JPH0463117A - Hollow fiber membrane-type separation unit and its manufacture - Google Patents
Hollow fiber membrane-type separation unit and its manufactureInfo
- Publication number
- JPH0463117A JPH0463117A JP17186090A JP17186090A JPH0463117A JP H0463117 A JPH0463117 A JP H0463117A JP 17186090 A JP17186090 A JP 17186090A JP 17186090 A JP17186090 A JP 17186090A JP H0463117 A JPH0463117 A JP H0463117A
- Authority
- JP
- Japan
- Prior art keywords
- hollow fiber
- fiber membrane
- olefin resin
- separation unit
- sealant
- 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.)
- Granted
Links
- 239000012510 hollow fiber Substances 0.000 title claims abstract description 87
- 238000000926 separation method Methods 0.000 title claims abstract description 47
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 239000012528 membrane Substances 0.000 claims abstract description 103
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 229920005672 polyolefin resin Polymers 0.000 claims description 35
- 239000000565 sealant Substances 0.000 claims description 30
- 239000000843 powder Substances 0.000 claims description 27
- 239000007788 liquid Substances 0.000 claims description 23
- 238000002844 melting Methods 0.000 claims description 16
- 230000008018 melting Effects 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 230000005484 gravity Effects 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 5
- 239000003960 organic solvent Substances 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 4
- 238000009835 boiling Methods 0.000 claims description 2
- -1 polypropylene Polymers 0.000 abstract description 20
- 239000004698 Polyethylene Substances 0.000 abstract description 13
- 229920000573 polyethylene Polymers 0.000 abstract description 13
- 239000002904 solvent Substances 0.000 abstract description 9
- 239000000126 substance Substances 0.000 abstract description 9
- 239000004743 Polypropylene Substances 0.000 abstract description 7
- 239000003795 chemical substances by application Substances 0.000 abstract description 7
- 229920001155 polypropylene Polymers 0.000 abstract description 7
- 230000001681 protective effect Effects 0.000 abstract description 2
- 239000011347 resin Substances 0.000 abstract 4
- 229920005989 resin Polymers 0.000 abstract 4
- 239000000835 fiber Substances 0.000 abstract 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 9
- 235000019441 ethanol Nutrition 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 235000013405 beer Nutrition 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 239000012046 mixed solvent Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
Abstract
Description
「発明の目的」 "Purpose of invention"
本発明は、中空糸型膜分離ユニット及びその製造方法に
関する。The present invention relates to a hollow fiber membrane separation unit and a method for manufacturing the same.
一般に、種々の高分子等の有機材料又はガラス。
セラミックス等の無機材料よりなる機能性膜は、逆浸透
、限外濾過、精密濾過、透析、気体分離等のように、気
体−気体、気体−液体、気体−同体。
液体−液体、液体−同体等の分離において種々の産業分
野にて有効に利用されている。
このうち、高分子材質としては再生セルローズ、セルロ
ーズエステル、ポリアミド、ポリカーボネート、ポリ塩
化ビニル、ポリエステル、ポリアクリロニトリル、ポリ
メチルメタクリレート、ポリサルフォン、ポリオレフィ
ン、弗素樹脂等はとんどのものが利用可能であり、対象
流体の性質、分離目的、操作条件などにより使い分けら
れている。
また、分離膜の形状には、大別して平板状膜と中空糸状
膜とがある。
前述した通り種々の分離膜は対象流体の性質、分離目的
、操作条件などにより使い分けられているが、実際に使
用される場合には分離膜単独で使用されることはほとん
どなく膜支持体、保護筒などの補強部材と共に組立てら
れ、ユニット化された状態で使用される。
この場合、いずれにしても膜材質と膜の補強材とは同系
統の材質である事は当然であり平板膜においては、はぼ
補強材が膜と同じ材質で構成されている。
しかし、一方、中空糸型膜分離ユニットにおいて、中空
糸膜相互の隙間が微細であるため平板膜の組立方法をそ
のまま適用することは困難であった。
この為、中空糸型膜分離ユニットの場合、中空糸膜の結
束端部における中空糸膜相互の隙間を埋める公知の手段
としては、２種類の液体を混合させ反応により硬化させ
るウレタン樹脂やエポキシ樹脂を用いる手段しか実施さ
れてぃなかった。Generally, organic materials such as various polymers or glasses. Functional membranes made of inorganic materials such as ceramics are used for gas-gas, gas-liquid, and gas-isomers, such as reverse osmosis, ultrafiltration, precision filtration, dialysis, and gas separation. It is effectively used in various industrial fields for the separation of liquids and liquids, liquids and solids, etc. Among these, most of the polymer materials that can be used include recycled cellulose, cellulose ester, polyamide, polycarbonate, polyvinyl chloride, polyester, polyacrylonitrile, polymethyl methacrylate, polysulfone, polyolefin, and fluororesin. Different types are used depending on the properties of the fluid, separation purpose, operating conditions, etc. Furthermore, the shapes of separation membranes are broadly classified into flat membranes and hollow fiber membranes. As mentioned above, various separation membranes are used depending on the properties of the target fluid, separation purpose, operating conditions, etc. However, in actual use, separation membranes are rarely used alone, and membrane supports, protection It is assembled with reinforcing members such as cylinders and used as a unit. In this case, it goes without saying that the membrane material and the membrane reinforcing material are of the same type, and in the case of a flat membrane, the dowel reinforcing material is made of the same material as the membrane. However, on the other hand, in hollow fiber type membrane separation units, it has been difficult to apply the assembling method of flat membranes as is because the gaps between the hollow fiber membranes are minute. For this reason, in the case of a hollow fiber membrane separation unit, the known means for filling the gaps between the hollow fiber membranes at the bundled ends of the membranes is urethane resin or epoxy resin, which is a mixture of two types of liquids and cured by reaction. The only method used was to use
このため、従来の中空糸型膜分離ユニットにおいては耐
溶剤性、耐薬品性、耐水溶性を要求された場合、どんな
に十分な耐性を有する膜材質、例えばポリテトラフロロ
エチレン等の弗素樹脂製膜等を選定しても封止剤である
ウレタン樹脂、エポキシ樹脂などの材質に分離ユニット
自体の特性も左右されてしまっていた。このため平板型
膜分離ユニットに比較して小型化が可能な優位性を有し
ながら中空糸型膜分離ユニットの用途が制限されている
のが実情であった。
本発明は、このような中空糸型膜分離ユニットの有する
課題について着目し、中空糸膜及び中空糸膜結束端部に
おける中空糸膜相互の隙間を封止する封止剤をいずれも
耐薬品性、耐溶剤性に比較的価れた素材を採用すること
により分離ユニット全体を耐溶剤性、耐薬品性等に優れ
、しかも、安価で小型化を可能とした中空糸型膜分離ユ
ニットを提供することを目的としている。
「発明の構成」For this reason, in conventional hollow fiber membrane separation units, when solvent resistance, chemical resistance, and water solubility resistance are required, no matter how resistant the membrane material is, for example, fluororesin membranes such as polytetrafluoroethylene, etc. Even if one were selected, the characteristics of the separation unit itself were affected by the material of the sealant, such as urethane resin or epoxy resin. For this reason, although hollow fiber membrane separation units have the advantage of being smaller in size compared to flat plate membrane separation units, the actual situation is that the applications of hollow fiber membrane separation units are limited. The present invention focuses on the problems faced by such a hollow fiber membrane separation unit, and uses chemical-resistant sealants for sealing the hollow fiber membranes and the gaps between the hollow fiber membranes at the ends of the hollow fiber membrane binding. To provide a hollow fiber type membrane separation unit that has excellent solvent resistance, chemical resistance, etc. as a whole by adopting a material with relatively high solvent resistance, and can be made inexpensive and compact. The purpose is to "Structure of the invention"
本発明は上記の目的を達成するため、第一の発明は、高
分子材料よりなる複数の中空糸膜を結束し、この中空糸
膜の結束端部における中空糸膜相互の隙間を封止剤によ
って封止した中空糸型膜分離ユニットにおいて、少なく
とも中空糸膜及び結束端部の封止剤の材質がいずれもオ
レフィン系樹脂である中空糸型膜分離ユニットである。
この分離ユニットの場合、中空糸膜を構成する第１のオ
レフィン系樹脂の融点より封止剤を構成する第２のオレ
フィン系樹脂の融点が低温域にあることが好ましい。
また、第二の発明は、高分子材料よりなる複数の中空糸
膜を結束し、結束端部において中空糸膜相互の隙間を封
止する方法において、まず、中空糸膜を構成する第１の
オレフィン系樹脂の融点より低温域に融点を有する封止
剤を構成する第２のオレフィン系樹脂の微粉末に、これ
を流動させるための液体を加え高濃度懸濁液を調整し、
次いで、中空糸膜を結束し、結束端部を該高濃度懸濁液
に浸漬し、少なくとも中空糸膜結束端部の温度が中空糸
膜を構成する第１のオレフィン系樹脂の融点以下で、か
つ封止剤を構成する第２のオレフィン系樹脂の融点以上
の温度になるよう加熱し、更に、中空糸膜結束端部にお
いて、微粉末流動の為に混ぜた液体が蒸発し、かつ封止
剤微粉末が溶融流動状態になった後、常温まで徐冷固化
させる工程を経ることにより中空糸膜結束端部の中空糸
膜相互の隙間を封止して組立てる中空糸型膜分離ユニッ
トの製造方法である。
この場合、封止剤を構成する第２のオレフィン系樹脂微
粉末を流動させる為の液体は水または水と相溶性を有す
る有機溶剤との混合液であったり、または、封止剤を構
成する第２のオレフィン系樹脂微粉末を流動させるため
の液体は水または水と共沸点を有する有機溶剤との混合
液であることが好ましい。
また、封止剤を構成する第２のオレフィン系樹脂微粉末
を流動させるための液体の沸点は封止剤を構成する第２
のオレフィン系樹脂の融点以下であり、しかも封止剤を
構成する第２のオレフィン系樹脂微粉末を流動させる為
の液体の比重が封止剤を構成する第２のオレフィン系樹
脂の比重とほぼ同等であることが好ましい。In order to achieve the above object, the present invention has a first aspect of the present invention, in which a plurality of hollow fiber membranes made of a polymeric material are bundled, and the gaps between the hollow fiber membranes at the bound ends of the hollow fiber membranes are filled with a sealant. In the hollow fiber membrane separation unit sealed by the method, the material of at least the sealing agent of the hollow fiber membrane and the binding end portion is an olefin resin. In the case of this separation unit, it is preferable that the melting point of the second olefin resin constituting the sealant is lower than the melting point of the first olefin resin constituting the hollow fiber membrane. Further, the second invention is a method of bundling a plurality of hollow fiber membranes made of a polymeric material and sealing the gaps between the hollow fiber membranes at the ends of the bundle, in which first a first Adding a liquid for fluidizing the fine powder of the second olefin resin constituting the sealant having a melting point in a lower temperature range than the melting point of the olefin resin to prepare a highly concentrated suspension;
Next, the hollow fiber membranes are tied together, the tied ends are immersed in the high concentration suspension, and the temperature of at least the tied ends of the hollow fiber membranes is equal to or lower than the melting point of the first olefin resin constituting the hollow fiber membranes, The mixture is heated to a temperature higher than the melting point of the second olefin resin constituting the sealing agent, and the liquid mixed to flow the fine powder evaporates at the end of the hollow fiber membrane binding, and the sealing is completed. Manufacture of a hollow fiber membrane separation unit that is assembled by sealing the gaps between the hollow fiber membranes at the ends of the hollow fiber membrane binding by passing through the process of slowly cooling and solidifying the agent fine powder to room temperature after it becomes molten and fluid. It's a method. In this case, the liquid for fluidizing the second olefin resin fine powder constituting the sealant is water or a mixed liquid of an organic solvent that is compatible with water, or The liquid for fluidizing the second olefin resin fine powder is preferably water or a mixed liquid of water and an organic solvent having an azeotropic point. In addition, the boiling point of the liquid for fluidizing the second olefin resin fine powder constituting the sealant is the same as that of the second olefin resin fine powder constituting the sealant.
The specific gravity of the liquid for fluidizing the second olefin resin fine powder constituting the sealant is approximately equal to the specific gravity of the second olefin resin constituting the sealant. Preferably, they are equivalent.
従って１本発明によると、中空糸膜及び中空糸膜結束端
部における中空糸膜相互の隙間を封止する封止剤をいず
れも耐薬品性、耐溶剤性に優れ、がつ汎用で安価なポリ
プロピレン、ポリエチレン等に代表されるオレフィン系
樹脂としたことによって、分離ユニット全体を耐溶剤性
、耐薬品性等に優れた分離ユニットにすることができ、
しかも、中空糸型膜分離ユニットが有していた従来の課
題を解決することが可能となった。
【実施例１
以下に、本発明における中空糸型膜分離ユニット及びそ
の製造方法についての好ましい実施例を詳述する。
実施例１
第１図において、オレフィン系樹脂よりなる複数の中空
糸膜１をＵ字型に結束し、この中空糸膜１の結束端部に
おける中空糸膜１相互の隙間を材質がオレフィン系樹脂
である封止剤２によって封止し、この中空糸膜１を流入
孔５を有する保護外筒３ａと流出孔６を有するキャップ
４ａにより成るハウジング３の内部に収納して中空糸型
膜分離ユニットを構成している。
なお、上記のハウジング３は、その形状や構造等は実施
に応じて任意に設計することができることは勿論であり
、また、その材質は、上記と同様に同一系統のオレフィ
ン系樹脂とすることが好ましい。
ここで、実施例１の製造方法の具体例を第３図Ａ−Ｄに
従って説明する。
■第１図における分離ユニットは、ポリプロピレン製中
空糸膜（最大孔径＝０．１μｍ、内径＝２７０ｐｍ、外
径＝４００μｍ）１を３００本、長さ２００■の束でポ
リプロピレン製ハウジング３内にＵ字型に結束して収納
することにより構成するが、その方法は次の通りである
。
■ポリエチレン微粉末（粒径＝１００〜５００μｍ、メ
ルトインデックス＝８０）１６を、適量ガラス製ビー力
（または金型）１５に入れ、はぼ同容量の精製水（水：
エタノール＝１：１）１７を加え撹拌１８する。
■次に、エチルアルコールを少量づつ添加しながら浮遊
しているポリエチレン微粉末の比重と水−アルコール混
合溶媒の比重がほぼ同じになり微粉末が浮遊状態になる
まで加える。
■ポリエチレン微粉末と混合溶液の比重調整が終わった
ら、更に適量のポリエチレン微粉末を加え粘度調整を行
なう。
■これを封止剤ドープとし、ステンレス製カップ１５ａ
にドープ１９を適量流し込み、中空糸膜１の予め目止め
を施した結束端部を浸漬する。
■この状態を保持しつつ、ポリプロピレンの融点以下で
、かつポリエチレンの融点以上の温度、好ましくは水−
エチルアルコール混合液が突沸しない１１０〜１２０℃
に加温したオーブンに放置する。
■水−アルコールが蒸発後、ポリエチレン微粉末が溶融
流動状態になった時点で、オーブンより取り出して常温
にて徐冷固化させる。
■分離ユニットとして仕上げる為、常法により端面をス
ライスし中空糸膜１の開口端を露出させた。
実施例２
次に、第２図において、高分子材料よりなる複数の直線
状の中空糸膜７の両端を結束し、この中空糸膜７の結束
両端部における中空糸膜７相互の隙間を封止剤８ａ、８
ｂによって封止し、上記した中空糸膜７及びこの中空糸
膜７の結束端部における封止剤８ａ、８ｂの材質をオレ
フィン系樹脂とする。
また、流出孔１４を有する保護外筒９ａと流入孔１２を
有するキャップ１０ａと流出孔１３を有するキャップｌ
ｌａにより成るハウジング９の内部に中空糸膜７を収納
して中空糸型膜分離ユニットを構成している。
なお、上記のハウジング９は、その形状や構造等は実施
に応じて任意に設計することができることは勿論であり
、また、その材質は、上記と同様に同一系統のオレフィ
ン系樹脂とすることが好ましい。
ここで、実施例２の製造方法の具体例を第３図Ａ−Ｄに
従って説明する。
■ポリプロピレン製中空糸膜（最大孔径＝０．１μｍ、
内径＝２７０μｍ、外径＝４００μｍ）７を３００本、
長さ２００■の束をポリプロピレン製のハウジング９内
にほぼ直線状に入れ結束して収納することにより構成す
るが、その方法は次の通りである。
■ポリエチレン微粉末（粒径＝１００〜５００μｍ、メ
ルトインデックス＝８０）１６を適量ガラス製ビー力１
５に入れ、はぼ同容量の精製水１７を加え撹拌１８する
。
■次に、エチルアルコールを少量づつ添加しながら浮遊
しているポリエチレン微粉末の比重と水−アルコール混
合溶媒の比重がほぼ同じになり微粉末が浮遊状態になる
まで加える。
■ポリエチレン微粉末と混合溶液の比重調整が終わった
ら、更に適量のポリエチレン微粉末を加え粘度調整を行
なう。
■これを封止剤ドープとし、ステンレス製カップ１９に
ドープ１５ａを適量流し込み、中空糸膜７の予め目止め
を施した結束端部を浸漬する。
■この状態を保持しつつ、ステンレス製カップ１９をプ
レートヒータに乗せ、６０℃に加温する。
■水−アルコールの混合液が蒸発した後、プレートヒー
タの温度を１２０℃に昇温し、ポリエチレン微粉末が流
動したら約３時間保持し、常温にて冷却放置する。
■中空糸膜７の結束他端８ａ又は８ｂにおける封止は■
〜■の操作を繰返すことによって行なった。
■分離ユニットとして仕上げる為、常法により端面をス
ライスし中空糸膜７の両開口端を露出させた。
「発明の効果」
以上のことから明らかなように、本発明によると、少な
くとも中空糸膜及び中空糸膜結束端部における封止剤を
オレフィン系樹脂とすることにより分離ユニット全体を
耐溶剤性、耐薬品性等に優れているばかりでなく、安価
で小型化を可能とした中空糸型膜分離ユニットを提供す
ることができる。
更には１分離ユニットのハウジングなど全ての接液部材
をオレフィン系樹脂である同一系統の樹脂とする事によ
って、より一層効果的なものとすることができる。Therefore, according to the present invention, both the hollow fiber membrane and the sealing agent for sealing the gap between the hollow fiber membranes at the end of the hollow fiber membrane binding are excellent in chemical resistance and solvent resistance, and are general-purpose and inexpensive. By using olefin resins such as polypropylene and polyethylene, the entire separation unit can be made into a separation unit with excellent solvent resistance, chemical resistance, etc.
Moreover, it has become possible to solve the conventional problems that hollow fiber membrane separation units had. Example 1 A preferred example of the hollow fiber membrane separation unit of the present invention and its manufacturing method will be described in detail below. Example 1 In FIG. 1, a plurality of hollow fiber membranes 1 made of olefin resin are bundled in a U-shape, and the gaps between the hollow fiber membranes 1 at the ends of the bundle are filled with a material made of olefin resin. The hollow fiber membrane 1 is sealed with a sealant 2 of It consists of It should be noted that, of course, the shape and structure of the housing 3 can be arbitrarily designed depending on the implementation, and the material thereof can be made of the same type of olefin resin as above. preferable. Here, a specific example of the manufacturing method of Example 1 will be described with reference to FIGS. 3A to 3D. ■ The separation unit in Fig. 1 consists of a bundle of 300 polypropylene hollow fiber membranes (maximum pore diameter = 0.1 μm, inner diameter = 270 pm, outer diameter = 400 μm) 1 with a length of 200 mm and is housed in a polypropylene housing 3. It is constructed by bundling and storing it in a letter shape, and the method is as follows. ■Put an appropriate amount of polyethylene fine powder (particle size = 100 to 500 μm, melt index = 80) 16 into a glass beer mold (or mold) 15, and add approximately the same amount of purified water (water:
Add 17 ethanol (1:1) and stir 18. (2) Next, ethyl alcohol is added little by little until the specific gravity of the floating polyethylene fine powder and the water-alcohol mixed solvent become almost the same and the fine powder becomes suspended. ■After adjusting the specific gravity of the fine polyethylene powder and mixed solution, add an appropriate amount of fine polyethylene powder to adjust the viscosity. ■Use this as a sealant dope and use the stainless steel cup 15a.
An appropriate amount of dope 19 is poured into the container, and the bundled ends of the hollow fiber membranes 1, which have been sealed in advance, are immersed. ■While maintaining this state, the temperature is lower than the melting point of polypropylene and higher than the melting point of polyethylene, preferably with water.
110-120℃ where ethyl alcohol mixture does not boil
Leave it in a preheated oven. (2) After the water-alcohol has evaporated and the polyethylene fine powder has become molten and fluid, it is taken out of the oven and slowly cooled to solidify at room temperature. (2) To complete the separation unit, the end face was sliced by a conventional method to expose the open end of the hollow fiber membrane 1. Example 2 Next, in FIG. 2, both ends of a plurality of linear hollow fiber membranes 7 made of a polymeric material are tied together, and the gaps between the hollow fiber membranes 7 at both ends of the bundle are sealed. Stopper 8a, 8
The hollow fiber membrane 7 and the sealants 8a and 8b at the bound ends of the hollow fiber membrane 7 are made of olefin resin. Further, a protective outer cylinder 9a having an outflow hole 14, a cap 10a having an inflow hole 12, and a cap l having an outflow hole 13 are also provided.
A hollow fiber membrane separation unit is constructed by housing the hollow fiber membrane 7 inside a housing 9 made of la. Of course, the shape and structure of the housing 9 can be arbitrarily designed depending on the implementation, and the material thereof can be made of the same type of olefin resin as above. preferable. Here, a specific example of the manufacturing method of Example 2 will be described with reference to FIGS. 3A to 3D. ■Polypropylene hollow fiber membrane (maximum pore diameter = 0.1 μm,
300 pieces of 7 (inner diameter = 270 μm, outer diameter = 400 μm),
A bundle having a length of 200 cm is put into a housing 9 made of polypropylene in a substantially straight line, and is bundled and stored in the following manner. ■Appropriate amount of polyethylene fine powder (particle size = 100 to 500 μm, melt index = 80) 16 made of glass beer force 1
5, add approximately the same volume of purified water 17, and stir 18. (2) Next, ethyl alcohol is added little by little until the specific gravity of the floating polyethylene fine powder and the water-alcohol mixed solvent become almost the same and the fine powder becomes suspended. ■After adjusting the specific gravity of the fine polyethylene powder and mixed solution, add an appropriate amount of fine polyethylene powder to adjust the viscosity. (2) This is used as a sealant dope, and an appropriate amount of the dope 15a is poured into a stainless steel cup 19, and the pre-sealed bundled end of the hollow fiber membrane 7 is immersed. (2) While maintaining this state, place the stainless steel cup 19 on a plate heater and heat it to 60°C. (2) After the water-alcohol mixture has evaporated, the temperature of the plate heater is raised to 120°C, and when the fine polyethylene powder flows, it is maintained for about 3 hours, and then left to cool at room temperature. ■Sealing at the other end 8a or 8b of the bundle of hollow fiber membranes 7■
This was done by repeating the operations from ~■. (2) To complete the separation unit, the end face was sliced using a conventional method to expose both open ends of the hollow fiber membrane 7. "Effects of the Invention" As is clear from the above, according to the present invention, by using an olefin resin as the sealant at least at the hollow fiber membrane and the hollow fiber membrane binding end, the entire separation unit has solvent resistance. It is possible to provide a hollow fiber membrane separation unit that not only has excellent chemical resistance, etc., but also is inexpensive and can be miniaturized. Furthermore, by using the same type of olefin resin for all parts in contact with the liquid, such as the housing of one separation unit, it is possible to make the system even more effective.
第１図は本発明における中空糸型膜分離ユニットの一実
施例を示した断面図、第２図は本発明における中空糸型
膜分離ユニットの他の実施例を示した断面図、第３図（
Ａ）〜（Ｄ）は本発明における中空糸型膜分離ユニット
の製造方法を示した説明図である。
１・・・中空糸膜 ２・・・封止剤３・・・ハ
ウジング ７・・・中空糸膜８ａ・・・封止剤
８ｂ・・・封止剤９・・・ハウジング
特許出願人 株式会社北沢バルブ
ニ）FIG. 1 is a sectional view showing one embodiment of the hollow fiber membrane separation unit of the present invention, FIG. 2 is a sectional view of another embodiment of the hollow fiber membrane separation unit of the present invention, and FIG. (
A) to (D) are explanatory diagrams showing a method for manufacturing a hollow fiber membrane separation unit in the present invention. 1...Hollow fiber membrane 2...Sealant 3...Housing 7...Hollow fiber membrane 8a...Sealant
8b...Sealant 9...Housing patent applicant Kitazawa Valbuni Co., Ltd.)
Claims (7)
の中空糸膜の結束端部における中空糸膜相互の隙間を封
止剤によって封止した中空糸型膜分離ユニットにおいて
、上記した中空糸膜及びこの中空糸膜の結束端部におけ
る封止剤の材質をオレフィン系樹脂にしたことを特徴と
する中空糸型膜分離ユニット。(1) In a hollow fiber membrane separation unit in which a plurality of hollow fiber membranes made of a polymeric material are bundled and the gaps between the hollow fiber membranes at the bundled ends of the hollow fiber membranes are sealed with a sealant, the above-mentioned A hollow fiber membrane separation unit characterized in that the material of the hollow fiber membrane and the sealant at the bound end of the hollow fiber membrane is an olefin resin.
点より封止剤を構成する第２のオレフィン系樹脂の融点
が低温域にあることを特徴とする請求項１記載の中空糸
型膜分離ユニット。(2) The hollow fiber type according to claim 1, wherein the melting point of the second olefin resin constituting the sealant is lower than the melting point of the first olefin resin constituting the hollow fiber membrane. Membrane separation unit.
束端部において中空糸膜相互の隙間を封止する方法にお
いて、 ［１］中空糸膜を構成する第１のオレフィン系樹脂の融
点より低温域に融点を有する封止剤を構成する第２のオ
レフィン系樹脂の微粉末に、これを流動させるための液
体を加え高濃度懸濁液を調整する。 ［２］中空糸膜を結束し、結束端部を該高濃度懸濁液に
浸漬する。 ［３］少なくとも中空糸膜結束端部の温度が中空糸膜を
構成する第１のオレフィン系樹脂の融点以下で、かつ封
止剤を構成する第２のオレフィン系樹脂の融点以上の温
度になるよう加熱する。 ［４］中空糸膜結束端部において、微粉末流動の為に混
ぜた液体が蒸発し、かつ封止剤微粉末が溶融流動状態に
なった後、常温まで徐冷固化させる。 以上の工程により中空糸膜結束端部の中空糸膜相互の隙
間を封止して組立てられることを特徴とする中空糸型膜
分離ユニットの製造方法。(3) In a method of bundling a plurality of hollow fiber membranes made of polymeric material and sealing the gaps between the hollow fiber membranes at the ends of the bundle, [1] the first olefin resin constituting the hollow fiber membrane; A highly concentrated suspension is prepared by adding a liquid for fluidizing the fine powder of the second olefin resin constituting the sealant having a melting point in a lower range than the melting point. [2] The hollow fiber membranes are tied together and the tied ends are immersed in the highly concentrated suspension. [3] The temperature at least at the bundled end of the hollow fiber membrane is below the melting point of the first olefin resin constituting the hollow fiber membrane and above the melting point of the second olefin resin constituting the sealant. Heat it up. [4] At the bundled end of the hollow fiber membrane, the liquid mixed to make the fine powder flow evaporates, and after the sealant fine powder becomes melted and fluid, it is slowly cooled to room temperature and solidified. A method for producing a hollow fiber type membrane separation unit, characterized in that the hollow fiber membrane separation unit is assembled by sealing the gaps between the hollow fiber membranes at the ends of the hollow fiber membrane bundle through the above steps.
を流動させる為の液体が水または水と相溶性を有する有
機溶剤との混合液であることを特徴とする請求項３記載
の中空糸型膜分離ユニットの製造方法。(4) The liquid according to claim 3, wherein the liquid for fluidizing the second olefin resin fine powder constituting the sealant is water or a mixed liquid of an organic solvent that is compatible with water. A method for manufacturing a hollow fiber membrane separation unit.
を流動させるための液体が水または水と共沸点を有する
有機溶剤との混合液であることを特徴とする請求項３又
は４記載の中空糸型膜分離ユニットの製造方法。(5) Claim 3 or 4, wherein the liquid for fluidizing the second olefin resin fine powder constituting the sealant is water or a mixed liquid of water and an organic solvent having an azeotropic point. The method for manufacturing the hollow fiber membrane separation unit described above.
を流動させるための液体の沸点が封止剤を構成する第２
のオレフィン系樹脂の融点以下であることを特徴とする
請求項３乃至５記載の中空糸型膜分離ユニットの製造方
法。(6) The boiling point of the liquid for fluidizing the second olefin resin fine powder constituting the sealant is the second constituting the sealant.
6. The method for producing a hollow fiber membrane separation unit according to claim 3, wherein the melting point of the olefin resin is lower than or equal to the melting point of the olefin resin.
を流動させる為の液体の比重が封止剤を構成する第２の
オレフィン系樹脂の比重とほぼ同等であることを特徴と
する請求項３乃至６記載の中空糸型膜分離ユニットの製
造方法。(7) The specific gravity of the liquid for fluidizing the second olefin resin fine powder constituting the sealant is approximately equal to the specific gravity of the second olefin resin constituting the sealant. A method for manufacturing a hollow fiber membrane separation unit according to claims 3 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17186090A JP2939644B2 (en) | 1990-06-29 | 1990-06-29 | Hollow fiber type membrane separation unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17186090A JP2939644B2 (en) | 1990-06-29 | 1990-06-29 | Hollow fiber type membrane separation unit |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13274096A Division JP3174267B2 (en) | 1996-04-30 | 1996-04-30 | Method for manufacturing hollow fiber membrane separation unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0463117A true JPH0463117A (en) | 1992-02-28 |
| JP2939644B2 JP2939644B2 (en) | 1999-08-25 |
Family
ID=15931129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17186090A Expired - Lifetime JP2939644B2 (en) | 1990-06-29 | 1990-06-29 | Hollow fiber type membrane separation unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2939644B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0604972A2 (en) * | 1992-12-31 | 1994-07-06 | Hoechst Celanese Corporation | Hollow fiber membrane fabric - containing cartridges and modules having solvent-resistant thermoplastic tube sheets and methods for making the same |
| EP0659468A1 (en) * | 1993-12-17 | 1995-06-28 | Kitz Corporation | Filter element and method for the production thereof |
| US5584997A (en) * | 1993-09-02 | 1996-12-17 | Tsuchiya Mfg. Co., Ltd. | Separation module and bundle unit of hollow thread-type porous membrane elements and methods of producing same |
| EP0803281A1 (en) * | 1996-04-25 | 1997-10-29 | Kitz Corporation | Filter element |
| JP2007152238A (en) * | 2005-12-06 | 2007-06-21 | Mitsubishi Rayon Eng Co Ltd | Method for manufacturing hollow fiber membrane module |
| JP2010240571A (en) * | 2009-04-06 | 2010-10-28 | Kuraray Co Ltd | Filter unit and gas cleaning system |
-
1990
- 1990-06-29 JP JP17186090A patent/JP2939644B2/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0604972A2 (en) * | 1992-12-31 | 1994-07-06 | Hoechst Celanese Corporation | Hollow fiber membrane fabric - containing cartridges and modules having solvent-resistant thermoplastic tube sheets and methods for making the same |
| EP0604972A3 (en) * | 1992-12-31 | 1994-09-07 | Hoechst Celanese Corp | Hollow fiber membrane fabric - containing cartridges and modules having solvent-resistant thermoplastic tube sheets and methods for making the same. |
| US5584997A (en) * | 1993-09-02 | 1996-12-17 | Tsuchiya Mfg. Co., Ltd. | Separation module and bundle unit of hollow thread-type porous membrane elements and methods of producing same |
| US5885454A (en) * | 1993-09-02 | 1999-03-23 | Tsuchiya Mfg. Co., Ltd. | Separation module and bundle unit of hollow thread-type porous membrane elements and methods of producing same |
| EP0659468A1 (en) * | 1993-12-17 | 1995-06-28 | Kitz Corporation | Filter element and method for the production thereof |
| US5505858A (en) * | 1993-12-17 | 1996-04-09 | Kitz Corporation | Polyolefin filter element and method for the production thereof |
| US5662843A (en) * | 1993-12-17 | 1997-09-02 | Kitz Corporation | Method for the production of polyolefin hollow fiber filter bundles |
| EP0803281A1 (en) * | 1996-04-25 | 1997-10-29 | Kitz Corporation | Filter element |
| JP2007152238A (en) * | 2005-12-06 | 2007-06-21 | Mitsubishi Rayon Eng Co Ltd | Method for manufacturing hollow fiber membrane module |
| JP2010240571A (en) * | 2009-04-06 | 2010-10-28 | Kuraray Co Ltd | Filter unit and gas cleaning system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2939644B2 (en) | 1999-08-25 |
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