JPS63178803A - Sheet compound film - Google Patents

Sheet compound film

Info

Publication number
JPS63178803A
JPS63178803A JP1099887A JP1099887A JPS63178803A JP S63178803 A JPS63178803 A JP S63178803A JP 1099887 A JP1099887 A JP 1099887A JP 1099887 A JP1099887 A JP 1099887A JP S63178803 A JPS63178803 A JP S63178803A
Authority
JP
Japan
Prior art keywords
sheet
base film
permeate
film
membrane
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP1099887A
Other languages
Japanese (ja)
Other versions
JP2534050B2 (en
Inventor
Masaya Sakano
坂野 正弥
Yoshiyasu Kamiyama
神山 義康
Keisuke Nakagome
中込 敬祐
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.)
Nitto Denko Corp
Original Assignee
Nitto Electric Industrial Co Ltd
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 Nitto Electric Industrial Co Ltd filed Critical Nitto Electric Industrial Co Ltd
Priority to JP62010998A priority Critical patent/JP2534050B2/en
Publication of JPS63178803A publication Critical patent/JPS63178803A/en
Application granted granted Critical
Publication of JP2534050B2 publication Critical patent/JP2534050B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D69/00Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor

Abstract

PURPOSE:To obtain sheet compound film having in itself a duct for permeate and being able to increase the film area per unit volume of a module by forming on a porous base film a duct for permeate extending from one end of the base film to the other end continuously. CONSTITUTION:Back-up sheet having protruded of a predetermined size and pitch and corresponding to the grooves to be formed on the rear side of porous base film is quided to a back-up roll, and resin solution for forming the base film 2 is coated with a roll coater, etc., on the sheet. After forming film by conducting the sheet to a coagulating bath, obtd. base film 2 is stripped off the back-up sheet. A skin layer 3 is formed on the surface of the base film 2, thus sheet compound film having groove-shaped ducts 4 for permeate having openings formed on the base film from one end to the other end of the base film 2 is obtained. If a spiral module, etc., is prepd. using the above described compound film, no more spacers for permeate is necessary.

Description

【発明の詳細な説明】 産業上の利用分野 本発明はシート状複合膜に関し、詳しくは、それ自体が
透過液流路を有し、モジュール化する際に、例えば、ス
ペーサのような特別な透過液用流路材を必要としないシ
ート状複合膜に関する。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a sheet-like composite membrane, in particular, which has its own permeate flow path, and when modularized, has special permeate channels such as spacers. The present invention relates to a sheet-like composite membrane that does not require a liquid channel material.

従来q汰徘 既によく知られているように、シート状複合膜は、シー
ト状の多孔質基材股上に分離機能を有する緻密で薄いス
キン層が形成されてなり、一般に、モジュール化されて
用いられる。このようなモジュールにおいては、例えば
、合成繊維織布に樹脂を含浸させたシートからなるスペ
ーサを透過液流路としてシート状複合膜に沿わせ、複合
膜を透過した透過液をこのスペーサに集め、モジュール
外に導いている。かかるスペーサは、膜処理する液体の
性状によっては、耐薬品性、耐久性に劣り、また、モジ
ュール価格を高くするうえに、モジュールにおける単位
容積当りの膜面積を減少させることとともなる。
As is already well known, sheet-like composite membranes consist of a dense, thin skin layer with a separation function formed on a sheet-like porous base material, and are generally used in modular form. It will be done. In such a module, for example, a spacer made of a sheet of synthetic fiber woven fabric impregnated with resin is placed along the sheet-like composite membrane as a permeate flow path, and the permeate that has permeated through the composite membrane is collected in this spacer. Leading out of the module. Such a spacer has poor chemical resistance and durability depending on the properties of the liquid to be membrane-treated, and not only increases the module price but also reduces the membrane area per unit volume of the module.

■が解ゞ しようとする問題点 本発明は、シート状複合膜をモジュール化する際の上記
した問題を解決するためになされたものであって、それ
自体が透過液流路を有し、従って、モジュールにおける
単位容積当りの膜面積を太きくすることができるシート
状複合膜を提供することを目的とする。
Problems to be Solved The present invention was made in order to solve the above-mentioned problems when modularizing sheet-like composite membranes. An object of the present invention is to provide a sheet-like composite membrane that can increase the membrane area per unit volume in a module.

問題点を解決するための手段 本発明によるシート状複合膜は、多孔質基材膜上に分離
機能を有するスキン層を備えたシート状複合膜において
、上記多孔質基材膜に一端から他端に連続して延びる透
過液流路を形成してなることを特徴とする。
Means for Solving the Problems The sheet-like composite membrane according to the present invention is a sheet-like composite membrane having a skin layer having a separation function on a porous base membrane. It is characterized by forming a permeate flow path that extends continuously.

以下に図面に基づいて本発明を説明する。The present invention will be explained below based on the drawings.

第1図は、本発明によるシート状複合膜の一実施例を示
し、シート状複合膜1は、シート状多孔質基材膜2とそ
の上に形成された分離機能を有する緻密なスキン層3と
からなり、上記多孔質基材膜の裏面に一端から他端まで
開口した溝状に透過液流路4が形成されている。この透
過液流路の断面形状や幅、透過液流路間の間隔、即ち、
ピッチは、複合膜を透過する透過液流束や複合膜に供給
される処理液の圧力等に応じて適宜に選択される。
FIG. 1 shows an embodiment of a sheet-like composite membrane according to the present invention. A sheet-like composite membrane 1 includes a sheet-like porous base membrane 2 and a dense skin layer 3 having a separation function formed thereon. A permeate flow path 4 is formed in the shape of a groove opening from one end to the other end on the back surface of the porous base membrane. The cross-sectional shape and width of this permeate flow path, the spacing between the permeate flow paths, i.e.
The pitch is appropriately selected depending on the flux of permeate passing through the composite membrane, the pressure of the processing liquid supplied to the composite membrane, and the like.

例えば、逆浸透用複合膜の場合であれば、特に限定され
るものではないが、例えば、溝の深さは50〜500μ
m、溝の幅及びピッチはそれぞれ100〜3000μm
程度が適当である。
For example, in the case of a composite membrane for reverse osmosis, the groove depth may be 50 to 500 μm, although it is not particularly limited.
m, groove width and pitch are each 100 to 3000 μm
The degree is appropriate.

第2図は、本発明によるシート状複合膜の別の実施例を
示し、シート状多孔質基材膜2とスキン層3とからなる
シート状複合膜lにおいて、上記多孔質基材膜の内部を
一端から他端まで連通ずる貫通孔として透過液流路5が
形成されている。
FIG. 2 shows another embodiment of the sheet-like composite membrane according to the present invention. A permeate flow path 5 is formed as a through hole communicating from one end to the other end.

また、第3図は、更に別の実施例を示し、シート状複合
膜1は、多孔質基材膜2の両面にスキン層3及び3”を
存し、透過液流路6は、多孔質基材膜の内部に一端から
他端まで連通ずる貫通孔として形成されている。
Further, FIG. 3 shows yet another embodiment, in which the sheet-like composite membrane 1 has skin layers 3 and 3'' on both sides of the porous base membrane 2, and the permeate flow path 6 has a porous base membrane 2. A through hole is formed inside the base film to communicate from one end to the other end.

第2図及び第3図に示す複合膜においても、透過液流路
の断面形状や幅、透過液流路間のピッチは、複合膜を透
過する透過液流束や複合膜に供給される処理液の圧力等
に応じて適宜に選択される。
In the composite membranes shown in Figures 2 and 3 as well, the cross-sectional shape and width of the permeate channels and the pitch between the permeate channels are determined by the flux of permeate passing through the composite membrane and the treatment supplied to the composite membrane. It is selected appropriately depending on the pressure of the liquid, etc.

上述したような本発明によるシート状複合膜を製造する
ための方法は、何ら限定されるものではないが、以下に
その一例について説明する。
Although the method for manufacturing the sheet-like composite membrane according to the present invention as described above is not limited in any way, one example thereof will be described below.

例えば、裏面に透過液流路としての溝を有する多孔質基
材膜を得るには、第4図及び第5図に示すように、基材
膜の裏面に形成すべき所定の大きさ及びピッチの溝に対
応する突条7を有するバラ  □クアップシート8をバ
ックアップロール9に導き、バックアップシート8上に
基材膜を形成するための樹脂溶液を例えばロールコータ
−10にて適宜厚みに塗布し、凝固槽1)に導いて、常
法に従って製膜した後、得られた基材膜12を上記バッ
クアップシート8から剥離すればよい。このような基材
膜の表面にスキン層を形成すれば、第1図に示したよう
なシート状複合膜を得ることができる。
For example, in order to obtain a porous base membrane having grooves as permeate flow paths on the back surface, as shown in FIGS. □The backup sheet 8 is guided to a backup roll 9, and a resin solution for forming a base film is coated on the backup sheet 8 to an appropriate thickness using, for example, a roll coater 10. , to a coagulation tank 1) and form a film according to a conventional method, and then the obtained base film 12 may be peeled off from the backup sheet 8. By forming a skin layer on the surface of such a base film, a sheet-like composite film as shown in FIG. 1 can be obtained.

また、透過液流路としての貫通孔を内部に有する多孔質
基材膜を得るには、第6図に示すように、平坦なバック
アップシート13上に基材膜を形成するための樹脂溶液
14を例えばロールコータ−10にて塗布する際に、所
定の径を有するノズル15をバックアップシート13の
幅方向に所定間隔にて配列させ、上記ノズルから樹脂溶
液中に一定の流量にて水や空気を吐出させ、内部に貫通
孔16を有する樹脂溶液の塗布層17を形成させ、前記
のように、常法に従って製膜した後、上記バックアップ
シート13を剥離すればよい。
In addition, in order to obtain a porous base film having a through hole therein as a permeate flow path, as shown in FIG. For example, when coating with a roll coater 10, nozzles 15 having a predetermined diameter are arranged at predetermined intervals in the width direction of the backup sheet 13, and water or air is injected into the resin solution from the nozzles at a constant flow rate. is discharged to form a resin solution coating layer 17 having through holes 16 therein, and after forming a film according to a conventional method as described above, the backup sheet 13 may be peeled off.

第7図は、第1図に示したシート状複合膜1を用いて製
作したスパイラルモジュールの一例を示す。集水管18
は、壁体に軸方向に多数の溝19を有し、それら溝の底
部に壁体を貫通する多数の貫通孔を集水孔20として有
する円筒状の部材からなる。透過液流路としての溝4を
裏面に有するシート状複合膜1は、例えば、そのスキン
層側、即ち、表面側を原液用スペーサ21に対面するよ
うにしてスペーサに沿って折り曲げられてユニットが形
成され、これらユニットの複数が透過液流路としての溝
4が相互に対面するようにして、上記集水管18の周囲
に巻かれて、モジュールが形成されている。複合膜の端
部は、接着剤22にて封止されている。
FIG. 7 shows an example of a spiral module manufactured using the sheet-like composite membrane 1 shown in FIG. Water collection pipe 18
is a cylindrical member having a large number of grooves 19 in the axial direction in the wall, and a large number of through holes penetrating the wall as water collecting holes 20 at the bottoms of the grooves. The sheet-like composite membrane 1 having grooves 4 as permeate flow paths on the back side is, for example, folded along the spacer so that its skin layer side, that is, the front side faces the stock solution spacer 21, and the unit is folded. A module is formed by winding a plurality of these units around the water collecting pipe 18 so that the grooves 4 serving as permeate flow paths face each other. The ends of the composite membrane are sealed with adhesive 22.

従って、かかるモジュールを適宜の円筒状のカバー内に
収容し、原液スペーサに原液を供給する接続を行なうと
共に、集水管をカバー外に導くことによって膜装置を構
成することができる。この装置においては、原液スペー
サに供給され、スキン層を経て複合膜を透過しした透過
液は、複合膜裏面の透過液流路としての溝4がら集水管
18に集められる。
Therefore, a membrane device can be constructed by accommodating such a module in a suitable cylindrical cover, making a connection to supply the stock solution to the stock solution spacer, and guiding the water collection pipe outside the cover. In this device, the permeate that is supplied to the stock solution spacer and permeates through the composite membrane via the skin layer is collected in the water collection pipe 18 through the groove 4 that serves as a permeate flow path on the back surface of the composite membrane.

かかる膜装置によれば、複合膜自体が透過液流路を有し
ているので、従来の膜モジュールのように、透過液流路
のためのスペーサなしにて、透過液を集水管に効率よく
導くことができ、かくして、装置化が簡単であり、更に
、装置の単位体積当たりの膜面積を大きくすることがで
きる。
According to this membrane device, since the composite membrane itself has a permeate flow path, the permeate can be efficiently transferred to the water collection pipe without the need for a spacer for the permeate flow path as in conventional membrane modules. Therefore, it is easy to implement the device, and furthermore, the membrane area per unit volume of the device can be increased.

光匪皇夙来 以上のように、本発明のシート状複合膜によれば、複合
膜自体が透過液流路を有しているので、かかる複合膜を
モジュール化する際に、従来の複合膜のように透過液流
路としてのスペーサ等を必要とせず、モジュール化が簡
単であるうえに、モジュールの単位容積当りの膜面積を
大きくすることができ、延いては処理効率の高いモジュ
ールを得ることができる。
As described above, according to the sheet-like composite membrane of the present invention, since the composite membrane itself has a permeate flow path, when modularizing such a composite membrane, it is difficult to use conventional composite membranes. As shown in the figure, there is no need for a spacer as a permeate flow path, making it easy to modularize, and the membrane area per unit volume of the module can be increased, resulting in a module with high processing efficiency. be able to.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、本発明によるシート状複合膜の一実施例の横
断面図、第2図及び第3図は、それぞれ更に別の実施例
を示す横断面図、第4図は、裏面に透過液流路としての
溝を有する多孔質基材膜を得るための装置構成の一例を
示す図、第5図はバックアップシートを示す断面図、第
6図は、透過液流路としての貫通孔を内部に有する多孔
質基材膜を得るための装置構成の一例を示す図、第7図
は、裏面に透過液流路としての溝を有する本発明による
複合膜を用いたモジュールの一例を示す要部断面図であ
る。 1・・・シート状複合膜、2・・・シート状多孔質基材
膜、3及び3゛・・・スキン層、4.5及び6・・・透
過液流路、7・・・突状、8・・・バックアップシート
、9・・・バックアップロール、10・・・ロールコー
タ−1)1・・・凝固槽、12・・・多孔質膜基材、1
3・・・バックアップシート、14・・・樹脂溶液、1
5・・・ノズル、16・・・貫通孔、18・・・集水管
、20・・・集水孔、21・・・原液用スペーサ、22
・・・接着剤。 第6図 第7図
FIG. 1 is a cross-sectional view of one embodiment of a sheet-like composite membrane according to the present invention, FIGS. 2 and 3 are cross-sectional views showing further embodiments, and FIG. A diagram showing an example of an apparatus configuration for obtaining a porous base material membrane having grooves as liquid flow paths, FIG. 5 is a cross-sectional view showing a backup sheet, and FIG. FIG. 7 is a diagram illustrating an example of the configuration of an apparatus for obtaining a porous base membrane inside, and FIG. FIG. DESCRIPTION OF SYMBOLS 1... Sheet-like composite membrane, 2... Sheet-like porous base membrane, 3 and 3゛... Skin layer, 4.5 and 6... Permeate flow path, 7... Protruding shape , 8... Backup sheet, 9... Backup roll, 10... Roll coater-1) 1... Coagulation tank, 12... Porous membrane base material, 1
3... Backup sheet, 14... Resin solution, 1
5... Nozzle, 16... Through hole, 18... Water collection pipe, 20... Water collection hole, 21... Spacer for stock solution, 22
···glue. Figure 6 Figure 7

Claims (3)

【特許請求の範囲】[Claims] (1)多孔質基材膜上に分離機能を有するスキン層を備
えたシート状複合膜において、上記多孔質基材膜に一端
から他端に連続して延びる透過液流路を形成してなるこ
とを特徴とするシート状複合膜。
(1) A sheet-like composite membrane comprising a skin layer having a separation function on a porous base membrane, in which a permeate flow path extending continuously from one end to the other end is formed in the porous base membrane. A sheet-like composite membrane characterized by:
(2)透過液流路が多孔質基材膜の裏面に溝として形成
されていることを特徴とする特許請求の範囲第1項記載
のシート状複合膜。
(2) The sheet-like composite membrane according to claim 1, wherein the permeate flow path is formed as a groove on the back surface of the porous base membrane.
(3)透過液流路が多孔質基材膜の内部に貫通孔として
形成されていることを特徴とする特許請求の範囲第1項
記載のシート状複合膜。
(3) The sheet-like composite membrane according to claim 1, wherein the permeate flow path is formed as a through hole inside the porous base membrane.
JP62010998A 1987-01-19 1987-01-19 Sheet-like composite membrane Expired - Fee Related JP2534050B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62010998A JP2534050B2 (en) 1987-01-19 1987-01-19 Sheet-like composite membrane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62010998A JP2534050B2 (en) 1987-01-19 1987-01-19 Sheet-like composite membrane

Publications (2)

Publication Number Publication Date
JPS63178803A true JPS63178803A (en) 1988-07-22
JP2534050B2 JP2534050B2 (en) 1996-09-11

Family

ID=11765804

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62010998A Expired - Fee Related JP2534050B2 (en) 1987-01-19 1987-01-19 Sheet-like composite membrane

Country Status (1)

Country Link
JP (1) JP2534050B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013540589A (en) * 2010-10-29 2013-11-07 ゼネラル・エレクトリック・カンパニイ Spiral membrane element production water pipe with external flow channel
JP2015110213A (en) * 2013-12-04 2015-06-18 ポール・コーポレーションPallCorporation Membrane with surface channels
CN106823860A (en) * 2017-03-03 2017-06-13 河北工业大学 A kind of preparation method of ethylene-vinyl alcohol copolymer highly-hydrophilic milipore filter
CN106861448A (en) * 2017-03-03 2017-06-20 河北工业大学 A kind of preparation method of ethylene-vinyl alcohol copolymer highly-hydrophilic milipore filter
JP2019500213A (en) * 2015-12-24 2019-01-10 ビーエル テクノロジーズ、インコーポレイテッド Filter element and manufacturing method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59102402A (en) * 1982-10-12 1984-06-13 ダブリユ・エル・ゴア・アンド・アソシエイツ,インコ−ポレイテイド Apparatus for separating hydrogen sulfide from gaseous mixture

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59102402A (en) * 1982-10-12 1984-06-13 ダブリユ・エル・ゴア・アンド・アソシエイツ,インコ−ポレイテイド Apparatus for separating hydrogen sulfide from gaseous mixture

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013540589A (en) * 2010-10-29 2013-11-07 ゼネラル・エレクトリック・カンパニイ Spiral membrane element production water pipe with external flow channel
JP2015110213A (en) * 2013-12-04 2015-06-18 ポール・コーポレーションPallCorporation Membrane with surface channels
EP2889076B1 (en) * 2013-12-04 2021-04-07 Pall Corporation Membrane with surface channels
JP2019500213A (en) * 2015-12-24 2019-01-10 ビーエル テクノロジーズ、インコーポレイテッド Filter element and manufacturing method thereof
CN106823860A (en) * 2017-03-03 2017-06-13 河北工业大学 A kind of preparation method of ethylene-vinyl alcohol copolymer highly-hydrophilic milipore filter
CN106861448A (en) * 2017-03-03 2017-06-20 河北工业大学 A kind of preparation method of ethylene-vinyl alcohol copolymer highly-hydrophilic milipore filter
CN106823860B (en) * 2017-03-03 2019-02-22 河北工业大学 A kind of preparation method of ethylene-vinyl alcohol copolymer highly-hydrophilic ultrafiltration membrane

Also Published As

Publication number Publication date
JP2534050B2 (en) 1996-09-11

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