JP2011152507A - Pipe connection structure, zeolite separation membrane module - Google Patents

Pipe connection structure, zeolite separation membrane module Download PDF

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JP2011152507A
JP2011152507A JP2010015062A JP2010015062A JP2011152507A JP 2011152507 A JP2011152507 A JP 2011152507A JP 2010015062 A JP2010015062 A JP 2010015062A JP 2010015062 A JP2010015062 A JP 2010015062A JP 2011152507 A JP2011152507 A JP 2011152507A
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separation membrane
zeolite separation
zeolite
sealing member
sealing
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JP5515783B2 (en
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Soshi Inoue
宗士 井上
Takahito Akimoto
孝仁 秋元
Koji Itsunoi
浩二 五ノ井
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Meidensha Corp
Meidensha Electric Manufacturing Co Ltd
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Meidensha Electric Manufacturing Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To simplify connection working where a first tubular member and a second tubular member are connected with sealing property secured. <P>SOLUTION: In the tube connection structure 1 of the first tubular member 2 and the second tubular member 3 having an insertion section 7 to be inserted into a pipe line 6 formed in the first tubular member 2, a plurality of first sealing members 4 are provided at the insertion section 7, further, a second sealing member 5 is provided at the root of the insertion section 7 that is an end face of the first tubular member 2. An outer diameter of the first sealing member 4 should be bigger than an internal diameter of the first tubular member 2. In addition, an outer diameter of the second sealing member 5 should be bigger than the outer diameter of the first tubular member 2. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

この発明は、第1の管状部材と第2の管状部材とを連通させて接続した接続構造体と、ゼオライト分離膜モジュールに関する。特に、第1の管状部材と第2の管状部材とのシール性を確保しながら接続する接続構造体と、ゼオライト分離膜モジュールに関する。   The present invention relates to a connection structure in which a first tubular member and a second tubular member are connected in communication, and a zeolite separation membrane module. In particular, the present invention relates to a connection structure that connects a first tubular member and a second tubular member while ensuring sealing properties, and a zeolite separation membrane module.

ゼオライトは分子レベル程度の大きさの細孔を有する結晶性アルミノケイ酸塩である。ゼオライトからなる膜は分子のサイズや形状の違いにより選択的に分子を通過させる性質を有するので、分子ふるいとして用いられる。   Zeolite is a crystalline aluminosilicate having pores with a size on the order of molecular level. A membrane made of zeolite is used as a molecular sieve because it has the property of selectively passing molecules depending on the size and shape of the molecules.

近年、エネルギー効率がよいことから、ゼオライト分離膜を用いて、水と有機溶媒系混合液の分離を行うことが注目されている。   In recent years, since energy efficiency is good, it has attracted attention to perform separation of water and organic solvent mixed liquid using a zeolite separation membrane.

ゼオライト分離膜としては、例えば、多孔質セラミック管の表面にゼオライト膜が形成された分離膜を挙げることができる。このゼオライト分離膜をモジュールに組み込む一例を図4、図5を挙げて説明する。   Examples of the zeolite separation membrane include a separation membrane in which a zeolite membrane is formed on the surface of a porous ceramic tube. An example of incorporating this zeolite separation membrane into a module will be described with reference to FIGS.

ゼオライト分離膜を図5に示されたゼオライト分離膜モジュール18に組み込む場合、図4(a)に示すように、円筒状のゼオライト分離膜2の端部には接続部材3が接続される。そして、図5(b)に示すように、接続部材3の外周部に備えられる雄ねじ部38と、接続部材3を固定する固定部材15に形成された雌ねじ部39を螺合させることにより、ゼオライト分離膜2が筺体16に固定される。   When the zeolite separation membrane is incorporated into the zeolite separation membrane module 18 shown in FIG. 5, the connecting member 3 is connected to the end of the cylindrical zeolite separation membrane 2 as shown in FIG. Then, as shown in FIG. 5B, the male screw portion 38 provided on the outer peripheral portion of the connecting member 3 and the female screw portion 39 formed on the fixing member 15 for fixing the connecting member 3 are screwed together, so that the zeolite The separation membrane 2 is fixed to the housing 16.

図4(b)に示すように、接続部材3には、ゼオライト分離膜2の内部流路と連通する連通路8が形成され、連通路8の開口部の一端には、ゼオライト分離膜2の端部に挿入される挿入部7が備えられる。そして、連通路8の他端には、ゼオライト分離膜2を通過した物質(例えば、水等)を吸引除去する図示省略の流路が連通して備えられる。   As shown in FIG. 4 (b), the connecting member 3 is formed with a communication passage 8 communicating with the internal flow path of the zeolite separation membrane 2, and at one end of the opening of the communication passage 8, the zeolite separation membrane 2 is formed. An insertion portion 7 to be inserted into the end portion is provided. The other end of the communication path 8 is provided with a flow path (not shown) that sucks and removes the substance (for example, water) that has passed through the zeolite separation membrane 2.

図4(a)で示すように、ゼオライト分離膜2と接続部材3の接続部のシール性を確保するために、ゼオライト分離膜2と接続部材3とを覆うように弾性または流動性を有する部材19が備えられ、さらに弾性または流動性を有する部材19を覆うように、熱収縮チューブ20が備えられている。   As shown in FIG. 4A, a member having elasticity or fluidity so as to cover the zeolite separation membrane 2 and the connection member 3 in order to ensure the sealing performance of the connection portion between the zeolite separation membrane 2 and the connection member 3. 19, and a heat shrinkable tube 20 is provided so as to cover the member 19 having elasticity or fluidity.

また、接続部材3と固定部材15の接続部のシール性を確保するために、雄ねじ部38はテーパ状となっている。   Further, in order to ensure the sealing performance of the connecting portion between the connecting member 3 and the fixing member 15, the male screw portion 38 is tapered.

このようなシール技術と関連した技術として、特許文献1〜4の技術が検討されている。   As techniques related to such a sealing technique, the techniques of Patent Documents 1 to 4 have been studied.

特許文献1に記載の管端部接続体では、ゼオライト分離膜の端部と、このゼオライト分離膜に接続される接続部材(金属管)の端部の外周部をそれぞれ被覆する熱収縮チューブ(フッ素系熱収縮チューブ)を、膨潤性を有する部材を介して備えることで、ゼオライト分離膜と接続部材とのシール性を確保している。   In the pipe end connector described in Patent Document 1, the heat shrinkable tube (fluorine) covering the end of the zeolite separation membrane and the outer periphery of the end of the connecting member (metal tube) connected to the zeolite separation membrane. By providing the system heat-shrinkable tube via a member having swellability, the sealing property between the zeolite separation membrane and the connecting member is ensured.

また、特許文献2に記載の管端部接続体では、ゼオライト分離膜の端部と、このゼオライト分離膜に接続される接続部材(金属管)の端部の外周部をそれぞれ被覆する帯ぜんまいを、弾性または流動性を有する部材(フッ素エラストマー、フッ素グリス等)を介して備えることで、ゼオライト分離膜と接続部材とのシール性を確保している。   Moreover, in the pipe end part connection body described in Patent Document 2, the band spring that covers the end part of the zeolite separation membrane and the outer peripheral part of the end part of the connection member (metal pipe) connected to the zeolite separation membrane is provided. In addition, sealing properties between the zeolite separation membrane and the connecting member are ensured by providing them through members having elasticity or fluidity (fluorine elastomer, fluorine grease, etc.).

さらに、特許文献3に記載の流体継手では、管路が形成された第1の管状部材と、この管路に挿入する挿入軸を備えた第2の管状部材の接続構造において、挿入軸にOリングシールを備えることにより継手部分のシール性を確保している。   Furthermore, in the fluid coupling described in Patent Document 3, in the connection structure of the first tubular member in which the pipe is formed and the second tubular member having the insertion shaft to be inserted into the pipe, the insertion shaft has O By providing a ring seal, the sealing performance of the joint portion is ensured.

そして、特許文献4に記載のチューブ型膜モジュールでは、ゼオライト分離膜に接続される接続部材の固定方法に、接続部材の外周部に形成されたテーパ状のねじ部と、該ねじ部が螺合される雌ねじ部が形成された固定部材を用いることが記載されている。   In the tube-type membrane module described in Patent Document 4, the connecting member connected to the zeolite separation membrane is fixed using a tapered thread portion formed on the outer peripheral portion of the connecting member and the threaded portion screwed together. It is described that a fixing member in which a female screw portion is formed is used.

特開2007−46755号公報JP 2007-46755 A 特開2006−88079号公報JP 2006-88079 A 特開2002−195416号公報JP 2002-195416 A 特開平8−131782号公報Japanese Patent Application Laid-Open No. 8-131782

しかしながら、特許文献1、2の管端部接続体では、ゼオライト分離膜と接続部品との間にクリアランス(約1.0mm=片0.5mm)がある場合、分離膜、接続部品との接合部にゆがみが生じやすく、ゼオライト分離膜管と同軸上への接続部品の取り付けが困難であった。   However, in the pipe end connection body of Patent Documents 1 and 2, when there is a clearance (about 1.0 mm = 0.5 mm piece) between the zeolite separation membrane and the connection component, the junction between the separation membrane and the connection component Distortion was likely to occur, and it was difficult to attach the connecting component on the same axis as the zeolite separation membrane tube.

そして、前記ゆがみが生じた場合、ゼオライト分離膜で分離作業を行う際に発生させる流体により、分離膜から接続部品が脱落する等の問題が発生する虞があった。   And when the said distortion generate | occur | produced, there existed a possibility that problems, such as dropping of a connection component from a separation membrane, may generate | occur | produce with the fluid generated when performing a separation operation with a zeolite separation membrane.

さらに、特許文献1〜3のように、ゼオライト分離膜の外周にシール部材を備える接続方法は、ゼオライト分離膜と接続部材を1本接続するのに、時間がかかっていた。また、グリスを塗布する場合、グリスが漏れることによりゼオライト分離膜表面が目詰まりを起こしフィルタ効力が薄れる(ゼオライト分離膜の膜特性の低下する)虞があった。さらに、グリスの塗布方法は特殊であり、量産化を行う際には、より効率のよい接続方法が求められている。   Furthermore, as in Patent Documents 1 to 3, the connection method including the seal member on the outer periphery of the zeolite separation membrane takes time to connect one zeolite separation membrane and one connection member. Further, when applying grease, there is a possibility that the surface of the zeolite separation membrane is clogged due to leakage of the grease and the filter effect is reduced (the membrane characteristics of the zeolite separation membrane are deteriorated). Furthermore, the method of applying grease is special, and a more efficient connection method is required for mass production.

上記課題を解決する本発明に係る管接続構造体は、第1の管状部材の管路に挿入される挿入部を備える第2の管状部材と、該挿入部の外周部に形成された溝に配置される第1の密封部材と、前記挿入部の外周部であって、前記第1管状部材の端面に備えられる第2の密封部材と、を備えたことを特徴としている。   A pipe connection structure according to the present invention that solves the above problems includes a second tubular member having an insertion portion that is inserted into a conduit of the first tubular member, and a groove formed in an outer peripheral portion of the insertion portion. It is characterized by comprising a first sealing member to be arranged and a second sealing member provided on an end surface of the first tubular member, which is an outer peripheral portion of the insertion portion.

この管接続構造体において、前記第1の管状部材が、多孔質支持体上にゼオライト結晶が形成されたゼオライト分離膜である様態がある。   In this pipe connection structure, there is a mode in which the first tubular member is a zeolite separation membrane in which zeolite crystals are formed on a porous support.

また、上記管接続構造体において、前記第2の密封部材の外径が、前記第1の管状部材の外径より大きい様態がある。   In the pipe connection structure, the outer diameter of the second sealing member may be larger than the outer diameter of the first tubular member.

また、上記管接構造続体において、前記溝が複数形成され、前記溝に配置される第1の密封部材の外径が、前記第1の管状部材の内径より大きい様態がある。   Further, in the above pipe-connecting structure, there is a mode in which a plurality of the grooves are formed, and the outer diameter of the first sealing member disposed in the grooves is larger than the inner diameter of the first tubular member.

そして、上記課題を解決する本発明に係るゼオライト分離膜モジュールは、管状の多孔質支持体上にゼオライト結晶が形成されてなるゼオライト分離膜と、前記ゼオライト分離膜に形成された管路に挿入される挿入部を備え、前記ゼオライト分離膜と連通する連通路が形成された接続部材と、該挿入部の外周部に形成された複数の溝に配置される第1の密封部材と、前記挿入部の外周部であって、前記ゼオライト分離膜の端面に備えられる第2の密封部材と、を備えたことを特徴としている。   A zeolite separation membrane module according to the present invention that solves the above problems is inserted into a zeolite separation membrane in which zeolite crystals are formed on a tubular porous support, and a pipe formed in the zeolite separation membrane. A connecting member in which a communication passage communicating with the zeolite separation membrane is formed, a first sealing member disposed in a plurality of grooves formed in an outer peripheral portion of the insertion portion, and the insertion portion And a second sealing member provided on the end face of the zeolite separation membrane.

また、上記課題を解決する本発明に係るゼオライト分離膜モジュールは、管状の多孔質支持体上にゼオライト結晶が形成されてなるゼオライト分離膜と、前記ゼオライト分離膜と連通する連通路が形成され、該連通路の一端にフランジを備える接続部材と、前記接続部材の外周部に形成された管用平行ねじが螺入される雌ねじ部が形成された固定部材と、前記固定部材と前記フランジ間に備えられる第3の密封部材と、を備えたことを特徴としている。   Moreover, the zeolite separation membrane module according to the present invention for solving the above-mentioned problems is formed with a zeolite separation membrane in which zeolite crystals are formed on a tubular porous support, and a communication passage communicating with the zeolite separation membrane. A connecting member having a flange at one end of the communication path; a fixing member having a female thread portion into which a pipe parallel screw formed on the outer periphery of the connecting member is screwed; and between the fixing member and the flange. And a third sealing member.

以上の発明によれば、第1の管状部材と、第2の管状部材がシール性を確保した状態で接続する接続作業が簡略化される。また、ゼオライト分離膜モジュールの組立作業が容易になる。   According to the above invention, the connection work which connects the 1st tubular member and the 2nd tubular member in the state which ensured the sealing performance is simplified. Further, the assembly work of the zeolite separation membrane module is facilitated.

本発明の実施形態に係る管接続構造体の断面図。Sectional drawing of the pipe connection structure which concerns on embodiment of this invention. 本発明の実施形態に係る接続部材の断面図であって、(a)密封部材が備えられていない図、(b)密封部材が備えられた図。It is sectional drawing of the connection member which concerns on embodiment of this invention, Comprising: (a) The figure without the sealing member, (b) The figure with which the sealing member was provided. 本発明の実施形態に係るゼオライト分離膜モジュールの断面図。Sectional drawing of the zeolite separation membrane module which concerns on embodiment of this invention. (a)従来技術に係る管接続構造体の断面図、(b)従来技術に係る接続部材の断面図。(A) Sectional drawing of the pipe connection structure which concerns on a prior art, (b) Sectional drawing of the connection member which concerns on a prior art. 従来技術に係るゼオライト分離膜モジュールの断面図であって、(a)筺体にゼオライト分離膜が備えられる前の図、(b)筺体にゼオライト分離膜が備えられた図。It is sectional drawing of the zeolite separation membrane module which concerns on a prior art, Comprising: (a) The figure before a zeolite separation membrane is provided in a housing | casing, (b) The figure in which the housing was equipped with the zeolite separation membrane. 本発明の比較例2に係る管接続構造体の断面図。Sectional drawing of the pipe connection structure which concerns on the comparative example 2 of this invention. 本発明の実施形態に係る管接続構造体のリークの有無を確認するため用いた風速測定システムの構成を示す概略図。Schematic which shows the structure of the wind speed measurement system used in order to confirm the presence or absence of the leak of the pipe connection structure which concerns on embodiment of this invention. (a)本発明の実施形態に係る管接続構造体のリークの有無を確認するため用いたPV/VP試験システムの構成を示す概略図、(b)ゼオライト分離膜モジュールの拡大断面図。(A) Schematic which shows the structure of the PV / VP test system used in order to confirm the presence or absence of the leak of the pipe connection structure which concerns on embodiment of this invention, (b) The expanded sectional view of a zeolite separation membrane module.

本発明の実施形態に係る管接続構造体、及び管接続構造体を備えるゼオライト分離膜モジュールについて図1〜3を参照して説明する。   A tube connection structure according to an embodiment of the present invention and a zeolite separation membrane module including the tube connection structure will be described with reference to FIGS.

(本発明の実施形態の管接続構造体1の構成)
図1に示すように、本発明の実施形態に係る管接続構造体1は、円筒状のゼオライト分離膜2と、ゼオライト分離膜2に形成された管路6に挿入される挿入部7を備える接続部材3と、挿入部7に備えられる密封部材4(第1の密封部材)と、ゼオライト分離膜2の端面に備えられる密封部材5(第2の密封部材)より構成される。
(Configuration of the pipe connection structure 1 of the embodiment of the present invention)
As shown in FIG. 1, a pipe connection structure 1 according to an embodiment of the present invention includes a cylindrical zeolite separation membrane 2 and an insertion portion 7 that is inserted into a pipeline 6 formed in the zeolite separation membrane 2. The connecting member 3, the sealing member 4 (first sealing member) provided in the insertion portion 7, and the sealing member 5 (second sealing member) provided on the end face of the zeolite separation membrane 2 are configured.

ゼオライト分離膜2は、既知の分離膜を用いればよく、例えば、多孔質セラミック管(多孔質支持体)の表面にゼオライト膜が形成された分離膜を用いればよい。なお、ゼオライト分離膜2の両端に接続部材3を備える形態、ゼオライト分離膜2の一端が封止され、他端に接続部材3を備える形態どちらの形態でゼオライト分離膜2をゼオライト分離膜モジュールに組み込んでもよい。   The zeolite separation membrane 2 may be a known separation membrane, for example, a separation membrane in which a zeolite membrane is formed on the surface of a porous ceramic tube (porous support). It should be noted that the zeolite separation membrane 2 is formed into a zeolite separation membrane module in either form in which the connection member 3 is provided at both ends of the zeolite separation membrane 2 or one form in which the zeolite separation membrane 2 is sealed at one end and the connection member 3 is provided at the other end. It may be incorporated.

接続部材3は、図2(a)に示すように、ゼオライト分離膜2及びゼオライト分離膜2を通過した物質を吸引除去する流路(図示省略)に連通する連通路8が形成されている。連通路8の一端には、ゼオライト分離膜2の管路6に挿入される挿入部7が形成され、他端には、フランジ部9が備えられている。さらに、接続部材3の外周には、接続部材3を固定する固定部材(図示省略)に形成された雌ねじ部11と螺合する雄ねじ部10が形成されている。また、挿入部7の外周には、第1の密封部材4を備えるための溝12が形成されている。   As shown in FIG. 2A, the connecting member 3 is formed with a zeolite separation membrane 2 and a communication passage 8 that communicates with a flow path (not shown) that sucks and removes the substance that has passed through the zeolite separation membrane 2. An insertion portion 7 to be inserted into the pipe 6 of the zeolite separation membrane 2 is formed at one end of the communication passage 8, and a flange portion 9 is provided at the other end. Further, on the outer periphery of the connection member 3, a male screw portion 10 that is screwed with a female screw portion 11 formed on a fixing member (not shown) that fixes the connection member 3 is formed. A groove 12 for providing the first sealing member 4 is formed on the outer periphery of the insertion portion 7.

接続部材3の材質は、使用環境に応じて適宜選択すればよい。例えば、耐熱性、耐溶剤性に優れたステンレス製管体(SUS304)が挙げられる。   What is necessary is just to select the material of the connection member 3 suitably according to a use environment. For example, a stainless steel tube (SUS304) excellent in heat resistance and solvent resistance can be mentioned.

さらに、接続部材3の外周に形成される雄ねじ部10をストレート形(管用平行ねじ)とすると、テーパ状のねじと比較してねじ山不良を低減することができる。この場合、テーパ状のねじと比較してシール性が低下するため、接続部材3のフランジ部9と固定部材間に弾性を有する第3の密封部材13(例えば、フッ素ゴムからなる板パッキン)を備えるとよい。   Furthermore, when the male thread portion 10 formed on the outer periphery of the connecting member 3 is a straight type (parallel pipe thread), it is possible to reduce thread defects as compared with a tapered thread. In this case, since the sealing performance is lowered as compared with the tapered screw, a third sealing member 13 (for example, a plate packing made of fluoro rubber) having elasticity between the flange portion 9 of the connection member 3 and the fixing member is used. It is good to have.

第1の密封部材4は、使用環境に応じて既知の密封部材を用いればよい。例えば、弾性を有し、耐熱性、耐溶剤性に優れたフッ素ゴムからなるOリングが挙げられる。   The first sealing member 4 may be a known sealing member depending on the use environment. For example, an O-ring made of fluororubber having elasticity and excellent heat resistance and solvent resistance can be used.

ゼオライト分離膜2と接続部材3の接合部のシール性を確保しながら、ゼオライト分離膜2を内側より支持するために、第1の密封部材4は、複数備えるとよい。図2(b)に示すように、ゼオライト分離膜2と接続部材3を接続する場合、接続部材3の溝12に第1の密封部材4が備えられる。この時、それぞれの第1の密封部材4は、ある程度の間隔(例えば、10mm以上)をあけて備えると、よりゼオライト分離膜2を支持する効果が向上する。   In order to support the zeolite separation membrane 2 from the inside while ensuring the sealing performance of the joint between the zeolite separation membrane 2 and the connection member 3, it is preferable to provide a plurality of first sealing members 4. As shown in FIG. 2B, when connecting the zeolite separation membrane 2 and the connection member 3, the first sealing member 4 is provided in the groove 12 of the connection member 3. At this time, if each first sealing member 4 is provided with a certain gap (for example, 10 mm or more), the effect of supporting the zeolite separation membrane 2 is further improved.

また、第1の密封部材4の外径は、ゼオライト分離膜2に形成された管路6の内径よりよりも大きくするとよい。例えば、第1の密封部材4の外径を、ゼオライト分離膜2の内径より0.3mm〜0.6mm程度大きくするとよい。第1の密封部材4の外径を大きくすることにより、ゼオライト分離膜2と接続部材3を同軸上に備えることができる。   Further, the outer diameter of the first sealing member 4 is preferably larger than the inner diameter of the pipe 6 formed in the zeolite separation membrane 2. For example, the outer diameter of the first sealing member 4 may be larger than the inner diameter of the zeolite separation membrane 2 by about 0.3 mm to 0.6 mm. By increasing the outer diameter of the first sealing member 4, the zeolite separation membrane 2 and the connecting member 3 can be provided coaxially.

第2の密封部材5は、使用環境に応じて既知の密封部材を用いればよい。例えば、弾性を有し、耐熱性、耐溶剤性に優れたフッ素ゴムからなるOリングが挙げられる。第2の密封部材5は、挿入部7の根元に備えられる。第2の密封部材5の外径は、接続されるゼオライト分離膜2の外径以上であるとよい。   The second sealing member 5 may be a known sealing member depending on the use environment. For example, an O-ring made of fluororubber having elasticity and excellent heat resistance and solvent resistance can be used. The second sealing member 5 is provided at the base of the insertion portion 7. The outer diameter of the second sealing member 5 is preferably equal to or larger than the outer diameter of the zeolite separation membrane 2 to be connected.

ゼオライト分離膜2の端面は、ゼオライト結晶が成長・膜化しないので、シール性を向上させる処理を行わない状態では、ゼオライト分離膜2へリークが発生する可能性が大きい。そのため、第2の密封部材5の幅は、ゼオライト分離膜2の厚み以上ものを選択するとよい。すなわち、ゼオライト分離膜2の端面に該端面を覆うように第2の密封部材5を配置することで、膜化していないゼオライト分離膜2の端面を封止することができる。   Since the zeolite crystal does not grow or become a membrane on the end face of the zeolite separation membrane 2, there is a high possibility that leakage will occur in the zeolite separation membrane 2 in a state where the treatment for improving the sealing property is not performed. Therefore, the width of the second sealing member 5 is preferably selected to be greater than the thickness of the zeolite separation membrane 2. That is, by disposing the second sealing member 5 on the end face of the zeolite separation membrane 2 so as to cover the end face, it is possible to seal the end face of the zeolite separation membrane 2 that has not been made into a membrane.

ゼオライト分離膜2を用いて、混合液の分離を行う場合、ゼオライト分離膜2内部は真空引きされる。したがって、真空引きの圧力によりゼオライト分離膜2の端面が、第2の密封部材5に押し付けられ、ゼオライト分離膜2と接続部材3とのシール性が良好な状態となる。   When the mixed liquid is separated using the zeolite separation membrane 2, the inside of the zeolite separation membrane 2 is evacuated. Therefore, the end face of the zeolite separation membrane 2 is pressed against the second sealing member 5 by the vacuuming pressure, and the sealing property between the zeolite separation membrane 2 and the connecting member 3 is in a good state.

なお、ゼオライト分離膜2と接続部材3との接合部を熱収縮チューブ(例えば、フッ素系熱収縮チューブ)で覆い、接合部のシール性を向上させてもよい。   Note that the joint between the zeolite separation membrane 2 and the connection member 3 may be covered with a heat shrinkable tube (for example, a fluorine heat shrinkable tube) to improve the sealing performance of the joint.

(本発明の実施形態に係る管接続構造体1の適用例)
図3に示すように、上述の管接続構造体1を備える、本発明の実施形態に係るゼオライト分離膜モジュール14は、ゼオライト分離膜2と接続部材3とを接続する際、第1の密封部材4及び第2の密封部材5が備えられた接続部材3の挿入部7にゼオライト分離膜2を差し込む作業だけでよいので、従来のゼオライト分離膜モジュールの組立作業と比較すると組立作業が格段に簡易化される。
(Application example of the pipe connection structure 1 according to the embodiment of the present invention)
As shown in FIG. 3, the zeolite separation membrane module 14 according to the embodiment of the present invention including the above-described pipe connection structure 1 is a first sealing member when the zeolite separation membrane 2 and the connection member 3 are connected. Since only the operation of inserting the zeolite separation membrane 2 into the insertion portion 7 of the connection member 3 provided with the 4 and the second sealing member 5 is required, the assembly operation is remarkably simple as compared with the assembly operation of the conventional zeolite separation membrane module. It becomes.

したがって、ゼオライト分離膜モジュール14の設置作業、及びゼオライト分離膜2の交換作業等の時間を大幅に短縮できる。さらに、接続部材3の挿入部7をゼオライト分離膜2に差し込むだけで、ゼオライト分離膜2と接続部材3との間の接続部のシール性が確保できるとともに、接続部材3の流路とゼオライト分離膜2の流路を同軸上に備えることができる。すなわち、ゼオライト分離膜モジュール14の信頼性が向上する。   Therefore, the time for installing the zeolite separation membrane module 14 and for exchanging the zeolite separation membrane 2 can be greatly reduced. Furthermore, by simply inserting the insertion portion 7 of the connection member 3 into the zeolite separation membrane 2, the sealing performance of the connection portion between the zeolite separation membrane 2 and the connection member 3 can be ensured, and the flow path of the connection member 3 and the zeolite separation can be secured. The flow path of the membrane 2 can be provided coaxially. That is, the reliability of the zeolite separation membrane module 14 is improved.

また、挿入部7に複数の第1の密封部材4を所定の間隔をあけて備えることにより、ゼオライト分離膜2がより確実に支持される。したがって、ゼオライト分離膜モジュール14の稼働時において、ゼオライト分離膜2の脱落を防止することができる。   Moreover, the zeolite separation membrane 2 is supported more reliably by providing the insertion portion 7 with the plurality of first sealing members 4 at predetermined intervals. Accordingly, it is possible to prevent the zeolite separation membrane 2 from falling off during operation of the zeolite separation membrane module 14.

また、接続部材3をゼオライト分離膜モジュール14の固定部15に固定する管用ねじ部10を平行ねじとすることで、ねじ部にかかる摩擦力が減少するため、接続部材3と固定部15が同材であっても、ねじ山不良が発生しにくくなる。すなわち、テーパねじを用いた場合よりねじ山不良が低減し、作業性も向上する。この際、接続部材3に備えられるフランジ部9と固定部材15の間に第3の密封部材13を備えることにより、接続部材3と固定部材15の間のシール性を、テーパねじを用いた場合と同等とすることができる。   In addition, since the pipe thread portion 10 that fixes the connecting member 3 to the fixing portion 15 of the zeolite separation membrane module 14 is a parallel screw, the frictional force applied to the screw portion is reduced, so the connecting member 3 and the fixing portion 15 are the same. Even if it is a material, it becomes difficult to generate thread defects. That is, thread defects are reduced and workability is improved as compared with the case of using a taper screw. At this time, when the third sealing member 13 is provided between the flange portion 9 provided in the connection member 3 and the fixing member 15, the sealing performance between the connection member 3 and the fixing member 15 is obtained using a taper screw. Can be equivalent.

なお、図3で示すゼオライト分離膜モジュール14には、固定部材15にゼオライト分離膜2が1つ備えられている例が示されているが、固定部材15にゼオライト分離膜2を複数備えてもよい。本発明のゼオライト分離膜モジュール14では、ゼオライト分離膜2と接続部材3が一体化しているので、筺体16中にゼオライト分離膜2を多数本収納することが可能となる。   The zeolite separation membrane module 14 shown in FIG. 3 shows an example in which the fixed member 15 includes one zeolite separation membrane 2, but the fixed member 15 may include a plurality of zeolite separation membranes 2. Good. In the zeolite separation membrane module 14 of the present invention, since the zeolite separation membrane 2 and the connection member 3 are integrated, a large number of zeolite separation membranes 2 can be accommodated in the casing 16.

(シール性の確認)
本発明の接続構造体1を備えるゼオライト分離膜モジュール14において、ゼオライト分離膜2と接続部材3との接合部からのリークの有無の検証を行った。リークの有無の検証は、風速測定方法及びPV(パーベーパレーション)/VP(蒸気透過)試験装置により行った。
(1)実施例1
実施例1のゼオライト分離膜モジュール14として、図1に示す管接続構造体1を備えるゼオライト分離膜モジュール14を用いた。
(Confirmation of sealing performance)
In the zeolite separation membrane module 14 provided with the connection structure 1 of the present invention, the presence or absence of leakage from the joint portion between the zeolite separation membrane 2 and the connection member 3 was verified. The presence or absence of leakage was verified by a wind speed measuring method and a PV (pervaporation) / VP (vapor transmission) test apparatus.
(1) Example 1
As the zeolite separation membrane module 14 of Example 1, the zeolite separation membrane module 14 provided with the pipe connection structure 1 shown in FIG. 1 was used.

実施例1では、第1の密封部材4と第2の密封部材5として、フッ素ゴムからなるOリングを用いた。そして、第3の密封部材13として、フッ素ゴムからなる板パッキンを用いた。
(2)比較例1
従来技術に係るゼオライト分離膜モジュールとして、図4に示す管接続構造体17を備える、ゼオライト分離膜モジュール18を用いた。
In Example 1, O-rings made of fluororubber were used as the first sealing member 4 and the second sealing member 5. A plate packing made of fluororubber was used as the third sealing member 13.
(2) Comparative Example 1
As a zeolite separation membrane module according to the prior art, a zeolite separation membrane module 18 provided with the pipe connection structure 17 shown in FIG. 4 was used.

比較例1のゼオライト分離膜モジュール18では、ゼオライト分離膜2と接続部材3の接続部を覆うように、弾性または流動性を有する部材19が備えられ、さらに弾性または流動性を有する部材19を覆うように、熱収縮チューブ20が備えられている。
(3)比較例2
図6に示すように、比較例2に係るゼオライト分離膜モジュールに備えられる管接続構造体21は、ゼオライト分離膜2の端面に第2の密封部材5が備えられていないこと以外は、実施例1で示した管接続構造体1と同じ構造の管接続構造体21を備えるゼオライト分離膜モジュールである。
In the zeolite separation membrane module 18 of Comparative Example 1, the member 19 having elasticity or fluidity is provided so as to cover the connection portion between the zeolite separation membrane 2 and the connection member 3, and further the member 19 having elasticity or fluidity is covered. Thus, a heat shrinkable tube 20 is provided.
(3) Comparative Example 2
As shown in FIG. 6, the pipe connection structure 21 provided in the zeolite separation membrane module according to Comparative Example 2 is an example except that the second sealing member 5 is not provided on the end face of the zeolite separation membrane 2. 1 is a zeolite separation membrane module including a pipe connection structure 21 having the same structure as the pipe connection structure 1 shown in FIG.

(試験装置)
図7に風速測定システムの構成を示す。風速測定システム22は、ゼオライト分離膜モジュール24にレギュレータ25、ミストフィルタ26、フィルタ27を介してコンプレッサ23が接続されている。そして、ゼオライト分離膜2の内部を流通する気体の風速を測定する図示省略の風速計が備えられている。風速計で測定する風速の測定位置を矢印Aで示す。
(Test equipment)
FIG. 7 shows the configuration of the wind speed measurement system. In the wind speed measurement system 22, a compressor 23 is connected to a zeolite separation membrane module 24 through a regulator 25, a mist filter 26, and a filter 27. An anemometer (not shown) that measures the wind speed of the gas flowing inside the zeolite separation membrane 2 is provided. The measurement position of the wind speed measured by the anemometer is indicated by an arrow A.

風速測定システム22は、ゼオライト分離膜2の外周部にコンプレッサ23により空気を送り込み、ゼオライト分離膜2の内部の風速を測定するものである。図7の風速測定位置Aで風速を測定する風速計には、熱線式風速計(AM−4204 LT Lutron)を用いた。   The wind speed measurement system 22 measures the wind speed inside the zeolite separation membrane 2 by sending air to the outer periphery of the zeolite separation membrane 2 by the compressor 23. A hot-wire anemometer (AM-4204 LT Lutron) was used as the anemometer for measuring the wind speed at the wind speed measurement position A in FIG.

上記比較例1、2及び実施例1について、ゼオライト分離膜2の膜外面から圧縮空気による圧力(0.5MPa)をかけ、ゼオライト分離膜2の内部へ漏れる空気量を風速値として測定した(風速測定時の気温は約38.0℃である)。測定結果を表1に示す。   About the said comparative examples 1 and 2 and Example 1, the pressure by compressed air (0.5 Mpa) was applied from the membrane outer surface of the zeolite separation membrane 2, and the amount of air leaking into the inside of the zeolite separation membrane 2 was measured as a wind velocity value (wind velocity The temperature at the time of measurement is about 38.0 ° C). The measurement results are shown in Table 1.

Figure 2011152507
Figure 2011152507

比較例1の接続方法では、風速値が0.0m/sであり、ゼオライト分離膜2と接続部材3との接合部に漏れが発生していないことが確認された。   In the connection method of Comparative Example 1, the wind speed value was 0.0 m / s, and it was confirmed that no leakage occurred at the joint between the zeolite separation membrane 2 and the connection member 3.

比較例2の接続方法では、風速値が0.61m/sであり、ゼオライト分離膜2と接続部材3との接合部に漏れが発生していることが確認された。   In the connection method of Comparative Example 2, the wind speed value was 0.61 m / s, and it was confirmed that leakage occurred at the joint between the zeolite separation membrane 2 and the connection member 3.

実施例1の接合方法では、風速値が0.0m/sであり、比較例1と同様にゼオライト分離膜2と接続部材3との接合部に漏れが発生していないことが確認された。   In the joining method of Example 1, the wind speed value was 0.0 m / s, and it was confirmed that no leakage occurred at the joint between the zeolite separation membrane 2 and the connecting member 3 as in Comparative Example 1.

したがって、実施例1と比較例2との比較から明らかなように、接続部材3の挿入部7の根元に設置したOリング5によりゼオライト分離膜2端面のシール性が良好になることがわかる。   Therefore, as is clear from the comparison between Example 1 and Comparative Example 2, it can be seen that the O-ring 5 installed at the base of the insertion portion 7 of the connecting member 3 improves the sealing performance of the end face of the zeolite separation membrane 2.

次に、上記風速測定方法によりリークが無いと確認された管接続構造体(比較例1、実施例1)の、パーベーパレーション試験条件下におけるゼオライト分離膜2と接続部材3との接合部からのリークの有無の検証を行った。   Next, from the joint part of the zeolite separation membrane 2 and the connection member 3 of the pipe connection structure (Comparative Example 1 and Example 1) confirmed as having no leak by the wind speed measuring method under the pervaporation test conditions. The presence or absence of leaks was verified.

図8(a)にPV/VP測定システム28の構成を示す。図8(b)は、ゼオライト分離膜2を備えたゼオライト分離膜モジュール31の拡大断面図である。   FIG. 8A shows the configuration of the PV / VP measurement system 28. FIG. 8B is an enlarged cross-sectional view of the zeolite separation membrane module 31 provided with the zeolite separation membrane 2.

図8(a)に示すように、PV/VP測定システム28は、ゼオライト分離膜モジュール31に供給液タンク32の供給液を供給する供給ポンプ29と、ゼオライト分離膜モジュール31内のゼオライト分離膜2の内部流路と連通して備えられる透過液配管34を真空引きする真空ポンプ30から構成される。   As shown in FIG. 8A, the PV / VP measurement system 28 includes a supply pump 29 that supplies the supply liquid in the supply liquid tank 32 to the zeolite separation membrane module 31, and the zeolite separation membrane 2 in the zeolite separation membrane module 31. And a vacuum pump 30 for evacuating a permeate pipe 34 provided in communication with the internal flow path.

図8(a)、(b)を参照して、PV/VP測定システム28における、供給液、及び透過液の流路流通形態を説明する。ゼオライト分離膜31が接続された供給液配管33より供給液がゼオライト分離膜2の外周部に供給される。ゼオライト分離膜2を透過した透過液は、透過液配管34を通過して、凝縮器35により集められる。また、ゼオライト分離膜2を透過しなかった液は、濃縮液として濃縮液配管36を通過して供給液タンク32に戻される。   With reference to FIG. 8 (a), (b), the flow path distribution form of the supply liquid and permeate in the PV / VP measurement system 28 is demonstrated. A supply liquid is supplied to the outer periphery of the zeolite separation membrane 2 from a supply liquid pipe 33 to which the zeolite separation membrane 31 is connected. The permeate that has passed through the zeolite separation membrane 2 passes through the permeate pipe 34 and is collected by the condenser 35. The liquid that has not permeated the zeolite separation membrane 2 passes through the concentrate pipe 36 as a concentrate and is returned to the supply liquid tank 32.

PV/VP測定では、ガスクロマトグラフィにより濃縮液及び透過液の組成の変化を測定し、濃縮液及び透過液の組成の変化にもとづいて、ゼオライト分離膜モジュール31のリークの評価を行った。   In PV / VP measurement, changes in the composition of the concentrate and permeate were measured by gas chromatography, and the leakage of the zeolite separation membrane module 31 was evaluated based on the changes in the composition of the concentrate and permeate.

上記比較例1及び実施例1について、PV/VP測定を行った。   About the said comparative example 1 and Example 1, PV / VP measurement was performed.

供給液は99wt%イソプロピルアルコール(以降IPAと略記)を使用し、電熱ヒータ37にて120℃に加熱、系内圧力を約0.4MPaとし、IPA流量約15L/min、真空度約5.00kPa条件化でゼオライト分離膜2の性能測定法であるパーベーパレーション(透過気化法)試験を行った。測定結果を表2に示す。   The supply liquid is 99 wt% isopropyl alcohol (hereinafter abbreviated as IPA), heated to 120 ° C. with an electric heater 37, the system pressure is about 0.4 MPa, the IPA flow rate is about 15 L / min, and the degree of vacuum is about 5.00 kPa. A pervaporation (pervaporation method) test, which is a method for measuring the performance of the zeolite separation membrane 2, was performed under conditions. The measurement results are shown in Table 2.

Figure 2011152507
Figure 2011152507

リークの確認として、単位時間(h)、単位面積(m2)当たりのゼオライト分離膜透過量(Q)を算出した。また、分離係数をαとしたとき、分離係数αは、被分離液中のIPA濃度、H2O濃度をそれぞれ、PIPA、Pwとし、透過液中のIPA濃度、H2O濃度をそれぞれ、FIPA、Fwとしたとき、(1)式で求められる。 As a confirmation of the leakage, the zeolite separation membrane permeation amount (Q) per unit time (h) and unit area (m 2 ) was calculated. Further, when the separation factor is α, the separation factor α is defined as IPA concentration and H 2 O concentration in the liquid to be separated, P IPA and P w , respectively, and IPA concentration and H 2 O concentration in the permeated liquid, respectively. , F IPA , F w , it can be obtained by equation (1).

α=(PIPA/Pw)/(FIPA/Fw) …(1)
比較例1と実施例1では、同様のゼオライト分離膜2を用いているため、Qには変化がないことを前提に評価すると、Qが上昇するとゼオライト分離膜2と接続部材3の接続部でリークが発生したと考えられる。
α = (P IPA / P w ) / (F IPA / F w ) (1)
In Comparative Example 1 and Example 1, since the same zeolite separation membrane 2 is used, if Q is evaluated on the assumption that there is no change, when Q increases, the connection between the zeolite separation membrane 2 and the connection member 3 It is considered that a leak has occurred.

また、ゼオライト分離膜2と接続部材3の接続部でリークが発生すると、ゼオライト分離膜2の外周部にある高濃度のIPAがゼオライト分離膜2内に流入するため(式(1)でFIPAが増加)、αが減少するものと考えられる。 In addition, when a leak occurs at the connection portion between the zeolite separation membrane 2 and the connection member 3, high concentration IPA in the outer peripheral portion of the zeolite separation membrane 2 flows into the zeolite separation membrane 2 (F IPA in equation (1)). Is increased), and α is considered to decrease.

比較例1では、Qが13kg/m2・h以上であり、αが30以上であった。一方、実施例1においても、Qは13kg/m2・h以上であり、αが30以上であった。 In Comparative Example 1, Q was 13 kg / m 2 · h or more, and α was 30 or more. On the other hand, also in Example 1, Q was 13 kg / m 2 · h or more, and α was 30 or more.

以上より、パーベーパレーションを行う条件においても、実施例1の接続方法により接続された管接続構造体は、従来技術に係る管接続構造体と同等のシール性を備えていることが確認された。   From the above, it was confirmed that the pipe connection structure connected by the connection method of Example 1 has the same sealing performance as the pipe connection structure according to the prior art even under the conditions for pervaporation. .

以上のように、本発明の管接続構造体によれば、シール性を確保しながら第1の管状部材と第2の管状部材を接続する作業を簡略することができる。したがって、本発明のゼオライト分離膜モジュールにおいて、ゼオライト分離膜と接続部材とのシール性を確保しながら接続する接続作業を簡略することができる。   As described above, according to the pipe connection structure of the present invention, it is possible to simplify the operation of connecting the first tubular member and the second tubular member while ensuring sealing performance. Therefore, in the zeolite separation membrane module of the present invention, it is possible to simplify the connecting operation of connecting the zeolite separation membrane and the connecting member while ensuring the sealing property.

ゼオライト分離膜と接続部材の接続作業は、密封部材が備えられた接続部材の挿入部にゼオライト分離膜を差し込む作業である。したがって、1本接続するために5分〜10分の接続時間を必要とする従来のゼオライト分離膜の接続作業と比較すると、接続作業が格段に簡易化される。   The operation of connecting the zeolite separation membrane and the connection member is an operation of inserting the zeolite separation membrane into the insertion portion of the connection member provided with the sealing member. Therefore, compared with the connection work of the conventional zeolite separation membrane which requires a connection time of 5 minutes to 10 minutes to connect one, the connection work is greatly simplified.

さらに、接続部材をゼオライト分離膜モジュールに固定する管用ねじを平行ねじとしても、接続部材と固定部間のシール性が確保される構造としたため、テーパねじを用いた場合よりねじ山不良が低減し、作業性が向上する。   Furthermore, even if the pipe screw that fixes the connection member to the zeolite separation membrane module is a parallel screw, the sealability between the connection member and the fixed part is ensured, so the thread failure is reduced compared to the case of using a taper screw. , Workability is improved.

なお、本発明の管接続構造体、及びゼオライト分離膜モジュールは、上記実施形態で説明した形態に限定されるものではなく、適宜発明の効果を損なわない範囲で変更可能である。例えば、本発明の管接続構造体は、ゼオライト分離膜モジュールのゼオライト分離膜と接続部材との接続のみに用いることに限定されるものではなく、シール性を確保しながら、第1の管状部材と、第2の管状部材を接続する場合に用いることができる。   In addition, the pipe connection structure and the zeolite separation membrane module of the present invention are not limited to the forms described in the above embodiment, and can be changed as long as the effects of the invention are not impaired. For example, the pipe connection structure of the present invention is not limited to use only for connection between the zeolite separation membrane of the zeolite separation membrane module and the connection member, and the first tubular member while securing sealing properties It can be used when connecting the second tubular member.

1…管接続構造体
2…ゼオライト分離膜(第1の管状部材)
3…接続部材(第2の管状部材)
4…第1の密封部材
5…第2の密封部材
6…管路
7…挿入部
8…連通路
9…フランジ部
15…固定部材
16…筺体
DESCRIPTION OF SYMBOLS 1 ... Pipe connection structure 2 ... Zeolite separation membrane (1st tubular member)
3. Connection member (second tubular member)
4 ... 1st sealing member 5 ... 2nd sealing member 6 ... Pipe line 7 ... Insertion part 8 ... Communication path 9 ... Flange part 15 ... Fixing member 16 ... Housing

Claims (6)

第1の管状部材の管路に挿入される挿入部を備える第2の管状部材と、
該挿入部の外周部に形成された溝に配置される第1の密封部材と、
前記挿入部の外周部であって、前記第1管状部材の端面に備えられる第2の密封部材と、を備えた
ことを特徴とする管接続構造体。
A second tubular member comprising an insertion portion to be inserted into the conduit of the first tubular member;
A first sealing member disposed in a groove formed in the outer peripheral portion of the insertion portion;
A tube connecting structure comprising: a second sealing member provided on an outer peripheral portion of the insertion portion and provided on an end surface of the first tubular member.
前記第1の管状部材は、多孔質支持体上にゼオライト結晶が形成されたゼオライト分離膜である
ことを特徴とする請求項1に記載の管接続構造体。
The pipe connection structure according to claim 1, wherein the first tubular member is a zeolite separation membrane in which zeolite crystals are formed on a porous support.
前記第2の密封部材の外径は、前記第1の管状部材の外径より大きい
ことを特徴とする請求項1または請求項2に記載の管接続構造体。
The pipe connection structure according to claim 1 or 2, wherein an outer diameter of the second sealing member is larger than an outer diameter of the first tubular member.
前記溝は複数形成され、
前記溝に配置される第1の密封部材の外径は、前記第1の管状部材の内径より大きい
ことを特徴とする請求項1から請求項3のいずれか1項に記載の管接続構造体。
A plurality of the grooves are formed,
4. The pipe connection structure according to claim 1, wherein an outer diameter of the first sealing member disposed in the groove is larger than an inner diameter of the first tubular member. 5. .
管状の多孔質支持体上にゼオライト結晶が形成されてなるゼオライト分離膜と、
前記ゼオライト分離膜に形成された管路に挿入される挿入部を備え、前記ゼオライト分離膜と連通する連通路が形成された接続部材と、
該挿入部の外周部に形成された複数の溝に配置される第1の密封部材と、
前記挿入部の外周部であって、前記ゼオライト分離膜の端面に備えられる第2の密封部材と、を備えた
ことを特徴とするゼオライト分離膜モジュール。
A zeolite separation membrane in which zeolite crystals are formed on a tubular porous support;
A connecting member having an insertion portion inserted into a pipe formed in the zeolite separation membrane, and having a communication passage communicating with the zeolite separation membrane;
A first sealing member disposed in a plurality of grooves formed on the outer periphery of the insertion portion;
A zeolite separation membrane module comprising: a second sealing member provided on an outer peripheral portion of the insertion portion and provided on an end face of the zeolite separation membrane.
管状の多孔質支持体上にゼオライト結晶が形成されてなるゼオライト分離膜と、
前記ゼオライト分離膜と連通する連通路が形成され、該連通路の一端にフランジを備える接続部材と、
前記ゼオライト分離膜支持部材の外周部に形成された管用平行ねじが螺入される雌ねじ部が形成された固定部材と、
前記固定部材と前記フランジ間に備えられる第3の密封部材と、を備えた
ことを特徴とするゼオライト分離膜モジュール。
A zeolite separation membrane in which zeolite crystals are formed on a tubular porous support;
A communication path formed in communication with the zeolite separation membrane, and a connecting member having a flange at one end of the communication path;
A fixing member formed with a female screw portion into which a parallel pipe screw formed on the outer peripheral portion of the zeolite separation membrane support member is screwed;
A zeolite separation membrane module, comprising: a third sealing member provided between the fixing member and the flange.
JP2010015062A 2010-01-27 2010-01-27 Pipe connection structure, zeolite separation membrane module Expired - Fee Related JP5515783B2 (en)

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