JP2774610B2 - Hollow fiber membrane module - Google Patents
Hollow fiber membrane moduleInfo
- Publication number
- JP2774610B2 JP2774610B2 JP1249961A JP24996189A JP2774610B2 JP 2774610 B2 JP2774610 B2 JP 2774610B2 JP 1249961 A JP1249961 A JP 1249961A JP 24996189 A JP24996189 A JP 24996189A JP 2774610 B2 JP2774610 B2 JP 2774610B2
- Authority
- JP
- Japan
- Prior art keywords
- hollow fiber
- fiber membrane
- membrane module
- terminal
- 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.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/02—Hollow fibre modules
- B01D63/021—Manufacturing thereof
- B01D63/022—Encapsulating hollow fibres
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Description
【発明の詳細な説明】 「産業上の利用分野」 本発明は、例えば産業用水・排水などの水処理及び発
酵プロセスにおける除濁・除菌などに用いる過モジュ
ール、詳しくは中空糸膜モジュールに関するものであ
る。Description: TECHNICAL FIELD The present invention relates to an over-module used for water treatment of industrial water and wastewater, and for turbidity and sterilization in a fermentation process, and more particularly to a hollow fiber membrane module. It is.
「従来の技術」 多孔質４弗化エチレン樹脂からなる中空糸膜を多数本
束ねてなるこの種の中空糸膜モジュールとしては、従来
中空糸膜の外筒等支持部材に対する封止部が金属ナトリ
ウムで表現処理された中空糸膜端末と端末封止剤からな
る中空糸膜モジュールがある（即ち４弗化エチレン樹脂
を金属ナトリウムで表面処理し、接着するという手段は
既に行われており、この表面処理は４弗化エチレン樹脂
の表面を改質し、接着力を向上させることを目的とする
ものである）。2. Description of the Related Art A conventional hollow fiber membrane module formed by bundling a large number of hollow fiber membranes made of a porous tetrafluoroethylene resin has a structure in which a sealing portion of a conventional hollow fiber membrane with respect to a support member such as an outer cylinder is made of metallic sodium. There is a hollow fiber membrane module composed of a hollow fiber membrane terminal and a terminal sealing agent expressed by the formula (that is, means of surface-treating and bonding ethylene tetrafluoride resin with metallic sodium has already been performed. The treatment is intended to modify the surface of the ethylene tetrafluoride resin to improve the adhesive strength).
「発明が解決しようとする課題」 従来の上記中空糸膜モジュールを酸化剤系の洗浄剤
（NaClO）で長期に洗浄すると、金属ナトリウムで表面
処理された中空糸膜端末の表面処理層が劣化し、端末封
止剤から中空糸膜が抜けるあるいは中空糸膜と端末封止
剤の間に隙間ができるという欠点がある。[Problems to be Solved by the Invention] When the above-mentioned conventional hollow fiber membrane module is washed with an oxidizing agent-based cleaning agent (NaClO) for a long time, the surface treatment layer of the hollow fiber membrane terminal surface-treated with metallic sodium deteriorates. Further, there is a disadvantage that the hollow fiber membrane comes off from the terminal sealant or a gap is formed between the hollow fiber membrane and the terminal sealant.
上記に鑑み、本発明はこの様な問題点を解決するため
開発されたものである。In view of the above, the present invention has been developed to solve such problems.
「課題を解決するための手段」 即ち本発明は、多孔質４弗化エチレン樹脂からなる中
空糸膜を多数本束ねて構成する中空糸膜モジュールにお
いて、中空糸膜の外筒等支持部材に対する封止部が、外
表面が４弗化エチレン樹脂の熱分解温度以上に加熱さ
れ、かつ金属ナトリウムで表面処理された中空糸膜端末
と端末封止剤から構成することを特徴とする中空糸膜モ
ジュールである。[Means for Solving the Problems] That is, the present invention relates to a hollow fiber membrane module formed by bundling a large number of hollow fiber membranes made of a porous tetrafluoroethylene resin, and sealing the hollow fiber membrane with respect to a support member such as an outer cylinder. A hollow fiber membrane module, wherein the stopper comprises a hollow fiber membrane terminal whose outer surface is heated to a temperature not lower than the thermal decomposition temperature of the ethylene tetrafluoride resin and is surface-treated with metallic sodium and a terminal sealing agent; It is.
なお、本発明の実施の態様として少なくとも下記が含
まれる。The embodiments of the present invention include at least the following.
イ 中空糸膜モジュールが酸化剤系の洗浄剤に供される
ことを特徴とする上記本発明の中空糸膜モジュール。(A) The hollow fiber membrane module according to the present invention, wherein the hollow fiber membrane module is provided with an oxidizing agent-based cleaning agent.
以下に本発明を例示の第１図について詳細に説明す
る。The present invention is described in detail below with reference to FIG.
本発明に於いては、多孔質４弗化エチレン樹脂からな
る中空糸膜（１）の端末（４）の外表面を４弗化エチレ
ン樹脂の熱分解温度以上に加熱し、かつ金属ナトリウム
で表面処理した後、端末封止剤（３）と固着し、中空糸
膜モジュールとする。In the present invention, the outer surface of the terminal (4) of the hollow fiber membrane (1) made of a porous tetrafluoroethylene resin is heated to a temperature not lower than the thermal decomposition temperature of the tetrafluoroethylene resin, and the surface is treated with metallic sodium. After the treatment, it is fixed to the terminal sealant (3) to obtain a hollow fiber membrane module.
なお第１図中、（２）は中空糸膜を支持する例えばス
テンレス製の外筒であり、矢印は過される液体の流れ
（矢印Ａ）、過された液体の流れ（矢印Ｂ）を示して
いる。In FIG. 1, (2) is an outer cylinder made of, for example, stainless steel that supports the hollow fiber membrane, and arrows show the flow of the passed liquid (arrow A) and the flow of the passed liquid (arrow B). ing.
「作用」 多孔質４弗化エチレン樹脂からなる中空糸膜の構造
は、繊維と結節からなっている（例えば特公昭42−1356
0号により製造出来る）。"Function" The structure of a hollow fiber membrane made of a porous tetrafluoroethylene resin is composed of fibers and knots (for example, Japanese Patent Publication No. 42-1356).
No. 0).
外表面を４弗化エチレン樹脂の熱分解温度以上に加熱
すると結節が集合し、より太い結節となる。この太い結
節は本質的に無孔質である。When the outer surface is heated above the thermal decomposition temperature of the ethylene tetrafluoride resin, the nodules aggregate and become thicker. This thick nodule is essentially non-porous.
加熱時間を長くすると外表面から内部に向って深い部
分まで、この太い結節が成長する。このため中空糸外表
面に凹凸が形成され、接着くさび効果及び接着面積の増
加により中空糸膜と支持部材との接着力が良好となる。When the heating time is increased, the thick nodules grow from the outer surface to the deeper portion toward the inside. As a result, irregularities are formed on the outer surface of the hollow fiber, and the adhesive wedge effect and the increase in the adhesive area improve the adhesive strength between the hollow fiber membrane and the support member.
さらに酸化剤系洗浄剤で中空糸膜端末の表面処理層が
劣化するメカニズムは、酸化剤系洗浄剤が中空糸膜の多
孔部から浸入し、無孔部の表面処理層と接触することに
よる。Furthermore, the mechanism by which the surface treatment layer of the end of the hollow fiber membrane is deteriorated by the oxidizing agent-based cleaning agent is due to the penetration of the oxidizing agent-based cleaning agent from the porous portion of the hollow fiber membrane and contact with the surface treatment layer of the non-porous portion.
従って、無孔部を太くすることによって、酸化剤系洗
浄剤の浸入を防ぎ劣化に対し有効に働く。Therefore, by making the non-porous portion thicker, it is possible to prevent the oxidizing agent-based cleaning agent from entering and effectively work against deterioration.
なお多孔質４弗化エチレン樹脂からなる中空糸膜を金
属ナトリウムで処理する理由は従来と同様である。The reason why the hollow fiber membrane made of porous tetrafluoroethylene resin is treated with metallic sodium is the same as the conventional one.
「実施例」 以下に本発明の実施例を述べる。"Examples" Examples of the present invention will be described below.
４弗化エチレン樹脂の熱分解温度以上に加熱する方法
の一例として火炎を用いた（プロパンガス1.2/min,空
気11/min）。A flame was used as an example of a method for heating the polytetrafluoroethylene resin to a temperature higher than the thermal decomposition temperature (propane gas 1.2 / min, air 11 / min).
実施例1: 多孔質４弗化エチレンからなる中空糸膜（内径φ2mm,
外径φ3mm,長さ1000mm）の端末（両端から40mm）の外表
面を5m/minの速度で火炎処理を行なった。Example 1: Hollow fiber membrane made of porous tetrafluoroethylene (inner diameter φ2 mm,
The outer surface of a terminal (40 mm from both ends) having an outer diameter of φ3 mm and a length of 1000 mm was subjected to a flame treatment at a speed of 5 m / min.
次に端末をテトラエッチ（活性金属ナトリウム：潤工
社製）で表面処理を行った。Next, the terminal was surface-treated with tetraetch (active metal sodium: manufactured by Junkosha).
該中空糸膜を200本束ねて中空糸膜モジュールを製造
した。200 hollow fiber membranes were bundled to produce a hollow fiber membrane module.
比較例1: 中空糸膜端末は火炎処理のみとし、モジュールを製造
した。Comparative Example 1: A hollow fiber membrane terminal was subjected to flame treatment only, and a module was manufactured.
比較例2: 中空糸膜端末はテトラエッチの表面処理のみとし、モ
ジュールを製造した。Comparative Example 2: A module was manufactured by using only a surface treatment of tetra-etch as a hollow fiber membrane terminal.
評価方法として、第１表に示す各種洗浄剤で中空糸膜
モジュールの長期洗浄を行い、中空糸膜と端末封止剤間
の隙間発生の有無を調べた。結果を第２表に示す。As an evaluation method, the hollow fiber membrane module was subjected to long-term cleaning with the various cleaning agents shown in Table 1 and the presence or absence of a gap between the hollow fiber membrane and the terminal sealant was examined. The results are shown in Table 2.
なお上記第１、２表に関連して各種汚染物質とその洗
浄剤例を参考までに示せば第３表の通りである（フジ・
テクノシステム昭59.8.1「最新の膜処理技術とその応
用」参照）。 It should be noted that various contaminants and examples of their cleaning agents are shown in Table 3 with reference to Tables 1 and 2 above (Fuji.
Techno System, 59.8.1, “Latest Membrane Processing Technology and Its Applications”).
「発明の効果」 本発明による中空糸膜モジュールは、中空糸膜と端末
封止部の固着に対する信頼性があり、耐久性に優れてい
る。特に酸化剤系の洗浄剤に供される過モジュールと
して使用すると、効果的である。 [Effects of the Invention] The hollow fiber membrane module according to the present invention has a high reliability with respect to the adhesion between the hollow fiber membrane and the terminal sealing portion, and has excellent durability. In particular, it is effective when used as an excess module provided for an oxidant-based cleaning agent.
第１図は本発明の中空糸膜モジュールを説明する縦断面
図を例示している。 （１）……中空糸膜、（２）……外筒、（３）……端末
封止剤、（４）……中空糸膜端末FIG. 1 illustrates a longitudinal sectional view for explaining a hollow fiber membrane module of the present invention. (1) ... hollow fiber membrane, (2) ... outer cylinder, (3) ... terminal sealant, (4) ... hollow fiber membrane terminal
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平２−174915（ＪＰ，Ａ) 特開 平３−106422（ＪＰ，Ａ) 特開 平２−52024（ＪＰ，Ａ) 特開 平２−284634（ＪＰ，Ａ) 特開 平１−224008（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) B01D 63/02 B01D 63/00──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-174915 (JP, A) JP-A-3-106422 (JP, A) JP-A-2-52024 (JP, A) JP-A-2- 284634 (JP, A) JP-A-1-224008 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) B01D 63/02 B01D 63/00
Claims (1)
膜を多数本束ねて構成する中空糸膜モジュールに於い
て、中空糸膜の外筒等支持部材に対する封止部が、外表
面が４弗化エチレン樹脂の熱分解温度以上に加熱され、
かつ金属ナトリウムで表面処理された中空糸膜端末と端
末封止剤から構成されることを特徴とする中空糸膜モジ
ュール。In a hollow fiber membrane module comprising a plurality of hollow fiber membranes made of a porous tetrafluoroethylene resin, a sealing portion of a hollow fiber membrane for a supporting member such as an outer cylinder has an outer surface. Heated above the thermal decomposition temperature of the tetrafluoroethylene resin,
A hollow fiber membrane module comprising a hollow fiber membrane terminal surface-treated with metallic sodium and a terminal sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1249961A JP2774610B2 (en) | 1989-09-25 | 1989-09-25 | Hollow fiber membrane module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1249961A JP2774610B2 (en) | 1989-09-25 | 1989-09-25 | Hollow fiber membrane module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03109927A JPH03109927A (en) | 1991-05-09 |
| JP2774610B2 true JP2774610B2 (en) | 1998-07-09 |
Family
ID=17200767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1249961A Expired - Lifetime JP2774610B2 (en) | 1989-09-25 | 1989-09-25 | Hollow fiber membrane module |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2774610B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5543875B2 (en) * | 2010-08-06 | 2014-07-09 | 旭化成メディカル株式会社 | Hollow fiber module |
| JP7694278B2 (en) * | 2021-09-13 | 2025-06-18 | 住友電気工業株式会社 | Hollow fiber membrane module |
-
1989
- 1989-09-25 JP JP1249961A patent/JP2774610B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03109927A (en) | 1991-05-09 |
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