JP2009165913A - Separation membrane element, separation membrane module, and manufacturing method of separation membrane element - Google Patents

Separation membrane element, separation membrane module, and manufacturing method of separation membrane element Download PDF

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JP2009165913A
JP2009165913A JP2008004171A JP2008004171A JP2009165913A JP 2009165913 A JP2009165913 A JP 2009165913A JP 2008004171 A JP2008004171 A JP 2008004171A JP 2008004171 A JP2008004171 A JP 2008004171A JP 2009165913 A JP2009165913 A JP 2009165913A
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Prior art keywords
separation membrane
resin
hollow fiber
membrane element
porous separation
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JP2008004171A
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Japanese (ja)
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Hideki Kashiwabara
秀樹 柏原
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Sumitomo Electric Fine Polymer Inc
Sumitomo Electric Industries Ltd
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Sumitomo Electric Fine Polymer Inc
Sumitomo Electric Industries Ltd
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Application filed by Sumitomo Electric Fine Polymer Inc, Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Fine Polymer Inc
Priority to JP2008004171A priority Critical patent/JP2009165913A/en
Priority to TW098100460A priority patent/TWI457169B/en
Priority to EP09700289A priority patent/EP2239043A4/en
Priority to US12/811,913 priority patent/US8709253B2/en
Priority to KR1020137010172A priority patent/KR20130059446A/en
Priority to SG2012087698A priority patent/SG186604A1/en
Priority to CN2012105853073A priority patent/CN103028328A/en
Priority to KR1020107015091A priority patent/KR101275518B1/en
Priority to CN200980101842.3A priority patent/CN101909726B/en
Priority to PCT/JP2009/050219 priority patent/WO2009088075A1/en
Publication of JP2009165913A publication Critical patent/JP2009165913A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a separation membrane element, and a separation membrane module using the separation membrane element having flexibility of root parts of the hollow fiber porous separation membranes, causing little breakage of the root part and leakage of liquid and gas in use, being manufactured by dipping terminal parts of the hollow fiber porous separation membranes in resin liquid, followed by formation of a membrane seal part by hardening the resin, and a manufacturing method of the separation membrane element. <P>SOLUTION: The separation membrane element has the plurality of the hollow fiber porous separation membranes and the membrane seal part bundling the terminal parts. In the separation membrane element, separation membranes using the separation membrane element and manufacturing method of the separation membrane element, the membrane seal part is formed with casting resin, the holes of the hollow fiber porous separation membranes are filled with hole filling resin at a contact part of the hollow fiber porous separation membranes with the membrane seal part, and the casting resin is firmly bonded to the hole filling resin. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

本発明は、中空糸状多孔質分離膜を用いた分離膜エレメント、及びこの分離膜エレメントから構成され、半導体製造や食品工業等の分野で気液吸収、脱気、濾過用等として用いられる分離膜モジュールに関し、並びに、この分離膜エレメントの製造方法に関する。   The present invention relates to a separation membrane element using a hollow fiber-like porous separation membrane, and a separation membrane composed of this separation membrane element and used for gas-liquid absorption, deaeration, filtration, etc. in the fields of semiconductor manufacturing, food industry, etc. The present invention relates to a module and a method for manufacturing the separation membrane element.

半導体製造や食品工業等の分野での、気液吸収、脱気、濾過用等の用途には、中空糸状多孔質分離膜を用いた分離膜エレメントをハウジング内に収容した分離膜モジュールが用いられている。この分離膜エレメントは、中空糸状多孔質分離膜を複数本集束して、その端末を樹脂製の膜封止部により封止して一体化してなるものであり、中空糸状多孔質分離膜としては、多孔質フッ素樹脂からなるものが広く用いられている。   Separation membrane modules in which a separation membrane element using a hollow fiber-like porous separation membrane is housed in a housing are used for gas-liquid absorption, deaeration, filtration, etc. in fields such as semiconductor manufacturing and food industry. ing. This separation membrane element is formed by converging a plurality of hollow fiber-like porous separation membranes and sealing their ends with a resin membrane sealing portion, and as a hollow fiber-like porous separation membrane, Those made of porous fluororesin are widely used.

従来、この分離膜エレメントの製造における中空糸状多孔質分離膜の封止は、中空糸状多孔質分離膜の端末部を金型内にセットした後、金型内に樹脂液（液状の樹脂を言う。以下同じである。）を注型して中空糸状多孔質分離膜の端末部を前記樹脂液に浸漬し、その後、樹脂液の樹脂を硬化させて膜封止部を形成して行われていた。図３はこの注型（浸漬）の様子を示す断面図であり、図中、３５は１本の中空糸状多孔質分離膜を示し、３５’はその中空部を示す。図３（ａ）では金型（図示されていない。）内に注型されている樹脂液３３に、中空糸状多孔質分離膜３５の端末部３２が浸漬されている様子が示されている。   Conventionally, the sealing of the hollow fiber-like porous separation membrane in the production of this separation membrane element is performed by setting a terminal portion of the hollow fiber-like porous separation membrane in the mold and then a resin liquid (referred to as a liquid resin) in the mold. The same shall apply hereinafter) and the end of the hollow fiber-like porous separation membrane is immersed in the resin solution, and then the resin of the resin solution is cured to form a membrane sealing portion. It was. FIG. 3 is a cross-sectional view showing the state of casting (immersion), in which 35 indicates one hollow fiber-like porous separation membrane, and 35 'indicates the hollow portion. FIG. 3A shows a state in which the terminal portion 32 of the hollow fiber-like porous separation membrane 35 is immersed in a resin liquid 33 cast in a mold (not shown).

なお、注型（浸漬）の際には、中空糸の中空部に樹脂が流れ込まないよう、事前に中空糸端末にある中空部の開口部を、封止又は結束等の方法により塞いでおき（以後、開口閉塞部と言う。）、樹脂の硬化後に、この中空糸端末部分を、硬化樹脂（の前記中空糸端末部分の近傍部分）とともに切り落とし、中空部の開口部を端末に露出させる。図３（ａ）中の３４は、この中空糸端末の開口閉塞部を示す。又、図３（ｂ）は、中空糸端末の開口閉塞部３４が、その近傍部分（図３（ａ）中の枠ｍにより囲まれた部分）にある硬化樹脂とともに切り落とされ、中空部３５’の開口部が露出した膜封止部が形成された様子を示す。   In casting (immersion), the opening of the hollow part at the end of the hollow fiber is closed in advance by a method such as sealing or binding so that the resin does not flow into the hollow part of the hollow fiber ( Hereinafter, it is referred to as an opening closing portion.) After the resin is cured, the hollow fiber end portion is cut off together with the cured resin (the vicinity of the hollow fiber end portion) to expose the opening of the hollow portion to the end. Reference numeral 34 in FIG. 3 (a) denotes an opening blocking portion of the hollow fiber terminal. FIG. 3B shows that the opening closing portion 34 of the hollow fiber terminal is cut off together with the cured resin in the vicinity thereof (the portion surrounded by the frame m in FIG. 3A), and the hollow portion 35 ′. A mode that the film | membrane sealing part with which the opening part of this was exposed was formed is shown.

この方法によれば、樹脂液３３が中空糸状多孔質分離膜の端末部３２にある微細な多数の孔内（各孔は図示されていない。）に浸透する。そして、注型された樹脂液３３と多孔内を充填する樹脂液３３を硬化することにより、アンカー効果が発揮され、中空糸状多孔質分離膜を膜封止部に確実に一体化することができる（特許文献１）。   According to this method, the resin liquid 33 permeates into a large number of fine holes (each hole is not shown) in the terminal portion 32 of the hollow fiber porous separation membrane. Then, by curing the cast resin liquid 33 and the resin liquid 33 filling the inside of the pore, the anchor effect is exhibited, and the hollow fiber porous separation membrane can be reliably integrated with the membrane sealing portion. (Patent Document 1).

他方、オールフッ素樹脂製分離膜エレメントでは、膜封止部は、フッ素樹脂で形成されている。このフッ素樹脂は溶融させても極めて高粘度であるため、中空糸状多孔質分離膜をセットした金型に樹脂液として注型できず、従って、オールフッ素樹脂製分離膜エレメントの製造では、前記の方法は採用できない。そこで、膜封止部を形成後、膜封止部に穴をあけ、この穴に中空糸状多孔質分離膜の端末を挿入した後、加熱して膜封止部と中空糸状多孔質分離膜を溶融接着して、一体化する方法が提案されている。
特開平３−１０６４２２号公報 On the other hand, in the all-fluororesin separation membrane element, the membrane sealing portion is formed of a fluororesin. Since this fluororesin has a very high viscosity even when melted, it cannot be cast as a resin liquid in a mold in which a hollow fiber-like porous separation membrane is set. Therefore, in the production of an all-fluororesin separation membrane element, The method cannot be adopted. Therefore, after forming the membrane sealing portion, a hole is made in the membrane sealing portion, and after inserting the end of the hollow fiber porous separation membrane into this hole, the membrane sealing portion and the hollow fiber porous separation membrane are heated. There has been proposed a method of fusion bonding and integration.
JP-A-3-106422

しかしながら、前記の製造方法には次に述べるような問題があった。即ち、図３に示すような方法（中空糸状多孔質分離膜の端末部を樹脂液に浸漬した後、樹脂を硬化させて膜封止部を形成する方法）では、浸漬の際に毛管現象により、樹脂液３３が、中空糸状多孔質分離膜の、樹脂液３３の液面部より上部にある根元部３２ａにまで上昇する。すると、この根元部３２ａに吸収された樹脂液３３の硬化により、根元部３２ａの柔軟性が失われる。   However, the above manufacturing method has the following problems. That is, in the method shown in FIG. 3 (a method of forming a membrane sealing portion by immersing the end portion of the hollow fiber-like porous separation membrane in a resin solution and then curing the resin to form a membrane sealing portion) The resin liquid 33 ascends to the root part 32a located above the liquid surface part of the resin liquid 33 of the hollow fiber porous separation membrane. Then, the flexibility of the root portion 32a is lost due to the hardening of the resin liquid 33 absorbed by the root portion 32a.

分離膜エレメント（分離膜モジュール）の使用時には、処理気液の流量変動や圧力変動等によって中空糸状多孔質分離膜が揺動し中空糸状多孔質分離膜の根元部３２ａに曲げ応力等が作用するが、根元部３２ａの柔軟性が失われると、この曲げ応力等により根元部３２ａが破損して気液の漏れが生じるという問題があった。   When the separation membrane element (separation membrane module) is used, the hollow fiber porous separation membrane is oscillated due to fluctuations in the flow rate or pressure of the processing gas and liquid, and bending stress or the like acts on the root portion 32a of the hollow fiber porous separation membrane. However, when the flexibility of the root portion 32a is lost, there is a problem that the root portion 32a is damaged by the bending stress or the like and gas-liquid leakage occurs.

一方、膜封止部を形成後膜封止部に穴をあけ、この穴に中空糸状多孔質分離膜の端末を挿入し溶融接着させる方法では、分離膜エレメントの製造工程が増え、生産性が低いという問題があり、又、アンカー効果も期待できず、使用時に中空糸状多孔質分離膜が膜封止部から抜けやすくなるという問題があった。   On the other hand, in the method in which a hole is formed in the membrane sealing portion after the membrane sealing portion is formed, and the end of the hollow fiber-like porous separation membrane is inserted into the hole and melt bonded, the manufacturing process of the separation membrane element is increased and the productivity is increased. There is a problem that it is low, an anchor effect cannot be expected, and there is a problem that the hollow fiber-like porous separation membrane is easily detached from the membrane sealing part during use.

本発明は上記の問題に鑑みてなされたものであり、中空糸状多孔質分離膜の端末部を樹脂液に浸漬した後、樹脂を硬化させて膜封止部を形成する方法により製造できるものでありながら、中空糸状多孔質分離膜の根元部が柔軟性を有し、使用中における根元部の破損、気液の漏れが生じにくい分離膜エレメントを提供することを課題とする。本発明は更に、この分離膜エレメントを構成要素とする分離膜モジュール、及びこの分離膜エレメントの製造方法を提供することを課題とする。   The present invention has been made in view of the above problems, and can be manufactured by a method of forming a membrane sealing portion by immersing a terminal portion of a hollow fiber porous separation membrane in a resin liquid and then curing the resin. However, an object of the present invention is to provide a separation membrane element in which the root portion of the hollow fiber-like porous separation membrane has flexibility, and the root portion is not damaged during use and the gas-liquid leakage is unlikely to occur. It is another object of the present invention to provide a separation membrane module including the separation membrane element as a constituent element and a method for manufacturing the separation membrane element.

本発明者は、前記課題を解決するため鋭意検討した結果、中空糸状多孔質分離膜の端末の、膜封止部との接触部分にある孔内のみを、樹脂硬化物により充填することにより、前記の課題を達成できることを見出し、本発明を完成した。   As a result of intensive studies to solve the above problems, the present inventor, by filling only the pores in the contact portion with the membrane sealing portion of the end of the hollow fiber-like porous separation membrane with the resin cured product, The inventors have found that the above-described problems can be achieved and completed the present invention.

即ち、本発明は、請求項１において、
複数の中空糸状多孔質分離膜、及びその端末を集束して封止する膜封止部を有する分離膜エレメントであって、
前記膜封止部が、注型用樹脂により形成され、
前記中空糸状多孔質分離膜の孔が、前記中空糸状多孔質分離膜と前記膜封止部との接触部において、孔充填樹脂により充填され、前記注型用樹脂と前記孔充填樹脂が接着していることを特徴とする分離膜エレメント、を提供する。 That is, the present invention provides a method according to claim 1,
A separation membrane element having a plurality of hollow fiber-like porous separation membranes and a membrane sealing portion for concentrating and sealing the ends thereof,
The film sealing portion is formed of a casting resin,
The pores of the hollow fiber porous separation membrane are filled with pore filling resin at the contact portion between the hollow fiber porous separation membrane and the membrane sealing portion, and the casting resin and the pore filling resin are bonded. A separation membrane element is provided.

本発明の分離膜エレメントは、複数の中空糸状多孔質分離膜及びその端末を集束し封止する膜封止部からなる点等は、半導体製造や食品工業等の分野で、気液吸収、脱気、濾過用等に用いられている従来の分離膜エレメントと同様である。又、中空糸状多孔質分離膜の形状や材質、その本数、膜封止部の形状等も、従来の分離膜分離膜エレメントの場合と同様なものとすることができる。   The separation membrane element of the present invention is composed of a plurality of hollow fiber-like porous separation membranes and a membrane sealing part for concentrating and sealing the ends thereof, in the fields of semiconductor manufacturing and food industry, etc. It is the same as the conventional separation membrane element used for gas and filtration. Further, the shape and material of the hollow fiber-like porous separation membrane, the number thereof, the shape of the membrane sealing portion, and the like can be the same as those of the conventional separation membrane separation membrane element.

ここで中空糸状多孔質分離膜とは、細い管状の多孔質分離膜であり、多孔質分離膜とは、微細な孔、特に膜両表面間を貫通する貫通孔を多数有する膜、特に樹脂製の膜であり、中空糸状多孔質分離膜の管の内側と外側間で、前記貫通孔を通して、濾過や気液の接触、脱気等が行われる。   Here, the hollow fiber-like porous separation membrane is a thin tubular porous separation membrane, and the porous separation membrane is a membrane having a large number of fine pores, particularly a plurality of through holes penetrating between both surfaces of the membrane, particularly made of resin. Filtration, gas-liquid contact, deaeration and the like are performed between the inside and outside of the hollow fiber-like porous separation membrane through the through hole.

膜封止部とは、複数の中空糸状多孔質分離膜の端末を集束して封止する部分であり、通常、中空糸状多孔質分離膜の両方の端末に設けられるが、この膜封止部が樹脂の硬化物により形成されることも従来と同様である。更に、この膜封止部が、次に示す（１）〜（３）の工程を順次行うことにより形成できる点も、従来と同様である。   The membrane sealing part is a part that converges and seals the ends of a plurality of hollow fiber-like porous separation membranes, and is usually provided at both ends of the hollow fiber-like porous separation membrane. It is the same as in the prior art that is formed of a cured resin. Furthermore, the point that this film sealing part can be formed by sequentially performing the following steps (1) to (3) is the same as in the prior art.

（１）中空糸状多孔質分離膜の端末を金型内にセットする。
（２）金型内に樹脂液を注型する。
（３）樹脂液の樹脂を硬化させる。 (1) Set the end of the hollow fiber porous separation membrane in the mold.
(2) The resin liquid is poured into the mold.
(3) The resin of the resin liquid is cured.

なお、樹脂液が中空糸状多孔質分離膜の中空部への浸入することを防ぐため、通常、さらに、（１）の前に、中空糸状多孔質分離膜の端末にある中空部の開口部を、封止又は結束等の方法によりを塞ぐ工程、及び、（３）の後に中空糸端末部分を、硬化樹脂の一部とともに切り落とし、中空部の開口部を端末に露出させる工程が行われる。   In order to prevent the resin liquid from entering the hollow part of the hollow fiber-like porous separation membrane, normally, before (1), the opening of the hollow part at the end of the hollow fiber-like porous separation membrane is further provided. The step of closing by a method such as sealing or bundling, and the step of cutting off the hollow fiber terminal portion together with a part of the cured resin after (3) and exposing the opening of the hollow portion to the terminal are performed.

前記注型用樹脂とは、この樹脂膜封止部を形成する樹脂の硬化物を意味し、注型、硬化による成形が容易な熱硬化性樹脂の硬化物が好ましく用いられる。従って、前記樹脂液としては、硬化前の液状の熱硬化性樹脂が好ましく用いられる。   The casting resin means a cured product of the resin forming the resin film sealing portion, and a cured product of a thermosetting resin that can be easily molded by casting and curing is preferably used. Therefore, as the resin liquid, a liquid thermosetting resin before curing is preferably used.

本発明の分離膜エレメントでは、中空糸状多孔質分離膜の孔が、実質的に、中空糸状多孔質分離膜と膜封止部との接触部のみにおいて、樹脂により充填されていることを特徴とする。孔充填樹脂とは、この孔を充填している樹脂を言う。接触部以外の部分にある孔は、孔充填樹脂により充填されていない。即ち、従来の分離膜エレメントの場合とは異なり、中空糸状多孔質分離膜の根元部（図３における３２ａ等）において、樹脂が含浸されて硬化し柔軟性が失われている部分がほとんどなく、その結果、中空糸状多孔質分離膜の揺動による根元部の破損、気液の漏れが抑制されている。   The separation membrane element of the present invention is characterized in that the pores of the hollow fiber porous separation membrane are substantially filled with a resin only at the contact portion between the hollow fiber porous separation membrane and the membrane sealing portion. To do. The hole filling resin is a resin filling the hole. The holes in the portion other than the contact portion are not filled with the hole filling resin. That is, unlike the case of the conventional separation membrane element, there is almost no portion where the resin is impregnated and cured and the flexibility is lost in the root portion (such as 32a in FIG. 3) of the hollow fiber-like porous separation membrane, As a result, damage to the root portion and gas-liquid leakage due to the swinging of the hollow fiber porous separation membrane are suppressed.

ここで、中空糸状多孔質分離膜の孔とは、中空糸状多孔質分離膜が有する前記貫通孔及び他の微細孔である。又、接触部とは、中空糸状多孔質分離膜の、膜封止部内に埋め込まれている部分（即ち、注型時における注型用樹脂液の液面より下の部分）を意味するが、この埋め込まれている部分のみではなく、その近傍（前記の液面よりわずかに上の部分）も含む意味である。しかし、根元部の破損、気液の漏れをより効果的に防ぐためには、埋め込まれている部分にある孔のみが孔充填樹脂により充填されていることが好ましく、前記近傍の部分は可能な限り小さいことが好ましい。   Here, the holes of the hollow fiber porous separation membrane are the through-holes and other fine holes of the hollow fiber porous separation membrane. Further, the contact portion means a portion of the hollow fiber-like porous separation membrane embedded in the membrane sealing portion (that is, a portion below the liquid surface of the casting resin liquid at the time of casting) This means not only the embedded portion but also its vicinity (portion slightly above the liquid level). However, in order to more effectively prevent breakage of the root portion and leakage of gas and liquid, it is preferable that only the holes in the embedded portion are filled with the hole-filling resin, and the portion in the vicinity thereof is as much as possible. Small is preferable.

又、本発明の分離膜エレメントでは、接触部において、孔充填樹脂と膜封止部を構成する注型用樹脂が強固に接着していることを特徴とする。孔充填樹脂と注型用樹脂が強固に接着（例えば融着）していることにより、中空糸状多孔質分離膜と膜封止部の接着も強固になる。   In the separation membrane element of the present invention, the hole filling resin and the casting resin constituting the membrane sealing portion are firmly bonded at the contact portion. Since the hole-filling resin and the casting resin are firmly bonded (for example, fused), the bonding between the hollow fiber-like porous separation membrane and the membrane sealing portion is also strong.

請求項２に記載の発明は、注型用樹脂及び孔充填樹脂が、熱硬化性樹脂の硬化物であることを特徴とする請求項１に記載の分離膜エレメントである。前記のように、注型用樹脂としては、熱硬化性樹脂の硬化物が好ましく用いられる。又、孔充填樹脂は、分離膜エレメント（分離膜モジュール）の使用環境において固形であり劣化しないものであれば特に限定されるものではないが、熱硬化性樹脂の場合は、中空糸状多孔質分離膜の孔への充填が容易であるので好ましい。即ち、硬化前の樹脂液に、中空糸状多孔質分離膜の端末を浸漬して樹脂液を孔に含浸させ、この後この樹脂液を硬化することにより、容易に充填できるので好ましい。   The invention according to claim 2 is the separation membrane element according to claim 1, wherein the casting resin and the hole-filling resin are a cured product of a thermosetting resin. As described above, a cured product of a thermosetting resin is preferably used as the casting resin. The pore-filling resin is not particularly limited as long as it is solid and does not deteriorate in the usage environment of the separation membrane element (separation membrane module), but in the case of a thermosetting resin, it is a hollow fiber porous separation. This is preferable because the pores of the membrane can be easily filled. That is, it is preferable because the resin liquid before curing can be easily filled by immersing the end of the hollow fiber-like porous separation membrane to impregnate the resin liquid into the pores and then curing the resin liquid.

請求項３に記載の発明は、注型用樹脂と孔充填樹脂が、同種の樹脂であることを特徴とする請求項１又は請求項２に記載の分離膜エレメントである。ここで同種の樹脂とは、例えば、化学組成が同じ又は近似な樹脂を言い、例えば、一方がエポキシ樹脂であれば他方もエポキシ樹脂であり（より好ましくは、一方がビスフェノールＡ型エポキシ樹脂であれば他方もビスフェノールＡ型エポキシ樹脂であるような場合であり）、分子量のみが異なるような関係にある樹脂を言う。注型用樹脂と孔充填樹脂を同種の樹脂とすることにより、中空糸状多孔質分離膜と膜封止部の接着がより強固になり、使用時における中空糸状多孔質分離膜の引抜等が抑制される。   The invention according to claim 3 is the separation membrane element according to claim 1 or 2, wherein the casting resin and the hole-filling resin are the same kind of resin. Here, the same type of resin means, for example, a resin having the same or similar chemical composition. For example, if one is an epoxy resin, the other is an epoxy resin (more preferably, one is a bisphenol A type epoxy resin). For example, the other is a bisphenol A-type epoxy resin), which is a resin having a relationship that only the molecular weight is different. By using the same type of casting resin and pore-filling resin, the adhesion between the hollow fiber porous separation membrane and the membrane sealing part becomes stronger, and pulling out of the hollow fiber porous separation membrane during use is suppressed. Is done.

請求項４に記載の発明は、注型用樹脂の硬度が４０度以上であり、かつ孔充填樹脂の硬度が、注型用樹脂の硬度より小さいことを特徴とする請求項１ないし請求項３のいずれか１項に記載の分離膜エレメントである。膜封止部の耐圧性等の機械的強度を確保し、中空糸状多孔質分離膜の引抜等を低減するためには、注型用樹脂の硬度は高い方が好ましく、中でも注型用樹脂の硬度が４０度以上の場合が好ましい。   The invention according to claim 4 is characterized in that the hardness of the casting resin is 40 degrees or more and the hardness of the hole-filling resin is smaller than the hardness of the casting resin. The separation membrane element according to any one of the above. In order to ensure the mechanical strength such as pressure resistance of the membrane sealing part and reduce the pulling out of the hollow fiber porous separation membrane, it is preferable that the hardness of the casting resin is high. The case where hardness is 40 degree | times or more is preferable.

ここで硬度とは、ＪＩＳ Ｋ７２１５のプラスチックの硬さ試験方法に準拠した方法により測定した値である。   Here, the hardness is a value measured by a method based on a plastic hardness test method of JIS K7215.

一方、中空糸状多孔質分離膜の揺動による根元部の破損、気液の漏れを防ぐためには、孔充填樹脂は柔軟でありその硬度は小さいことが好ましい。特に、注型用樹脂の硬度が４０度以上の場合は、注型用樹脂が硬いことにより、中空糸状多孔質分離膜の揺動に際して裂けが生じやすいので、柔らかい孔充填樹脂によって揺動した際の中空糸状多孔質分離膜の裂けを防ぐことが望まれ、従って、孔充填樹脂の硬度が、注型用樹脂の硬度より小さいことが好ましい。請求項４に記載の発明は、この好ましい態様に該当する。   On the other hand, in order to prevent damage to the root part and gas-liquid leakage due to the swinging of the hollow fiber-like porous separation membrane, the hole-filling resin is preferably flexible and its hardness is small. In particular, when the hardness of the casting resin is 40 degrees or more, since the casting resin is hard, the hollow fiber-like porous separation membrane is easily cracked. Therefore, it is desirable that the hardness of the hole-filling resin is smaller than that of the casting resin. The invention described in claim 4 corresponds to this preferable mode.

請求項５に記載の発明は、注型用樹脂の硬度が４０度未満であり、孔充填樹脂の硬度が、注型用樹脂の硬度と同一又は注型用樹脂の硬度より小さいことを特徴とする請求項１ないし請求項３のいずれか１項に記載の分離膜エレメントである。注型用樹脂の硬度が４０度未満であっても、中空糸状多孔質分離膜の揺動による根元部の破損、気液の漏れを防ぐためには、孔充填樹脂の硬度は、注型用樹脂の硬度と同一又は注型用樹脂の硬度より小さいことが好ましい。   The invention according to claim 5 is characterized in that the hardness of the casting resin is less than 40 degrees, and the hardness of the hole-filling resin is equal to or less than the hardness of the casting resin. The separation membrane element according to any one of claims 1 to 3. Even if the hardness of the casting resin is less than 40 degrees, the hardness of the hole-filling resin is sufficient to prevent damage to the root portion and gas-liquid leakage due to the swinging of the hollow fiber porous separation membrane. It is preferable that the hardness is equal to or less than that of the casting resin.

前記のように、本発明の分離膜エレメントでは、中空糸状多孔質分離膜を形成する材質や、これらの形態等は従来の分離膜エレメントと同様なものが用いられる。例えば、中空糸状多孔質分離膜の材質としては、フッ素樹脂、ポリエチレン、ポリエーテルスルホン等が考えられる。中でも、フッ素樹脂から形成されているものが、耐薬品性、柔軟性、機械的強度等の観点から好ましく用いられる。請求項６は、この好ましい態様に該当する。   As described above, in the separation membrane element of the present invention, the material for forming the hollow fiber-like porous separation membrane, the form thereof and the like are the same as those of the conventional separation membrane element. For example, as a material for the hollow fiber porous separation membrane, fluororesin, polyethylene, polyethersulfone, and the like are conceivable. Among these, those formed from a fluororesin are preferably used from the viewpoints of chemical resistance, flexibility, mechanical strength, and the like. Claim 6 corresponds to this preferable mode.

フッ素樹脂としては、ポリテトラフルオロエチレン（ＰＴＦＥ）、テトラフルオロエチレン／パーフルオロアルキルビニルエーテル共重合体（ＰＦＡ）、テトラフルオロエチレン／ヘキサフルオロプロピレン共重合体（ＦＥＰ）、エチレン／テトラフルオロエチレン共重合体（ＥＴＦＥ）、ポリクロロトリフルオロエチレン（ＰＣＴＦＥ）、エチレン／クロロトリフルオロエチレン共重合体（ＥＣＴＦＥ）、ポリフッ化ビニリデン（ＰＶＤＦ）等の種々のフッ素樹脂を１種あるいは複数種の組み合わせ等により用いることができる。成形加工性に優れ、更に機械的強度にも優れる点よりＰＴＦＥが特に好ましい。   Examples of fluororesins include polytetrafluoroethylene (PTFE), tetrafluoroethylene / perfluoroalkyl vinyl ether copolymer (PFA), tetrafluoroethylene / hexafluoropropylene copolymer (FEP), and ethylene / tetrafluoroethylene copolymer. (ETFE), polychlorotrifluoroethylene (PCTFE), ethylene / chlorotrifluoroethylene copolymer (ECTFE), various fluororesins such as polyvinylidene fluoride (PVDF) are used by one kind or a combination of plural kinds Can do. PTFE is particularly preferable from the viewpoint of excellent molding processability and excellent mechanical strength.

本発明の分離膜エレメントは、
複数の前記中空糸状多孔質分離膜の端末を、熱硬化性樹脂の溶液に含浸し、
その後、含浸された樹脂溶液を乾燥して樹脂含浸部を形成し、
硬化前の液状の熱硬化性樹脂を注型し、
前記熱硬化性樹脂液に、前記で形成された樹脂含浸部を浸漬し、
これらの熱硬化性樹脂を硬化して前記中空糸状多孔質分離膜の端末を封止する方法により製造することができる。 The separation membrane element of the present invention is
Impregnating a plurality of hollow fiber-like porous separation membrane ends with a thermosetting resin solution;
Thereafter, the impregnated resin solution is dried to form a resin impregnated part,
Cast liquid thermosetting resin before curing,
Immerse the resin impregnated part formed above in the thermosetting resin liquid,
These thermosetting resins can be cured by a method of sealing the end of the hollow fiber-like porous separation membrane.

本発明は、前記の分離膜エレメントに加えて、この分離膜エレメントを用いることを特徴とする分離膜モジュールを提供する。すなわち、
請求項１ないし請求項６のいずれか１項に記載の分離膜エレメント及び前記分離膜エレメントを収容するハウジングからなり、前記分離膜エレメントとハウジングが一体化されていることを特徴とする分離膜モジュールである（請求項７）。 The present invention provides a separation membrane module using the separation membrane element in addition to the separation membrane element. That is,
A separation membrane module comprising the separation membrane element according to any one of claims 1 to 6 and a housing accommodating the separation membrane element, wherein the separation membrane element and the housing are integrated. (Claim 7).

本発明の分離膜モジュールについては、分離膜エレメントとこれを収容するハウジングからなる点、分離膜エレメントの膜封止部とハウジングの接着、パッキングシール等により分離膜エレメントとハウジングが一体化されている点、ハウジングの種類やその形態等は、従来の分離膜モジュールと同様なものとすることができる。   About the separation membrane module of this invention, the separation membrane element and the housing are integrated by the point which consists of a separation membrane element and the housing which accommodates this, adhesion | attachment of the membrane sealing part and housing of a separation membrane element, a packing seal, etc. A point, the kind of housing, its form, etc. can be made the same as that of the conventional separation membrane module.

本発明はさらに、請求項８として、前記分離膜エレメントの製造方法を提供する。すなわち、
複数の中空糸状多孔質分離膜、及びその端末を集束して封止する膜封止部からなる分離膜エレメントの製造方法であって、
複数の前記中空糸状多孔質分離膜の端末に、熱硬化性樹脂ｂの溶液を含浸させた後乾燥して、樹脂含浸部を形成する工程、
硬化前の熱硬化性樹脂ａを注型し、かつ注型された熱硬化性樹脂ａに、前記樹脂含浸部を浸漬する工程、及び
熱硬化性樹脂ａ及び熱硬化性樹脂ｂを硬化し、前記中空糸状多孔質分離膜の端末を封止する工程、
を有することを特徴とする分離膜エレメントの製造方法、である。 The present invention further provides, as claim 8, a method for producing the separation membrane element. That is,
A method for producing a separation membrane element comprising a plurality of hollow fiber-like porous separation membranes and a membrane sealing portion for converging and sealing the terminals thereof,
A step of impregnating a terminal of the plurality of hollow fiber-like porous separation membranes with a solution of the thermosetting resin b and then drying to form a resin-impregnated portion;
Casting the thermosetting resin a before curing, and immersing the resin-impregnated portion in the cast thermosetting resin a; curing the thermosetting resin a and the thermosetting resin b; Sealing the end of the hollow fiber-like porous separation membrane,
A method for producing a separation membrane element, comprising:

ここで、熱硬化性樹脂ａとは、膜封止部を形成する熱硬化性樹脂（即ち、硬化後は前記注型用樹脂となる。）の硬化前の樹脂液であり、又熱硬化性樹脂ｂとは、中空糸状多孔質分離膜の膜封止部との接触部にある孔を充填する孔充填樹脂の硬化前の樹脂液である。熱硬化性樹脂ａと熱硬化性樹脂ｂは同一であっても異なっていてもよいが、前記のように同種の樹脂であることが好ましい。熱硬化性樹脂ｂの溶液とは、熱硬化性樹脂ｂを溶剤に溶解したものであり、溶剤としては、熱硬化性樹脂ｂを溶解するものであれば限定されないが、生産性の観点からは、乾燥しやすいものが好ましい。   Here, the thermosetting resin a is a resin liquid before curing of the thermosetting resin forming the film sealing portion (that is, the resin for casting after curing), and thermosetting. The resin b is a resin liquid before curing of the hole-filling resin that fills the holes in the contact portion with the membrane sealing portion of the hollow fiber porous separation membrane. The thermosetting resin a and the thermosetting resin b may be the same or different, but are preferably the same type of resin as described above. The solution of the thermosetting resin b is a solution in which the thermosetting resin b is dissolved in a solvent. The solvent is not limited as long as it dissolves the thermosetting resin b, but from the viewpoint of productivity. Those that are easy to dry are preferred.

この製造方法では、先ず、複数の前記中空糸状多孔質分離膜の端末に、熱硬化性樹脂ｂの溶液を含浸した後、含浸された樹脂溶液を乾燥して樹脂含浸部が形成される。乾燥のときには、樹脂溶液を構成する溶剤を蒸発させるための加熱を行ってもよいが、熱硬化性樹脂ｂを硬化するための加熱はこの段階では行わない。なお、中空部への熱硬化性樹脂ａの浸入を防ぐため、熱硬化性樹脂ａへの浸漬の前に、封止又は結束等の方法による中空部の開口部の閉塞が望まれるが、この封止又は結束等は、熱硬化性樹脂ｂの中空部への樹脂液の浸入を防ぐため、熱硬化性樹脂ｂへの含浸の前に行うことが好ましい。   In this manufacturing method, first, after impregnating the ends of the plurality of hollow fiber-like porous separation membranes with the solution of the thermosetting resin b, the impregnated resin solution is dried to form a resin-impregnated portion. When drying, heating for evaporating the solvent constituting the resin solution may be performed, but heating for curing the thermosetting resin b is not performed at this stage. In order to prevent the thermosetting resin a from entering the hollow portion, it is desirable to close the opening of the hollow portion by a method such as sealing or binding before the immersion in the thermosetting resin a. Sealing or binding is preferably performed before impregnation of the thermosetting resin b in order to prevent the resin liquid from entering the hollow portion of the thermosetting resin b.

次に、前記のようにして形成された樹脂含浸部を有する中空糸状多孔質分離膜の端末を、型（金型等）にセットし、この型に硬化前の熱硬化性樹脂ａを注型することにより、前記樹脂含浸部が熱硬化性樹脂ａに浸漬される。本発明の分離膜エレメントの製造方法においては、この浸漬（注型）の工程において、樹脂含浸部の上縁（中空糸状多孔質分離膜の樹脂含浸部と非含浸部の境界）が、注型された樹脂液の液面と同じ高さ又は該液面よりも僅かに高くなるように、樹脂含浸部の長さを、樹脂含浸部の形成の工程等において調整することができる。   Next, the end of the hollow fiber-like porous separation membrane having the resin-impregnated portion formed as described above is set in a mold (mold or the like), and the thermosetting resin a before curing is cast into this mold. By doing so, the said resin impregnation part is immersed in the thermosetting resin a. In the method of manufacturing a separation membrane element of the present invention, in this dipping (casting) step, the upper edge of the resin impregnated portion (the boundary between the resin impregnated portion and the non-impregnated portion of the hollow fiber-like porous separation membrane) is cast. The length of the resin-impregnated portion can be adjusted in the step of forming the resin-impregnated portion or the like so as to be the same height as or slightly higher than the liquid level of the resin liquid.

注型の工程の段階では、既に中空糸状多孔質分離膜の孔が熱硬化性樹脂ｂにより充填されているので、熱硬化性樹脂ａの中空糸状多孔質分離膜への浸透が妨げられ、図３における根元部３２ａのような熱硬化性樹脂ａが浸透した部分の形成を防ぐことができる。その結果、この部分に吸収された熱硬化性樹脂ａの硬化により根元部の柔軟性が失われて破損、気液の漏れが生じる、との問題を防ぐことができる。なお、熱硬化性樹脂ａの液面からの樹脂含浸部の上縁の位置は、せいぜい５ｍｍ高い位置までとし、好ましくは３ｍｍまでとし、更に好ましくは１ｍｍまでとする。一方低い場合は、中空糸状多孔質分離膜の孔内への熱硬化性樹脂ａの浸透が生じやすくなるので好ましくない。   At the stage of the casting process, since the pores of the hollow fiber porous separation membrane are already filled with the thermosetting resin b, the penetration of the thermosetting resin a into the hollow fiber porous separation membrane is hindered. 3 can be prevented from forming a portion infiltrated with the thermosetting resin a such as the root portion 32a. As a result, it is possible to prevent the problem that the flexibility of the root portion is lost due to the curing of the thermosetting resin a absorbed in this portion, causing damage and leakage of gas and liquid. The position of the upper edge of the resin-impregnated portion from the liquid level of the thermosetting resin a is at most 5 mm higher, preferably up to 3 mm, and more preferably up to 1 mm. On the other hand, if it is low, the thermosetting resin a tends to permeate into the pores of the hollow fiber porous separation membrane, which is not preferable.

注型工程の後、熱硬化性の樹脂ａ及び熱硬化性樹脂ｂが硬化され、前記中空糸状多孔質分離膜の端末が封止され、膜封止部と一体化されて分離膜エレメントが形成される。熱硬化性の樹脂ａ及び熱硬化性樹脂ｂの硬化は、これらを加熱することにより行うことができる。本発明の製造方法では、前記の浸漬工程後、熱硬化性の樹脂ａ及び熱硬化性樹脂ｂを同時に硬化することを特徴とする。同時に硬化することにより、中空糸状多孔質分離膜と膜封止部の間の強固な接着が形成され、使用時における中空糸状多孔質分離膜の引抜等が抑制される。   After the casting step, the thermosetting resin a and the thermosetting resin b are cured, the ends of the hollow fiber-like porous separation membrane are sealed, and integrated with the membrane sealing portion to form a separation membrane element Is done. Curing of the thermosetting resin a and the thermosetting resin b can be performed by heating them. The production method of the present invention is characterized in that the thermosetting resin a and the thermosetting resin b are simultaneously cured after the immersion step. By curing at the same time, a strong adhesion is formed between the hollow fiber-like porous separation membrane and the membrane sealing portion, and pulling-out of the hollow fiber-like porous separation membrane during use is suppressed.

本発明の分離膜エレメント、分離膜モジュールは、中空糸状多孔質分離膜の端末部を樹脂液に浸漬した後、樹脂を硬化させて膜封止部を形成するとの生産性に優れた方法により製造できるものでありながら、中空糸状多孔質分離膜の根元部が柔軟性を有し、分離膜エレメント、分離膜モジュールの使用中における根元部の破損、気液の漏れが生じにくく、又中空糸状多孔質分離膜と膜封止部の間の接着性に優れたものである。又、この優れた特徴を有する分離膜エレメントは、本発明の分離膜エレメントの製造方法により容易に製造することができる。   The separation membrane element and the separation membrane module of the present invention are manufactured by a method with excellent productivity in which the end portion of the hollow fiber-like porous separation membrane is immersed in a resin solution and then the resin is cured to form a membrane sealing portion. Although it is possible, the root part of the hollow fiber-like porous separation membrane has flexibility, and it is difficult to cause damage to the root part and gas-liquid leakage during use of the separation membrane element and separation membrane module. It has excellent adhesion between the quality separation membrane and the membrane sealing part. Further, the separation membrane element having this excellent feature can be easily manufactured by the method for manufacturing a separation membrane element of the present invention.

次に、本発明を実施するための最良の形態について、実施例等を示しながら説明するが、本発明の範囲はこの形態や実施例に限定されるものではなく、本発明の趣旨を損なわない範囲で種々の変更をすることができる。   Next, the best mode for carrying out the present invention will be described with reference to examples and the like, but the scope of the present invention is not limited to these forms and examples and does not impair the spirit of the present invention. Various changes can be made in the range.

図１は、処理液の濾過に用いられる分離膜モジュールＸの断面を模式的に示す断面図である。   FIG. 1 is a cross-sectional view schematically showing a cross section of a separation membrane module X used for filtration of a treatment liquid.

分離膜モジュールＸは、複数のＰＴＦＥ製の中空糸状多孔質分離膜１を互いに間隔を設けて略平行に配置し、その軸線方向の両端末を集束してエポキシ樹脂製の膜封止部２、２’で一体化してなる分離膜エレメント３と、円筒状の筒材４及び該筒材の両端開口を閉じるキャップ５、６を有する耐圧性のハウジング７とを備えている。膜封止部２、２’の外側端面には中空糸状多孔質分離膜１の端末が開口しているが、膜封止部２’の外側端面の開口部はキャップ６により塞がれている。   Separation membrane module X includes a plurality of PTFE hollow fiber-like porous separation membranes 1 arranged substantially parallel to each other at intervals, concentrating both ends in the axial direction, and a membrane sealing portion 2 made of epoxy resin, A separation membrane element 3 integrated at 2 ′, and a pressure-resistant housing 7 having a cylindrical tubular member 4 and caps 5 and 6 for closing openings at both ends of the tubular member are provided. The ends of the hollow fiber-like porous separation membrane 1 are open at the outer end surfaces of the membrane sealing portions 2 and 2 ′, but the opening at the outer end surface of the membrane sealing portion 2 ′ is closed by a cap 6. .

一方のキャップ５には処理液の流入口８及び透過液の排出口９が設けられている。また、キャップ５と分離膜エレメント３の膜封止部２との間には集液室１０が設けられている。なお、膜封止部を形成する材質としては、エポキシ樹脂の他に、ウレタン樹脂等の他の熱硬化性樹脂を挙げることができるが、機械的強度、耐薬品性等の観点、及びコスト面からエポキシ樹脂が好ましい。   One cap 5 is provided with an inlet 8 for processing liquid and an outlet 9 for permeate. A liquid collection chamber 10 is provided between the cap 5 and the membrane sealing part 2 of the separation membrane element 3. In addition to the epoxy resin, other thermosetting resins such as a urethane resin can be cited as the material for forming the film sealing portion. However, in terms of mechanical strength, chemical resistance, etc., and cost To epoxy resins are preferred.

このように構成される分離膜モジュールＸにおいて、処理液は、矢印イで示すようにキャップ５の流入口８から分離膜モジュールＸの内側に導入され、中空糸状多孔質分離膜１を透過してその貫通孔により濾過が行われる。透過液は、各中空糸状多孔質分離膜１の管内を通って集液室１０に集液され、矢印ロで示すように排出口９から分離膜モジュールＸの外側に排出される。   In the separation membrane module X configured as described above, the treatment liquid is introduced into the separation membrane module X from the inlet 8 of the cap 5 as shown by an arrow A, and passes through the hollow fiber porous separation membrane 1. Filtration is performed by the through hole. The permeated liquid passes through the inside of each hollow fiber-like porous separation membrane 1 and is collected in the liquid collection chamber 10 and is discharged from the discharge port 9 to the outside of the separation membrane module X as indicated by an arrow b.

次に、分離膜エレメント３の製造方法を図２に基づいて説明する。図２は、この製造方法の各工程を示す断面図であり、分離膜エレメント３を構成する複数の中空糸状多孔質分離膜１の中の１本について、その端末部分を拡大して示す。   Next, the manufacturing method of the separation membrane element 3 is demonstrated based on FIG. FIG. 2 is a cross-sectional view showing each step of the manufacturing method, and shows an enlarged terminal portion of one of the plurality of hollow fiber-like porous separation membranes 1 constituting the separation membrane element 3.

まず、図２（ａ）に示すように、中空糸状多孔質分離膜１の端末を、エポキシ樹脂を溶剤に溶解してなる熱硬化性樹脂ｂ１２中に浸漬する。このとき中空糸状多孔質分離膜１の中空部１’内に、熱硬化性樹脂ｂ１２（及び後述する熱硬化性樹脂ａ）が浸入しないように、予め、中空部１’の開口部を封止して、開口閉塞部１１を形成しておく。   First, as shown to Fig.2 (a), the terminal of the hollow fiber-like porous separation membrane 1 is immersed in the thermosetting resin b12 formed by melt | dissolving an epoxy resin in a solvent. At this time, the opening of the hollow portion 1 ′ is sealed in advance so that the thermosetting resin b 12 (and the thermosetting resin a described later) does not enter the hollow portion 1 ′ of the hollow fiber porous separation membrane 1. Thus, the opening closing part 11 is formed.

この浸漬により、中空糸状多孔質分離膜１の有する多数の孔内（各孔は図示されていない。）に熱硬化性樹脂ｂ１２が浸透する。この浸透した部分を浸透部１３’とするが、毛管現象により、浸透部１３’は、図２（ａ）に示すように実際に浸漬された部分より通常は大きくなる。熱硬化性樹脂ｂとしては、エポキシ樹脂の他にウレタン樹脂等の熱硬化性樹脂が用いられるが、前記のように硬化後も柔軟性を有する樹脂が好ましい。又熱硬化性樹脂ｂを構成する溶剤としては、メチルエチルケトン、イソプロピルアルコール等を挙げることができる。   By this immersion, the thermosetting resin b12 permeates into a large number of holes (each hole is not shown) of the hollow fiber porous separation membrane 1. This infiltrated portion is referred to as an infiltrating portion 13 '. Due to capillary action, the infiltrating portion 13' is usually larger than the actually immersed portion as shown in FIG. As the thermosetting resin b, a thermosetting resin such as a urethane resin is used in addition to the epoxy resin, but a resin having flexibility even after curing as described above is preferable. Examples of the solvent constituting the thermosetting resin b include methyl ethyl ketone and isopropyl alcohol.

その後、中空糸状多孔質分離膜１を引き上げて、浸透部１３’にある熱硬化性樹脂ｂ１２を乾燥させて中空糸状多孔質分離膜１の端末に樹脂含浸部１３を形成する（図２（ｂ））。次に、複数の中空糸状多孔質分離膜１を集束した状態で、樹脂含浸部１３を下に向けて下側に位置する金型（図示は省略されている。）内にセットする。   Thereafter, the hollow fiber-like porous separation membrane 1 is pulled up, and the thermosetting resin b12 in the permeation portion 13 ′ is dried to form the resin-impregnated portion 13 at the end of the hollow fiber-like porous separation membrane 1 (FIG. 2B). )). Next, in a state where the plurality of hollow fiber-like porous separation membranes 1 are converged, the resin impregnated portion 13 is set downward and placed in a lower mold (not shown).

その後、熱硬化性樹脂ａ（以後封止用樹脂液１４という。）を金型内に注入して中空糸状多孔質分離膜１の束の周囲部及び中空糸状多孔質分離膜１の隙間に行き渡らせ、中空糸状多孔質分離膜１の端末を封止用樹脂液１４に浸漬する（図２（ｃ））。封止用樹脂液１４は、膜封止部を形成するための樹脂液であるので、前記のように、硬化前のエポキシ樹脂液、ウレタン樹脂液等が用いられる。   Thereafter, thermosetting resin a (hereinafter referred to as sealing resin liquid 14) is injected into the mold and spreads around the bundle of hollow fiber-like porous separation membrane 1 and the gap between hollow fiber-like porous separation membrane 1. Then, the end of the hollow fiber-like porous separation membrane 1 is immersed in the sealing resin liquid 14 (FIG. 2C). Since the sealing resin liquid 14 is a resin liquid for forming the film sealing portion, as described above, an epoxy resin liquid, a urethane resin liquid or the like before curing is used.

図２（ｃ）に示すように、封止用樹脂液１４を金型内に注入するときは、樹脂含浸部１３の上縁の位置を、注入完了後の封止用樹脂液１４の液面と同じ高さ又は該液面よりも僅かに高くなるように設定する。この状態で樹脂含浸部１３を封止用樹脂液１４中に浸漬する。中空糸状多孔質分離膜１の孔にはすでに熱硬化性樹脂ｂ１２が浸透しているので、中空糸状多孔質分離膜１の根元部の孔内に、封止用樹脂液１４が毛管現象により浸透することはなく、熱硬化性樹脂ａの根元部への浸透、硬化により根元部の破損、気液の漏れを生じやすくなるとの問題を抑制することができる。   As shown in FIG. 2C, when the sealing resin liquid 14 is injected into the mold, the position of the upper edge of the resin-impregnated portion 13 is defined as the liquid level of the sealing resin liquid 14 after the completion of the injection. It is set to be the same height as or slightly higher than the liquid level. In this state, the resin impregnated portion 13 is immersed in the sealing resin liquid 14. Since the thermosetting resin b12 has already permeated into the pores of the hollow fiber-like porous separation membrane 1, the sealing resin liquid 14 penetrates into the pores at the root of the hollow fiber-like porous separation membrane 1 by capillary action. However, it is possible to suppress the problem that the root portion is easily broken and the gas-liquid leaks easily due to penetration and curing of the thermosetting resin a.

前記の浸漬の後、加熱により、樹脂含浸部１３にある熱硬化性樹脂ｂと、金型内に注型されている熱硬化性樹脂ａ（封止用樹脂液１４）の硬化がされる。この硬化により両樹脂の界面が接着され、中空糸状多孔質分離膜１と膜封止部２が一体化する。次に、脱型を行い、開口閉塞部１１を含む中空糸状多孔質分離膜１の端末及びその近傍の膜封止部２（図２（ｄ）中のｍ’部分）を切り取ることにより（図２（ｄ））中空糸状多孔質分離膜１の中空部１’が膜封止部２の端面から開口する（図２（ｅ））。このようにして、膜封止部２と中空糸状多孔質分離膜１とが一体化し、かつ、中空糸状多孔質分離膜１の根元部１ａの柔軟性が確保された分離膜エレメント３が作製され、これをハウジング７内に収容することにより、本発明の分離膜モジュールＸを得ることができる。   After the immersion, the thermosetting resin b in the resin-impregnated portion 13 and the thermosetting resin a (sealing resin liquid 14) cast in the mold are cured by heating. The interface between the two resins is bonded by this curing, and the hollow fiber porous separation membrane 1 and the membrane sealing portion 2 are integrated. Next, demolding is performed, and the end of the hollow fiber-like porous separation membrane 1 including the opening blocking portion 11 and the membrane sealing portion 2 (m ′ portion in FIG. 2D) in the vicinity thereof are cut out (FIG. 2). 2 (d)) The hollow portion 1 ′ of the hollow fiber-like porous separation membrane 1 opens from the end face of the membrane sealing portion 2 (FIG. 2 (e)). In this way, the separation membrane element 3 in which the membrane sealing portion 2 and the hollow fiber-like porous separation membrane 1 are integrated and the flexibility of the root portion 1a of the hollow fiber-like porous separation membrane 1 is secured is produced. By accommodating this in the housing 7, the separation membrane module X of the present invention can be obtained.

図４は、本発明の分離膜モジュールの他の実施形態である分離膜モジュールＹの断面図を示す。分離膜モジュールＹは、オゾン溶解等の気液吸収に用いられる分離膜モジュールである。   FIG. 4 shows a cross-sectional view of a separation membrane module Y which is another embodiment of the separation membrane module of the present invention. The separation membrane module Y is a separation membrane module used for gas-liquid absorption such as ozone dissolution.

分離膜モジュールＹも分離膜モジュールＸと同様に、複数のＰＴＦＥ製の中空糸状多孔質分離膜２１を互いに間隔を設けて略平行に配置し、その軸線方向の両端末を集束してエポキシ樹脂製の膜封止部２２、２２’で一体化してなる分離膜エレメント２３と、円筒状の筒材２４及び該筒材の両端開口を閉じるキャップ２５、２６を有する耐圧性のハウジング２７とを備えている。膜封止部２２、２２’の外側端面には中空糸状多孔質分離膜２１の端末が開口し、中空糸状多孔質分離膜２１の一端開口から他端開口への処理液の流通を可能としている。一方のキャップ２６には気体の流入口２８及び処理液の排出口２９が設けられ、他方のキャップ２５には気体の排出口３０及び処理液の流入口３１が設けられている。   Similarly to the separation membrane module X, the separation membrane module Y is also made of a plurality of PTFE hollow fiber-like porous separation membranes 21 which are arranged substantially parallel to each other at intervals and converged at both ends in the axial direction. And a pressure-resistant housing 27 having a cylindrical tubular member 24 and caps 25 and 26 that close both end openings of the tubular member. Yes. The ends of the hollow fiber porous separation membrane 21 are opened at the outer end faces of the membrane sealing portions 22 and 22 ′, and the treatment liquid can be distributed from one end opening to the other end opening of the hollow fiber porous separation membrane 21. . One cap 26 is provided with a gas inlet 28 and a processing liquid outlet 29, and the other cap 25 is provided with a gas outlet 30 and a processing liquid inlet 31.

処理液は、流入口３１から中空糸状多孔質分離膜２１の管内に導入され、中空糸状多孔質分離膜２１の内側に接触しながら流れて排出口２９から分離膜モジュールＹの外側に排出される。気体は、流入口２８から分離膜モジュールＹのハウジング２７内に導入され、中空糸状多孔質分離膜２１の外側に接触しながら流れて排出口３０から分離膜モジュールＹの外側に排出される。この間に、中空糸状多孔質分離膜２１の貫通孔を通して、気液吸収が行われる。   The treatment liquid is introduced into the pipe of the hollow fiber-like porous separation membrane 21 from the inlet 31, flows while contacting the inside of the hollow fiber-like porous separation membrane 21, and is discharged from the outlet 29 to the outside of the separation membrane module Y. . The gas is introduced from the inlet 28 into the housing 27 of the separation membrane module Y, flows while contacting the outside of the hollow fiber porous separation membrane 21, and is discharged from the outlet 30 to the outside of the separation membrane module Y. During this time, gas-liquid absorption is performed through the through-holes of the hollow fiber-like porous separation membrane 21.

なお、分離膜モジュールＹの製造方法は、分離膜モジュールＸと同様なのでその説明は省略する。又、分離膜モジュールＸ、Ｙの流入口及び排出口の配置場所などについては処理気液や処理内容などにより適宜設計変更されるものである。   The manufacturing method of the separation membrane module Y is the same as that of the separation membrane module X, and the description thereof is omitted. In addition, the arrangement positions of the inlets and outlets of the separation membrane modules X and Y are appropriately changed depending on the processing gas / liquid, processing contents, and the like.

［熱硬化性樹脂ａ（以後、封止用樹脂とする）の準備］
表１に示す組成で、主剤及び硬化剤を混合して封止用樹脂Ａ、Ｂ、Ｃ及びＤのそれぞれを得た。なお、表１中の数字（硬度以外）は、組成割合（重量部）を示す。 [Preparation of thermosetting resin a (hereinafter referred to as sealing resin)]
With the composition shown in Table 1, the main agent and the curing agent were mixed to obtain sealing resins A, B, C and D, respectively. The numbers in Table 1 (other than hardness) indicate the composition ratio (parts by weight).

［熱硬化性樹脂ｂ（以後、含浸用樹脂とする）の準備］
表２に示す組成で、主剤及び硬化剤を混合して含浸用樹脂Ｉ、II、IIIのそれぞれを得た。なお、表２中の数字（硬度以外）は、組成割合（重量部）を示す。 [Preparation of thermosetting resin b (hereinafter referred to as impregnation resin)]
With the composition shown in Table 2, the base resin and the curing agent were mixed to obtain impregnation resins I, II, and III, respectively. The numbers in Table 2 (other than hardness) indicate the composition ratio (parts by weight).

［含浸用樹脂の硬化物及び封止用樹脂の硬化物の硬度の測定］
前記のようにして調整された含浸用樹脂及び封止用樹脂（液状）を、金型に注型し、１００℃で４時間加熱して３０ｍｍ角、厚さ１０ｍｍの大きさの評価用ブロックを作製し、各評価用ブロックを、デュロメーターＤ型（テクロック社製）により、ＪＩＳ Ｋ ７２１５プラスチック硬さ試験方法に準拠して、２５℃環境下で硬度測定を行った。その測定値も表１、２に示す。 [Measurement of hardness of cured resin of impregnation resin and cured resin of sealing resin]
The impregnating resin and the sealing resin (liquid) prepared as described above are poured into a mold and heated at 100 ° C. for 4 hours to form a 30 mm square, 10 mm thick evaluation block. Each block for evaluation was measured for hardness in a 25 ° C. environment using a durometer D type (manufactured by Teclock Co., Ltd.) in accordance with a JIS K 7215 plastic hardness test method. The measured values are also shown in Tables 1 and 2.

Figure 2009165913
Figure 2009165913

Figure 2009165913
Figure 2009165913

なお、上記表１及び表２において使用した略号の意味を、それぞれ以下に示す。
ビスＡ ： ビスフェノールＡ型エポキシ樹脂（大日本インキ社製エピクロン８５０）
ビスＦ ： ビスフェノールＦ型エポキシ樹脂（大日本インキ社製エピクロン８３０）
ＰＰＧ ： ポリプロピレングリコールジグリシジルエーテル型エポキシ樹脂
（東都化成社製ＰＧ−２０１Ｎ）
芳香族 ： 芳香族ポリアミン（ＰＴＩ社製アンカミンＺ）
脂肪族Ｄ： 脂肪族ポリアミン（ＰＴＩ社製ジェファーミンＤ−４００）ジアミン
脂肪族Ｔ： 脂肪族ポリアミン（ＰＴＩ社製ジェファーミンＴ−４０３）トリアミン In addition, the meaning of the symbol used in the said Table 1 and Table 2 is shown below, respectively.
Bis A: Bisphenol A type epoxy resin (Epicron 850, manufactured by Dainippon Ink Co., Ltd.)
Bis F: Bisphenol F type epoxy resin (Epicron 830, manufactured by Dainippon Ink & Chemicals)
PPG: Polypropylene glycol diglycidyl ether type epoxy resin
(PG-201N manufactured by Toto Kasei)
Aromatic: Aromatic polyamine (PTI Ancamine Z)
Aliphatic D: Aliphatic polyamine (Jefamine D-400 manufactured by PTI) Aliphatic T: Aliphatic polyamine (Jefamine T-403 manufactured by PTI) Triamine

［分離膜エレメント３の作製］
分離膜エレメント３を、図２に示された製造方法に基づいて作製した。なお以下の説明において、各部材については図２と同じ番号を用いている。 [Preparation of separation membrane element 3]
The separation membrane element 3 was produced based on the manufacturing method shown in FIG. In the following description, the same numbers as those in FIG. 2 are used for the respective members.

（１）中空糸状多孔質分離膜１の準備
外形２．３ｍｍ、内径１．１ｍｍ、孔径２μｍのＰＴＦＥ製中空糸状多孔質分離膜１（住友電気工業社製ポアフロンチューブ）を１０本準備した。
（２）熱硬化性樹脂ｂ（含浸用樹脂液）の準備
表２に記載した含浸用樹脂のそれぞれ１０ｇを、メチルエチルケトン１００ｇに溶解して熱硬化性樹脂ｂ１２を作製した。
（３）中空糸状多孔質分離膜１の樹脂含浸部１３の形成
中空糸状多孔質分離膜１の一端末を結束して封止した後、熱硬化性樹脂ｂ１２に１０分間浸漬し、中空糸状多孔質分離膜１の孔内に十分に浸透させた。中空糸状多孔質分離膜１を熱硬化性樹脂ｂ１２から引き上げ、室温で乾燥させてメチルエチルケトンを揮散させて樹脂含浸部１３を形成した。中空糸状多孔質分離膜１の他端末も同じ処理によって樹脂含浸部１３を形成した。 (1) Preparation of hollow fiber porous separation membrane 1 Ten PTFE hollow fiber porous separation membranes 1 (poreflon tubes manufactured by Sumitomo Electric Industries, Ltd.) having an outer diameter of 2.3 mm, an inner diameter of 1.1 mm, and a pore diameter of 2 μm were prepared.
(2) Preparation of thermosetting resin b (impregnating resin solution) 10 g of each of the impregnating resins described in Table 2 was dissolved in 100 g of methyl ethyl ketone to prepare thermosetting resin b12.
(3) Formation of the resin-impregnated portion 13 of the hollow fiber-like porous separation membrane 1 After binding and sealing one end of the hollow fiber-like porous separation membrane 1, it is immersed in the thermosetting resin b12 for 10 minutes to form a hollow fiber-like porous The pores of the mass separation membrane 1 were sufficiently permeated. The hollow fiber-like porous separation membrane 1 was pulled up from the thermosetting resin b12 and dried at room temperature to volatilize methyl ethyl ketone to form the resin impregnated portion 13. The resin impregnated portion 13 was also formed at the other end of the hollow fiber-like porous separation membrane 1 by the same treatment.

（４）封止用樹脂（熱硬化性樹脂ａ）液の注型
前記のようにして得られた１０本の中空糸状多孔質分離膜１を、間隔をあけた状態で集束し、樹脂含浸部１３を下に向けて金型内にセットした。表１に記載した封止用樹脂の液（封止用樹脂液１４）を、４０℃に加熱して粘度を下げ、中空糸状多孔質分離膜１の樹脂含浸部１３がセットされた金型内に注入し、中空糸状多孔質分離膜１の束の周囲部及び中空糸状多孔質分離膜１の隙間に行き渡らせた。その際、樹脂含浸部１３の上縁が、注入完了後の封止用樹脂液１４の液面から１ｍｍ以内の高さに位置するようにして樹脂含浸部１３を封止用樹脂液１４中に浸漬した。
（５）中空糸状多孔質分離膜１の端末の封止
その後、１００℃で４時間加熱して、金型内の樹脂含浸部１３の含浸用樹脂と封止用樹脂液１４を同時に硬化させて両樹脂の界面を接着させた。
（６）硬化後脱型し、さらにその後、図２（ｄ）（ｅ）に示すように、中空糸状多孔質分離膜１の端末近傍にある膜封止部２を、前記端末部とともに切り落として中空糸状多孔質分離膜１の中空部を開口させ、中空糸状多孔質分離膜１の両端末と樹脂製膜封止部２とが一体構造となった分離膜エレメント３を作製した。 (4) Casting of sealing resin (thermosetting resin a) liquid Ten hollow fiber-like porous separation membranes 1 obtained as described above are converged at intervals, and resin impregnated portions 13 was set in the mold facing down. The sealing resin liquid (sealing resin liquid 14) described in Table 1 is heated to 40 ° C. to lower the viscosity, and inside the mold in which the resin impregnated portion 13 of the hollow fiber porous separation membrane 1 is set And was distributed to the periphery of the bundle of hollow fiber-like porous separation membranes 1 and the gaps between the hollow fiber-like porous separation membranes 1. At that time, the resin-impregnated part 13 is placed in the sealing resin liquid 14 so that the upper edge of the resin-impregnated part 13 is positioned at a height within 1 mm from the liquid surface of the sealing resin liquid 14 after the completion of injection. Soaked.
(5) Sealing the end of the hollow fiber-like porous separation membrane 1 Then, the resin for impregnation of the resin impregnating part 13 in the mold and the resin solution for sealing 14 are simultaneously cured by heating at 100 ° C. for 4 hours. The interface between both resins was adhered.
(6) Demold after curing, and then cut off the membrane sealing portion 2 near the end of the hollow fiber-like porous separation membrane 1 together with the end portion as shown in FIGS. A hollow part of the hollow fiber-like porous separation membrane 1 was opened, and a separation membrane element 3 in which both ends of the hollow fiber-like porous separation membrane 1 and the resin membrane sealing part 2 were integrated was produced.

［耐薬品性評価］
次の（ｉ）から（ｖ）までの各薬品液に、このようにして製造した分離膜エレメント３を１０００時間、浸漬した状態で、膜封止部２をエアーバブリングで曝気し、中空糸状多孔質分離膜１を、根元部分を中心とした角度２〜５度の範囲で少なくとも１分間に３回以上振動させた。
（ｉ）４％硫酸水溶液、（ii）４％水酸化ナトリウム水溶液、（iii）有効塩素３０００ｐｐｍ相当の次亜塩素酸ナトリウム水溶液、（iv）イソプロピルアルコール、（ｖ）メチルエチルケトン [Chemical resistance evaluation]
The membrane sealing part 2 was aerated by air bubbling with the separation membrane element 3 thus manufactured immersed in the chemical solutions (i) to (v) for 1000 hours to form a hollow fiber-like porous material. The mass separation membrane 1 was vibrated at least 3 times per minute within an angle range of 2 to 5 degrees with the root portion as the center.
(I) 4% sulfuric acid aqueous solution, (ii) 4% sodium hydroxide aqueous solution, (iii) sodium hypochlorite aqueous solution equivalent to 3000 ppm of effective chlorine, (iv) isopropyl alcohol, (v) methyl ethyl ketone

その後、以下に示す水中でのエアー漏れ試験を行い、中空糸状多孔質分離膜１の根元部での漏れの発生を測定し、根元部の破損や気液の漏れの生じにくさを評価した。又以下に示す引抜試験を行い、その結果に基づき膜封止部２と中空糸状多孔質分離膜１の接着性を評価した。その結果を表３に示す。   Thereafter, an air leakage test in water as described below was performed to measure the occurrence of leakage at the root portion of the hollow fiber-like porous separation membrane 1 and to evaluate the difficulty of damage to the root portion and gas-liquid leakage. In addition, the pull-out test shown below was performed, and the adhesion between the membrane sealing portion 2 and the hollow fiber-like porous separation membrane 1 was evaluated based on the results. The results are shown in Table 3.

［水中でのエアー漏れ試験］
前記で製造された分離膜エレメント３の一端に図１の６で示すようなキャップをはめて、中空糸状多孔質分離膜１の開口部を塞ぎ、他方の端には、図１の５で示すようなキャップをはめ、キャップ５の排出口には空気吹き込み管を装着する。その後、この分離膜エレメント３を水中に漬けて、空気吹き込み管から空気を圧入し、中空糸状多孔質分離膜１の根元部から空気（泡）がリークする圧力を測定し、以下の基準で評価した。 [Air leak test in water]
A cap as shown by 6 in FIG. 1 is put on one end of the separation membrane element 3 manufactured as described above to close the opening of the hollow fiber-like porous separation membrane 1, and the other end is shown by 5 in FIG. Such a cap is put on, and an air blowing tube is attached to the outlet of the cap 5. Thereafter, the separation membrane element 3 is immersed in water, air is injected from an air blowing tube, and the pressure at which air (bubbles) leaks from the root of the hollow fiber-like porous separation membrane 1 is measured and evaluated according to the following criteria: did.

◎ リークする圧力が５０ｋＰａ以上
○ リークする圧力が２０〜５０ｋＰａ
× リークする圧力が２０ｋＰａ未満 ◎ Leakage pressure is 50 kPa or more ○ Leakage pressure is 20-50 kPa
× Leak pressure is less than 20 kPa

［引抜試験］
前記で製造された分離膜エレメント３の中空糸状多孔質分離膜１の１本をインストロンのチャックに挟んで膜封止部２よりの引抜きを行い、引抜きが発生するときの引抜き力を測定した。 [Pullout test]
One of the hollow fiber-like porous separation membranes 1 of the separation membrane element 3 manufactured above was sandwiched between Instron's chucks and pulled out from the membrane sealing part 2 to measure the pulling force when pulling occurred. .

比較例
比較として、前記分離膜エレメント３の作製における工程（２）及び（３）を行わなかった以外は同様にして、中空糸状多孔質分離膜１の両端末と樹脂製膜封止部２とが一体構造となった分離膜エレメント３を作製し、同様にして耐薬品性評価を行った。その結果も表３に示す。 Comparative Example As a comparison, except that steps (2) and (3) in the production of the separation membrane element 3 were not performed, both ends of the hollow fiber porous separation membrane 1 and the resin membrane sealing portion 2 Was made into an integral structure, and the chemical resistance was evaluated in the same manner. The results are also shown in Table 3.

Figure 2009165913
Figure 2009165913

比較例は硬度８５度の封止用樹脂を用いたが、すべての水漏れ試験で水漏れが発生し、引抜試験でも、８０Ｎをかけた時点で中空糸膜が破断（分離膜切れ）が発生した。一方、実施例１〜５では、水漏れ試験、引抜試験とも良好な結果が得られており、分離膜モジュール使用中における根元部の破損、気液の漏れが生じにくく、又中空糸状多孔質分離膜と膜封止部の間の接着性に優れたものであることが示されている。   In the comparative example, a sealing resin with a hardness of 85 degrees was used. However, water leakage occurred in all water leakage tests, and in the pull-out test, the hollow fiber membrane was broken when 80 N was applied (separation membrane was broken). did. On the other hand, in Examples 1 to 5, good results were obtained in both the water leak test and the pull-out test, and the root part was not damaged and the gas-liquid leak was difficult to occur during the use of the separation membrane module. It is shown that the film has excellent adhesion between the film and the film sealing portion.

本発明の分離膜モジュールの一例の概略断面図である。It is a schematic sectional drawing of an example of the separation membrane module of this invention. 分離膜エレメントの製造工程を示す概略図である。It is the schematic which shows the manufacturing process of a separation membrane element. 従来の分離膜エレメントの製造方法を示す概略図である。It is the schematic which shows the manufacturing method of the conventional separation membrane element. 本発明の分離膜モジュールの他の一例の概略断面図である。It is a schematic sectional drawing of other examples of the separation membrane module of this invention.

符号の説明Explanation of symbols

Ｘ、Ｙ 分離膜モジュール
１、２１、３５ 中空糸状多孔質分離膜
１’、３５’ 中空部
１ａ、３２ａ 根元部
２、２’、２２、２２’ 膜封止部
３、２３ 分離膜エレメント
４、２４ 筒材
５、６、２５、２６ キャップ
１０ 集液室
７、２７ ハウジング
８、２８、３１ 流入口
９、２９、３０ 排出口
１１、３４ 開口閉塞部
１２ 熱硬化性樹脂ｂ
１３ 樹脂含浸部
１３’ 浸透部
１４ 封止用樹脂液
３２ 端末部
３３ 樹脂液 X, Y Separation membrane module 1, 21, 35 Hollow fiber-like porous separation membrane 1 ', 35' Hollow portion 1a, 32a Base portion 2, 2 ', 22, 22' Membrane sealing portion 3, 23 Separation membrane element 4, 24 Cylinder 5, 6, 25, 26 Cap 10 Liquid collection chamber 7, 27 Housing 8, 28, 31 Inlet 9, 29, 30 Discharge port 11, 34 Opening block 12 Thermosetting resin b
13 Resin impregnated part 13 'Infiltration part 14 Resin liquid 32 for sealing 32 Terminal part 33 Resin liquid

Claims (8)

複数の中空糸状多孔質分離膜、及びその端末を集束して封止する膜封止部を有する分離膜エレメントであって、
前記膜封止部が、注型用樹脂により形成され、
前記中空糸状多孔質分離膜の孔が、前記中空糸状多孔質分離膜と前記膜封止部との接触部において、孔充填樹脂により充填され、前記注型用樹脂と前記孔充填樹脂が接着していることを特徴とする分離膜エレメント。 A separation membrane element having a plurality of hollow fiber-like porous separation membranes and a membrane sealing portion for concentrating and sealing the ends thereof,
The film sealing portion is formed of a casting resin,
The pores of the hollow fiber porous separation membrane are filled with pore filling resin at the contact portion between the hollow fiber porous separation membrane and the membrane sealing portion, and the casting resin and the pore filling resin are bonded. Separation membrane element characterized by that. 注型用樹脂及び孔充填樹脂が、熱硬化性樹脂の硬化物であることを特徴とする請求項１に記載の分離膜エレメント。   The separation membrane element according to claim 1, wherein the casting resin and the hole-filling resin are a cured product of a thermosetting resin. 注型用樹脂と孔充填樹脂が、同種の樹脂であることを特徴とする請求項１又は請求項２に記載の分離膜エレメント。   The separation membrane element according to claim 1 or 2, wherein the casting resin and the hole-filling resin are the same type of resin. 注型用樹脂の硬度が４０度以上であり、かつ孔充填樹脂の硬度が、注型用樹脂の硬度より小さいことを特徴とする請求項１ないし請求項３のいずれか１項に記載の分離膜エレメント。   The separation according to any one of claims 1 to 3, wherein the hardness of the casting resin is 40 degrees or more, and the hardness of the hole-filling resin is smaller than the hardness of the casting resin. Membrane element. 注型用樹脂の硬度が４０度未満であり、孔充填樹脂の硬度が、注型用樹脂の硬度と同一又は注型用樹脂の硬度より小さいことを特徴とする請求項１ないし請求項３のいずれか１項に記載の分離膜エレメント。   The hardness of the casting resin is less than 40 degrees, and the hardness of the hole-filling resin is the same as or lower than the hardness of the casting resin. The separation membrane element according to any one of the above. 中空糸状多孔質分離膜が、フッ素樹脂から形成されていることを特徴とする請求項１ないし請求項５のいずれか１項に記載の分離膜エレメント。   The separation membrane element according to any one of claims 1 to 5, wherein the hollow fiber-like porous separation membrane is made of a fluororesin. 請求項１ないし請求項６のいずれか１項に記載の分離膜エレメント及び前記分離膜エレメントを収容するハウジングからなり、前記分離膜エレメントとハウジングが一体化されていることを特徴とする分離膜モジュール。   A separation membrane module comprising the separation membrane element according to any one of claims 1 to 6 and a housing accommodating the separation membrane element, wherein the separation membrane element and the housing are integrated. . 複数の中空糸状多孔質分離膜、及びその端末を集束して封止する膜封止部からなる分離膜エレメントの製造方法であって、
複数の前記中空糸状多孔質分離膜の端末に、熱硬化性樹脂ｂの溶液を含浸させた後乾燥して、樹脂含浸部を形成する工程、
硬化前の熱硬化性樹脂ａを注型し、かつ注型された熱硬化性樹脂ａに、前記樹脂含浸部を浸漬する工程、及び
熱硬化性樹脂ａ及び熱硬化性樹脂ｂを硬化し、前記中空糸状多孔質分離膜の端末を封止する工程、
を有することを特徴とする分離膜エレメントの製造方法。 A method for producing a separation membrane element comprising a plurality of hollow fiber-like porous separation membranes and a membrane sealing portion for converging and sealing the terminals thereof,
A step of impregnating a terminal of the plurality of hollow fiber-like porous separation membranes with a solution of the thermosetting resin b and then drying to form a resin-impregnated portion;
Casting the thermosetting resin a before curing, and immersing the resin-impregnated portion in the cast thermosetting resin a; curing the thermosetting resin a and the thermosetting resin b; Sealing the end of the hollow fiber-like porous separation membrane,
A process for producing a separation membrane element, comprising:
JP2008004171A 2008-01-11 2008-01-11 Separation membrane element, separation membrane module, and manufacturing method of separation membrane element Pending JP2009165913A (en)

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