JP2003053166A - Method for making dense porous ceramic hollow fiber membrane - Google Patents

Method for making dense porous ceramic hollow fiber membrane

Info

Publication number
JP2003053166A
JP2003053166A JP2001249537A JP2001249537A JP2003053166A JP 2003053166 A JP2003053166 A JP 2003053166A JP 2001249537 A JP2001249537 A JP 2001249537A JP 2001249537 A JP2001249537 A JP 2001249537A JP 2003053166 A JP2003053166 A JP 2003053166A
Authority
JP
Japan
Prior art keywords
hollow fiber
fiber membrane
dense
porous ceramic
porous
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP2001249537A
Other languages
Japanese (ja)
Inventor
Hirokata Mizuta
裕賢 水田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nok Corp
Original Assignee
Nok Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nok Corp filed Critical Nok Corp
Priority to JP2001249537A priority Critical patent/JP2003053166A/en
Publication of JP2003053166A publication Critical patent/JP2003053166A/en
Withdrawn legal-status Critical Current

Links

Landscapes

  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a method for making the end of a porous ceramic hollow fiber membrane dense in which the reproducibility of tight sealing property for gas can be sufficiently maintained without deforming the hollow fiber membrane. SOLUTION: While a dense ceramic tube is inserted into the inside of the end of a porous ceramic hollow fiber membrane, the contact part of the end binding material is heated and sintered to be made dense. This method does not involve deformation of the hollow fiber membrane, and moreover, when the porous ceramic hollow fiber membrane is integrated with the dense ceramic tube, not only the strength of the integrated part is increased but damages in the hollow fiber membrane can be decreased. A hollow fiber membrane module which uses the hollow fiber membrane used by the above method is enables increase of the number of membranes per unit volume so that the module can be made small in size. Moreover, the effective membrane area contributing to gas separation can be increased because the mutual contact area of membranes is decreased.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、多孔質セラミック
ス中空糸膜の緻密化方法に関する。更に詳しくは、多孔
質セラミックス中空糸膜の端部束着材接触部分を緻密化
する多孔質セラミックス中空糸膜の緻密化方法に関す
る。
TECHNICAL FIELD The present invention relates to a method for densifying a porous ceramic hollow fiber membrane. More specifically, the present invention relates to a method for densifying a porous ceramics hollow fiber membrane, which densifies the contact portion of the porous ceramics hollow fiber membrane at the end binding material.

【0002】[0002]

【従来の技術】膜形成性高分子物質の有機溶媒溶液中に
Al2O3、SiO2、ZrO2等のセラミックス粉末を高充填した
紡糸原液を用いて乾湿式紡糸し、得られた複合中空糸膜
を焼成することにより、孔径が約0.1〜6μm、外径が約
0.5〜4mmの多孔質セラミックス中空糸膜が得られること
は周知である(特公平5-66343号公報等)。
2. Description of the Related Art In a solution of a film-forming polymer substance in an organic solvent,
Al 2 O 3 , SiO 2 , ZrO 2 etc. by dry-wet spinning using a spinning stock solution highly filled with ceramic powder, and by firing the resulting composite hollow fiber membrane, the pore size is about 0.1 ~ 6 μm, the outer diameter Is about
It is well known that a porous ceramic hollow fiber membrane of 0.5 to 4 mm can be obtained (Japanese Patent Publication No. 5-66343, etc.).

【0003】この多孔質セラミックス中空糸膜は、それ
単体でも水処理などのロ過膜として用いることができる
が、これを支持体として用い、中空糸膜表面にシリカ層
などの機能性分離層を複合、形成させることにより、ガ
ス分離膜としての利用も図られる。この場合、これらの
多孔質セラミックス中空糸膜は、1本乃至数百本程度を
アルミナ、ジルコニア等からなる束着管に収容させた膜
モジュールの状態で用いられる。
This porous ceramics hollow fiber membrane can be used alone as a filtration membrane for water treatment or the like, but it is used as a support and a functional separation layer such as a silica layer is provided on the surface of the hollow fiber membrane. It can also be used as a gas separation membrane by forming a composite. In this case, these porous ceramic hollow fiber membranes are used in the state of a membrane module in which one to several hundreds of them are accommodated in a bundle tube made of alumina, zirconia or the like.

【0004】この多孔質セラミックスを支持体とする分
離膜では、支持体表面に分離機能層を形成し、特定成分
あるいはその大きさによって特定成分を透過させる機能
を有しているため、機能層を形成する領域は限定されて
おり、その他の部分は、流体を透過させないように気密
封止されている必要がある。
In the separation membrane using the porous ceramics as a support, a separation functional layer is formed on the surface of the support and has a function of transmitting a specific component or a specific component depending on its size. The area to be formed is limited, and the other portion needs to be hermetically sealed so as to prevent the fluid from passing therethrough.

【0005】そこで本出願人は先に、ガラスの微粉末を
適当な有機成分を含有する溶剤に分散させ、これを封止
部分に塗布、乾燥後、これをガラスの融点以上まで加熱
することによって得られるモジュール封止部分の気密性
ににすぐれた多孔質中空糸膜モジュールを提案している
(特開平11−226370号公報)。しかしながら、このモジュ
ールの製造方法は煩雑であり、また、ガラスが封止部分
を完全に覆うように塗布しなければならないという問題
もあった。
Therefore, the present applicant firstly dispersed fine glass powder in a solvent containing an appropriate organic component, applied this to a sealing portion, dried it, and then heated it to a temperature not lower than the melting point of glass. We propose a porous hollow fiber membrane module with excellent airtightness in the obtained module sealing part.
(JP-A-11-226370). However, the method of manufacturing this module is complicated, and there is also a problem in that glass must be applied so as to completely cover the sealed portion.

【0006】次に、本出願人はかかる問題を克服すべ
く、多孔質セラミックス、特に管状体において、封止部
分だけを焼結温度以上へ加熱することで焼結を進めて緻
密化させ、気密封止する方法を提案している(特開平11
−322456号公報)。しかしながら、この方法では上記問
題点は克服できるものの、焼結時にうねり変形が起こ
り、管状体の直線性が低下し、これにより束着管への充
填密度が低く、結果としてガス分離に寄与する有効膜面
積が小さくなるという問題があった。
Next, in order to overcome such a problem, the applicant of the present invention heats only the sealing portion of a porous ceramic, particularly a tubular body, to a temperature equal to or higher than the sintering temperature so that the sintering progresses to densify the gas. A method for tightly sealing is proposed (JP-A-11
-322456 publication). However, although the above problems can be overcome by this method, undulation deformation occurs during sintering, and the linearity of the tubular body is reduced, which reduces the packing density in the bundling tube, and consequently contributes to gas separation. There is a problem that the film area becomes small.

【0007】[0007]

【発明が解決しようとする課題】本発明の目的は、中空
糸膜の変形を伴うことがなく、ガス気密性の再現性が十
分に確保された多孔質セラミックス中空糸膜の端部緻密
化方法を提供することにある。
An object of the present invention is to provide a method for densifying an end portion of a porous ceramics hollow fiber membrane in which the reproducibility of gas tightness is sufficiently ensured without causing deformation of the hollow fiber membrane. To provide.

【0008】[0008]

【課題を解決するための手段】かかる本発明の目的は、
多孔質セラミックス中空糸膜の端部内側に緻密質セラミ
ックス管を挿入した状態で、端部束着材接触部分を加熱
焼結して緻密化処理を行う多孔質セラミックス中空糸膜
の緻密化方法によって達成される。
The object of the present invention is as follows.
With the dense ceramic tube inserted inside the end of the porous ceramic hollow fiber membrane, the end part binding material contact part is sintered by heat to perform the densification treatment. To be achieved.

【0009】[0009]

【発明の実施の形態】多孔質セラミックス中空糸膜とし
ては、焼結によって緻密化するものであれば特に限定さ
れないが、一般にAl2O3、Y2O3、MgO、SiO2、Si3N4、ZrO
2等の粉末を分散させた高分子物質の有機溶媒溶液を用
い、それを乾湿式紡糸して得られる、孔径が約0.1〜6μ
m、好ましくは約0.2〜2μmのものが用いられる。多孔質
セラミックス中空糸膜は、膜厚方向に対して一様な構造
(対象構造)でも、非対称構造でもよいが、焼結によって
緻密化させるものであるため、焼結が管全体で一様に起
こる方がよく、管の構成材質は一種類が好ましい。
BEST MODE FOR CARRYING OUT THE INVENTION The porous ceramics hollow fiber membrane is not particularly limited as long as it can be densified by sintering, but generally Al 2 O 3 , Y 2 O 3 , MgO, SiO 2 , Si 3 N 4 , ZrO
Using an organic solvent solution of a polymer substance in which powders such as 2 are dispersed, it is obtained by dry and wet spinning, and the pore size is about 0.1 ~ 6μ
m, preferably about 0.2-2 μm is used. The porous ceramic hollow fiber membrane has a uniform structure in the thickness direction.
The (target structure) or the asymmetric structure may be used, but since the structure is densified by sintering, it is preferable that the sintering occurs uniformly in the entire tube, and one kind of material is preferable for the tube.

【0010】多孔質セラミックス中空糸膜の内部に挿入
する緻密質セラミックス管の材質は、多孔質セラミック
スの焼結時の加熱に耐えうるものであれば特に限定され
るものではないが、好ましくはアルミナ、ジルコニア、
マグネシア、炭化けい素等の高温高強度セラミックスが
用いられる。ここで、緻密質とは、表面開口率が5%以
下の状態のものを指している。緻密質セラミックス管の
外径は、多孔質セラミックス中空糸膜に挿入するもので
あるため、その内径よりも小さい必要があるが、あまり
小さすぎると焼結時の変形を抑制することができない。
従って、焼結後の多孔質セラミックス中空糸膜の内径に
近いほど好ましく、一般には焼結前の多孔質セラミック
ス中空糸膜内径の60〜90%、好ましくは、70〜80%の外
径を有する緻密質セラミックス管が用いられる。また、
焼結後に多孔質セラミックス中空糸膜と緻密質セラミッ
クス管を一体化させる場合には、焼結前の多孔質セラミ
ックス中空糸膜内径の70〜95%、好ましくは80〜95%の
外径を有する緻密質セラミックスが用いられる。ただ
し、これは多孔質セラミックスの気孔率によって異なる
ものである。
The material of the dense ceramics tube inserted into the porous ceramics hollow fiber membrane is not particularly limited as long as it can withstand the heating during sintering of the porous ceramics, but is preferably alumina. , Zirconia,
High temperature and high strength ceramics such as magnesia and silicon carbide are used. Here, the term "dense material" refers to a material having a surface aperture ratio of 5% or less. Since the outer diameter of the dense ceramics tube is to be inserted into the porous ceramics hollow fiber membrane, it must be smaller than the inner diameter, but if it is too small, deformation during sintering cannot be suppressed.
Therefore, it is preferable that the inner diameter of the porous ceramics hollow fiber membrane after sintering is closer to the inner diameter of the porous ceramics hollow fiber membrane. A dense ceramic tube is used. Also,
When the porous ceramic hollow fiber membrane and the dense ceramic tube are integrated after sintering, the outer diameter of the porous ceramic hollow fiber membrane before sintering is 70 to 95%, preferably 80 to 95%. Dense ceramics are used. However, this depends on the porosity of the porous ceramics.

【0011】多孔質セラミックス中空糸膜の焼結は、加
熱によって行われる。加熱方法は温度制御が可能であれ
ば特に限定されるものではなく、電気炉、赤外炉、バー
ナー加熱など種々の加熱手段が利用できるが、必要な部
分のみを焼結させるために、加熱領域とそれ以外の部分
が近接し、加熱領域とそれ以外の部分で温度勾配が大き
いものが好ましい。例えば、電気炉を使用する場合に
は、緻密化する部分を電気炉内へ挿入し、それ以外の部
分は電気炉外へ設置するなどの方法で焼結部分を限定す
ることができる。加熱条件は、多孔質セラミックス中空
糸膜の材質や粒径によって異なるため、一概には特定で
きないが、例えばアルミナの場合には、1500〜1750℃、
好ましくは1600〜1700℃で、2〜24時間程度、好ましく
は10〜20時間程度行われる。この処理により、多孔質セ
ラミックスの接合部分は、その表面開口率が10%以下、
好ましくは5%以下となるが、接合部以外の部分につい
ては、その表面開口率はいかなる値であってもよい。
The sintering of the porous ceramic hollow fiber membrane is performed by heating. The heating method is not particularly limited as long as the temperature can be controlled, and various heating means such as an electric furnace, an infrared furnace, and a burner heating can be used, but in order to sinter only a necessary portion, the heating region It is preferable that the heating area and the other area are close to each other, and the temperature gradient is large between the heating area and the other area. For example, when an electric furnace is used, the sintered portion can be limited by a method of inserting the portion to be densified into the electric furnace and installing the other portion outside the electric furnace. Since the heating conditions differ depending on the material and particle size of the porous ceramic hollow fiber membrane, it cannot be specified unconditionally, but in the case of alumina, 1500-1750 ° C,
It is preferably carried out at 1600 to 1700 ° C. for about 2 to 24 hours, preferably about 10 to 20 hours. By this treatment, the surface opening ratio of the joined part of porous ceramics is 10% or less,
It is preferably 5% or less, but the surface aperture ratio of the portion other than the joined portion may be any value.

【0012】かかる方法を用いることにより、多孔質セ
ラミックス中空糸膜は焼結時に大きく収縮するが、この
際、内側に緻密質セラミックス管が存在することで、そ
の収縮時の変形が防止され、直線性の高い多孔質セラミ
ックス中空糸膜を作成することができる。
By using such a method, the porous ceramic hollow fiber membrane largely contracts at the time of sintering, but at this time, the presence of the dense ceramic tube prevents the deformation at the time of contraction, and the linear ceramic tube A porous ceramic hollow fiber membrane having high properties can be produced.

【0013】以上の工程を経て得られたセラミックス中
空糸膜の一例として、多孔質セラミックス中空糸膜1と
緻密質セラミックス管2が一体化した状態を図1に示
す。図に示されるように、緻密化された緻密質部分Aと
緻密化されていない多孔質部分Bおよび両者の間に存在
する気孔率傾斜部分Cからなる気孔率傾斜セラミックス
中空糸膜となる。なお、両者が一体化されていない場合
には、緻密質セラミックス管が取り外された状態とな
る。
As an example of the ceramic hollow fiber membrane obtained through the above steps, a state in which the porous ceramic hollow fiber membrane 1 and the dense ceramic tube 2 are integrated is shown in FIG. As shown in the figure, a porosity-graded ceramic hollow fiber membrane is composed of a densified dense part A, a non-densified porous part B, and a porosity-graded part C existing between them. If the two are not integrated, the dense ceramics tube is removed.

【0014】このようにして得られた気孔率傾斜セラミ
ックスは、1本乃至数百本程度、アルミナ、ジルコニ
ア、チタニア、ガラス等からなるセラミックス束着管に
全体的に収容された状態で用いられる。束着管として
は、気密性を有し、束着材で封止できるものであれば任
意のものを用いることができる。
The thus-obtained porosity-graded ceramics are used in a state where they are wholly contained in a ceramic bundle tube made of alumina, zirconia, titania, glass, etc. Any bundling tube can be used as long as it is airtight and can be sealed with a bundling material.

【0015】気孔率傾斜セラミックスの束着管への収容
方法としては、気密性を保持できるものであれば特に限
定されないが、例えば、中空糸膜を束着材(シリカ、ア
ルミナなどのセラミックスを主成分とする無機系接着
剤)によって固定後、両端部をガラス材により被覆する
方法や、中空糸膜群端部を貫通孔を有する平板を介して
束着する方法、ロウ材を用いて中空糸膜を束着管にロウ
付けする方法などが用いられる。
The method for accommodating the porosity-graded ceramics in the bundling tube is not particularly limited as long as it can maintain the airtightness. After fixing with an inorganic adhesive as a component), a method of coating both ends with a glass material, a method of bundling the ends of the hollow fiber membrane group through a flat plate having a through hole, a hollow fiber using a brazing material For example, a method of brazing the film to the bundling tube is used.

【0016】[0016]

【発明の効果】本発明方法により、中空糸膜の変形を伴
うことがなく、ガス気密性の再現性が十分に確保された
多孔質セラミックス中空糸膜の端部緻密化方法が提供さ
れ、この方法は製造時間の短縮、生産性の向上につなが
る。また、多孔質セラミックス中空糸膜と緻密質セラミ
ックス管を一体化した場合には、一体化部分の強度が向
上するとともに、中空糸膜の破損を低減することができ
る。さらに、この方法により製造された中空糸膜を用い
た中空糸膜モジュールは、単位体積あたりの膜充填本数
を増やすことが可能であるため小型化が可能であり、さ
らには膜同士の接触面積が少なくなることからガス分離
に寄与する有効膜面積を大きくすることが可能である。
According to the method of the present invention, there is provided a method for densifying an end portion of a porous ceramic hollow fiber membrane in which reproducibility of gas tightness is sufficiently ensured without causing deformation of the hollow fiber membrane. The method leads to reduction of manufacturing time and improvement of productivity. In addition, when the porous ceramic hollow fiber membrane and the dense ceramic tube are integrated, the strength of the integrated portion is improved and the damage of the hollow fiber membrane can be reduced. Furthermore, the hollow fiber membrane module using the hollow fiber membrane produced by this method can be downsized because the number of membranes packed per unit volume can be increased, and further, the contact area between the membranes can be reduced. Since the amount decreases, it is possible to increase the effective membrane area that contributes to gas separation.

【0017】[0017]

【実施例】次に、実施例について本発明を説明する。EXAMPLES The present invention will now be described with reference to examples.

【0018】実施例 多孔質アルミナ中空糸膜(外径2.0mm、内径1.4mm、長さ3
00mm、平均細孔径0.2μm、気孔率44%)に、緻密質アル
ミナ管(外径1.3mm、内径0.7mm、長さ100mm)を挿入し、
かかる部分を電気炉内へ設置し、その他の部分は電気炉
外へ設置された状態で、電気炉の内部温度を1650℃に制
御して、そのまま12時間焼成した。
Example Porous alumina hollow fiber membrane (outer diameter 2.0 mm, inner diameter 1.4 mm, length 3
00mm, average pore size 0.2μm, porosity 44%), insert a dense alumina tube (outer diameter 1.3mm, inner diameter 0.7mm, length 100mm),
With such a part installed inside the electric furnace and the other parts installed outside the electric furnace, the internal temperature of the electric furnace was controlled to 1650 ° C., and the baking was continued for 12 hours.

【0019】焼成後には、緻密質アルミナ管と多孔質ア
ルミナ中空糸膜は、緻密質のアルミナ管を抜き取ること
はできないほど一体化していた。一方、焼成の前後で、
多孔質アルミナ中空糸膜の直線性は変化していなかっ
た。
After firing, the dense alumina tube and the porous alumina hollow fiber membrane were so integrated that the dense alumina tube could not be extracted. On the other hand, before and after firing,
The linearity of the porous alumina hollow fiber membrane did not change.

【0020】焼結部分のガスリーク性能を測定するため
に、電気炉内に設置して焼結させた部分を切り出しその
部分のヘリウムリーク量を測定した結果、リーク量は1
×10- 10Pa・m3/s未満であり、高いガス気密性を有して
いた。一方、焼成後の焼結部分の気孔率(写真撮影によ
り直接計測)が4%であったのに対し、電気炉外に設置し
ていた部分は、気孔率44%のままであった。
In order to measure the gas leak performance of the sintered portion, the portion that was placed in an electric furnace and sintered was cut out, and the helium leak amount was measured.
× 10 - less than 10 Pa · m 3 / s, had a high gas tightness. On the other hand, the porosity of the sintered portion after firing (direct measurement by photography) was 4%, whereas the porosity of the portion installed outside the electric furnace remained 44%.

【0021】また、得られたアルミナ中空糸膜を長さが
240mmになるように両端部を切断してアルミナ製の束着
管(外径30mm、内径25mm、長さ250mm)に設置し、束着管
の両端面をフィルムで封止して、一方側ずつ70℃に加熱
融解させたn-テトラデシルアルコールを流し込み、冷
却、固化させた後、やはり一方ずつ無機系接着剤(セラ
マボンド569)よりなる束着材を充填し、常温下で3日間
乾燥させた。その後、封止フィルムを剥し、束着部を70
℃に加熱してn-テトラデシルアルコールを端部から溶融
除去し、さらに有機溶媒(n-ヘキサン)を用いて洗浄した
後、無機系接着剤の硬化を100℃で2時間行った。硬化終
了後、束着材端面にペースト状ガラス材(アレムコ プロ
ダクツ製品アレムコシール617)を塗布し、常温で乾燥さ
せた後900℃で30分間の加熱処理を行ない、束着材封止
端面がガラス材で被覆された膜モジュールを作製した。
この際アルミナ中空糸膜は、30本まで設置することが可
能であった。
The length of the obtained alumina hollow fiber membrane is
Cut both ends to 240 mm and set it on an alumina bundling tube (outer diameter 30 mm, inner diameter 25 mm, length 250 mm), seal both end surfaces of the bundling tube with film, one side at a time After pouring n-tetradecyl alcohol heated and melted at 70 ° C., cooling and solidifying, a bunching material composed of an inorganic adhesive (Ceramabond 569) was also filled one by one and dried at room temperature for 3 days. . After that, peel off the sealing film and remove the
The n-tetradecyl alcohol was melted and removed from the end portion by heating at 0 ° C, and further washed with an organic solvent (n-hexane), and then the inorganic adhesive was cured at 100 ° C for 2 hours. After curing, apply pasty glass material (Aremco Products Alemco Seal 617) on the end surface of the binding material, dry it at room temperature, and heat it at 900 ° C for 30 minutes. A membrane module coated with was prepared.
At this time, it was possible to install up to 30 alumina hollow fiber membranes.

【0022】比較例 緻密質アルミナ管を使用しなかったこと以外は、実施例
と同様な方法で焼成を行った。その結果、緻密化部分の
ヘリウムリーク量は1×10-10Pa・m3/s未満であり、高い
ガス気密性を有していたが、緻密化部分で湾曲し、直線
性が低下した。
Comparative Example Firing was carried out in the same manner as in the example except that a dense alumina tube was not used. As a result, the amount of helium leak in the densified portion was less than 1 × 10 -10 Pa · m 3 / s, and although the gas tightness was high, the densified portion was curved and the linearity was deteriorated.

【0023】そのため、得られた気孔率傾斜アルミナ中
空糸膜をアルミナ製の束着管(外径30mm、内径25mm、長
さ250mm)に充填して膜モジュールを作成したところ、20
本しか設置することができなかった。また、束ねた気孔
率傾斜緻密アルミナ中空糸膜同士が部分的に接触してい
た。
Therefore, the obtained alumina hollow fiber membrane having a porosity gradient was packed into an alumina bundle tube (outer diameter 30 mm, inner diameter 25 mm, length 250 mm) to prepare a membrane module.
I could only install books. In addition, the bundled dense porosity alumina hollow fiber membranes were partially in contact with each other.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明方法で用いられる緻密質セラミックス管
と一体化した気孔率傾斜セラミックス中空糸膜の一例で
ある。
FIG. 1 is an example of a porosity-graded ceramic hollow fiber membrane integrated with a dense ceramic tube used in the method of the present invention.

【符号の説明】[Explanation of symbols]

1 多孔質セラミックス中空糸膜 2 緻密質セラミックス管 A 中空糸膜の緻密質部分 B 中空糸膜の緻密化されていない多孔質部分 C 中空糸膜の気孔率傾斜部分 1 Porous ceramic hollow fiber membrane 2 Dense ceramic tube A dense part of hollow fiber membrane B Non-densified porous part of hollow fiber membrane C Hollow fiber membrane porosity gradient part

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 多孔質セラミックス中空糸膜の端部内側
に緻密質セラミックス管を挿入し、端部束着材接触部分
を加熱焼結して緻密化処理を行うことを特徴とする多孔
質セラミックス中空糸膜の緻密化方法。
1. A porous ceramics characterized in that a dense ceramics tube is inserted inside an end of a porous ceramics hollow fiber membrane, and a contacting portion of the end binding material is heated and sintered to carry out a densification treatment. Hollow fiber membrane densification method.
【請求項2】 緻密化処理後に多孔質セラミックス中空
糸膜から緻密質セラミックス管が取り外されていること
を特徴とする請求項1記載の多孔質セラミックス中空糸
膜の緻密化方法。
2. The method for densifying a porous ceramic hollow fiber membrane according to claim 1, wherein the dense ceramic tube is removed from the porous ceramic hollow fiber membrane after the densification treatment.
【請求項3】 緻密化処理後に多孔質セラミックス中空
糸膜と緻密質セラミックス管が一体化していることを特
徴とする請求項1記載の多孔質セラミックス中空糸膜の
緻密化方法。
3. The method for densifying a porous ceramic hollow fiber membrane according to claim 1, wherein the porous ceramic hollow fiber membrane and the dense ceramic tube are integrated after the densification treatment.
【請求項4】 請求項1乃至3記載のいずれかの方法に
より得られた端部緻密化多孔質セラミックス中空糸膜が
用いられた多孔質セラミックス中空糸膜モジュール。
4. A porous ceramics hollow fiber membrane module using the end densified porous ceramics hollow fiber membrane obtained by the method according to any one of claims 1 to 3.
JP2001249537A 2001-08-20 2001-08-20 Method for making dense porous ceramic hollow fiber membrane Withdrawn JP2003053166A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001249537A JP2003053166A (en) 2001-08-20 2001-08-20 Method for making dense porous ceramic hollow fiber membrane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001249537A JP2003053166A (en) 2001-08-20 2001-08-20 Method for making dense porous ceramic hollow fiber membrane

Publications (1)

Publication Number Publication Date
JP2003053166A true JP2003053166A (en) 2003-02-25

Family

ID=19078525

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001249537A Withdrawn JP2003053166A (en) 2001-08-20 2001-08-20 Method for making dense porous ceramic hollow fiber membrane

Country Status (1)

Country Link
JP (1) JP2003053166A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005305298A (en) * 2004-04-21 2005-11-04 Ishikawajima Harima Heavy Ind Co Ltd Hydrogen-separating sheet, method for manufacturing the sheet, hydrogen-separating membrane, method for manufacturing the membrane and apparatus and method for powder rolling
CN104128100A (en) * 2014-06-30 2014-11-05 淮阴师范学院 Nano attapulgite based hollow fiber microfiltration membrane and preparation method thereof
WO2016184776A1 (en) 2015-05-19 2016-11-24 Basf Se Gas-tight, heat-permeable multilayer ceramic composite tube
WO2020187607A1 (en) * 2019-03-15 2020-09-24 Basf Se Gas-tight, heat-permeable multilayer ceramic composite tube
CN112409022A (en) * 2020-11-20 2021-02-26 武汉科技大学 Carbon nanotube/fiber modified self-heating porous hydrophobic/oleophylic ceramic and preparation method thereof

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005305298A (en) * 2004-04-21 2005-11-04 Ishikawajima Harima Heavy Ind Co Ltd Hydrogen-separating sheet, method for manufacturing the sheet, hydrogen-separating membrane, method for manufacturing the membrane and apparatus and method for powder rolling
CN104128100A (en) * 2014-06-30 2014-11-05 淮阴师范学院 Nano attapulgite based hollow fiber microfiltration membrane and preparation method thereof
WO2016184776A1 (en) 2015-05-19 2016-11-24 Basf Se Gas-tight, heat-permeable multilayer ceramic composite tube
KR20180009764A (en) * 2015-05-19 2018-01-29 바스프 에스이 Airtight heat-permeable multi-layer ceramic composite tube
CN107683384A (en) * 2015-05-19 2018-02-09 巴斯夫欧洲公司 Airtight, heat conduction multi-layer ceramics multiple tube
US20180134629A1 (en) * 2015-05-19 2018-05-17 Basf Se Gas-tight, heat-permeable multilayer ceramic composite tube
RU2723326C2 (en) * 2015-05-19 2020-06-09 Басф Се Gas-tight, heat-permeable, ceramic, multilayer composite pipe
US10865151B2 (en) 2015-05-19 2020-12-15 Basf Se Gas-tight, heat-permeable multilayer ceramic composite tube
KR102521332B1 (en) * 2015-05-19 2023-04-13 바스프 에스이 Airtight heat permeable multi-layer ceramic composite tube
WO2020187607A1 (en) * 2019-03-15 2020-09-24 Basf Se Gas-tight, heat-permeable multilayer ceramic composite tube
CN113573891A (en) * 2019-03-15 2021-10-29 巴斯夫欧洲公司 Air-tight and heat-permeable multilayer ceramic composite pipe
CN112409022A (en) * 2020-11-20 2021-02-26 武汉科技大学 Carbon nanotube/fiber modified self-heating porous hydrophobic/oleophylic ceramic and preparation method thereof

Similar Documents

Publication Publication Date Title
US6716275B1 (en) Gas impermeable glaze for sealing a porous ceramic surface
CN102575542B (en) Mounting mat for exhaust gas treatment device
US20130031952A1 (en) Gas sensor with thermal shock protection
US6174490B1 (en) Method for producing an exchanger
EP2011778B1 (en) Composite ceramic body, method of manufacturing the same and ceramic filter assembly
JPH1136853A (en) Coated catalyst converter base and mounting of the same
JPH1087376A (en) Method for bonding silicon carbide parts
EP2020675A2 (en) HID lamp with frit seal thermal control
WO2020145366A1 (en) Composite member
JP4194905B2 (en) Support structure for porous cylinder and fixing method for support member
JP2003053166A (en) Method for making dense porous ceramic hollow fiber membrane
JP3801038B2 (en) Hollow fiber membrane module
US5526984A (en) Hydrogen torch having concentric tubes and reverse ball joint connection
CZ95797A3 (en) High-pressure discharge lamp and process for producing thereof
US6387318B1 (en) Glass-ceramic pressure sensor support base and its fabrication
JPH11226370A (en) Porous ceramic type hollow fiber membrane module
JP2000277013A (en) Manufacture of ceramic arc tube for metal halide lamp
JP2003533344A (en) Separation module and manufacturing method thereof
JP2000312811A (en) Gas separation module
US7960069B2 (en) Composite insulation assembly for a fuel cell
US6712131B1 (en) Method for producing an exchanger and exchanger
JP4013794B2 (en) Porous ceramic hollow fiber membrane module
JP4961641B2 (en) Ceramic hollow fiber membrane module
JP4857538B2 (en) Hollow fiber membrane module
JP2001353426A (en) Method for manufacturing hollow fiber membrane module

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080617

A761 Written withdrawal of application

Free format text: JAPANESE INTERMEDIATE CODE: A761

Effective date: 20090226