JPS5841884B2 - Continuous production method of external pressure type tubular membrane - Google Patents
Continuous production method of external pressure type tubular membraneInfo
- Publication number
- JPS5841884B2 JPS5841884B2 JP57120659A JP12065982A JPS5841884B2 JP S5841884 B2 JPS5841884 B2 JP S5841884B2 JP 57120659 A JP57120659 A JP 57120659A JP 12065982 A JP12065982 A JP 12065982A JP S5841884 B2 JPS5841884 B2 JP S5841884B2
- Authority
- JP
- Japan
- Prior art keywords
- membrane
- support
- membrane support
- die
- supports
- 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.)
- Expired
Links
- 239000012528 membrane Substances 0.000 title claims description 58
- 238000000034 method Methods 0.000 title claims description 8
- 238000010924 continuous production Methods 0.000 title 1
- 238000005266 casting Methods 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 22
- 239000005457 ice water Substances 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000005273 aeration Methods 0.000 claims description 5
- 239000010408 film Substances 0.000 description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910001873 dinitrogen Inorganic materials 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229920002301 cellulose acetate Polymers 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/10—Supported membranes; Membrane supports
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
Description
【発明の詳細な説明】
この発明は逆浸透装置および限外濾過装置に使用される
外圧式管状膜の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing an external pressure type tubular membrane used in reverse osmosis devices and ultrafiltration devices.
管状支持体の外表面に薄い膜を形成させる場合、支持体
を垂直に保持し液状膜原料たるキャスト液を塗布したの
ち曝気、ゲル化の一連工程を定速度で通過させることが
好ましい。When forming a thin film on the outer surface of a tubular support, it is preferable to hold the support vertically, apply a casting liquid as a liquid film raw material, and then pass through a series of steps of aeration and gelation at a constant rate.
従来の製膜方法は、特公昭４９−４８０７４号公報に示
されているように、ワイヤーにより膜支持体を懸吊し、
この支持体を一本づつ製膜するバッチ方式であり、その
概念図は第１図のとおりである。In the conventional film forming method, as shown in Japanese Patent Publication No. 49-48074, a membrane support is suspended by a wire,
This is a batch method in which the support is formed into a film one by one, and its conceptual diagram is shown in FIG.
１本の膜支持体１は糸２により懸垂され糸２は電動機３
の軸に巻かれているため電動機３の作動により膜支持体
１は降下し、ダイ４を通過してキャスト液が塗布され、
ダイ４通過後曝気され、更に氷水槽５に入りゲル化され
る。One membrane support 1 is suspended by a thread 2, and the thread 2 is connected to an electric motor 3.
The membrane support 1 is lowered by the operation of the electric motor 3, passes through the die 4, and is coated with the casting liquid.
After passing through the die 4, it is aerated, and then enters an ice bath 5 to be gelled.
従来方式は装置の構成が簡易であり、また固定されたダ
イの中心を通過する際、膜支持体の振れが自由であるた
め高粘度のキャスト液によりダイ中で定芯され、膜厚が
一定となる利点がある。The conventional method has a simple device configuration, and because the membrane support is free to swing when passing through the center of a fixed die, the high viscosity casting liquid maintains the center in the die, resulting in a constant film thickness. There is an advantage that
しかるに従来方法にはつぎのような実用上の欠点がある
。However, the conventional method has the following practical drawbacks.
すなわち支持体Ｏこキャスト液を連続して塗布させよう
とする場合、相互に連結した極めて長い支持体を糸で懸
垂する必要が生じ、装置は高さ方向に無制限Ｏこ長く伸
ばさなければならなく、実用上全く不可能である。In other words, in order to continuously apply the casting liquid to the supports, it becomes necessary to suspend extremely long mutually connected supports with threads, and the device must be extended for an unlimited length in the height direction. , which is completely impossible in practice.
また、従来方法のままバッチ方式で生産させる場合、１
本の支持体の製膜達成後、糸の付は替の作業、ダイの清
掃等の手作業を要し、このため１時間当り数本程度の生
産量にしかならず、極めて非能率であると同時にダイの
清掃等の不確実性および個人差のための膜性能のバラツ
キが欠点であった。In addition, when producing in batch mode using the conventional method, 1
After completing film formation of the book support, manual work such as attaching threads, changing the thread, and cleaning the die is required, which results in production of only a few books per hour, which is extremely inefficient and at the same time Disadvantages include uncertainty in die cleaning, etc., and variation in membrane performance due to individual differences.
他の方法として、支持体を垂直に固定し、ダイを上又は
下に移動してキャスト液を塗布する方法もあるが、塗布
、曝気ゲル化の一連工程を定速度で行うことは不可能で
あり、実用的でない。Another method is to fix the support vertically and move the die up or down to apply the casting solution, but it is impossible to perform the series of coating and aeration gelling steps at a constant rate. Yes, it is not practical.
この発明は上記欠点の除去を目的とするもので、膜支持
体を長手方向に連続して膜支持体案内部に供給し、該案
内部を出た膜支持体をキャスティングタイ（こ通すこと
により、キャスト液を膜支持体に塗布し、さらに曝気空
間を通過させた後氷水槽中に浸漬させる際、膜支持体を
後続の膜支持体より高い速度で搬送することにより該後
続の膜支持体から次々と引き離し、一定時間氷水槽中で
保持した後次段の熱処理部Ｏこ供給することを特徴とす
るものである。The purpose of this invention is to eliminate the above-mentioned drawbacks, and the membrane support is continuously fed in the longitudinal direction to a membrane support guide section, and the membrane support exiting the guide section is passed through a casting tie. , by conveying the membrane support at a higher speed than the subsequent membrane supports when the casting solution is applied to the membrane supports, passed through an aeration space, and then immersed in an ice water bath. The method is characterized in that the samples are separated one after another, kept in an ice water bath for a certain period of time, and then supplied to the next heat treatment section.
次にこの発明の一実施例を第２図乃至第４図にもとづき
説明すれば、６は支持体保持枠、７は支持体取出部、８
は支持体案内管、９は膜支持体１駆動部、１０はダイ、
１１はキャスト液連続供給装置、１２は膜支持体分離部
、１３は膜支持体保持部、１４は氷水槽、１５はコンベ
ア、１６は熱処理槽である。Next, an embodiment of the present invention will be described based on FIGS. 2 to 4. Reference numeral 6 indicates a support holding frame, 7 indicates a support removal portion, and 8
9 is a support guide tube, 9 is a membrane support 1 drive unit, 10 is a die,
11 is a continuous casting liquid supply device, 12 is a membrane support separating section, 13 is a membrane support holding section, 14 is an ice water bath, 15 is a conveyor, and 16 is a heat treatment tank.
膜支持体相互の接続の一例を第４図に示す。An example of interconnection of membrane supports is shown in FIG.
１７は凸コネクタ、１８は凹コネクタであり、材質は合
成樹脂がよく膜支持体外径と同一の径である。17 is a convex connector, and 18 is a concave connector, which are preferably made of synthetic resin and have the same diameter as the outer diameter of the membrane support.
これらの構成を以下詳細に説明する。膜支持体保持枠６
は膜支持体のカートリッジであり、上下２枚の円板の周
辺溝１９に膜支持体１が数１０本垂直に取付けられ、回
転する膜支持体取出機構７から伸びたアーム２０の先端
のホルダーによって１本づつ膜支持体が取出され、支持
体案内管８に挿入される。These configurations will be explained in detail below. Membrane support holding frame 6
is a membrane support cartridge, in which several tens of membrane supports 1 are vertically attached to peripheral grooves 19 of two upper and lower disks, and a holder is attached to the tip of an arm 20 extending from a rotating membrane support extraction mechanism 7. The membrane supports are taken out one by one and inserted into the support guide tube 8.
膜支持体はあらかじめ上端に凹コネクタ、下端に凸コネ
クタが取付けられている。The membrane support has a concave connector attached to its upper end and a convex connector attached to its lower end.
したがって案内管内では降下する支持体の上部に別の支
持体を突きさすように連絡し、さらに突きさした膜支持
体が降下し、その支持体の上端が案内管の中にまで達し
た時、さらに別の膜支持体を突きさすよう支持体取出部
の取出速度を調節する。Therefore, in the guide tube, another support is inserted into the upper part of the descending support, and when the membrane support that has been pushed further descends and the upper end of the support reaches the inside of the guide tube, The removal speed of the support removal unit is adjusted so that another membrane support is pierced.
本実施例の膜支持体駆動部９は電動機、減速機ローラに
よって構成されているが、ローラに替えてホルダー形式
とすることも可能である。Although the membrane support drive unit 9 of this embodiment is composed of an electric motor and a reduction gear roller, it is also possible to use a holder type instead of the roller.
降下速度は減速機により調節される。The speed of descent is regulated by a speed reducer.
膜支持体は支持体案内管８を通ってキャスティングダイ
に通される。The membrane support is passed through the support guide tube 8 into the casting die.
キャスト液供給装置１１は窒素ガスボンベ、調圧弁、キ
ャスト液タンクより構成され、窒素ガスの圧力によって
タンク内のキャスト液をダイに供給するようになってい
る。The casting liquid supply device 11 is composed of a nitrogen gas cylinder, a pressure regulating valve, and a casting liquid tank, and is configured to supply the casting liquid in the tank to the die by the pressure of the nitrogen gas.
実施例によれば窒素ガス圧力は１〜ｉ、 ５ ｆ（ｙ
／ｃｒｆｌＧで充分である。According to the example, the nitrogen gas pressure is 1 to i, 5 f(y
/crflG is sufficient.
この場合、ガスはキャスト液の酸化防止のため窒素ガス
のような不活性ガスが好ましい。In this case, the gas is preferably an inert gas such as nitrogen gas to prevent oxidation of the casting liquid.
膜支持体はダイの中でキャスト液が塗布され、ダイを通
過後空気中を通過して曝気される。The membrane support is coated with a casting liquid in a die, and after passing through the die, it is passed through air and aerated.
ついで氷水中に入るまでの曝気時間は製膜上重要な条件
である。The aeration time before entering the ice water is an important condition for film formation.
したがってダイ下端と氷水槽の水面の距離はキャスト液
の原料、組成によって異なるが、最適値に調節可能にし
ておく必要がある。Therefore, although the distance between the lower end of the die and the water surface of the ice bath varies depending on the raw material and composition of the casting liquid, it is necessary to be able to adjust it to an optimal value.
酢酸セルロース系のキャスト液では実施例では１００關
が最適であり、気温、その他の雰囲気によって、変化す
ることは勿論である。For cellulose acetate-based casting liquid, 100 degrees is optimal in the examples, but it goes without saying that it changes depending on the temperature and other atmosphere.
膜支持体分離部１２は氷水槽１４に入った膜支持体を第
３図で説明した凸コネクタ１７と凹コネクタ１８との間
で分離するもので、ホルダー２５が下端の凸コネクタの
降下速度と等速に移動しながらコネクタをキャッチし、
ホルダー２６が上端の凹コネクターをキャッチする。The membrane support separating unit 12 separates the membrane support placed in the ice water bath 14 between the convex connector 17 and the concave connector 18 explained in FIG. Catch the connector while moving at a constant speed,
A holder 26 catches the recessed connector at the upper end.
と同時にホルダー２６はホルダー２５より早い速度で降
下する。At the same time, holder 26 descends at a faster speed than holder 25.
この操作によって凸コネクタ１７と凹コネクタ１８は分
離する。By this operation, the convex connector 17 and the concave connector 18 are separated.
分離後ホルダー２５は凸コネクターをはづす。After separation, the holder 25 attaches the convex connector.
つぎにホルダー２７が凸コネクタをキャッチすることに
よって、膜の上部および下部がホルダー２６およびホル
ダー２７につかまれている状態になる。Next, the holder 27 catches the convex connector, so that the upper and lower parts of the membrane are held by the holders 26 and 27.
両端をつかまれた膜は膜保持部１３によって位置を変換
し、水平に移動され、コンベアにのせられる。The membrane held at both ends is changed in position by the membrane holder 13, moved horizontally, and placed on a conveyor.
すなわち、ダイ１０までは膜支持体１は連続して降下し
膜が形成された後、膜支持体１は１本づつに分離されて
水平に移動し順次コンベア１５にのせられることになる
。That is, the membrane support 1 is continuously lowered to the die 10, and after a membrane is formed, the membrane support 1 is separated one by one, moved horizontally, and sequentially placed on the conveyor 15.
氷水槽１４中で膜は１時間コンベア１５上で移動しつつ
滞留したのち熱処理水槽１６内のコンベア２８に移動さ
れる。The membrane remains in the ice water bath 14 while moving on the conveyor 15 for one hour, and then is transferred to the conveyor 28 in the heat treatment water bath 16.
一定時間熱処理された膜支持体１は両端の凸および凹コ
ネクタを取りはずしたのち製品とされる。The membrane support 1 that has been heat-treated for a certain period of time is made into a product after removing the convex and concave connectors at both ends.
この発明は以上のような構成であって、管状支持体を膜
支持体案内部８を介して垂直降下させ、ダイ１０に導入
し、一定厚さにキャスト液を塗布し、曝気させたのち、
氷水槽１４中にてゲル化させる際、膜支持体を後続の膜
支持体より高い速度で搬送することにより後続の膜支持
体から次々と引き離し、一定時間氷水槽中で保持した後
次段の熱処理部に供給している。The present invention has the above-mentioned structure, and the tubular support is vertically lowered through the membrane support guide section 8, introduced into the die 10, coated with a casting liquid to a constant thickness, and aerated.
When gelling is carried out in the ice water bath 14, the membrane supports are separated from the subsequent membrane supports one after another by being conveyed at a higher speed than the subsequent membrane supports, and after being kept in the ice water bath for a certain period of time, the next step Supplied to the heat treatment section.
本発明はこのように横取したためダイ１０への膜支持体
１の導入が完全に連続化し、ダイ１０中のキャスト液が
空気に触れることなく、またキャスト液はダイ１０の中
で滞留することがないため常に新しいキャスト液が塗布
されることＯこなる。In the present invention, since the membrane support 1 is intercepted in this way, the introduction of the membrane support 1 into the die 10 is completely continuous, the casting liquid in the die 10 does not come into contact with air, and the casting liquid remains in the die 10. Since there is no liquid, new casting liquid is always applied.
特に酢酸セルロース系のキャスト液はアセトン溶媒を使
用しており、常温でもその蒸発速度は犬であるため滞留
によるアセトン蒸発はキャスト液の組成変化を生じ膜性
能を低下させ、性能のバラツキを生じるものであるが、
この点本発明ではその不安はない。In particular, cellulose acetate-based casting liquid uses acetone solvent, and its evaporation rate is slow even at room temperature, so acetone evaporation due to stagnation causes a change in the composition of the casting liquid, reducing film performance and causing performance variations. In Although,
In this respect, there is no such concern in the present invention.
また、自動化により品質が一定となり、品質管理が容易
となるばかりでなく、検査工程の省略にもなり、その効
果は犬である。Furthermore, automation not only makes quality constant and quality control easier, but also eliminates the inspection process, which has a tremendous effect.
第１図は従来の製膜装置を示す概略図、第２図は本発明
の製膜装置を示す概略図、第３図は第２図の氷水槽の側
断面および熱処理槽を示す概略図、第４図は凸コネクタ
と凹コネクタとの嵌合状態を示す断面図である。
１・・・・・・膜支持体、６・・・・・・支持体保持枠
、７・・・・・・支持体取出部、９・・・・・・ロール
、駆動部、１０・・・・・・キャスティングダイ、１１
・・・・・・キャスト液連続供給装置、１２・・・・・
・膜支持体分離部、１３・・・・・・膜支持体保持部、
１４・・・・・・氷水槽、１６・・・・・・熱処理槽。FIG. 1 is a schematic diagram showing a conventional film forming apparatus, FIG. 2 is a schematic diagram showing a film forming apparatus of the present invention, and FIG. 3 is a schematic diagram showing a side cross section of the ice bath and a heat treatment tank in FIG. 2. FIG. 4 is a sectional view showing the fitted state of the convex connector and the concave connector. DESCRIPTION OF SYMBOLS 1...Membrane support, 6...Support holding frame, 7...Support removal part, 9...Roll, drive unit, 10... ...casting die, 11
...Cast liquid continuous supply device, 12...
- Membrane support separation section, 13... Membrane support holding section,
14...Ice water tank, 16...Heat treatment tank.
Claims (1)
向に連続して支持体案内部に供給し、該案内部で、凹凸
コネクタにより前後の膜支持体を接続し、該案内部を出
た膜支持体をキャスティングダイに通すことにより、キ
ャスト液を膜支持体に塗布し、ざらに曝気空間を通過さ
せた後氷水槽中に浸漬させる際、膜支持体を後続の膜支
持体より高い速度で搬送することにより該後続の膜支持
体から次々と引き離し、一定時間氷水槽中で保持した後
次段の熱処理部に供給することを特徴とする外圧式管状
膜の連続製造方法。1. A membrane support with concave-convex connectors attached to the upper and lower ends is continuously supplied in the longitudinal direction to a support guide section, and in the guide section, the front and rear membrane supports are connected by the concave-convex connectors, and the membrane supports are removed from the guide section. By passing the membrane support through a casting die, the casting liquid is applied to the membrane support and passed through a rough aeration space before being immersed in an ice water bath, at a higher rate than subsequent membrane supports. 1. A method for continuously producing an external pressure type tubular membrane, characterized in that the membrane is separated one after another from the subsequent membrane support by transporting the membrane, held in an ice water bath for a certain period of time, and then supplied to the next heat treatment section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57120659A JPS5841884B2 (en) | 1982-07-13 | 1982-07-13 | Continuous production method of external pressure type tubular membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57120659A JPS5841884B2 (en) | 1982-07-13 | 1982-07-13 | Continuous production method of external pressure type tubular membrane |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53047857A Division JPS5823124B2 (en) | 1978-04-24 | 1978-04-24 | Continuous production method and device for external pressure tubular membrane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5824306A JPS5824306A (en) | 1983-02-14 |
| JPS5841884B2 true JPS5841884B2 (en) | 1983-09-16 |
Family
ID=14791709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57120659A Expired JPS5841884B2 (en) | 1982-07-13 | 1982-07-13 | Continuous production method of external pressure type tubular membrane |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5841884B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0540066Y2 (en) * | 1987-12-28 | 1993-10-12 | ||
| JP4260409B2 (en) | 2002-03-06 | 2009-04-30 | Ｎｓｋワーナー株式会社 | Method and apparatus for adhering friction material to core plate for lock-up clutch |
| JP2010089146A (en) * | 2008-10-10 | 2010-04-22 | Kawajiri Kogyo Kk | Hot plate and press machine |
-
1982
- 1982-07-13 JP JP57120659A patent/JPS5841884B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5824306A (en) | 1983-02-14 |
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