JPH0761420B2 - Hollow fiber type filter - Google Patents
Hollow fiber type filterInfo
- Publication number
- JPH0761420B2 JPH0761420B2 JP61239099A JP23909986A JPH0761420B2 JP H0761420 B2 JPH0761420 B2 JP H0761420B2 JP 61239099 A JP61239099 A JP 61239099A JP 23909986 A JP23909986 A JP 23909986A JP H0761420 B2 JPH0761420 B2 JP H0761420B2
- Authority
- JP
- Japan
- Prior art keywords
- hollow fiber
- filter
- type filter
- pipe
- fiber type
- 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.)
- Expired - Lifetime
Links
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- Separation Using Semi-Permeable Membranes (AREA)
Description
【発明の詳細な説明】 （発明の技術分野） 本発明は、溶液中のコロイド物質を除去するための、外
圧使用の中空糸型濾過器に関する。Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a hollow fiber type filter using external pressure for removing colloidal substances in a solution.
（従来技術とその問題点） 中空糸型濾過器は、単位容積当りの膜面積が多くとれる
ために経済的で半導体、医薬、食品等の様々な分野で使
用されている。中空糸の径を細くすると、単位容積当り
の膜の充填本数を増加できるが、中空糸内を流れる水の
抵抗のため、中空糸型濾過器の長さは1m程度のものが通
常使用されている。しかし、最近、原子力発電所等では
設置面積をできるだけ小さくするために、中空糸型濾過
器の長さを長くする傾向がある。原子力発電所に使用す
る濾過器は、外圧全濾過の懸垂型の濾過器であって、濾
過器の下端部は閉止して、濾過液は濾過器の上端に抜き
出される。したがって、濾過器の長さが長くなると、中
空糸内を流れる水の抵抗で、濾過器の長さを長くして
も、ほとんど濾過液量が増加しなくなる。特開昭60−20
6405号、特開昭60−244306号では、中空糸型濾過器の内
部に集水管を配設し、濾過器の両端部は開口状態とし、
下端部には濾水の集水室を設け、下端部の集水室に抜け
た濾水を集水管を通して、上端部に集めて、中空糸膜内
部の流動抵抗を下げることが提案されている。(Prior Art and Problems Thereof) Hollow fiber type filters are economical because they have a large membrane area per unit volume and are used in various fields such as semiconductors, pharmaceuticals, and foods. If the diameter of the hollow fiber is reduced, the number of membranes packed per unit volume can be increased.However, due to the resistance of water flowing in the hollow fiber, a hollow fiber type filter with a length of about 1 m is usually used. There is. However, recently, in nuclear power plants and the like, there is a tendency to increase the length of the hollow fiber type filter in order to make the installation area as small as possible. The filter used in a nuclear power plant is a suspended type filter of external pressure full filtration, the lower end of the filter is closed, and the filtrate is withdrawn to the upper end of the filter. Therefore, when the length of the filter becomes long, the resistance of water flowing in the hollow fiber hardly increases the amount of the filtrate even if the length of the filter is increased. JP-A-60-20
In 6405 and JP-A-60-244306, a water collecting pipe is arranged inside a hollow fiber type filter, and both ends of the filter are opened.
It has been proposed to provide a drainage collection chamber at the lower end and collect the drained drainage from the lower collection chamber at the upper end through a collection pipe to reduce the flow resistance inside the hollow fiber membrane. .
しかし、原子力発電所で使用される濾過器は使用後は、
放射能を帯びているために、焼却可能で、しかも腐食性
ガスを発生しない、ポリエチレン、ポリプロピレン等の
ポリオレフィン系の部材を使う必要がある。ポリオレフ
ィン系の集水管を用いると、ポリオレフィン系のパイプ
と接着する接着剤がないために、集水管に何らかのシー
ル機構を設ける必要があり、ハウジング内に充填できる
中空糸の本数が少なくなるという欠点があった。However, after the filter used in the nuclear power plant is used,
Since it is radioactive, it is necessary to use polyolefin-based members such as polyethylene and polypropylene that can be incinerated and do not generate corrosive gas. When a polyolefin-based water collection pipe is used, there is no adhesive that adheres to the polyolefin-based pipe, so it is necessary to provide some kind of sealing mechanism on the water collection pipe, and the number of hollow fibers that can be filled in the housing decreases. there were.
本発明者は、これらの欠点を解決するために、特願昭61
−93437号（特公平２−12131号）で大径中空糸と小径中
空糸を混入することによって、大径中空糸には濾過機能
と集液機能を持たせ、特開昭60−206405号より濾液量の
多い濾過器の開発に成功した。しかし、特願昭61−9343
7号の濾過器にも大径中空糸と小径中空糸を同一材質と
すると、大径中空糸の耐圧強度が低下し、耐圧強度を上
げようとすると、大径中空糸の肉厚が厚くなり、大径中
空糸の充填本数が減少し、思ったより濾液量が増加しな
いという問題点があった。The inventors of the present invention have proposed a Japanese Patent Application No.
-93437 (Japanese Patent Publication No. 2-12131) has a large hollow fiber having a filtering function and a liquid collecting function by mixing a large hollow fiber and a small hollow fiber. We succeeded in developing a filter with a large amount of filtrate. However, Japanese Patent Application No. Sho 61-9343
If the large-diameter hollow fiber and the small-diameter hollow fiber are made of the same material in the No. 7 filter, the pressure resistance of the large-diameter hollow fiber will decrease. However, there is a problem in that the number of large hollow fibers to be filled decreases and the amount of filtrate does not increase more than expected.
（発明の目的） 本発明の目的は上述の問題点を解決するために、中空糸
の膜面積を減少させないで、中空糸内の流動抵抗を下
げ、しかも空気洗浄性の良い中空糸型濾過器を提供する
にある。(Object of the invention) In order to solve the above-mentioned problems, the object of the present invention is to reduce the flow resistance in the hollow fiber without reducing the membrane area of the hollow fiber, and further, the hollow fiber filter having good air-cleanability. To provide.
（発明の構成） 本発明の中空糸型濾過器は、多数の中空糸濾過膜を、外
筒内にほぼ直線状に配列し、該中空糸両端を開口状態で
接着剤で固定した中空糸型濾過器において、該濾過器の
一方の開口端には濾液を収集する集液室を付設し、中空
糸束中には内径５〜50mm（ただし５は含まず）の多孔質
パイプを混入させたことを特徴とする。(Structure of the Invention) A hollow fiber type filter of the present invention is a hollow fiber type in which a large number of hollow fiber filtration membranes are arranged in a substantially straight line in an outer cylinder, and both ends of the hollow fiber are fixed with an adhesive in an open state. In the filter, a collection chamber for collecting the filtrate was attached to one open end of the filter, and a porous pipe having an inner diameter of 5 to 50 mm (not including 5) was mixed in the hollow fiber bundle. It is characterized by
（実施態様及び作用） 以下、本発明を図面に示す１実施例によって説明する
が、本発明はこの範囲に限定されるものではない。本発
明の濾過器は、第１図に示すように、両端が開口された
多数の中空糸10及び多孔質パイプ11を外筒16の中に、上
下の接着剤４によって固定し、濾過器の下端部には、濾
過液の集液室５が平パッキング９′によって密封して設
けられている。集液室５の周囲にはスカート状の凹部６
が０−リング９によって外筒16に密封して設けられてい
る。凹部６は下端がスカート状に開がっていて空気を集
合し易い形状である。集めた空気はスリット７、空気導
入口８を通って濾過器３内に入る。(Embodiment and Action) Hereinafter, the present invention will be described with reference to one embodiment shown in the drawings, but the present invention is not limited to this range. In the filter of the present invention, as shown in FIG. 1, a large number of hollow fibers 10 having both ends opened and a porous pipe 11 are fixed in an outer cylinder 16 by upper and lower adhesives 4, and At the lower end, a liquid collection chamber 5 for the filtrate is provided in a sealed manner by a flat packing 9 '. A skirt-shaped recess 6 is provided around the liquid collection chamber 5.
Are sealed in the outer cylinder 16 by a 0-ring 9. The recess 6 has a shape in which the lower end is opened in a skirt shape and air can be easily collected. The collected air enters the filter 3 through the slit 7 and the air inlet 8.
公知の濾過器に使用する中空糸は、通常内径0.1〜0.8m
m、外径0.3〜1.5mm程度のものであるが、本発明では第
２図に示すように、通常の中空糸10中に、内径５〜50mm
（ただし５は含まず）の多孔質パイプ11が混入されてい
る。この多孔質パイプは処理液の濾過と同時に、集液室
５に集められた濾液通路の作用も行なう。本発明でいう
多孔質パイプは、第３図（イ）及び（ロ）に示すよう
に、多孔質パイプ（21）又は有孔パイプ（19）の外側に
多孔質のフィルムやシート（20）を被膜したものを含
む。本発明の多孔質パイプの内径は５〜50mm（ただし５
は含まず）が好ましく、内径が5mm未満では中空糸の流
動抵抗を下げるには、多孔質パイプを多数本混入する必
要があり経済的でない。また内径が50mmを超えると濾過
器の外筒の大きさにもよるが、充填できる中空糸の本数
が少なくなり経済的でない。また、中空糸に混入される
多孔質パイプの本数は１本でも複数本でも良い。Hollow fibers used in known filters usually have an inner diameter of 0.1 to 0.8 m.
m, the outer diameter is about 0.3 to 1.5 mm, but in the present invention, as shown in FIG.
(However, 5 is not included) The porous pipe 11 is mixed. At the same time as filtering the treatment liquid, this porous pipe also acts as a filtrate passage collected in the liquid collection chamber 5. The porous pipe according to the present invention has a porous film or sheet (20) on the outside of the porous pipe (21) or the perforated pipe (19) as shown in FIGS. 3 (a) and 3 (b). Including those coated. The inner diameter of the porous pipe of the present invention is 5 to 50 mm (5
Is not preferable), and if the inner diameter is less than 5 mm, it is necessary to mix a large number of porous pipes in order to reduce the flow resistance of the hollow fiber, which is not economical. Also, if the inner diameter exceeds 50 mm, the number of hollow fibers that can be filled is reduced, which is not economical, depending on the size of the outer cylinder of the filter. Further, the number of porous pipes mixed in the hollow fiber may be one or plural.
第４図は本発明の中空糸型濾過器の使用態様を示す。濾
過器３は、圧力容器１内の仕切板２に懸垂されている。
圧力容器には被処理液の導入管12、濾過液の取出管13、
中空糸に付着した金属コロイド等の排出口14、濾過器へ
の空気導入ノズル15及び18が設けてある。被処理液は濾
過器の外筒16に設けた孔17より濾過器内に入り、中空糸
10及び多孔質パイプ11の外側より濾過されて中空糸内を
流れる。濾過器の下端に流れた濾過液は、濾過器下端の
集液室５に集まり、次いで、内径５〜50mm（ただし５は
含まず）の多孔質パイプ11を通って、仕切板２の上方に
送られ、上端に流れた濾液と一緒になって濾過液の取出
管13より系外に抜き出される。FIG. 4 shows a usage mode of the hollow fiber type filter of the present invention. The filter 3 is suspended from the partition plate 2 in the pressure vessel 1.
The pressure vessel has an inlet pipe 12 for the liquid to be treated, an outlet pipe 13 for the filtered liquid,
An outlet 14 for the metal colloid adhering to the hollow fiber and air introduction nozzles 15 and 18 for the filter are provided. The liquid to be treated enters the inside of the filter through the hole 17 provided in the outer cylinder 16 of the filter, and the hollow fiber
It is filtered from the outside of the porous pipe 11 and the porous pipe 11 and flows in the hollow fiber. The filtrate flowing to the lower end of the filter collects in the liquid collecting chamber 5 at the lower end of the filter, and then passes through the porous pipe 11 having an inner diameter of 5 to 50 mm (excluding 5) to the upper side of the partition plate 2. The filtrate, together with the filtrate that has been sent to the upper end, is withdrawn from the system through a filtrate take-out pipe 13.
中空糸型濾過器の濾過差圧が一定圧力以上となると中空
糸膜に付着した金属コロイド等を除去するために、濾過
を止めて、逆洗又はエアスクラビングが行なわれる。即
ち、濾過液の取出管13に設けた、空気導入ノズル18より
空気を導入して圧力容器１内の仕切板２の上部に溜った
濾液を押し出す逆洗、あるいは、圧力容器１の下方に設
けた空気導入ノズル15より空気を導入し、濾過器下部に
設けたスカート状の空気集合用凹部６に空気を集め、該
空気をスリット７及び空気導入孔８を通って中空糸10多
孔質パイプ11に沿って上昇させながら中空糸を振動さ
せ、エアスクラビングを行なう。中空糸から脱落した金
属コロイド等は中空糸型濾過器外筒の下部の孔17、ある
いは、空気導入用孔８より取り出して、圧力容器の下部
に設けた排出口14より系外に抜き出される。洗浄により
能力を回復した濾過器は再び使用される。When the filtration differential pressure of the hollow fiber type filter exceeds a certain pressure, the filtration is stopped and backwashing or air scrubbing is performed in order to remove the metal colloid and the like adhering to the hollow fiber membrane. That is, backwashing in which air is introduced from the air introduction nozzle 18 provided in the filtrate take-out pipe 13 and the filtrate accumulated in the upper part of the partition plate 2 in the pressure vessel 1 is extruded, or it is provided below the pressure vessel 1. The air is introduced from the air introduction nozzle 15, and the air is collected in the skirt-shaped air collecting concave portion 6 provided in the lower portion of the filter, and the air is passed through the slit 7 and the air introduction hole 8 to form the hollow fiber 10 and the porous pipe 11. Air scrubbing is performed by vibrating the hollow fiber while raising along. The metal colloid dropped off from the hollow fiber is taken out from the hole 17 in the lower part of the hollow fiber type filter outer tube or the air introduction hole 8 and taken out of the system through the discharge port 14 provided in the lower part of the pressure vessel. . The filter whose capacity has been restored by washing is reused.
（発明の効果） 本発明によれば、中空糸と多孔質パイプの両方が濾過に
寄与しているために濾過量が多くとれ、しかも多孔質パ
イプが集液室に集められた濾液通路の役目をするので、
中空糸内の流動抵抗を下げることができ、長尺モジュー
ルでも低圧で濾過量を多くとることが可能である。更
に、本発明の多孔質パイプは多孔フィルムあるいは多孔
シートの無数の孔が接着剤に対するアンカー効果となっ
て、特殊なシール機構を設けなくとも、もれる心配がな
いため、膜面積を多くとることが可能である。(Effect of the invention) According to the present invention, since both the hollow fiber and the porous pipe contribute to the filtration, a large filtration amount can be obtained, and the role of the filtrate passage in which the porous pipe is collected in the collecting chamber is Because
The flow resistance in the hollow fiber can be lowered, and even a long module can take a large amount of filtration at low pressure. Further, in the porous pipe of the present invention, the innumerable holes of the porous film or sheet act as an anchor effect for the adhesive, and there is no fear of leakage even if a special sealing mechanism is not provided. Is possible.
図は本発明の１実施例を示すもので、第１図は、濾過器
の概略断面図、第２図は中空糸の分散状態を示す説明
図、第３図は多孔質パイプの概要を示す説明図で、
（イ）（ロ）はそれぞれ変形例である。第４図は濾過器
の使用状態を示す説明図である。 １……圧力容器、２……仕切板、３……中空糸型濾過
器、４……接着剤、５……集液室、６……空気集合用凹
部、７……スリット、８……空気導入用孔、９……０−
リング、９′……平パッキング、10……細い中空糸、11
……多孔質パイプ、12……被処理液導入管、13……濾過
液の取出管、14……金属コロイドの排出口、15……空気
導入ノズル、16……外筒、17……孔、18……空気導入ノ
ズル、19……有孔パイプ、20……多孔フィルム又は多孔
シート、21……多孔質パイプ。FIG. 1 shows one embodiment of the present invention. FIG. 1 is a schematic sectional view of a filter, FIG. 2 is an explanatory view showing a dispersed state of hollow fibers, and FIG. 3 is an outline of a porous pipe. In the illustration,
(A) and (b) are modifications. FIG. 4 is an explanatory view showing a usage state of the filter. 1 ... Pressure vessel, 2 ... Partition plate, 3 ... Hollow fiber type filter, 4 ... Adhesive, 5 ... Liquid collecting chamber, 6 ... Air collecting recess, 7 ... Slit, 8 ... Air introduction hole, 9 ... 0-
Ring, 9 '... flat packing, 10 ... thin hollow fiber, 11
…… Porous pipe, 12 …… Liquid to be treated introduction pipe, 13 …… Filtrate extraction pipe, 14 …… Metal colloid discharge port, 15 …… Air introduction nozzle, 16 …… Outer cylinder, 17 …… Hole , 18 ... Air introduction nozzle, 19 ... Perforated pipe, 20 ... Porous film or sheet, 21 ... Porous pipe.
Claims (2)
状に配列し、該中空糸両端を開口状態で接着剤で固定し
た中空糸型濾過器において、該濾過器の一方の開口端に
は濾液を収集する集液室を付設し、中空糸束中には内径
５〜50mm（ただし５は含まず）の多孔質パイプを混入さ
せたことを特徴とする中空糸型濾過器。1. A hollow fiber type filter in which a large number of hollow fiber filtration membranes are arranged substantially linearly in an outer cylinder and both ends of the hollow fiber are fixed with an adhesive in an open state. A hollow fiber type filter characterized in that a collecting chamber for collecting filtrate is attached to the open end, and a porous pipe having an inner diameter of 5 to 50 mm (excluding 5) is mixed in the hollow fiber bundle. .
凹部を設けた特許請求の範囲第１項記載の中空糸型濾過
器。2. The hollow fiber type filter according to claim 1, wherein a skirt-shaped recess for collecting air is provided at the lower end of the filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61239099A JPH0761420B2 (en) | 1986-10-09 | 1986-10-09 | Hollow fiber type filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61239099A JPH0761420B2 (en) | 1986-10-09 | 1986-10-09 | Hollow fiber type filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6393308A JPS6393308A (en) | 1988-04-23 |
| JPH0761420B2 true JPH0761420B2 (en) | 1995-07-05 |
Family
ID=17039794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61239099A Expired - Lifetime JPH0761420B2 (en) | 1986-10-09 | 1986-10-09 | Hollow fiber type filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0761420B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1005432C2 (en) * | 1997-03-04 | 1998-09-07 | Stork Friesland Bv | Membrane filtration module and like modules comprising membrane filtration system. |
| NL1008381C2 (en) * | 1998-02-20 | 1999-08-24 | X Flow Bv | Filter device. |
| KR19990045939A (en) * | 1999-02-24 | 1999-06-25 | 장문석 | Improved hollow fiber membrane module and method of treating waste water using same |
| JP4934978B2 (en) * | 2005-03-28 | 2012-05-23 | 東レ株式会社 | Hollow fiber membrane module |
| JP2015006653A (en) * | 2013-05-30 | 2015-01-15 | 住友電気工業株式会社 | Filtration module, and filtration device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0212131A (en) * | 1988-06-29 | 1990-01-17 | Nec Corp | Directional coupler type optical switch |
-
1986
- 1986-10-09 JP JP61239099A patent/JPH0761420B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0212131A (en) * | 1988-06-29 | 1990-01-17 | Nec Corp | Directional coupler type optical switch |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6393308A (en) | 1988-04-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |