JPH04358528A - Rotary filter apparatus - Google Patents
Rotary filter apparatusInfo
- Publication number
- JPH04358528A JPH04358528A JP13476291A JP13476291A JPH04358528A JP H04358528 A JPH04358528 A JP H04358528A JP 13476291 A JP13476291 A JP 13476291A JP 13476291 A JP13476291 A JP 13476291A JP H04358528 A JPH04358528 A JP H04358528A
- Authority
- JP
- Japan
- Prior art keywords
- filtration
- rotary
- support
- liquid
- filtration 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
Links
- 238000001914 filtration Methods 0.000 claims abstract description 121
- 239000012528 membrane Substances 0.000 claims abstract description 88
- 239000011148 porous material Substances 0.000 claims abstract description 48
- 239000007788 liquid Substances 0.000 claims abstract description 30
- 239000000706 filtrate Substances 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 11
- 239000011521 glass Substances 0.000 claims description 7
- 150000002736 metal compounds Chemical class 0.000 claims description 6
- 229910017053 inorganic salt Inorganic materials 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 6
- 230000007774 longterm Effects 0.000 abstract description 4
- 230000009969 flowable effect Effects 0.000 abstract 2
- 239000012530 fluid Substances 0.000 abstract 2
- 239000000243 solution Substances 0.000 description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 150000002902 organometallic compounds Chemical class 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000003980 solgel method Methods 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 230000001580 bacterial effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000011368 organic material Substances 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 150000004703 alkoxides Chemical class 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- JHLCADGWXYCDQA-UHFFFAOYSA-N calcium;ethanolate Chemical compound [Ca+2].CC[O-].CC[O-] JHLCADGWXYCDQA-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- XPGAWFIWCWKDDL-UHFFFAOYSA-N propan-1-olate;zirconium(4+) Chemical compound [Zr+4].CCC[O-].CCC[O-].CCC[O-].CCC[O-] XPGAWFIWCWKDDL-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- QDRKDTQENPPHOJ-UHFFFAOYSA-N sodium ethoxide Chemical compound [Na+].CC[O-] QDRKDTQENPPHOJ-UHFFFAOYSA-N 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/15—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces
- B01D33/21—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with hollow filtering discs transversely mounted on a hollow rotary shaft
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、回転濾過装置に関し、
詳細には、苛酷な耐食性、耐熱性が要求される化学工業
用プロセス及び水処理等の公害防止機器に使用される回
転濾過装置、特に濾過膜（フィルター）の目詰まりが激
しくて苛酷な程の洗浄、殺菌等を必要とする用途に適用
される回転濾過装置に関する。[Industrial Application Field] The present invention relates to a rotary filtration device.
In detail, rotary filtration equipment used in chemical industrial processes that require severe corrosion resistance and heat resistance, and pollution prevention equipment such as water treatment, especially those with severe clogging of the filtration membrane (filter). The present invention relates to a rotary filtration device used in applications requiring cleaning, sterilization, etc.
【０００２】0002
【従来の技術】この種の用途に用いられる従来の濾過装
置の濾過膜としては、有機質材からなる分離膜（有機膜
）や、細孔径：１μｍ 以上の多孔質セラミックス管の
内面のみ又は外面のみに細孔径：１μｍ 以下のセラミ
ックスをコーティングした分離膜が多く用いられている
。[Prior Art] The filtration membranes of conventional filtration devices used for this type of application include separation membranes (organic membranes) made of organic materials, or only the inner or outer surfaces of porous ceramic tubes with pore diameters of 1 μm or more. Separation membranes coated with ceramics having a pore size of 1 μm or less are often used.
【０００３】限外濾過プロセスなど膜分離技術分野にお
いては、耐熱性や耐薬品性に優れた無機膜が知られてい
る。しかし、従来の有機膜と同じように、無機膜でも膜
の目詰まりが生じる。又、無機膜は有機膜に比し、寿命
が長い利点があるものの、成形性が悪く且つ高価である
など実用面での問題点が多くて、有機膜ほどには使われ
ていない。In the field of membrane separation technology such as ultrafiltration processes, inorganic membranes with excellent heat resistance and chemical resistance are known. However, just like conventional organic membranes, inorganic membranes also experience membrane clogging. In addition, although inorganic films have the advantage of having a longer service life than organic films, they have many practical problems such as poor moldability and high cost, so they are not used as much as organic films.
【０００４】特に、菌体等を含む懸濁液を濾過する場合
、濾過の進行に伴い濾過膜の目詰まりが生じて濾過抵抗
が増大し、その結果濾過効率が低下し易い。かかる目詰
まりによる濾過抵抗の増大を出来るだけ少なくしようと
する濾過装置として、代表的なものに回転濾過装置があ
る。[0004] In particular, when a suspension containing bacterial cells or the like is filtered, as the filtration progresses, the filtration membrane becomes clogged, increasing the filtration resistance, and as a result, the filtration efficiency tends to decrease. A typical example of a filtration device that attempts to minimize the increase in filtration resistance due to such clogging is a rotary filtration device.
【０００５】従来の回転濾過装置の基本的な構造は、被
濾過液が連続的に送入される容器内に、濾過液取出し手
段と連通する中心孔を有する回転軸を設けて駆動手段に
連結し、液流通路（中空小室等）を有する濾過膜支持体
と濾過膜とからなる円盤状濾過素子を複数個、液体流通
自由な間隙を隔てて前記回転軸上に同心に嵌装すると共
に、該濾過素子の濾過膜支持体の液流通路と前記回転軸
の中心孔とを液体流通可能に連通させたものである。The basic structure of a conventional rotary filtration device is that a rotating shaft having a central hole communicating with a filtrate extraction means is provided in a container into which a filtrate is continuously fed, and is connected to a driving means. A plurality of disc-shaped filtration elements each consisting of a filtration membrane support and a filtration membrane having a liquid flow path (hollow chamber, etc.) are fitted concentrically on the rotating shaft with a gap allowing free liquid flow therebetween; The liquid flow path of the filtration membrane support of the filtration element and the center hole of the rotating shaft are communicated so that liquid can flow therethrough.
【０００６】かかる回転濾過装置としては、所謂共回り
現象（被濾過液が濾過素子と同一方向に随伴流動する現
象）による濾過膜の目詰まりの発生を防止することや、
濾過素子の軽量化等のため、主に構造面から検討改良が
加えられ、種々の改良型回転濾過装置（構造）が提案さ
れているが、未だ充分なものは開発されておらず、種々
問題点が残されており、さらなる改善が望まれている。[0006] Such a rotary filtration device can prevent the occurrence of clogging of the filtration membrane due to the so-called co-rotation phenomenon (a phenomenon in which the liquid to be filtered flows in the same direction as the filtration element);
In order to reduce the weight of the filtration element, studies and improvements have been made mainly from the structural aspect, and various improved rotary filtration devices (structures) have been proposed, but a satisfactory one has not yet been developed and there are various problems. Some points remain, and further improvements are desired.
【０００７】例えば、特開昭４７−２３９４９号公報に
は、複数個の円盤状濾過素子の間に固定濾過素子を配し
たものが記載されているが、構造が非常に複雑且つ精密
になるため、組立や分解に煩雑な手順を要し、又、濾過
膜の目詰まりを充分に抑制し得ない。特開平１−１３９
１１４号公報には、円盤状濾過素子に被濾過液を回転軸
方向に貫流させる貫通孔を複数個設けて、被濾過液の随
伴流を利用して各濾過素子間の間隙に外周方向に向かう
被濾過液の循環流を発生させ、それにより共回り現象に
よる濾過膜の目詰まりを抑制しようとするものが記載さ
れているが、濾過膜の耐熱性及び耐薬品性が充分でなく
て寿命が短く、又、濾過膜を支持し且つ多数個の貫通孔
を有する複雑な構造の円盤状支持板が必要であると共に
、該支持板と濾過膜とを固定し且つ液洩れを防止するシ
ール部を要するため、複雑な構造になって実用性に欠け
る。又、円盤状濾過素子として、連通微細孔を多数有す
るポリプロピレン粒子等の如き硬質合成樹脂の微細粒子
を焼結してなる円盤状の有機多孔質材の表面に、濾過膜
を被覆したもの（特願昭６３−１００９９８ 号）があ
るが、この有機多孔質材は耐熱性及び耐薬品性に優れな
いために濾過素子の寿命が短く、又、濾過膜の目詰まり
を充分に抑制し得ないという問題点もある。For example, Japanese Patent Application Laid-open No. 47-23949 describes a device in which a fixed filtration element is arranged between a plurality of disc-shaped filtration elements, but the structure is extremely complicated and precise. , requires complicated procedures for assembly and disassembly, and cannot sufficiently suppress clogging of the filtration membrane. Japanese Patent Publication No. 1-139
No. 114 discloses that a disc-shaped filter element is provided with a plurality of through holes through which the liquid to be filtered flows in the direction of the rotation axis, and the accompanying flow of the liquid to be filtered is used to flow toward the outer circumferential direction into the gap between each filter element. A method has been described that generates a circulating flow of the filtered liquid and thereby suppresses clogging of the filtration membrane due to the co-rotation phenomenon, but the filtration membrane does not have sufficient heat resistance and chemical resistance, resulting in a short service life. It is necessary to have a short, disk-shaped support plate with a complicated structure that supports the filtration membrane and has a large number of through holes, and a seal part that fixes the support plate and the filtration membrane and prevents liquid leakage. Therefore, the structure becomes complicated and lacks practicality. In addition, as a disc-shaped filtration element, the surface of a disc-shaped organic porous material made by sintering fine particles of hard synthetic resin such as polypropylene particles having a large number of communicating micropores is coated with a filtration membrane (specially). No. 63-100998), but this organic porous material does not have excellent heat resistance or chemical resistance, so the life of the filtration element is short, and it is said that it cannot sufficiently suppress clogging of the filtration membrane. There are also problems.
【０００８】[0008]
【発明が解決しようとする課題】前記の如く、従来の回
転濾過装置においては、改良が種々試みられているが、
いづれも濾過膜の目詰まりを充分に抑制し得ず、又、組
立や分解が大変になったり、複雑な構造になって実用性
が乏しくなったり、或いは濾過素子の寿命が優れない等
の問題点がある。[Problems to be Solved by the Invention] As mentioned above, various improvements have been attempted in the conventional rotary filtration device.
In either case, clogging of the filtration membrane cannot be sufficiently suppressed, assembly and disassembly become difficult, the structure becomes complex and practical, or the life of the filtration element is not excellent. There is a point.
【０００９】本発明はこの様な事情に着目してなされた
ものであって、その目的は、耐熱性や耐薬品性に優れて
寿命が長いという利点を有する無機多孔質材の特徴を活
かし、しかも加工面、コスト面での問題点を克服し、又
、濾過膜の目詰まりが生じ難くて効率的な濾過プロセス
の実用化をより一層推進し得る回転濾過装置を提供しよ
うとするものである。[0009] The present invention was made in view of these circumstances, and its purpose is to take advantage of the characteristics of inorganic porous materials, which have the advantages of excellent heat resistance and chemical resistance, and long lifespan. Furthermore, the present invention aims to provide a rotary filtration device that overcomes problems in terms of processing and cost, and further promotes the practical application of an efficient filtration process that is less likely to cause clogging of the filtration membrane. .
【００１０】0010
【課題を解決するための手段】上記目的を達成するため
に、本発明に係る回転濾過装置は次のような構成として
いる。即ち、請求項１記載の回転濾過装置は、被濾過液
が連続的に送入される容器内に、濾過液の取出し手段と
連通する中心孔を有する回転軸を設けて駆動手段に連結
し、孔径：１μｍ 超の連通微細孔を多数有する無機多
孔質材からなる円盤状の濾過膜支持体を液体流通自由な
間隙を隔てて前記回転軸上に同心に嵌装すると共に、該
支持体の連通微細孔と前記回転軸の中心孔とを液体流通
可能に連通させる一方、該支持体に被濾過液を回転軸方
向に貫流させる貫通孔を複数個設け、該支持体の表面に
孔径：１μｍ 以下の無機多孔質材を被覆して濾過膜を
形成してなることを特徴とする回転濾過装置である。[Means for Solving the Problems] In order to achieve the above object, a rotary filtration device according to the present invention has the following configuration. That is, in the rotary filtration device according to claim 1, a rotating shaft having a center hole communicating with a filtrate extraction means is provided in a container into which the filtrate is continuously fed, and the rotary shaft is connected to a driving means. A disk-shaped filtration membrane support made of an inorganic porous material having a large number of communicating fine pores with a pore diameter of more than 1 μm is fitted concentrically on the rotating shaft with a gap through which liquid can freely flow, and the support is in communication with each other. The micropores and the center hole of the rotating shaft are communicated so that liquid can flow therein, and the support is provided with a plurality of through holes through which the liquid to be filtered flows in the direction of the rotating shaft, and the pore diameter is 1 μm or less on the surface of the support. This is a rotary filtration device characterized by forming a filtration membrane by coating an inorganic porous material.
【００１１】請求項２記載の回転濾過装置は、前記濾過
膜が、濾過膜支持体の表面に有機金属化合物含有溶液と
無機塩とを含む混合体を塗布し焼成してなる無機多孔質
材である請求項１記載の回転濾過装置である。請求項３
記載の回転濾過装置は、前記被濾過液が送入される容器
の内面にガラスがライニングされている請求項１又は２
記載の回転濾過装置である。[0011] In the rotary filtration device according to claim 2, the filtration membrane is an inorganic porous material formed by applying a mixture containing an organic metal compound-containing solution and an inorganic salt to the surface of a filtration membrane support and baking the mixture. A rotary filtration device according to claim 1. Claim 3
The rotary filtration device according to claim 1 or 2, wherein the inner surface of the container into which the liquid to be filtered is fed is lined with glass.
This is a rotary filtration device as described.
【００１２】0012
【作用】本発明に係る回転濾過装置は、前記の如く、孔
径：１μｍ 超の連通微細孔を多数有する無機多孔質材
からなる円盤状の濾過膜支持体に被濾過液を貫流させる
貫通孔を複数個設け、該支持体の表面に孔径：１μｍ
以下の無機多孔質材を被覆して濾過膜を形成し、該支持
体の連通微細孔と回転軸の中心孔とを液体流通可能に連
通させている。従って、この濾過膜支持体と濾過膜とに
より円盤状濾過素子が構成されており、該濾過素子を回
転すると共に被濾過液を容器内に送入すると、被濾過液
は濾過膜により濾過され、その濾過液は濾過膜支持体の
連通微細孔を通って回転軸の中心孔に流れるので、連続
的濾過操業が可能である。[Operation] As described above, the rotary filtration device according to the present invention has through-holes through which the liquid to be filtered flows through the disc-shaped filtration membrane support made of an inorganic porous material having a large number of communicating fine pores with a pore diameter of more than 1 μm. A plurality of pores are provided on the surface of the support with a pore diameter of 1 μm.
A filtration membrane is formed by coating the following inorganic porous material, and the communicating fine pores of the support and the center hole of the rotating shaft are communicated so that liquid can flow therethrough. Therefore, the filtration membrane support and the filtration membrane constitute a disc-shaped filtration element, and when the filtration element is rotated and the liquid to be filtered is fed into the container, the liquid to be filtered is filtered by the filtration membrane, Since the filtrate flows through the communicating fine pores of the filtration membrane support to the central hole of the rotating shaft, continuous filtration operation is possible.
【００１３】上記の如く円盤状濾過素子は濾過膜支持体
と濾過膜とにより構成され、これらはいづれも無機多孔
質材からなるので、有機質材のものに比し、極めて耐熱
性や耐薬品性に優れて寿命が長くなり、又、濾過膜自体
も有機膜に比し苛酷な洗浄、殺菌作業に充分に耐え得る
ようになる。As mentioned above, the disc-shaped filtration element is composed of a filtration membrane support and a filtration membrane, and since these are both made of inorganic porous materials, they have extremely high heat resistance and chemical resistance compared to organic materials. The filtration membrane itself can withstand harsh cleaning and sterilization operations better than organic membranes.
【００１４】又、濾過膜の目詰まりが基本的に生じ難い
回転濾過方式を採用しており、加えて上記濾過膜は非対
称形の膜となるので、菌体等を含む懸濁液を濾過する場
合でも目詰まりが生じ難くて透過液量を多くすることが
可能である。更に、上記円盤状濾過素子は被濾過液を回
転軸方向に貫流させる貫通孔を有するので、被濾過液の
随伴流を利用して各濾過素子間の間隙に外周方向に向か
う被濾過液の循環流を発生させ、それにより濾過膜の目
詰まりをより一層低減し得る。[0014] Furthermore, a rotary filtration system is adopted in which clogging of the filtration membrane is basically less likely to occur, and in addition, since the filtration membrane is an asymmetric membrane, it is possible to filter suspensions containing bacterial bodies, etc. Even in such cases, clogging is less likely to occur and it is possible to increase the amount of permeate. Furthermore, since the disc-shaped filtration element has a through hole that allows the liquid to be filtered to flow through in the direction of the rotation axis, the liquid to be filtered can be circulated in the gap between each filter element in the outer circumferential direction using the accompanying flow of the liquid to be filtered. flow, thereby further reducing clogging of the filtration membrane.
【００１５】更に、上記円盤状濾過素子は、円盤状砥石
等の如き無機多孔質材に複数個の貫通孔を設け、その表
面に濾過膜として無機多孔質材を該原料液中へのディッ
ピング等の方法により被覆することにより簡単に形成し
得る。即ち、円盤状濾過素子の形状が複雑でないので、
濾過膜の成形性の難しさは従来の無機膜の場合ほどでは
なく、比較的容易に無機膜の形成が可能となる。Furthermore, the disc-shaped filtration element has a plurality of through holes formed in an inorganic porous material such as a disc-shaped grindstone, and the inorganic porous material is used as a filtration membrane on the surface of the inorganic porous material by dipping into the raw material liquid. It can be easily formed by coating using the method described above. That is, since the shape of the disc-shaped filter element is not complicated,
Formability of the filtration membrane is not as difficult as in the case of conventional inorganic membranes, and it becomes possible to form an inorganic membrane relatively easily.
【００１６】本発明において、濾過膜を構成する無機多
孔質材（無機多孔質膜）の孔径を１μｍ 以下としてい
るのは、１μｍ 超では微細粒子が通過して濾過分離機
能が低下するからである。濾過膜支持体を構成する無機
多孔質材を、連通微細孔を有するものにしているのは濾
過液を回転軸の中心孔へ流通させるためであり、この連
通微細孔の孔径を１μｍ 超としているのは、１μｍ
以下では濾過液が通り難くなって回転軸の中心孔への流
量が減少し、濾過分離効率が低下するからである。[0016] In the present invention, the pore diameter of the inorganic porous material (inorganic porous membrane) constituting the filtration membrane is set to 1 μm or less because if it exceeds 1 μm, fine particles will pass through and the filtration separation function will deteriorate. . The inorganic porous material constituting the filtration membrane support is made to have communicating micropores in order to allow the filtrate to flow to the center hole of the rotating shaft, and the diameter of these communicating micropores is set to exceed 1 μm. is 1μm
This is because if the filtrate becomes difficult to pass through, the flow rate to the center hole of the rotating shaft decreases, and the filtration separation efficiency decreases.
【００１７】前記無機多孔質膜は、濾過膜支持体の表面
に有機金属化合物含有溶液と無機塩とを含む混合体を塗
布し焼成してなるもの、即ちゾル・ゲル法を利用して形
成された無機多孔質膜にするのが望ましい。それは、ゾ
ル・ゲル法を利用すると、最も簡単に且つ確実に無機多
孔質膜の孔径を１μｍ 以下に調整し得ると共に、耐熱
性及び耐薬品性に優れ、且つ濾過膜支持体との密着性に
優れた無機多孔質膜が得られるからである。The inorganic porous membrane is formed by applying a mixture containing an organic metal compound-containing solution and an inorganic salt to the surface of a filtration membrane support and baking it, that is, by using a sol-gel method. It is desirable to use an inorganic porous membrane. By using the sol-gel method, the pore diameter of the inorganic porous membrane can be most easily and reliably adjusted to 1 μm or less, and it also has excellent heat resistance and chemical resistance, and has good adhesion to the filtration membrane support. This is because an excellent inorganic porous membrane can be obtained.
【００１８】即ち、ゾル・ゲル法は、有機金属化合物含
有溶液をゾルの状態を経てゲル化した後、加熱焼成して
ガラス等の無機質材を合成する方法であって、薄膜、粒
、ファイバー等の種々の形状に合成し得、又、通常のガ
ラス製造法の場合に比して組成の調整可能範囲が広いた
め、耐熱性、強度、耐食性に優れたものが得られ易いと
いう特徴を有し、又、上記有機金属化合物含有溶液に無
機塩を添加することにより、合成する無機質材の多孔質
性（孔径や孔分布等）を調整し得るという特徴を有して
おり、従って、かかる方法によれば無機多孔質膜の孔径
を調整し易く、又、耐熱性及び耐薬品性に優れた無機多
孔質膜が得られる。又、濾過膜支持体の表面に塗布する
混合体は溶液状態であるので、塗布直後に該支持体（多
孔質）の孔に含浸し、更にこの含浸深さを調整し得、従
って、焼成後得られる無機多孔質膜は密着性が極めて優
れたものになる。That is, the sol-gel method is a method for synthesizing inorganic materials such as glass by heating and baking a solution containing an organometallic compound after turning it into a sol state. It can be synthesized into various shapes, and the composition can be adjusted over a wider range than in the case of ordinary glass manufacturing methods, so it is easy to obtain products with excellent heat resistance, strength, and corrosion resistance. Furthermore, by adding an inorganic salt to the solution containing the organometallic compound, the porosity (pore diameter, pore distribution, etc.) of the inorganic material to be synthesized can be adjusted. According to this method, the pore diameter of the inorganic porous membrane can be easily adjusted, and an inorganic porous membrane having excellent heat resistance and chemical resistance can be obtained. In addition, since the mixture applied to the surface of the filtration membrane support is in a solution state, it is impregnated into the pores of the support (porous) immediately after application, and the depth of this impregnation can be further adjusted. The resulting inorganic porous membrane has extremely excellent adhesion.
【００１９】前記有機金属化合物含有溶液は、有機金属
化合物を必ず含有する溶液であり、その溶媒としてはア
ルコール及び／又は水を使用できる。有機金属化合物と
しては、金属アルコキシドが代表的であるが、特に限定
されるものではない。金属アルコキシドとしては、例え
ばナトリウムエトキシド、カルシウムエトキシド、オク
チル酸イットリウム及びシリコンエトキシド等がある。The organometallic compound-containing solution is a solution that necessarily contains an organometallic compound, and alcohol and/or water can be used as the solvent. The organometallic compound is typically a metal alkoxide, but is not particularly limited. Examples of metal alkoxides include sodium ethoxide, calcium ethoxide, yttrium octylate, and silicon ethoxide.
【００２０】前述の如く本発明に係る回転濾過装置は濾
過素子の寿命が長くなるので、それに応じて他部材の長
寿命化を図ることが望まれる。かかる点から、被濾過液
が送入される容器の長寿命化が望まれ、そのためには容
器内面にガラスをライニングして耐熱性及び耐薬品性を
向上することが有効である。As described above, in the rotary filtration device according to the present invention, the life of the filter element is extended, so it is desirable to lengthen the life of other members accordingly. From this point of view, it is desired to extend the life of the container into which the liquid to be filtered is fed, and for this purpose, it is effective to line the inner surface of the container with glass to improve heat resistance and chemical resistance.
【００２１】[0021]
（実施例１）以下、本発明の実施例１を図面に基づき説
明する。図１に示す如く、実施例１に係る回転濾過装置
は、被濾過液（原水）の送入口５と濾過されずに流動す
る循環流の取出口６とを有する容器１と、容器１を液密
に貫通して器内に挿入し、回転可能に軸支された回転軸
２と、回転軸２上に所定間隔を隔てて同心に嵌装した複
数個の円盤状濾過素子４と、回転軸２を回転駆動する駆
動装置３と、濾過素子４により濾過された濾過液を取り
出す吸引ポンプ１３と、各濾過素子４の表面を洗浄する
ための洗浄用ブラシ１４と、各ブラシ１４を回転させる
ブラシ回転装置１５とにより、構成されている。尚、上
記容器１は金属製で容器内面にガラスをライニングし、
耐薬品性等に優れた構造としている。回転軸２は濾過液
の流路となる中心孔２Ａを有する。(Example 1) Example 1 of the present invention will be described below based on the drawings. As shown in FIG. 1, the rotary filtration device according to the first embodiment includes a container 1 having an inlet 5 for a liquid to be filtered (raw water) and an outlet 6 for a circulating flow flowing without being filtered; A rotating shaft 2 which is inserted into the vessel through a close penetration and is rotatably supported; a plurality of disc-shaped filter elements 4 which are fitted concentrically on the rotating shaft 2 at predetermined intervals; 2, a suction pump 13 that takes out the filtrate filtered by the filtration element 4, a cleaning brush 14 for cleaning the surface of each filtration element 4, and a brush that rotates each brush 14. It is configured by a rotating device 15. The container 1 is made of metal, and the inner surface of the container is lined with glass.
The structure has excellent chemical resistance. The rotating shaft 2 has a center hole 2A that serves as a flow path for the filtrate.
【００２２】上記濾過素子４の構造、製作方法及び回転
軸２への嵌装について図２の拡大部分断面図により説明
する。細孔径：１μｍ 超、例えば５０μｍ の連通微
細孔を多数有する多孔質アルミナ製の円盤状の砥石板７
（直径：１０００ｍｍ、厚さ：１０ｍｍ）に、Φ６０ｍ
ｍの中心孔９、及びその周囲にΦ５０ｍｍの貫通孔１０
を８個穿設する。該砥石板７の全表面に細孔径：１μｍ
以下、例えば ０．２μｍ のアルミナ超微粒子粉末
で構成される無機多孔質膜８を被覆した。該被覆後、中
心孔９の内壁の多孔質膜８を研磨除去して多孔質アルミ
ナの地肌を露出させ、円盤状濾過素子４を得る。The structure, manufacturing method, and fitting of the filter element 4 to the rotating shaft 2 will be explained with reference to the enlarged partial sectional view of FIG. 2. A disc-shaped grindstone plate 7 made of porous alumina having a large number of communicating fine pores with a pore diameter of more than 1 μm, for example, 50 μm.
(diameter: 1000mm, thickness: 10mm), Φ60m
m center hole 9, and a Φ50 mm through hole 10 around it.
Drill 8 holes. Pore diameter: 1 μm on the entire surface of the grindstone plate 7
Thereafter, an inorganic porous membrane 8 made of ultrafine alumina particles of, for example, 0.2 μm was coated. After the coating, the porous membrane 8 on the inner wall of the center hole 9 is polished away to expose the porous alumina surface, thereby obtaining the disc-shaped filter element 4.
【００２３】Φ６０ｍｍの金属製の管にΦ５ｍｍの穴１
１を所定間隔を隔てて複数個穿設して回転軸２を製作し
、該回転軸２に前記濾過素子４を、穴１１と中心孔９と
の位置が合うように嵌装し、接着剤により固定する。尚
、回転軸２の外面にガラスをライニングすることが好ま
しい。[0023] Hole 1 of Φ5mm in a metal tube of Φ60mm
A rotating shaft 2 is manufactured by drilling a plurality of holes 1 at predetermined intervals, and fitting the filter element 4 onto the rotating shaft 2 so that the holes 11 and the center hole 9 are aligned. Fix it by. Note that it is preferable that the outer surface of the rotating shaft 2 be lined with glass.
【００２４】上記接着剤による固定は、ゾル・ゲル法を
利用して下記の如く行った。即ち、シリコンエトキシド
：２０ｇｒ， エタノール：２０ｇｒ， 水：０．１ｇ
ｒ ，リン酸：０．０３ｇｒを含有する有機金属化合物
含有溶液と、無機多孔質膜８と同様のアルミナ粉末とを
混合し、この液状又はスラリー状の混合体を接着対象部
に塗布すると共に含浸させ、風乾してゲル化し、１１０
℃で加熱乾燥した後、５００ ℃で焼成した。更に、
かかる塗布・含浸・風乾を繰り返した後、ゲルを１１０
℃で乾燥した後、５００℃で焼成し、強固な接合部１
２を形成した。[0024] Fixing with the above adhesive was carried out using the sol-gel method as follows. That is, silicon ethoxide: 20g, ethanol: 20g, water: 0.1g
An organic metal compound-containing solution containing 0.03 gr of phosphoric acid and alumina powder similar to the inorganic porous membrane 8 are mixed, and this liquid or slurry mixture is applied to the part to be bonded and impregnated. and air-dried to gel, 110
After drying by heating at 500°C, the mixture was fired at 500°C. Furthermore,
After repeating this application, impregnation, and air drying, the gel was
After drying at ℃, it is fired at 500℃ to create a strong joint 1
2 was formed.
【００２５】（実施例２）実施例１の無機多孔質膜８の
被覆後、更に該膜８に対して有機金属化合物含有溶液を
含浸させ、乾燥後５００ ℃で焼成し、形成される無機
多孔質膜８の細孔径を５０ｎｍに調整した。かかる点を
除き実施例１と同様の方法により円盤状濾過素子４を製
作し、回転軸２への嵌装及び接着剤による固定を行った
。上記有機金属化合物含有溶液には、シリコンテトラエ
トキシド：１０ｇｒ， ジルコニウムプロポキシド：２
ｇｒ，エタノール：２０ｇｒ， 水：０．１ｇｒ の混
合溶液を用いた。(Example 2) After coating the inorganic porous membrane 8 of Example 1, the membrane 8 is further impregnated with a solution containing an organic metal compound, dried and fired at 500° C. to form inorganic pores. The pore diameter of the membrane 8 was adjusted to 50 nm. A disc-shaped filtration element 4 was manufactured in the same manner as in Example 1 except for this point, and was fitted onto the rotating shaft 2 and fixed with an adhesive. The above organometallic compound-containing solution contains silicon tetraethoxide: 10 gr, zirconium propoxide: 2 gr.
A mixed solution of ethanol: 20gr, water: 0.1gr was used.
【００２６】（実施例３）実施例１のアルミナ粉末より
なる無機多孔質膜８に代えて、有機金属化合物含有溶液
と無機塩とを含む混合体を塗布し焼成してなる無機多孔
質膜を使用し、かかる点を除き実施例１と同様の方法に
より円盤状濾過素子４の製作、回転軸２への嵌装及び固
定を行い、回転濾過装置を作った。上記混合体には、シ
リコンエトキシド：２０ｇｒ， エタノール：２０ｇｒ
， 水：０．１ｇｒ ，リン酸：０．０３ｇｒを含有す
る溶液を用いた。(Example 3) In place of the inorganic porous membrane 8 made of alumina powder in Example 1, an inorganic porous membrane formed by coating and firing a mixture containing an organic metal compound-containing solution and an inorganic salt was used. A rotary filtration device was manufactured by manufacturing a disc-shaped filtration element 4, fitting it onto the rotating shaft 2, and fixing it to the rotary shaft 2 in the same manner as in Example 1 except for this point. The above mixture contains silicon ethoxide: 20g, ethanol: 20g
, water: 0.1gr, and phosphoric acid: 0.03gr.
【００２７】以上の実施例１、２及び３に係る回転濾過
装置は、いづれも無機膜（無機多孔質膜）を比較的容易
に形成し得、回転濾過装置の組立や分解も容易であった
。又、懸濁液を被濾過液として長期連続濾過運転を行っ
たところ、いづれの円盤状濾過素子もその構成部材の濾
過膜及び濾過膜支持体の耐熱性や耐薬品性が優れている
ため、寿命が長く、又、濾過膜の目詰まりが生じ難くて
効率的な濾過プロセスを遂行し得ることが確認された。[0027] In each of the rotary filtration devices according to Examples 1, 2, and 3 described above, inorganic membranes (inorganic porous membranes) could be formed relatively easily, and the rotary filtration devices were easy to assemble and disassemble. . In addition, when we performed a long-term continuous filtration operation using a suspension as the liquid to be filtered, we found that all of the disc-shaped filtration elements had excellent heat resistance and chemical resistance of their constituent members, the filtration membrane and the filtration membrane support. It has been confirmed that the filter has a long service life, is less likely to clog the filtration membrane, and can perform an efficient filtration process.
【００２８】[0028]
【発明の効果】本発明に係る回転濾過装置は前述の如き
構成を有し作用を成すものであって、円盤状濾過素子は
濾過膜支持体と濾過膜とにより構成され、これらはいづ
れも無機多孔質材からなるので、有機質材のものに比し
、極めて耐熱性や耐薬品性に優れて寿命が飛躍的に向上
すると共に、濾過膜自体も有機膜に比し苛酷な洗浄、殺
菌作業に充分に耐え得るようになり、又、菌体等を含む
懸濁液を濾過する場合でも目詰まりが生じ難くて効率的
な濾過プロセスを遂行し得、更には、円盤状濾過素子の
形状がシンプルであること等に起因して濾過膜を比較的
容易に形成し得ると共に、回転濾過装置の組立や分解も
比較的容易であって実用性に優れており、従って、装置
コスト及びランニングコストが低減されて経済性が大幅
に向上すると共に、より効率的で且つ安定した長期連続
回転濾過運転を実現し得るようになるという効果を奏す
るものである。Effects of the Invention The rotary filtration device according to the present invention has the structure and functions as described above, and the disc-shaped filtration element is composed of a filtration membrane support and a filtration membrane, both of which are inorganic. Since it is made of porous material, it has excellent heat resistance and chemical resistance compared to organic materials, dramatically increasing its lifespan, and the filtration membrane itself can withstand harsh cleaning and sterilization tasks compared to organic membranes. It has sufficient resistance, and even when filtering suspensions containing bacterial cells, clogging is less likely to occur and an efficient filtration process can be carried out.Furthermore, the shape of the disc-shaped filtration element is simple. Because of this, the filtration membrane can be formed relatively easily, and the rotary filtration device is relatively easy to assemble and disassemble, making it highly practical, and thus reducing device costs and running costs. As a result, economical efficiency is greatly improved, and a more efficient and stable long-term continuous rotary filtration operation can be realized.
【図１】本発明の実施例に係る回転濾過装置の概要を示
す構造図である。FIG. 1 is a structural diagram showing an overview of a rotary filtration device according to an embodiment of the present invention.
【図２】図１に図示する円盤状濾過素子４及び回転軸２
の拡大部分断面図である。[Fig. 2] Disc-shaped filtration element 4 and rotating shaft 2 illustrated in Fig. 1
FIG.
１−−容器、２−−回転軸、２Ａ−−回転軸２の中心孔
、３−−駆動装置、４−−円盤状濾過素子、５−−送入
口、６−−取出口、７−−円盤状砥石板（無機多孔質材
製濾過膜支持体）、８−−無機多孔質膜、９−−円盤状
砥石板７の中心孔、１０−−貫通孔、１１−−回転軸に
穿設した穴、１２−−接合部、１３−−吸引ポンプ、１
４−−洗浄用ブラシ、１５−−ブラシ回転装置、1--Container, 2-- Rotating shaft, 2A-- Center hole of rotating shaft 2, 3-- Drive device, 4-- Disc-shaped filtration element, 5-- Inlet port, 6-- Outlet port, 7-- Disc-shaped grindstone plate (filtration membrane support made of inorganic porous material), 8--Inorganic porous membrane, 9--Center hole of disc-shaped grindstone plate 7, 10--Through hole, 11--Drilled in the rotating shaft. hole, 12--junction, 13--suction pump, 1
4--Cleaning brush, 15--Brush rotating device,
Claims (3)
に、濾過液の取出し手段と連通する中心孔を有する回転
軸を設けて駆動手段に連結し、孔径：１μｍ 超の連通
微細孔を多数有する無機多孔質材からなる円盤状の濾過
膜支持体を液体流通自由な間隙を隔てて前記回転軸上に
同心に嵌装すると共に、該支持体の連通微細孔と前記回
転軸の中心孔とを液体流通可能に連通させる一方、該支
持体に被濾過液を回転軸方向に貫流させる貫通孔を複数
個設け、該支持体の表面に孔径：１μｍ 以下の無機多
孔質材を被覆して濾過膜を形成してなることを特徴とす
る回転濾過装置。Claim 1: A rotary shaft having a central hole communicating with a filtrate extraction means is provided in a container into which the filtrate is continuously fed, and connected to a driving means, and a communicating microscopic shaft having a hole diameter of more than 1 μm is provided. A disk-shaped filtration membrane support made of an inorganic porous material having a large number of holes is fitted concentrically on the rotating shaft with a gap through which liquid can freely flow, and the communicating micropores of the support and the rotating shaft are The support body is provided with a plurality of through-holes through which the liquid to be filtered flows through in the direction of the rotational axis while communicating with the center hole so that liquid can flow therethrough, and the surface of the support body is coated with an inorganic porous material having a pore diameter of 1 μm or less. A rotary filtration device characterized in that a filtration membrane is formed by
有機金属化合物含有溶液と無機塩とを含む混合体を塗布
し焼成してなる無機多孔質材である請求項１記載の回転
濾過装置。2. The rotary filtration according to claim 1, wherein the filtration membrane is an inorganic porous material formed by applying a mixture containing an organic metal compound-containing solution and an inorganic salt to the surface of a filtration membrane support and baking the mixture. Device.
にガラスがライニングされている請求項１又は２記載の
回転濾過装置。3. The rotary filtration device according to claim 1, wherein the inner surface of the container into which the liquid to be filtered is fed is lined with glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3134762A JP2567308B2 (en) | 1991-06-06 | 1991-06-06 | Rotary filtration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3134762A JP2567308B2 (en) | 1991-06-06 | 1991-06-06 | Rotary filtration device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04358528A true JPH04358528A (en) | 1992-12-11 |
| JP2567308B2 JP2567308B2 (en) | 1996-12-25 |
Family
ID=15135969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3134762A Expired - Fee Related JP2567308B2 (en) | 1991-06-06 | 1991-06-06 | Rotary filtration device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2567308B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0655268A2 (en) * | 1993-11-30 | 1995-05-31 | Joachim Dipl.-Ing. Geldmacher | Filter for continuous filtering liquids which contain solids in a closed cylindrical container |
| JP2002191945A (en) * | 2000-12-26 | 2002-07-10 | Ishikawajima Harima Heavy Ind Co Ltd | Membrane separation apparatus and method for washing it |
| WO2002007478A3 (en) * | 2000-07-13 | 2002-09-12 | Andritz Ag Maschf | Filter |
| JP2015525666A (en) * | 2012-06-29 | 2015-09-07 | ▲陽▼光▲凱▼迪新能源集▲団▼有限公司 | Highly efficient dynamic slurry separation and filtration apparatus and filtration method thereof |
-
1991
- 1991-06-06 JP JP3134762A patent/JP2567308B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0655268A2 (en) * | 1993-11-30 | 1995-05-31 | Joachim Dipl.-Ing. Geldmacher | Filter for continuous filtering liquids which contain solids in a closed cylindrical container |
| EP0655268A3 (en) * | 1993-11-30 | 1996-04-03 | Geldmacher Joachim | Filter for continuous filtering liquids which contain solids in a closed cylindrical container. |
| WO2002007478A3 (en) * | 2000-07-13 | 2002-09-12 | Andritz Ag Maschf | Filter |
| JP2002191945A (en) * | 2000-12-26 | 2002-07-10 | Ishikawajima Harima Heavy Ind Co Ltd | Membrane separation apparatus and method for washing it |
| JP2015525666A (en) * | 2012-06-29 | 2015-09-07 | ▲陽▼光▲凱▼迪新能源集▲団▼有限公司 | Highly efficient dynamic slurry separation and filtration apparatus and filtration method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2567308B2 (en) | 1996-12-25 |
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| LAPS | Cancellation because of no payment of annual fees |