... Case body, 2a... Opening, 3-... Hollow fiber, 4... Protector, 5 ...Hollow fiber membrane body, 6 ... Permeated water outlet, 7 ... Cap. Figure 2 Time (su)
Claims (1)
成樹脂製のケース本体と、複数本の中空糸を通水性の円
筒形保護体によって束ねて構成され、上記ケース本体内
に装着された中空糸膜体と、上記ケース本体の開口に着
脱可能に装着され、透過水出口を有するキャップとを備
え、上記原水入口から流入する原水を圧力下で上記保護
体および中空糸膜体を介して透過させ、透過水を上記透
過水出口から流出しうる中空糸膜モジュールにおいて、
上記円筒形保護体の内径（Ｒ）が、上記中空糸の外径（
ｒ）と本数（ｎ）との間に、 Ｒ＝Ｎ・ｒ・√ｎ が成立し、 かつ１．３０≦Ｎ≦１．４５であることを特徴とする中
空糸膜モジュール。[Claims] 1. A case body made of synthetic resin that has a cylindrical shape with a bottom and has a raw water inlet formed on its peripheral side, and a plurality of hollow fibers bundled together by a water-permeable cylindrical protector, A hollow fiber membrane body is installed in the case body, and a cap is removably attached to the opening of the case body and has a permeate outlet, and the raw water flowing in from the raw water inlet is passed through the protective body under pressure. and a hollow fiber membrane module capable of permeating through a hollow fiber membrane body and allowing permeated water to flow out from the permeated water outlet,
The inner diameter (R) of the cylindrical protector is the outer diameter (R) of the hollow fiber (
A hollow fiber membrane module characterized in that R=N・r・√n holds between r) and the number (n), and 1.30≦N≦1.45.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14650688A JPH022832A (en) | 1988-06-13 | 1988-06-13 | Hollow yarn membrane module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14650688A JPH022832A (en) | 1988-06-13 | 1988-06-13 | Hollow yarn membrane module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH022832A true JPH022832A (en) | 1990-01-08 |
Family
ID=15409171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14650688A Pending JPH022832A (en) | 1988-06-13 | 1988-06-13 | Hollow yarn membrane module |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH022832A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018146788A1 (en) * | 2017-02-10 | 2018-08-16 | 旭化成株式会社 | Hollow fiber membrane module and filtration method |
-
1988
- 1988-06-13 JP JP14650688A patent/JPH022832A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018146788A1 (en) * | 2017-02-10 | 2018-08-16 | 旭化成株式会社 | Hollow fiber membrane module and filtration method |
| JPWO2018146788A1 (en) * | 2017-02-10 | 2019-12-12 | 旭化成株式会社 | Hollow fiber membrane module and filtration method |
| US11273412B2 (en) | 2017-02-10 | 2022-03-15 | Asahi Kasei Kabushiki Kaisha | Hollow fiber membrane module and filtration method |
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